LED (Light Emitting Diode) dot matrix display screen

A display screen and LED chip technology, applied in the field of display screens, can solve the problems of poor heat dissipation of LED dot matrix, low luminous efficiency, short heat dissipation path, etc., and achieve the effects of convenient standardized production, good heat dissipation effect, and high heat dissipation efficiency

Inactive Publication Date: 2012-09-19
杨东佐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of poor heat dissipation, short life and low luminous efficiency of the existing LED dot matrix, the technical problem to be solved by the present invention is to provide a short heat dissipation path, and the path from each LED light-emitting unit to the heat dissipation hole is equal or approximately Equal, the air in the cooling hole can pass through the natural convection of the two ends of the cooling hole LED dot matrix display

Method used

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  • LED (Light Emitting Diode) dot matrix display screen
  • LED (Light Emitting Diode) dot matrix display screen
  • LED (Light Emitting Diode) dot matrix display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like Figures 1 to 3 As shown, an LED dot-matrix display screen includes a heat-dissipating PCB substrate 1, a heat-dissipating substrate 2, integrated circuit components (not shown), and a uniform array of LED lamp beads 3, and each LED lamp bead 3 contains only one LED chip , electrically connecting the layout circuit conductive layer (not shown) of the positive and negative pins of the LED lamp bead 3 , the electric control device 9 and the data interface 10 . The LED lamp bead 3 is fixed on the heat dissipation PCB substrate 1, the conductive layer of the layout circuit is arranged on the surface of the heat dissipation PCB substrate 1 on which the lamp bead 3 is fixed, and the integrated circuit components are arranged on the heat dissipation PCB substrate 1 and the fixed LED lamp bead 3 phase. back face. The surface of the heat dissipation PCB substrate 1 facing away from the LED lamp bead 3 is attached and fixed to the heat dissipation substrate 2 . At the cent...

Embodiment 2

[0049] like Figures 4 to 6 As shown, an LED dot-matrix display screen includes a display frame 31, a light-transmitting sealing plate 32, a light-transmitting cover 33, a uniform array of LED lamp beads 34, a heat-dissipating PCB substrate 35, and a heat-dissipating substrate 36. The integration of control and drive Circuit components (not shown), a layout circuit conductive layer (not shown) electrically connected to the positive and negative pins of the LED lamp bead 34 , the electric control device 37 , and the data interface 38 . The LED lamp bead 34 is fixed on the heat dissipation PCB substrate 35, the conductive layer of the layout circuit is arranged on the surface of the heat dissipation PCB substrate 35 on which the lamp bead 34 is fixed, and the integrated circuit components are arranged on the heat dissipation PCB substrate 35 and the fixed LED lamp bead 34 phase. back face. The surface of the heat dissipation PCB substrate 35 provided with integrated circuit com...

Embodiment 3

[0053] Such as Figure 7 to Figure 9 As shown, an LED dot-matrix display screen includes a light-transmitting cover 60, a plastic plate 61 for positioning the lens, a PCB board 62, a heat dissipation base 63, a flow channel cover plate 64, an LED light-emitting unit, and a cloth electrically connected to the LED light-emitting unit. The conductive layer of the layout circuit (not shown), the integrated circuit components for control and driving (not shown), the electric control device 65 electrically connected with the external power supply and the conductive layer of the layout circuit, and a data interface 66 . Each LED light-emitting unit includes an LED chip 67, a lens 68, and a gold wire 69 electrically connecting the LED chip 67 and the conductive layer of the layout circuit.

[0054] The heat dissipation base 63 includes a bottom plate 70 , and a plurality of chip fixing bosses 71 protruding from the bottom plate 70 integrally formed with the heat dissipation base 63 , ...

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PUM

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Abstract

The invention relates to an LED (Light Emitting Diode) dot matrix display screen which comprises a radiating base, uniformly arrayed LED illuminating units, an imaging controller, and layout circuit conductive layers electrically connected with the LED illuminating units, wherein each of the LED illuminating units is independently in electric connection with the imaging controller through each of the layout circuit conductive layers; the LED illuminating units are fixedly arranged on the radiating base; a radiating through hole is formed in the central position of each four adjacent LED illuminating units; each of the LED illuminating units is adjacent to the radiating through hole; the radiating through hole passes through the radiating base; and two ends of the radiating through hole are both communicated with the outside air, thereby forming a convective air radiating channel. The LED dot matrix display screen has the advantages that a large amount of heat can not be accumulated in the radiating base, so that the service life of an LED light source is not influenced and the radiating efficiency is high; the radiating through hole is conveniently and quickly processed; the manpower, material resources and financial resources are saved; and the cost of a radiating device and even the cost of the LED dot matrix display screen with the radiating device can be greatly reduced.

Description

technical field [0001] The invention relates to a display screen, in particular to an LED dot matrix display screen. Background technique [0002] Compared with traditional light sources, LED light-emitting diodes have no lead, mercury, no flicker, energy saving and environmental protection, long service life, fast response speed, vibration resistance, easy maintenance, high brightness, low energy consumption, less ultraviolet radiation and environmental pollution, and use High security and many other advantages are widely used in display screen imaging. [0003] The light decay and lifetime of LED light sources are directly related to their junction temperature. LED lights, especially high-power LED light sources, concentrate heat when emitting light. If the heat generated by the LED chip is not dissipated in time, the junction temperature will be very high and the lifespan will be short. According to Ares' law, for every 10°C decrease in temperature, the life span will b...

Claims

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Application Information

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IPC IPC(8): G09F9/33H05K7/20
Inventor 杨东佐
Owner 杨东佐
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