How to buy a solar street lamp?

With the increasing shortage of traditional energy, the use of solar energy is more and more extensive, many people do not know solar street lamp products, resulting in the purchase of solar street lamps often have poor quality, poor brightness and short lighting time and other shortcomings. SRS solar street light suppliers will show you how to buy solar street lamps.

5 tips for buying a solar street lamp

Skill one, judge solar street lamp manufacturer is normal

Watch the video to see the size of the entity, see whether the certificate (safety production license, product quality testing certificate, public account, and product testing report) is complete, see the online word of mouth, see customer response and after-sales service policy, if there are conditions to go to the field, this is a very direct way.

 

Skill two, look at the wall thickness of the solar street lamp pole and whether it is hot-dip galvanized

Road lamp pole hot-dip galvanizing can guarantee 20 years not to rust, and the cold galvanizing process often can only maintain about 3-5 years, the choice of cold galvanizing short time can not see the problem, a long time will affect the appearance. The wall thickness of the conventional 5 meters and 6 meters solar road lamp post is 2.5, now many manufacturers choose 2.3, but do not choose a lower than 2.3 wall thickness of the road lamp post, in summer typhoon areas may occur in the light post-fracture, very affect the safety of pedestrians.

 

Skill three, look at the solar street lamp system voltage and configuration size

For solar street lamp used for conventional road lighting, try to choose 12V system voltage instead of 3.2v system voltage. Although 3.2v solar street lamps are cheap, small series are not recommended. Why is that? You can read the article “solar street lamp system voltage choice 3.2v or 12V” written by xiaobao before, which explains this problem in detail. As for the size of its configuration, if you want a good lighting effect, try not to choose a low configuration of a solar street lamp, you should let solar street lamp manufacturers calculate a reasonable configuration according to your actual needs.

 

Skill four, look at the brand of the solar lithium battery cell

Large brands of solar lithium battery cell cycle times, the natural service life will be long.

 

Skill five, look at the solar road lamp chip brand

Different brands of solar road lighting chips have different light efficiency and lumen number.

 

The higher the number of lumens, the higher the brightness, so want to better brightness to choose a big brand of solar road lamp chip, and the service life of the big brand is longer.

 

Points to note when buying a solar street lamp

 

In order to save costs, some solar street light suppliers have made great efforts in the accessories of solar street lamp. The vast majority of suppliers will purchase from some irregular manufacturers, and lack two weights on the power of the panels, resulting in the lack of panel power generation, resulting in the failure of solar street lamp to work normally; They also take the method of reducing the capacity of the battery to shoddy, reduce the cost, unjust enrichment; However, among all the accessories of solar street lamp, the cost is relatively low, but the failure rate is the highest.

There are a lot of manufacturers of solar street light sources, but the number of manufacturers with qualified products is not too many. Some solar street light suppliers often sell their products at a low price. The products may break down or even be damaged in a short time, which has caused a great negative impact on the application of solar street lights.

Most solar street light suppliers are using inferior steel, pipe diameter wall thickness, such as the lack of two jacks, the surface of the use of cold galvanized, resulting in poor wind resistance, poor surface treatment process, will cause a short time plastic layer fall off, color loss and other problems.

These low-end products are used for a period of time, is the configuration damage, can’t work properly, and the brightness continues to drop, until the dead light.

These five skills will be very helpful to the purchase of a solar street lamp. Now the market environment is chaotic and low-quality products are rampant. I believe that all purchasers who master these five skills are “semi-experts” in the solar street lamp industry.

The main components of solar street lamps

The solar street lamp is composed of the following parts: solar panel, solar controller, battery pack, light source, lamp pole and lamp housing. If the output power supply is ac 220V or 110V, the inverter shall be configured.

1. Solar panels: 

The Solar panel is the core part of solar street lamp, and also the most valuable part of solar street lamp. Its function is to convert the solar radiation capacity into electrical energy, or send it to the storage battery for storage. There are three kinds of solar cells, such as monocrystalline silicon solar cell, polycrystalline silicon solar cell and amorphous silicon solar cell. In the east and west of China, polysilicon solar cells are preferred because the production process of polysilicon solar cells is relatively simple and the price is lower than monocrystalline cells. It is better to use monocrystalline silicon solar cell in the southern region where there are more cloudy and rainy days and the sunlight is not quite enough, because the performance parameters of the monocrystalline silicon solar cell are stable. Amorphous silicon solar cells are better when there is not enough sunlight outside, because amorphous silicon solar cells require less sunlight.

