Vehicle Lighting Device Radiating Module Heat Dissipation
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Solution Overview
Problem
Conventional vehicle headlamp lighting devices face increased production cost, weight, and reduced space utilization due to the use of separate cooling fans, which also reduce cooling efficiency and lead to issues like freezing from lack of infrared and ultraviolet radiation, and have shorter lifespan for both fans and LEDs.
Innovation Solution
A lighting device with a second radiating module composed of different thermal conductive materials, integrated with a first radiating module through insert injection molding, removes the need for a fan and enhances radiant heat properties, allowing for snow melting, defrosting, demisting, and defogging by radiating heat to the light emitting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate cooling fan is mounted to emit heat from the LED, then heat emission is improved, but production cost and weight are increased
Solution Approach 1:
The patent combines the cooling fan function with the LED module by integrating a heat-emitting structure directly into the LED assembly. The LED module itself is designed to emit heat in a direction that melts snow and ice, eliminating the need for a separate cooling fan component.
Solution Approach 2:
The LED module serves dual functions: light emission and heat emission for snow melting. By designing the heat dissipation structure to also function as a snow melting device, the patent achieves multi-functionality, reducing the number of separate components needed.
2Temperature
If a separate cooling fan is mounted to emit heat from the LED, then heat emission is improved, but space utilization is reduced
Solution Approach 1:
The patent merges the cooling and snow melting functions into the LED module structure itself. The heat emitting surface is integrated into the existing LED assembly, eliminating the need for additional space-consuming separate cooling components.
3Temperature
If a cooling fan is used for long hours, then heat emission is maintained, but cooling property is reduced due to hot windy generation
Solution Approach 1:
Instead of using a fan to force air circulation for cooling, the patent inverts the approach by allowing natural heat emission from the LED module to directly melt snow and ice. This passive heat emission approach avoids the problems associated with active fan cooling.
4Temperature
If a separate cooling fan is mounted, then heat emission is improved, but the lifespan of both the fan and LED becomes a problem
Solution Approach 1:
The patent extracts the cooling fan from the system entirely, relying instead on the inherent heat emission capability of the LED module. By removing the fan component, the patent eliminates the reliability issues and lifespan limitations associated with moving parts.
5Temperature
If a separate electric motor is applied for the cooling fan, then heat emission is improved, but the low power advantage of LED is reduced
Solution Approach 1:
The patent removes the electric motor and cooling fan system entirely, utilizing the natural heat emission from the LED module for snow melting. This eliminates the additional power consumption that would be required to drive a fan motor.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces production cost and weight, improves space utilization, and enhances radiant heat efficiency, achieving effective snow melting and defrosting while maintaining a lower thermal resistance, thus extending the lifespan of the LED and eliminating the need for a separate electric motor.
Implementation Method 1
a first radiating module configured to receive heat generated from a light source module and transmit the heat; and a second radiating module configured to receive the heat transmitted from the first radiating module and radiate the heat to a light emitting space
Implementation Method 2
radiate the heat to a light emitting space
Implementation Method 3
integrally forming a first radiating module and a second radiating module through insert injection molding
Data Source
Figure 1
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AI summary
Provided are a radiating device and a lighting device, including a first radiating module (100) configured to receive heat generated from a light source module (310); and a second radiating module (200) that comprises a first member (210) extending to the first radiating module (100) and transmitting the received heat, and a second member (230) configured to emit the heat transmitted from the first member (210) to a light emitting space, and thus a production cost and a weight can be reduced, space utilization can be improved, and snow melting of an optical member can be realized.