Temperature resistance of optical lenses. The choice of optical lens material should be determined by measuring its temperature value according to the location. If the temperature is too high and exceeds the temperature limit of the lens material, it will burst, fade and defilm. Ordinary glass color sheet can only withstand about 200, high temperature resistant glass color sheet can only withstand about 350; The normal optical lens can withstand 250, and the high temperature resistant optical lens can only withstand about 550. Therefore, the design of heat insulation sheet and cooling ventilation system structure should be considered to eliminate the optical lens burst and defilm phenomenon.

Electronic components of circuit boards of signal control systems. Due to the miniaturization of the volume of modern lamps and lanterns, the internal space is smaller and smaller, and the structure is compact, resulting in the phenomenon of higher internal temperature. The layout of the control circuit board components of some lamps and lanterns is often only close to the light source. Therefore, manufacturers should pay special attention to the circuit board location of the ambient temperature should not exceed 50, the temperature is too high, plus electronic components (electronic components: focus on consumer electronics and industrial chain..

Such as IC block and other electrical components will heat themselves when working, will also damage the components lose function, should be taken to block heat radiation shielding and cold air heat dissipation measures. Transformer, ballast should also take this measure.

Internal wire. No more than 90, should be protected by high temperature resistant insulation sleeve, close to the light source, high temperature parts or by the highest heat source, should be flame retardant and high temperature resistant wire material.

In short, the lamp must be equipped with a limited temperature protector, the design of the temperature controller position, must be integrated with the above status quo, to find an ideal position, so that it can implement comprehensive monitoring to ensure its safety. At the same time, when the cooling system fails and the fan is blocked (stopped), the thermostat should not automatically power off for a long time. Generally, the power off time is 5 minutes and 12 minutes. After the power off, the internal parts should not be damaged or unsafe. Manufacturers must do safety tests for reliability in this area.

The rationality of the structural design of the heat dissipation system is the guarantee of reducing the internal temperature. The form of heat dissipation is radiation and convection, the coolant is air. The increase in temperature is proportional to the power of the bulb and inversely proportional to the surface area of the lamp. Because the light bulb radiation heat source is radiated into the light beam through the optical system, in the form of light and infrared radiation, that is, 1/3 of the heat dissipation to the front part of the lamp (the front side of the diaphragm), and the remaining 2/3 to be dispersed by the lamp shell, forming the surface temperature of the lamp. If the heat dissipation of the lamp is not smooth, the surface and internal environmental temperature of the lamp will rise, and have an impact on the surrounding environment, the occurrence of hidden combustion events. Therefore, when the manufacturer designs, it is necessary to design the structure of the heat dissipation system, so that the heated air in the lamp is discharged in a straight line and unobstructed.

The heat dissipation of lamps and lanterns usually adopts the inlet heat dissipation, the exhaust heat dissipation, the inlet heat dissipation and the natural heat dissipation. The choice of heat dissipation mode must be determined according to the ambient temperature distribution of the various areas inside the lamp, such as the light source area, the beam area, the signal control area and the electrical components area, and also consider the factors such as the shell material and surface area of the lamp. It is worth noting that the direct light source should not be seen at the heat dissipation outlet of the shell, and the baffle plate is provided inside the shell, which cannot affect the wind path and heat dissipation effect. The following introduces the design points of two kinds of cooling system structure often used in computer lamps and lanterns:

Air inlet heat dissipation lamp, that is, the wind direction of the fan inward into the air (cold air blowing in, hot air discharging). It can quickly and effectively reduce the temperature of the bulb and the ambient temperature of the light source area, but also make the internal area of the ambient temperature equalization. Hot air is emitted through the heat dissipation outlet of the housing.

The structure may blow the highest temperature of the light source area to other areas, especially increasing the surface temperature of the signal control panel, motor, transformer, optical lens, shell and wire. Therefore, during the design, attention should be paid to shield the other areas, design the wind guide structure, block the influence of the highest heat source, and form a good wind guide cooling system. The highest heat energy of the bulb is directly emitted from the heat dissipation outlet of the lamp. Choose this way of heat dissipation, must ensure that the shell of the lamp and the internal components of the surface temperature does not exceed 1 of the temperature specified in the case of use. Otherwise, the high temperature will lead to the damage of the internal components of the lamp. The position of the bulb is generally designed within the range of the fan and the heat dissipation outlet.

The characteristics of the structure: effectively reduce the ambient temperature of the light source area, protect the bulb, can make the ambient temperature balance in other internal areas, which is also the design scheme that can not be replaced by other heat dissipation methods, especially in the lamp with high power and large internal space, more suitable.

Exhaust heat dissipation lamp, that is, the wind direction of the fan to the outside (hot air out, cold air in), it can quickly and effectively light source area bulb maximum heat energy according to the stipulated direction of wind, from the heat dissipation outlet of the lamp, effectively reduce the lamp shell, internal environment temperature and internal surface temperature of each part. And the other inner regions are not affected by the highest radiation heat energy of the light source region.

This structure should have a good wind circulation, can not form wind flow short circuit. When the bulb power is large, the upper and lower symmetrical structure can be designed, forcing the temperature of the light source area directly out. If the temperature of the beam area is too high, which has an impact on the optical material, the front and rear exhaust heat dissipation structure can be designed, and the high temperature hot air in the light source area and the beam area can be directly pumped out. It is worth noting that the high temperature hot air in these two areas is directly discharged from the fan, which will increase the surface temperature of the fan. If the temperature is too high and exceeds the temperature range that the fan can withstand, the fan will burn out, the heat dissipation will not be normal, and the internal parts of the lamp will be damaged and other unsafe phenomena will occur. Therefore, manufacturers must ensure that this type of lamps in the work, the measured surface of the fan does not exceed the specified temperature to use.

The characteristics of the ventilation cooling structure: the signal control area, the electrical components area, the beam area is not affected by the high temperature of the light source area of the lamp, through the suction of the cold air filter, effectively reduce the internal parts of the work of their own heating temperature. Especially suitable for plastic shell, small interior space, compact structure of the lamp.