2. Solar controller

Regardless of the solar street lamp size, good performance of the charging and the discharging controller is essential. In order to prolong the service life of the battery, the charging and discharging conditions must be limited to prevent the overcharging and deep charging of the battery. In the place where the temperature difference is large, the qualified controller should also have the function of temperature compensation. At the same time, the solar controller should have both the function of street light control, with the function of light control and time control, and should have the function of automatic load control at night, so as to prolong the working time of street light in cloudy and rainy days.

3. Solar street lamp battery

Due to the unstable input energy of the solar photovoltaic power generation system, it is generally necessary to configure the battery system to work. There are generally lead-acid battery, ni-cd battery, ni-h battery. The choice of battery capacity should generally follow the following principles: first, under the premise of meeting the requirements of night lighting, the energy of solar cell modules in the day should be stored as far as possible, and at the same time, the energy required to meet the requirements of continuous cloudy and rainy night lighting should be stored. Battery capacity is too small to meet the needs of night lighting, the battery is too large, on the one hand, the battery is always in a state of the deficit, affect the battery life, and cause waste. The accumulator should be matched with the solar cell and the electric load (street lamp). There is a simple way to determine the relationship between them. The solar cell power must be more than four times higher than the load power for the system to work properly. The voltage of the solar cell should exceed the working voltage of the battery by 20-30% to ensure the normal negative charge to the battery. The capacity of the battery must be 6 times higher than the daily consumption of the load.

4, the light source

solar street lamp use what kind of light source is solar road lamps and lanterns of important indexes that can be used normally, solar road lamps and lanterns commonly use low pressure, low-pressure sodium lamp, energy-saving lamps energy-saving lamps, LED light source.

(1) low-voltage energy-saving lamp: small power, high efficiency, but 2000 hours of service life, low voltage lamp tube black, generally suitable for solar lawn lights, garden lights.

(2) low-pressure sodium lamp: low-pressure sodium lamp light effect is high (up to 200Lm/w), but the inverter is needed, low-pressure sodium lamp price is expensive, the whole system is high, using less.

(3) non-polar lamp: low power, high light efficiency. The light in the 220 v (pure sine wave, frequency 50 hz) under the condition of normal mains, life can reach 50000 hours, on the solar street lamps and lanterns is greatly reduced and the service life than common energy-saving lamps (because solar street lamps and lanterns is a square wave inverter, solar power 220 v output frequency, a bit, it cannot be compared with the ordinary mains voltage).

(4) LED: LED light source, long life, up to 100,000 hours, low operating voltage, no need for an inverter, high light efficiency, 50 Lm/w domestic, 80 Lm/w imported. With the progress of technology, the performance of LED will be further improved. The author thinks that LED as the light source of solar street lamp will be a trend.

5. Lamp pole and lamp shell

The lamp pole height of the solar street lamp should be determined according to the width of the road, the distance between lamps and lanterns, and the illumination standard of the road. Lamp shell according to we collected a lot of foreign solar street lamp data, between beautiful and energy-saving, most choose energy-saving, lamp appearance requirements are not high, relatively practical on the line.

How to choose end table lamps

In the bedroom, we spend half a day to rest and recharge our energy. Therefore, the decoration of the bedroom can directly affect our rest. Lighting is a weapon for us to create a warm atmosphere. At that time, the table lamps in different spaces , You should choose different brightness. Compared with the living room that needs very bright light, the bedroom needs soft light. If the light is too strong, it may cause insomnia and nervous breakdown to the occupants. Today, brings you related content on how to choose end table lamps.

1. The size of bedroom space: The choice of table lamp needs to take into account the size of the bedroom. It is impossible to choose a table lamp that is too large for a small apartment. This will give people a feeling of oppression. The lamp in the bedroom should be selected with an appropriate light source. It should be too luxurious or gorgeous. If the area of the bedroom is relatively large, then you can choose crystal lamps or ceiling lamps, etc., which will lighten the bedroom more softly and warmly.

2. Bedroom shape: The current housing design is no better than the traditional square or rectangular bedroom. Some bedrooms may have a weird shape, so to achieve a sexy, some owners will use some techniques to increase , Reduce the indoor pattern effect, because we should also pay attention to the shape of the bedroom when choosing the lamp, and try to be consistent with the style of the bedroom.

3. Bedroom style: If the design style of the bedroom is classical, then we can choose lamps with European characteristics in the bedroom, which will make the whole bedroom look more classical. The lamps and lanterns in the simple style should also choose the corresponding design to match, so as to increase the beauty of the bedroom without giving people a sudden feeling.

