CN205640633U - Heat dissipation defogging lamps and lanterns - Google Patents

Abstract

The utility model discloses a heat dissipation defogging lamps and lanterns, include: the lamp body, arrange at the inside reflector of lamp body, install bulb on reflection of light mirror surface, clamp fixed lens and a fan of arranging in lens inboard below with the lamp body. The fan can blow off the inboard fog of lens to because the inside steam of lamps and lanterns is upwards diffusion, the piping mirror temperature that can form the lower part is less than the circumstances of top, thus fog more the poly collection in lens inboard below, so arrange with the fan that can improve fog under blows off efficiency.

Description

Heat dissipation and defogging lamps

technical field

The utility model relates to an automobile lighting system, in particular to a cooling and defogging lamp.

Background technique

Automobile lighting is an important auto part that provides night lighting and vehicle signals. It has experienced development stages such as kerosene lamps, acetylene lamps, incandescent lamps, halogen lamps, and xenon lamps. The lighting performance is gradually enhanced, and the shape is more beautiful. Lamps are gradually changing from purely functional parts to appearance parts, and there is a trend that the appearance is more important than its function. However, the problem of fogging of lamps has always plagued the development of lamps. Fogging not only affects the appearance of lamps, but also affects their light distribution.

At present, the main method to solve the fogging of lamps is to add anti-fog coating on the surface of lamps, but the anti-fog coating only spreads the water droplets on the surface of the light distribution mirror, making it difficult to see, and cannot completely eliminate fogging. If there is serious fogging, it will also form a leakage phenomenon on the surface of the lamp, which will affect the appearance instead. Anti-fog coatings add to the cost of the luminaire, and they fail after their expiration date.

Utility model content

The heat-dissipating and defogging lamp disclosed by the utility model can judge the fog generation time and eliminate the fog inside the lamp in a targeted manner, and the cost of the lamp does not increase much, and can be used for a long time.

The heat dissipation and defogging lamp disclosed by the utility model comprises:

Lamp housing;

The reflector is arranged inside the lamp housing;

The light bulb is installed and fixed in the installation hole at the bottom of the reflector through the lamp holder;

The light distribution mirror is arranged according to the direction of light emission and is clamped and fixed with the lamp housing;

A fan is arranged under the inner side of the light distribution mirror.

Further, it also includes a monitoring system for judging the timing of demisting and controlling the start and stop of the fan.

Further, the monitoring system includes,

The temperature sensor inside the lamp is arranged in the lamp housing;

The temperature sensor outside the lamp is arranged outside the lamp housing;

The controller is electrically connected with the light bulb, the temperature sensor inside the lamp and the temperature sensor outside the lamp respectively.

The beneficial technical effect of the utility model is:

1) Install a fan under the inner side of the photometric mirror. The fan can blow away the fog inside the photometric mirror. Since the heat inside the lamp diffuses upwards, the temperature of the lower photometric mirror will be lower than that of the upper part, so more fog will gather. It is below the inner side of the light distribution mirror, so placing the fan below can improve the mist blowing efficiency.

2) Through a controller to control the temperature sensor inside the lamp, the temperature sensor outside the lamp and the bulb to collect and judge the temperature inside and outside the lamp, as well as to turn on and off the bulb, it can be used when the temperature difference between the inside and outside of the lamp housing is large (when fog is likely to be generated), Effective operation of the control fan.

Description of drawings

Figure 1 is a structural diagram of a heat dissipation and defogging lamp;

Figure 2 is a connection diagram of the monitoring system.

detailed description

See Figure 1. The reason for the fogging of the lamp is: when the light bulb 1 is turned on, the heat emitted by the light bulb 1 gradually heats the air inside the lamp. If the humidity in the environment is high at this time, damp heat will form inside the lamp Air. When the hot and humid air inside the photodistributor 6 encounters the cooler outer surface of the photodistributor 6 , condensation will occur on the inner surface of the photodistributor 6 due to the temperature difference between inside and outside, resulting in fogging. This is similar to the drops of water on the window glass of a car in winter.

Referring to Fig. 1 and Fig. 2, the heat-dissipating and defogging lamps include: lamp housing 7; reflector 8, arranged inside the lamp housing; light bulb 1, installed and fixed in the mounting hole at the bottom of the reflector through a lamp holder; light distribution mirror 6, Arranged according to the light emitting direction and clamped and fixed with the lamp housing 7; a fan 5 is arranged under the inner side of the light distribution mirror 6.

It also includes a monitoring system 2 for judging the timing of demisting and controlling the start and stop of the fan.

The monitoring system 2 includes: a temperature sensor 3 inside the lamp, which is arranged inside the lamp housing; a temperature sensor 4 outside the lamp, which is arranged outside the lamp housing;

The controller 2 is electrically connected to the bulb 1, the temperature sensor 3 inside the lamp and the temperature sensor 4 outside the lamp respectively.

The controller 2 continuously obtains the switch status of the light bulb 1, and then controls the fan 5 through the following scheme to realize the judgment and control of the timing of mist blowing.

1) Bulb lighting stage

The controller receives the light bulb signal, and the controller controls the fan to run.

As the bulb is turned on, the temperature inside the fixture rises, hot and humid air forms, and fogging conditions also form. The operation of the fan drives the air circulation inside the lamp. Based on the difference in temperature between the upper and lower sides of the light distribution mirror, the fog generated mostly gathers in the lower part of the inner surface of the light distribution mirror. The fan is arranged at the lower end of the inner surface of the light distribution mirror.

2) Bulb off stage

At this time, the bulb is turned off, but the air inside the lamp is still relatively hot, and the fogging condition has not been completely eliminated.

When the controller receives the signal that the bulb is off, the controller obtains temperature signals from the temperature sensor inside the lamp and the temperature sensor outside the lamp, and compares the temperature difference between the inside and outside of the lamp. If the temperature inside the lamp is higher than the temperature outside the lamp, the controller controls the fan to continue running. When the temperature inside the lamp and outside the lamp reach the same temperature, the fogging condition does not exist, and the controller controls the fan to turn off.

Claims (3)

1. Heat dissipation and defogging lamps, including: lamp housing (7); Reflector (8), arranged inside the lamp housing; The light bulb (1) is installed and fixed in the installation hole at the bottom of the reflector through the lamp holder; The light distribution mirror (6) is arranged according to the direction of light emission and is clamped and fixed with the lamp housing; It is characterized in that a fan (5) is arranged below the inner side of the light distribution mirror. 2. The heat dissipation and defogging lamp according to claim 1, further comprising a monitoring system for judging the timing of defogging and controlling the start and stop of the fan. 3. The heat dissipation and defogging lamp according to claim 2, wherein the monitoring system comprises: The temperature sensor (3) inside the lamp is arranged in the lamp housing; The temperature sensor (4) outside the lamp is arranged outside the lamp housing; The controller (2) is electrically connected to the light bulb, the temperature sensor inside the lamp and the temperature sensor outside the lamp respectively.