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Laser light source and laser projection display device

A laser light source and laser technology, applied in optics, instruments, projection devices, etc., can solve the problems of thermal conductive silicone grease being easily polluted by dust and thermal conductivity of thermal conductive silicone grease, and achieve stable thermal conductivity, reduce external impact, and high luminescence efficiency effect

Active Publication Date: 2022-06-28
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermally conductive silicone grease filled between the thermally conductive block 10 and the laser heat sink 16 is easily polluted by dust, resulting in a decrease in the thermal conductivity of the thermally conductive silicone grease

Method used

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  • Laser light source and laser projection display device
  • Laser light source and laser projection display device
  • Laser light source and laser projection display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] like Figure 3 to Figure 6 , Figure 12 , Figure 10 and Figure 16 As shown, an embodiment of the present invention provides a laser light source 1 . The laser light source 1 includes a heat conducting block 10 , a heat pipe assembly 12 , and a heat pipe fixing cover 11 that is fastened together with the laser housing 15 . The heat pipe fixing cover 11 and the laser housing 15 are enclosed into a receiving space. The heat pipe assembly 12 and the heat conducting block 10 are arranged in the receiving space. The surface is formed with thermally conductive material. When dissipating heat, the heat-conducting pipe absorbs the heat of the laser heat sink 16 through the heat-conducting material, and transfers the heat to the heat pipe assembly 12 , so that the heat pipe assembly 12 conducts the heat out.

[0048]Based on the structure and heat dissipation process of the above-mentioned laser light source 1, it can be known that the above-mentioned heat pipe fixing cover...

Embodiment 2

[0080] like Figure 16 As shown, the present invention also provides a laser projection display device, the laser projection display device includes a laser light source 1, an optical machine 2 and a lens 3, and the laser light source is the laser light source described in the first embodiment.

[0081] Figure 16 The arrows shown represent the light path diagram of the laser light emitted by the laser light source. Among them, the laser light source 1 is used to provide laser light to the optical machine 2; the optical machine 2 is used to modulate the laser light, and project the modulated laser light to the lens 3, so that the modulated laser light is imaged through the lens, that is, the lens will The modulated laser light is projected onto the screen, so that the modulated laser light is imaged.

[0082] Compared with the prior art, the beneficial effects of the laser projection display device provided by the embodiment of the present invention are the same as the benef...

Embodiment 3

[0085] Using thermal simulation software simulation simulation method to design such as Image 6 and Figure 7 Raised structures 112 are shown and as Figure 11 and Figure 12 The dustproof structure formed by the limiting structure 150 is shown, and the influence of the dustproof structure on the temperature Tm of the laser heat sink is simulated.

[0086] The simulation parameters are: the power of the laser is set to 150W, the speed of the fan is set to 1000RPM, 150RPM, 2000RPM, and 3000RPM, and the ambient temperature is 25°C. Radiation heat transfer was ignored in the simulation, and the thermal conductivity of the heat pipe was set to 20000 W / m·K. When forming the grid, the level of thermal blocks and heat pipes is set to 4level. Compare the laser heat sink temperature Tm with or without the dust-proof structure. The results are shown in Table 1.

[0087] Table 1 Temperature variation of laser heat sink under different simulation parameters

[0088]

[0089] Ac...

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Abstract

The invention discloses a laser light source and a laser projection display device, which relate to the technical field of laser display and are used to reduce the degree of pollution of the heat-conducting silicone grease filled between a heat-conducting block and a laser heat sink, thereby ensuring a stable thermal conductivity of the heat-conducting silicone grease. The laser light source includes a heat conduction block, a heat pipe assembly, and a heat pipe fixing cover fastened together with the laser housing. The heat pipe fixation cover and the laser housing form an accommodation space, the heat pipe assembly and the heat conduction block are arranged in the accommodation space, and the heat pipe assembly is fixed A heat-conducting material is formed on the side of the heat pipe fixing cover contacting the accommodation space, and the surface of the heat-conducting block contacting the laser heat sink. The laser projection display device includes the laser light source mentioned in the above technical solution. The laser light source and the laser projection display device provided by the invention are used for laser display.

Description

technical field [0001] The present invention relates to the technical field of laser display, in particular to a laser light source and a laser projection display device. Background technique [0002] Laser projection display technology is a new type of display technology that uses a high-power semiconductor laser to convert electrical energy into laser light, and uses an optical path system to project the laser onto the screen under the control of the circuit system to form a laser image. Among them, the laser can convert 40% of the electrical energy into light energy and 60% of the electrical energy into heat energy; and as the temperature of the laser increases, the luminous efficiency of the laser shows a downward trend. Therefore, reducing the temperature of the laser is to ensure that the laser emits light. important means of efficiency. [0003] like Figure 1 to Figure 3 As shown, in the prior art, the laser is cooled by air-cooled heat dissipation. The specific pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/16
CPCG03B21/2033G03B21/16
Inventor 崔雷戴洁
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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