Anti-fog automobile lamp with efficient heat dissipation function

Abstract

The invention discloses an anti-fog automobile lamp with an efficient heat dissipation function, and relates to the field of automobile lamps. The automobile lamp comprises a high-beam and low-beam reflector, a high-beam and low-beam module, a decorative frame, a high-beam and low-beam lens, a mask and a lamp body. The radiator at the bottom of the high-beam and low-beam module is further detachably connected with a heat conduction air duct. An exhaust fan is mounted at the outlet end of the heat conduction air duct. Ventilating bent pipe assemblies are further installed on sides, facing interior of automobile, of mask and lamp body, so that external air can be led into the mask and the lamp body respectively. According to the anti-fog automobile lamp, the anti-fog effect of the automobilelamp is achieved in various modes, the anti-fog performance of the automobile lamp is remarkably improved, assembling is easy, related parts are convenient to replace, and practicability is high.

Description

technical field [0001] The invention belongs to the field of automobile lamps, and in particular relates to an anti-fog automobile lamp with high heat dissipation. Background technique [0002] Fogging of automobile lamps is a common physical phenomenon. The main reason for fogging is that the internal humidity of the lamp is high and the temperature distribution is uneven. Fog is easily formed in the low temperature area. [0003] At present, the automobile industry mainly prevents the generation of fog by adding desiccant, spraying anti-fog coating on the inner surface of the mask, or adding fans and air ducts inside the lamps. [0004] The prior art has the following problems: the method of adding a desiccant to absorb air moisture is time-sensitive, and the desiccant is easily saturated in a high-temperature and high-humidity environment, and loses its effect when the desiccant is saturated. The anti-fog coating has high requirements on the spraying process, and it is ...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has the following problems: the method of adding desiccant to absorb air moisture is time-sensitive, and the desiccant is easily saturated in a high-temperature and high-humidity environment, and loses its effect when the desiccant is saturated

The anti-fog coating has high requirements on the spraying process, and it is easy to cause the problem of fog sagging due to the problem of the spraying process, and a series of problems such as aging of the anti-fog coating will occur after a long time

Use the fan to make the defogging air duct in the internal structure, which increases the complexity of the structure and also increases the difficulty of assembly. In addition, it is also possible to add a vent cap, a ventilating film, or ventilating behind the lamp body in the low-temperature fog-prone area. Elbow (among them, in terms of air permeability, ventilating elbow>ventilating film>venting cap), but the optimization effect of this method is not obvious, and it cannot prevent the generation of fog

[0005] In terms of heat dissipation, the current high and low light LEDs mainly dissipate heat through the internal fan and radiator, and use the fan convection to bring the heat of the radiator to all parts of the lamp, instead of directly taking away the internal heat of the lamp. The heat of the radiator needs Firstly through convection and then heat conduction to the outside through the lamp body mask. For the local far and near beam radiator, the heat dissipation efficiency is improved, but for the interior of the lamp as a whole, the heat dissipation efficiency has not been greatly improved, so it will indirectly increase the internal temperature of the lamp. , when the outer surface of the mask is cold and the sudden temperature change causes the temperature difference inside the lamp to be too large, the low temperature area of ​​the mask will easily form fog

Images