First, heat dissipation, in fact, there are many people who do not understand heat dissipation in lamps and lanterns. Many people touch the shell. Then whether the shell is hot or not, of course, neither of them is a reasonable answer. The final answer to whether it is hot or not is to see The thermal path from the heat sink to the shell. If any level on this path is separated by air, even if the power of the lamp is only 18W, it is completely possible that the temperature difference between the heat sink and the shell is more than 30 degrees after thermal equilibrium. In this way, the door is filled with high thermal conductivity materials, and the temperature difference is completely possible to control within 10~15 degrees. In this case, it is reasonable not to be hot. Therefore, the aluminum substrate must be completely close to the lamp shell when designing , If you think that filling the thermal conductive material between the aluminum substrate and the lamp body will bring cost and operational troubles, then you can make the two close as much as possible, and then fill a layer of thermal conductive silica gel on the aluminum substrate, which can remove the heat. Directly lead to the lamp housing, can fix the secondary lens, and prevent the direct corrosion of the moisture in the cavity. It is recommended that the thickness of the potting exceeds 2mm of the aluminum substrate.
2. Adhesive is not recommended for the sealing between the glass and the lamp housing. In addition to the super slow production efficiency, the adhesive will also bring about waterproof, unsafe and unmaintainable problems. Once there is a small part of it, it is not good to stick, in fact, the whole strip is not good. In a scrapped state, if the appearance is handled well enough, screwing directly from the above is a good method from all aspects. Of course, the currently popular compact structure is also relatively reasonable, except for the relatively slow production efficiency. Also need to pay attention to controlling the size and hardness of the apron. Too thick and too hard will cause assembly difficulty, and too thin will cause the glass to not be pressed tightly. The hardness of the apron is around 35.
Third, the end cover is sealed. In fact, many people have done 90% of the correct work right now, but they will carry somersaults here. They are doing well in all aspects. The lamp is filled with water. The problem lies here, so here is the following Suggestions: 1. The three glass, layering and lamp body must be flush. In the case of unavoidable circumstances, it is not recommended that the flushness of the three be more than 0.5mm. 2 The screw holes of the end cover must be tapped. Self-tapping screws cannot be used. Self-tapping screws will cause the end cover to be uneven during the pressing process. The screws are M4 inner six-point screws, and the material is stainless steel. By the way, remember With the spring washer, the reasons will not be explained one by one. 3 The apron should be able to be fixed in the end cap, and it is not recommended to use a flat end cap; the apron should be wide enough, and the apron should be at least 2mm on each side of the pressed surface The width of the rubber ring can prevent the rubber ring from “running” and cause water in the process of being compressed. Of course, the rubber ring should not be too hard. The rubber ring should be fixed after a round of silicone. This seems cumbersome but very effective. To make up for the water ingress caused by uneven end faces caused by various reasons, of course, the premise is that the glue you use cannot react with the rubber ring and cause the glue to not dry.
The new led linear lamp and guardrail tube have many similarities, let’s explain their similarities and differences:
1) Voltage: The voltage of the led linear lamp is 220V, 110V, 36V, 24V, 12V, several kinds, so we pay attention to the corresponding voltage when choosing the power supply. Currently, 220V linear lights are the mainstay on the market, but more and more manufacturers are promoting low-voltage linear lights. Although the cost is higher, they are more stable and safer than engineering. Although the guardrail tube can also be made into 220V voltage, the common practice is still 24V. This is because the guardrail tube shell is more fragile than the linear lamp, and leakage is likely to occur once the shell is aging.
2) Operating temperature: Because LED linear lights are usually used outdoors more, this parameter is more important, and the temperature requirements are relatively high. Generally, the outdoor temperature we require can work at -40℃+60℃. However, the linear lamp is made of an aluminum shell with better heat dissipation, so the general linear lamp can meet the requirements.
Post time: May-07-2021