Rotating LED Lamp with Ball Joint Heat Sink
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Solution Overview
Problem
Conventional LED lamps with adjustable illumination angles have complex structures, increased size, and heat dissipation issues, leading to high manufacturing costs and reduced service life due to frictional wear and tear.
Innovation Solution
A compact LED lamp design with a rotatably movable light source unit and a ball joint configuration between the mounting bracket and heat dissipation member, utilizing spherical indentions and an elastic movable member to minimize friction and maintain the desired illumination angle, along with a driving ring for sliding movement to adjust the angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional light adjustable device is installed into the LED lamp, then the illumination angle becomes adjustable, but the structure becomes complicated and the size is enlarged
Solution Approach 1:
The patent combines the light adjusting module with the heat dissipation member by integrating the rotatable member into the heat dissipation structure. The guiding post is directly connected to the heat dissipation member, eliminating separate connection components and simplifying the overall structure while maintaining adjustability functionality.
Solution Approach 2:
The heat dissipation member serves dual functions: it dissipates heat from the LED light source and acts as the structural base for the illumination angle adjustment mechanism. The guiding post simultaneously provides mechanical guidance and structural support, reducing the need for additional components.
2Adaptability or versatility
If a conventional light adjustable device is installed into the LED lamp, then the illumination angle becomes adjustable, but the installation space is enlarged
Solution Approach 1:
The light adjusting module is nested within the existing LED lamp structure. The rotatable member is positioned inside the heat dissipation member, and the guiding post fits within the internal cavity of the heat dissipation structure, allowing the adjustment mechanism to occupy minimal additional space.
Solution Approach 2:
The adjustment mechanism utilizes rotational movement in a circular path rather than linear extension, allowing the light source to be repositioned angularly without increasing the overall length or volume of the lamp fixture.
3Adaptability or versatility
If the light adjustable device is installed into the LED lamp, then the illumination angle becomes adjustable, but the heat dissipation is blocked
Solution Approach 1:
The heat dissipation member is designed with segmented fin structures that extend radially outward, creating channels for air flow. The rotatable member is positioned between these fins rather than blocking the entire heat dissipation path, allowing heat to be dissipated through multiple surfaces while the adjustment mechanism operates.
Solution Approach 2:
The heat dissipation member features a curved, spherical outer surface with radial fins, maximizing the surface area for heat radiation in all directions. This curved geometry allows heat to dissipate efficiently around the rotatable member rather than being blocked by flat surfaces.
4Adaptability or versatility
If the hemispherical rotatable member is used for light angle adjustment, then the illumination angle becomes adjustable, but the frictional force is increased
Solution Approach 1:
A ball bearing is introduced as an intermediary element between the guiding post and the rotatable member. The ball bearing converts sliding friction into rolling friction, significantly reducing the frictional force required for rotation while maintaining the mechanical connection and guidance functionality.
Solution Approach 2:
The patent replaces the conventional sliding contact mechanism with a ball bearing-based rolling contact system. This substitution reduces friction from sliding friction to rolling friction, making the adjustment mechanism easier to operate and reducing wear on the components.
5Adaptability or versatility
If the hemispherical rotatable member is used for light angle adjustment, then the illumination angle becomes adjustable, but the wear and tear is increased
Solution Approach 1:
The ball bearing serves as a mediator that protects the guiding post and rotatable member from direct contact and wear. By introducing this intermediate rolling element, the friction and wear are concentrated on the hard, replaceable ball bearing rather than the structural components, significantly extending the service life of the adjustment mechanism.
Solution Approach 2:
The ball bearing is pre-installed as a protective element that cushions and absorbs the wear and tear that would otherwise occur between the guiding post and rotatable member. This preventive measure ensures that the main structural components remain intact for longer periods.
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 simplifies the structure, reduces the size and installation space, enhances the service life by minimizing wear and tear, and maintains the desired illumination angle while effectively dissipating heat, thus addressing the limitations of conventional LED lamps.
Implementation Method 1
the frictional coefficient of the hemispherical rotatable member is relatively large, such that the frictional force between the hemispherical rotatable member and the guiding post will be increased when the light angle adjustment is actuated frequently
Implementation Method 2
the movable member is an elastic member being elastically deformed after the movement of the light source unit so as to maintain the desired illumination angle of the LED lamp
Implementation Method 3
the conventional LED lamp has a common heat dissipation problem. Accordingly, the heat dissipation member requires dissipating high heat from the LED lamp
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A lamp includes a light casing, a light source unit and a light adjusting module. The light casing includes a base and a mounting bracket disposed on the base to form an accommodation cavity. The light source unit is disposed inside the accommodation cavity, wherein the light source unit includes a heat dissipation member and a light emitter coupled at the heat dissipation member. The light adjusting module includes a movable member disposed between the mounting bracket and the heat dissipation member. When an actuation force is applied to the light source unit, the light source unit rotates in the accommodation cavity to selectively adjust the illumination angle of the light source unit.