Rotating LED Vehicle Lamp for Heat Dissipation and Uniform Illumination
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Solution Overview
Problem
Current vehicle lamps with matrix headlamp technology face challenges in heat dissipation and boundary lines due to the concentration of numerous LED elements, which reduces heat resistance performance and affects light emission quality.
Innovation Solution
A vehicle lamp with a rotating light source that includes a signal transmitter, LED unit, controller, power transmitter, and power receiver, where the LED unit is fixed to a rotary shaft, and the power is applied through a slip ring or electromagnetic induction, allowing for reduced LED elements and rotation to eliminate boundary lines in light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If numerous LED elements are concentrated on a PCB to implement matrix headlamp technology, then light emission control precision is improved, but heat dissipation performance deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the LED unit rotatable rather than fixed on the PCB. The LED unit can rotate around a rotary shaft, allowing dynamic repositioning of LED elements. This dynamic configuration enables better heat dissipation by changing the spatial distribution of heat-generating elements while maintaining precise light emission control through rotational positioning and individual LED element activation.
2Area of stationary object
If the number of LED elements is increased to improve light coverage, then illumination area is improved, but heat generation increases
Solution Approach 1:
The patent applies the dimensionality change principle by transitioning from a static two-dimensional PCB layout to a three-dimensional rotational configuration. The LED unit rotates around a rotary shaft, adding the temporal/dimensional aspect of rotation. This allows the same LED elements to cover a larger illumination area through rotational movement while distributing heat generation over time and space, reducing peak heat accumulation.
Solution Approach 2:
The dynamic rotation of the LED unit allows the illumination area to be expanded without proportionally increasing the number of LED elements. By rotating the LED unit, the light from a smaller number of elements can cover a larger area dynamically, while the heat generation remains manageable due to the reduced element count and distributed thermal load.
3Illumination intensity
If LED elements are placed close together to maximize light density, then light emission intensity is improved, but boundary lines appear in the emitted light
Solution Approach 1:
The patent applies dynamics by rotating the LED unit, which dynamically separates the LED elements from each other in the light emission path. As the LED unit rotates, the elements are positioned at different angular locations, effectively increasing the interval between them in the projected light pattern. This dynamic spacing eliminates boundary lines while maintaining high light emission intensity through the rotational distribution of elements.
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 configuration improves heat resistance and allows for boundary-free surface emission with a three-dimensional light source, reducing the number of LED elements needed and enhancing light distribution without dark spots.
Implementation Method 1
The applied voltage may be applied to the one or more LED elements from the power transmitter by electromagnetic induction generated between the power transmitter and the power receiver, when the LED unit rotates.
Data Source
AI summary
A vehicle lamp with a rotating light source is provided. The lamp includes a signal transmitter that receives a signal from one or more sensors provided in a vehicle and an LED unit having one or more LED elements for irradiating light to the outside of the vehicle. A controller receives the signal from the signal transmitter. A power transmitter and a power receiver receive an applied voltage to be applied to the one or more LED elements from the controller, and apply the applied voltage to each of the one or more LED elements, and a driver that rotates the LED unit. The controller determines an image shape according to the signal, and calculates the applied voltage to be applied to the one or more LED elements according to the computed image shape.