The end table lamps should be single rather than double

In some families, there is no bedside lamp in the bedroom, so they choose to place a end table lamp for lighting. But whether it is a bedside lamp or a table lamp, they are all very feng shui, and you can’t choose randomly, let alone place them randomly.

The number of end table lamps in the bedroom should be single rather than double, because it is said in the Book of Changes that single is yang and double is yin. The bedroom is the place where the family lives in yang. Of course, the number of table lamps is better. In addition, the number of table lamps should not be too many, let alone lined up, which is extremely detrimental to the health and rest of the family.

If the number of bedroom lights exceeds three, you must pay attention to avoid the situation where three lights are lined up together, which is easy to form the “three sticks of feng shui”, which is a very unlucky layout and must be avoided.

Under normal circumstances, it is recommended that the bedroom lighting should be yellow. Because the yellow five elements belong to the soil, the soil can produce gold, and the yellow light is very conducive to the family’s wealth. It should be noted that red and pink lights should not be used in the bedroom. The lights of these colors are easy to attract bad peach blossoms for the owner, leading to the appearance of a third party in the couple.

In addition, the light in the bedroom should not be too bright or flickering. The light in the bedroom must be evenly illuminated and the light source is stable. On the one hand, the bedroom is a place for recuperation and rest. Darker ones are more suitable for rest. On the other hand, the bright and dark rooms are easier to form a primary and secondary distinction with the living room, which is conducive to nourishing good home Fengshui.

The best way to solve LED light bulb heating

What should I do if LED light bulbs generate heat? LEDs generate heat, and many people think that LEDs are cold light sources. This just refers to the light-emitting principle of LEDs.

Causes of LED light bulb heating:

The reason why the LED light bulb heats up is because the added electric energy is not all converted into light energy, but part of it is converted into heat energy, and the conversion efficiency of electricity to light is about 20-30%. In other words, about 70% of the electrical energy is turned into heat.

Specifically, the LED junction temperature is caused by two factors:

The internal quantum efficiency is not high, that is, when electrons and holes are recombined, 100% of photons cannot be generated. It is usually called “current leakage” that reduces the recombination rate of carriers in the PN region. The leakage current multiplied by the voltage is the power of this part, which is converted into heat energy, but this part does not account for the main component, because the internal photon efficiency is now close to 90%.

The photons generated internally cannot all be emitted to the outside of the chip and finally converted into heat. This part is the main one, because at present, the so-called external quantum efficiency is only about 30%, and most of them are converted into heat.

As mentioned earlier, although the luminous efficiency of incandescent lamps is very low, only about 151m/W, it converts almost all electric energy into light energy and radiates it out. Because most of the radiant energy is infrared, the light efficiency is very low. , But it avoids the problem of heat dissipation.

Solutions for heat dissipation of LED light bulbs:

To solve the heat dissipation of LED light bulbs, we mainly start with two aspects. Before and after packaging, it can be understood as LED chip heat dissipation and LED light bulb heat dissipation. The heat dissipation of LED chips is mainly related to the choice and process of substrate and circuit, so this article will not elaborate. This article mainly introduces the heat dissipation of LED light bulbs, because any LED will be made into a lamp, so the heat generated by the LED chip is always dissipated into the air through the shell of the lamp.

If the heat dissipation is not good, because the heat capacity of the LED chip is very small, the accumulation of a little heat will make the junction temperature of the chip increase rapidly, and if it works at a high temperature for a long time, its life will be shortened quickly. However, there are many ways for this heat to actually guide the chip to the outside air.

However, the heat dissipation of the LED lamp housing will have different options depending on the power size and the place of use. There are mainly the following heat dissipation methods:

Aluminum fins: This is the most common way to dissipate heat. Use aluminum fins as part of the housing to increase the heat dissipation area.

Thermally conductive plastic shell: Fill the plastic shell with thermally conductive material during injection molding to increase the thermal conductivity and heat dissipation capacity of the plastic shell.

Aerodynamics uses the shape of the lamp housing to create convective air, which is the lowest cost way to enhance heat dissipation.

The inside of the fan lamp housing uses a long-life and high-efficiency fan to enhance heat dissipation, which is low in cost and good in effect. However, it is more troublesome to change the fan, and it is not suitable for outdoor use. This design is relatively rare.

The heat pipe uses heat pipe technology to conduct heat from the LED chip to the heat dissipation fins of the housing. This is a common design in large lamps, such as street lamps.

Surface radiation heat treatment The surface of the lamp housing is treated with radiation heat. The simple method is to apply radiation heat dissipation paint to take the heat away from the surface of the lamp housing by radiation.

