Automobile lamp defogger and defroster device
By designing a defog defrosting device in car lamps and using hot water circulation and radiator to control temperature, the problem of frosting of internal fog and external cover of lamps is solved, the light distribution performance is improved, driving safety is ensured, and the service life of lamps is extended.
Patent Information
- Application Number
- CN202421417519.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The fog inside the car lamp and the frost on the outer cover will cause light to deviate, affect the light distribution performance, and even cause glare, posing a threat to driving safety. At the same time, the fog will corrode electronic devices, causing the lamp function to fail.
A defog and defrosting device for automobile lamps is designed, including lamp masks, lamp housings, radiators, fans, water inlet pipes, circuit water pipes and temperature sensors. Through the hot water circulation and the action of the radiator, the temperature is controlled to defrost and defog, and heat exchange is performed through the ventilation holes.
It effectively solves the problem of frosting inside the lamp and the external cover, reduces light changes and glare defects, avoids the corrosion of the fog on electrical components, and extends the service life of the lamp.
Smart Images
Figure CN222703135U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile lamps, in particular to a demisting and defrosting device for automobile lamps. Background Art
[0002] Since automotive lamps need to provide various lighting functions, the internal light sources are mostly halogen or LED. The nature of their light emission is photoelectric. 20%-30% of the power is used for light emission, and 70%-80% generates a lot of heat. When the lamp is lit, it will form a temperature difference with the external natural environment. This is the physical root cause of lamp fog and even frost.
[0003] When considering this factor in lamp design, the common practice is to select a passive design mode with multiple vents to circulate the internal air to reduce this failure mode. However, due to efficiency limitations, some corners still cannot avoid the retention of water vapor, so the passive mode cannot fundamentally solve the fog and frost phenomenon.
[0004] The fog inside the lamp and the frost on the surface that has not been cleaned up will cause the light to deviate when it is refracted by the lamp mask, thus changing the propagation path of the light, affecting the light distribution performance, and even causing glare, posing a threat to driving safety. At the same time, since the fog inside the lamp cannot be dissipated in time, it will corrode the electronic components over a long period of time, which will lead to the uncertainty of the lamp failure. Utility Model Content
[0005] The purpose of the utility model is to provide a defogger and defroster device for automobile lamps, so as to solve the problems of fog inside the lamps and frost on the outer cover, reduce the light changes and possible glare defects caused by the above problems, and avoid the hidden danger of corrosion of electrical components by fog and thus cause lamp malfunction.
[0006] To achieve the above-mentioned purpose, the utility model provides a defogger and defroster device for automobile lamps, comprising a lamp mask and a lamp housing. A radiator is provided at the rear of the lamp mask, a fan is provided at the rear of the radiator, a water inlet pipe is connected to the lower end of the radiator, the water inlet pipe is connected to a water tank in the automobile, a loop water pipe is also provided, and a closed water channel is formed with the water inlet pipe; a temperature sensor is also provided, and the temperature sensor is connected to the controller through a wiring harness.
[0007] As a further solution of the utility model: the temperature sensor is used to sense the temperature threshold inside the lamp, and the temperature threshold is set between -10°C and 10°C.
[0008] As a further solution of the utility model: hot water flows in the water inlet pipe.
[0009] As a further solution of the utility model: the controller controls the solenoid valve, which is arranged at the connection between the water inlet pipe and the water tank to control the inlet and outlet of hot water. The hot water in the water tank enters the radiator through the water inlet pipe to control the start-up of the fan.
[0010] As a further solution of the utility model: ventilation holes are arranged around the lamp housing.
[0011] Compared with the prior art, the utility model solves the problems of fog inside the lamp and frosting on the outer cover by adding a water inlet pipe, a loop water pipe and a water tank in the vehicle to form a loop, utilizes the heat of the hot water in the water tank, and releases the heat through the radiator and the fan, thereby reducing the light changes and possible glare defects caused by the above problems, and avoiding the hidden danger of corrosion of electrical components by fog and causing lamp malfunction. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The utility model is a structural schematic diagram of a defogger and defroster device for automobile lamps.
