Lighting Device with Reflective Cavity for Heat Dissipation
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Solution Overview
Problem
Existing lighting devices with a Baorong snap-fit base require the light source to protrude from the housing, leading to light loss and inefficient heat dissipation due to the protrusion and the presence of transfer sections that hinder light reflection or refraction.
Innovation Solution
A lighting device design where the light source is retracted inside a containing cavity with a heat dissipation device, and a front-end housing with a hollow cavity allows light to pass through, reducing light loss and improving heat conduction efficiency by shortening the heat conduction distance between the light source and the heat dissipation area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light source protrudes from the housing to ensure effective light reflection/refraction in optical accessories, then light output effect is improved, but heat dissipation efficiency deteriorates and light loss increases
Solution Approach 1:
The patent introduces a reflective cavity as an intermediary structure between the light source and optical accessories. The cavity with reflective inner wall acts as a mediator that redirects light that would otherwise be lost, directing it toward the optical accessories. This resolves the contradiction by maintaining effective light output without requiring the light source to protrude, thus preventing light loss while achieving the desired illumination effect.
Solution Approach 2:
The patent utilizes the spatial dimension by creating a three-dimensional reflective cavity structure rather than relying on simple linear protrusion. The cavity extends in multiple directions within the housing, providing volumetric light reflection pathways. This dimensional approach allows light to be effectively directed to optical accessories without the light source needing to extend beyond the housing boundary, thereby maintaining compact heat dissipation geometry.
2Illumination intensity
If the light source protrudes from the housing to reach reflection/refraction sections, then light reflection is improved, but heat conduction distance increases reducing heat dissipation efficiency
Solution Approach 1:
The reflective cavity serves as an intermediary that provides light reflection functionality without requiring physical protrusion of the light source. The cavity's reflective inner wall acts as the mediating surface that redirects light toward optical accessories, eliminating the need for the light source to extend outward. This maintains short heat conduction distance while achieving effective light reflection, thus resolving the contradiction between light reflection efficiency and heat dissipation performance.
Solution Approach 2:
The patent extracts the light reflection function from the light source itself and relocates it to the reflective cavity structure. By separating the light generation function (light source) from the light reflection function (cavity with reflective wall), the design allows the light source to remain in its optimal position for heat dissipation while the cavity provides the necessary light redirection to optical accessories.
3Temperature
If the light source is retracted inside the housing, then heat conduction efficiency is improved, but light loss increases due to transfer sections
Solution Approach 1:
The reflective cavity acts as an intermediary structure that compensates for the light source being retracted inside the housing. The cavity's reflective inner wall intercepts light that would otherwise be lost in transfer sections and redirects it toward optical accessories. This mediator structure ensures that even with the light source retracted for optimal heat conduction, light loss is minimized by providing alternative reflection pathways that guide light to where it is needed.
4Illumination intensity
If the light source protrudes from the housing, then light can reach reflection/refraction sections effectively, but device complexity increases due to protrusion structure
Solution Approach 1:
The patent merges the light reflection function into the housing structure itself by incorporating a reflective cavity within the housing boundaries. Instead of having separate protruding components for light redirection, the housing is designed to include the reflective cavity as an integrated feature. This consolidation eliminates the need for protrusion structures while maintaining effective light delivery to optical accessories, thereby reducing device complexity while preserving illumination effectiveness.
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 design enables effective light output to optical accessories without protrusion, reducing light loss and enhancing heat dissipation efficiency, thus improving the overall performance and usability of the lighting device.
Implementation Method 1
a light source, wherein the light source is in heat-conduction connection with the heat dissipation device
Data Source
AI summary
A lighting device is provided and includes: a lamp main housing including a containing cavity, wherein a recess in communication with the containing cavity and a snap-fit structure configured to connect an optical accessory are disposed at an end of the lamp main housing, and a position of the recess corresponds to a position of the snap-fit structure; a heat dissipation device disposed in the containing cavity; a light source in heat-conduction connection with the heat dissipation device, and located inside of the containing cavity or the recess; a front-end housing including a throughout hollow cavity, wherein an end of the front-end housing is disposed on the light source, and another end of the front-end housing faces an outer side of the recess and passes through the recess; wherein light emitted by the light source passes through the hollow cavity of the front-end housing and is emitted outward.