How to choose LED light bulb

This article mainly focuses on the selection of LED light bulb. You can also use analogy when purchasing other LED lamps. I hope that consumers will be inspired to buy real products that can illuminate their homes and create a healthy, environmentally friendly and energy-saving life. .

Before buying a light bulb, understand whether it is used indoors or outdoors. How much brightness is needed, how many watts of energy-saving lamps need to be replaced, or how many watts of ordinary incandescent lamps. Different places have different choices, so that the light source and unnecessary costs of buying lamps will not be wasted. For example, in corridors or staircases, toilets with lights are generally OK at 3W. However, it also depends on the area of ​​the area. For wider areas, choose a larger wattage, or the effect of installing multiple bulbs is better. For general indoor lighting, 5w-7W or more LED light bulb or multiple installations are required.

When choosing an LED bulb, you should choose a finished product made of high-power 1W or medium-power 0.5W SMD SMD LED lamp beads. The light decay of SMD patch should be small, and the cost of high-power lamp beads should be slightly higher, mainly for lamps with relatively large wattage. The cost of medium power is slightly lower, but it is relatively affordable, and it is used to make bulb lights.

When choosing LED light bulb, you must choose a shell with aluminum heat sink, not a plastic shell. LED lamp beads are most afraid of temperature. Without good heat dissipation conditions, it is difficult to guarantee the life and light decay of LED lamps.

Please pay attention to the original lamp holder connector model when replacing the LED lamp with household lamps. There are many lamp holder models in the world. Common ones in China are E27.B22.E14.GU10.MR16 and so on.

Types of Wall Mount Racks For Your Computer Room

When you don’t need a full server rack for your computer server or computer equipment then you might consider a wall mount rack. They are a really great alternative when space is of a minimum.No matter whether they are enclosed or open, you will find that they are an extremely versatile choice that largely manages to conserve both space and money. You will find that there are many manufacturers of these systems that come in dozens of sizes, heights, depths and models. Finding just the right one for you can be a very exhausting process but once you find the right model and size you will enjoy the convenience and how nicely it holds your components.Every computer room or server room or electrical closet should have at least one of these very handy wall mount racks they can help you organize and keep your electrical very neat and orderly. You will find that anywhere you decide to place it will be very convenient for you and anyone else who works with the systems.Types of Wall Mount Rackso 4 Post Open Server Rack This is an open, adjustable type of rack which is ideal for rack type of servers, KVM switches, and network equipment. Plus it is also suitable for rack type of equipment where security at the server level is not required. This would work best with monitors especially if you put them on These are some wall mounts aside from flatscreen wall mounts.o Double Server Rack This is a 4 post server rack which also offers the familiar equipment mounting features of the regular 2 post aluminum racks, but also has the added feature of a stronger, more durable, and easier to assemble 4-post rack. You will find this is ideal for those extra deep or heavier types of servers, hubs, routers, or power supplies.o 6 Rail Server Rack Frame This is a 4 post rack frame that features 3 sets (6 rails) of universal vertical rack rails, that are infinitely adjustable, and independent of the frame. You will find that this server rack frame is made heavy duty, plus is standard with casters and leveling feet. The Doors, side panels, or fan tops can be added after the purchase if you choose to enclose the open rack for security or any other purpose.

How should fog lights be used correctly?

In foggy days, the correct use of fog lights can effectively prevent traffic accidents. When a vehicle is driving on an expressway and encounters weather conditions such as fog, rain, snow, sand, and hail, and the visibility is less than 200 meters, the fog lamp for car should be turned on.

Remember:

Fog lamp for car cannot be used in non-fog weather

Because the fog lamp for car has large illuminance and strong penetrability, if used in normal weather, it will make the oncoming vehicle

Drivers, cyclists, and pedestrians are blinded instantly, and when following the car at close range, the driver

Dazzling, it is difficult to observe the surrounding traffic environment.

The main feature of fog lamp for car is strong penetration. Under low visibility conditions, vehicles and pedestrians can be noticed in time to effectively prevent accidents. In the autumn and winter seasons, there are more and more foggy weather. When driving in a foggy day, whether the fog lights are used correctly is related to the lives of drivers and passengers.

But it should be noted that, because the fog lamp is very penetrating, it cannot be used as a daily lighting lamp. Using fog lights at night with good visibility will cause visual disturbance to other drivers, and its impact is no less than the abuse of high beam lights. For the safety of you and others, please use fog lights correctly!

How should fog lights be used correctly?