[0013] Figure 2 The utility model is a working principle diagram of a defogger and defroster device for automobile lamps.
[0014] Figure 3 It is a schematic diagram of the structure of the lamp housing of the utility model.
[0015] Figure 4 yes Figure 3 Cross-section view in the AA direction.
[0016] In the figure: 1. lamp mask, 2. lamp housing, 3. water inlet pipe, 4. wiring harness, 5. temperature sensor, 6. fan, 7. radiator, 8. vent. DETAILED DESCRIPTION
[0017] The utility model will be further described below in conjunction with the accompanying drawings.
[0018] like Figure 1 As shown, the defogger and defrost device for automobile lamps comprises a lamp mask 1, a lamp housing 2, a radiator 7 is arranged at the rear of the lamp mask 1, a fan 6 is arranged at the rear of the radiator 7, a water inlet pipe 3 is connected to one end below the radiator 7, the water inlet pipe 3 is connected to the water tank in the automobile, and a loop water pipe is also arranged to form a closed water path with the water inlet pipe 3; a temperature sensor 5 is also arranged inside the lamp, and the temperature sensor 5 is connected to the controller through a wiring harness 4.
[0019] The temperature sensor 5 is used to sense the temperature threshold inside the lamp, and the temperature threshold is set between -10°C and 10°C.
[0020] In order to increase the temperature inside the lamp to achieve the defrosting and demisting functions, hot water flows in the water inlet pipe 3 .
[0021] Working principle Figure 2 As shown, the controller controls the solenoid valve, which is arranged at the connection between the water inlet pipe and the water tank to control the inlet and outlet of hot water. The hot water in the water tank enters the radiator through the water inlet pipe to control the start of the fan.
[0022] like Figure 3 , Figure 4 As shown, ventilation holes 8 are arranged around the lamp housing 2 for internal air circulation.
[0023] The working process of the utility model is as follows: when the vehicle is started, the water in the water tank is heated, and the temperature sensor 5 installed on the lamp starts to detect the temperature inside the lamp body. When the temperature is detected to be lower than the set temperature threshold, the controller turns on the solenoid valve to guide the hot water in the water tank into the radiator 7 through the water inlet pipe 3, and at the same time controls the start fan 6 through the wiring harness 4 or BCM to speed up the cycle. The lamp performs heat exchange through the ventilation holes. When the temperature sensor 5 detects that the temperature inside the lamp body reaches the designed maximum value, the controller closes the solenoid valve, cuts off the water path and turns off the electric fan. The utility model can also achieve the purpose of energy saving and environmental protection without increasing the energy consumption of the whole vehicle.
Claims
1. A defogger and defroster device for automobile lamps, comprising a lamp mask (1) and a lamp housing (2), characterized in that: A radiator (7) is arranged at the rear of the lamp cover (1), a fan (6) is arranged at the rear of the radiator (7), a water inlet pipe (3) is connected to one end below the radiator (7), the water inlet pipe (3) is connected to a water tank in the car, a loop water pipe is also arranged, and a closed water path is formed with the water inlet pipe (3); a temperature sensor (5) is also arranged, and the temperature sensor (5) is connected to the controller via a wiring harness (4).
2. The automobile lamp defogger and defroster device according to claim 1, characterized in that: The temperature sensor (5) is used to sense the temperature threshold inside the lamp, and the temperature threshold is set between -10°C and 10°C.
3. The automotive lamp defogger and defroster device according to claim 1 or 2, characterized in that: Hot water flows in the water inlet pipe (3).
4. The automobile lamp defogger and defroster device according to claim 1, characterized in that: The controller controls the solenoid valve, which is arranged at the connection between the water inlet pipe (3) and the water tank and is used to control the inlet and outlet of hot water.
5. The automobile lamp defogger and defroster device according to claim 1, characterized in that: Ventilation holes (8) are arranged around the lamp housing (2).