Downlight Heat Radiation Plate Fire Protection
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Solution Overview
Problem
Existing fire-proof downlights face challenges in heat dissipation and fire protection due to direct connection between the light source panel and heat sink, leading to rapid damage when the downlight catches fire.
Innovation Solution
A downlight design featuring a heat dissipation set with a heat dissipation annulus and heat radiation plate that conducts heat away from the light source panel without direct contact, allowing for efficient heat dissipation through the annulus and preventing quick heat transfer in case of a fire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the light source panel is directly connected to the heat sink, then heat dissipation efficiency is improved, but fire protection capability deteriorates due to rapid heat transfer to the light source panel during fire
Solution Approach 1:
The patent introduces a heat radiation plate as an intermediary component between the light source panel and the heat dissipation annulus. This plate serves as a thermal mediator that radiates heat away from the light source panel through radiation rather than direct conduction, thereby maintaining efficient heat dissipation while preventing rapid heat transfer to the light source panel during fire events.
Solution Approach 2:
The patent segments the heat dissipation system into distinct functional components: the light source panel, the heat radiation plate, and the heat dissipation annulus. This segmentation allows each component to perform its specific thermal function independently, with the heat radiation plate acting as a buffer that decouples the direct thermal connection between the light source and the heat sink, thus improving fire protection while maintaining heat dissipation efficiency.
2Reliability
If fire-proof cotton is used to cover the light source panel, then fire protection is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The heat radiation plate serves as a thermal intermediary that enables heat dissipation without requiring fire-proof cotton coverage. By radiating heat away from the light source panel, it provides fire protection through its material properties and radiation mechanism, eliminating the need for fire-proof cotton while maintaining heat dissipation capability.
3Illumination intensity
If light transmitting holes are created in the metal face ring, then light transmission is improved, but fire protection deteriorates due to penetration holes in metal structure
Solution Approach 1:
The patent extracts the light transmission function from the metal face ring by positioning the light source panel within the heat dissipation annulus structure. The light transmitting holes are no longer needed in the metal face ring because the light source is contained within the annulus, which provides fire protection while allowing light to pass through the open structure of the annulus itself.
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 design enhances fire protection and heat dissipation by preventing rapid heat transfer to the light source panel, thus reducing damage during a fire event.
Implementation Method 1
a surface of the heat radiation plate connected to the heat conduction face completely covers the heat conduction face, the light source panel being connected to the heat radiation plate through the heat conduction face
Implementation Method 2
a heat dissipation set, including a heat dissipation annulus and a heat radiation plate, where the heat dissipation annulus includes a heat dissipation cylinder provided with an accommodation cavity
Implementation Method 3
the heat radiation plate is spaced apart from the bottom of the accommodation cavity, wherein the downlight further includes a driving structure connected to the heat radiation plate
Implementation Method 4
preventing quick heat transfer in case of a fire
Data Source
Figure 1
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AI summary
A downlight (100), including: a light source apparatus (20) and a heat dissipation set (10) configured for fixing the light source apparatus (20) and dissipating heat. The heat dissipation set (10) includes a heat dissipation annulus (11) and a heat radiation plate (12). The heat dissipation annulus (11) is provided with an accommodation cavity (113) configured for accommodating the heat radiation plate (12) and defining an opening. The light source panel (21) is connected to the heat radiation plate (12) through the heat conduction face (212), and configured to guide light outward through the opening of the accommodation cavity (113). The heat radiation plate (12) receives heat at the heat conduction face (212) and radiates the received heat to an inner wall of the accommodation cavity (113). Both the light source panel (21) and the heat radiation plate (12) are arranged in a non-contact way with the inner wall of the accommodation cavity (113).