In foggy days, the correct use of fog lights can effectively prevent traffic accidents. When a vehicle is driving on an expressway and encounters weather conditions such as fog, rain, snow, sand, and hail, and the visibility is less than 200 meters, the fog lamp for car should be turned on.

Remember:

Fog lamp for car cannot be used in non-fog weather

Because the fog lamp for car has large illuminance and strong penetrability, if used in normal weather, it will make the oncoming vehicle

Drivers, cyclists, and pedestrians are blinded instantly, and when following the car at close range, the driver

Dazzling, it is difficult to observe the surrounding traffic environment.

The main feature of fog lamp for car is strong penetration. Under low visibility conditions, vehicles and pedestrians can be noticed in time to effectively prevent accidents. In the autumn and winter seasons, there are more and more foggy weather. When driving in a foggy day, whether the fog lights are used correctly is related to the lives of drivers and passengers.

But it should be noted that, because the fog lamp is very penetrating, it cannot be used as a daily lighting lamp. Using fog lights at night with good visibility will cause visual disturbance to other drivers, and its impact is no less than the abuse of high beam lights. For the safety of you and others, please use fog lights correctly!

The necessity of floor standing lamps in home life

Lamps are necessary in home life, but many people think that floor standing lamps are not suitable for living in homes. The following Timing Cherish will take you to learn more about the necessity of falling lamps in the home environment!

Generally speaking, floor standing lamps are arranged in the living room and rest area, and are also used in conjunction with the sofa and coffee table in our home. The floor lamp is used to satisfy the local lighting of the room and embellish the home environment. But there is one important point, don’t put it next to tall furniture or obstruct our public activity area.

The types of floor standing lamps are also different. There is a corner lamp which is also a kind of floor lamp. The corner lamp is like an enlarged table lamp, except that it adds a high and low seat. But in terms of function, it is the same as the floor lamp, and the shape is more stable and elegant. It is very beautiful when placed at the corner of sofa furniture.

Friends who like to watch TV must put a floor lamp on the sofa or bedside. This is a necessary existence. When watching TV, especially at night, a mild light source is needed to reduce the light on the TV screen. stimulate.

The height of the floor lamp is generally between 120CM and 130CM. You can also choose the best one that can adjust the height or the angle of the lampshade. In addition, the shape and color of the lamp should be coordinated with the living room furnishings.

Reading and writing at night is the habit of many people. The bedroom is private. Therefore, it is convenient to squeeze a small study in the bedroom without disturbing the family. You can design a small desk next to the bed, you can also design a double-layer bookshelf to hang in the air, and add a floor lamp, a warm and simple small study room is located in the bedroom.

Tips for using fog lamps you must master

Fog lights are located at the front and rear of the car. In low-visibility weather such as foggy days, fog lamp for car can improve the visibility of the driver himself and the surrounding traffic participants, and serve as a reminder to surrounding drivers and auxiliary lighting. All cars are equipped with fog lamp for car, but there are still drivers who don’t know under what circumstances the fog lights are turned on, and under which conditions they should never be used.

Are you still using these lights when driving in fog?

Misunderstanding 1: It is easier to get a good line of sight when the high beam is on in a foggy day

When driving in a foggy day, you should turn on the fog lights, low beam lights, position lights, and front and rear position lights, but never turn on the high beam lights! Because the light emitted by the high beam lights will be diffusely reflected by the fog, forming a white area in front of the car. Will affect the driver’s sight.

Misunderstanding 2: When driving in fog, hazard warning flashes are more “conspicuous” than rear fog lights

Some drivers think that the hazard warning flasher is very “conspicuous”, so the hazard warning flasher can be turned on instead of the fog lamp in foggy weather. But in fact, the penetrating power of hazard warning flashes in foggy days is far less than that of fog lamps, and the light emitted is irregularly scattered like a tail lamp, rather than a regular radial shape.

Why should fog lights be turned on in foggy days?

Fog lights have auxiliary lighting and reminder functions

The fog lamp has high brightness and strong penetrability, and will not cause diffuse reflection due to fog. Therefore, in low-visibility weather such as foggy day, the fog lamp can improve the visibility of the driver himself and the surrounding traffic participants, and play an auxiliary lighting and Remind surrounding drivers of the role.

Led fog lights are divided into front and rear, generally turned on at the same time

Fog lights are divided into front fog lights and rear fog lights. The front fog lights are generally bright yellow, which can provide high-brightness and diffuse light sources, have strong penetrating power, can penetrate dense fog, and can both illuminate and remind oncoming vehicles and pedestrians. . The rear fog light is a red signal light with a greater luminous intensity than the tail light, in order to make it easy to spot vehicles and other traffic participants behind.