Vehicular UV Light Layout With Side-by-Side Fan Cooling
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Solution Overview
Problem
Existing light emitting devices for vehicles, particularly those emitting deep ultraviolet light, face challenges in reducing their projection dimension when mounted on a ceiling, which requires additional vehicle space and poses a risk of head injury to passengers. Additionally, these devices need improved cooling efficiency due to the high energy output of deep ultraviolet light.
Innovation Solution
The proposed light emitting device features a housing with a box shape, including a cooling fan device in one section and a light emitter in another. The light emitter is arranged next to the cooling fan device and includes a board member with angled LED boards that increase the irradiated area while maintaining a thin profile. This configuration enhances cooling efficiency by stabilizing air flow and effectively discharging heated air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the light emitter and cooling fan are disposed to overlap each other with heat storage therebetween, then cooling function is provided, but the projection dimension increases
Solution Approach 1:
The patent transitions from a vertical stacking arrangement (overlap in one dimension) to a lateral arrangement where the light emitter and cooling fan are positioned side-by-side. This dimensional change allows the cooling fan to be disposed laterally along the mount surface rather than vertically above or below the light emitter, thereby reducing the projection dimension while maintaining the cooling function through proper air flow path design.
2Object-affected harmful factors
If deep ultraviolet light is used for virus removal, then virus removal effect is improved, but cooling efficiency deteriorates due to higher energy output
Solution Approach 1:
The patent employs a cooling fan device with an air intake hole and air discharge hole to create a forced convection air flow system. The air flow path is designed to efficiently remove heat generated by the deep ultraviolet light emitter, using pneumatic principles to circulate air through the housing and across the light emitter, thereby improving cooling efficiency despite the high energy output of deep UV light.
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
The solution achieves a thinner profile for the light emitting device, reducing the risk of head injury and accommodating smaller vehicle spaces. The improved cooling efficiency ensures effective heat management, maintaining the high energy output of deep ultraviolet light while preventing overheating.
Implementation Method 1
a cooling fan device (30) arranged in the rear section (R2)
Implementation Method 2
a first deep ultraviolet light emitting element (421) mounted on the lower surface (411L) of the first board (411)
Implementation Method 3
The first board (411) and the second board (412) are arranged next to each other in a right-left direction (an X-axis direction)
Data Source
AI summary
A light emitting device to be mounted on a mount surface of a vehicular compartment includes a housing including a first section having an air intake hole and a second section having an air discharge hole, a cooling fan device arranged in the first section, and a light emitter arranged in the second section. The housing further includes a discharge cavity having the discharge hole. The light emitter and the cooling fan device are arranged in a first arrangement direction laterally along the mount surface. The light emitter includes a board member and a light emitting element. The board member has a first surface that is opposite the mount surface and a second surface that is an opposite surface of the first surface and on which the light emitting element is mounted. The first surface of the board member is defined as a portion of the discharge cavity.