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A color wheel assembly and projection device

A color wheel and component technology, applied in projection devices, instruments, optics, etc., can solve the problems of high working noise and low heat dissipation efficiency of the color wheel, achieve good noise reduction effect, shorten heat conduction path, increase heat dissipation surface and air convection effect

Active Publication Date: 2020-04-28
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a color wheel assembly and a projection device to solve the problems of low heat dissipation efficiency and high working noise of the existing color wheel

Method used

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  • A color wheel assembly and projection device
  • A color wheel assembly and projection device
  • A color wheel assembly and projection device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The color wheel assembly provided by this embodiment, such as figure 1 As shown, it includes: a color wheel 10 , a color wheel base plate 12 , and a driving device for driving the color wheel base plate 12 to rotate, wherein both the color wheel 10 and the color wheel base plate 12 are disc-shaped, and the driving device is a motor 11 . The outer edge of the color wheel substrate 12 is provided with a cooling fin 124 protruding from the side surface 123 of the color wheel substrate 12 . Wherein, the diameter of the outer circle of the color wheel substrate 12 matches (i.e. is equal to or similar to) the diameter of the outer edge of the fluorescent area 101 of the color wheel, and the fluorescent area 101 of the color wheel 10 is arranged on the outer edge of the color wheel 10 in a ring-shaped distribution. The fluorescent area 101 is the heat generating area of ​​the color wheel 10 . The heat sink 124 is arranged on the outer edge of the color wheel substrate 12, so ...

Embodiment 2

[0033] The color wheel assembly provided in this embodiment is improved on the basis of Embodiment 1, as image 3 As shown, in this embodiment, the heat sink 124 is arranged on the side surface 123 of the color wheel base plate 12 at an inclined angle, and the two ends of the heat sink 124 are flush with the two axially corresponding end faces of the color wheel base plate 12 respectively. The surface of the heat sink 124 forms a specific included angle with the axial direction of the color wheel base plate 12 , that is, the cooling fin 124 is inclined at a certain angle relative to the axial end surface of the color wheel base plate 12 . In other words, each cooling fin 124 starts from the outer edge of one axial end surface of the color wheel base plate 12 and extends along the side surface 123 of the color wheel base plate 12 to the other axial end surface of the color wheel base plate 12, so that the plurality of cooling fins 124 as a whole Similar to the multi-scroll fan ...

Embodiment 3

[0036] The color wheel assembly provided in this embodiment is an improvement to the previous embodiment, as Figure 4 As shown, the heat sink 124 in this embodiment has an airfoil structure, that is, the cross section of the heat sink 124 along the circumferential direction of the color wheel substrate 12 is roughly in the shape of a water droplet with one end thick and the other end thin, and the heat sink 124 as a whole is similar to the wing of an aircraft . The relatively thicker end of the heat sink 124 faces an axial end surface of the color wheel base plate 12 and is located at the windward end of the axial airflow generated by the heat sink 124 when the color wheel base plate 12 rotates; The relatively thinner end of the heat sink 124 is tapered toward the two axial ends of the color wheel base plate 12 and is located at the wake end of the axial airflow, that is, the thicker end of the airfoil structure is set At the windward end of the heat sink 124 , the relativel...

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Abstract

A color wheel assembly and a projection device, wherein the color wheel assembly includes: a color wheel, a color wheel base plate for fixing the color wheel, and a driving device for driving the color wheel base plate to rotate, and the outside of the color wheel base plate The edge is provided with cooling fins, and the cooling fins protrude from the side surface of the color wheel substrate. Both the color wheel substrate and the color wheel are circular, and the surface of the color wheel is provided with a ring-shaped fluorescent area. The diameter of the color wheel substrate matches the diameter of the outer edge of the fluorescent area of ​​the color wheel. The invention not only shortens the heat conduction path between the color wheel heating area and the heat sink, but also increases the heat exchange area between the color wheel and the air by arranging a plurality of cooling fins on the side surface of the color wheel substrate; A certain included angle enables the color wheel assembly to obtain stable axial air convection; the heat sink is set as an airfoil structure as a whole, which further increases the heat dissipation surface and air convection, and at the same time plays a good role in noise reduction.

Description

technical field [0001] The present application relates to a light source device, in particular to a color wheel assembly and a projection device. Background technique [0002] Some existing projection devices use laser light generated by a laser light source to excite fluorescent color wheels to generate color light sequences. However, with the increase of the light output power of the light source, the thermal power consumption of the color wheel will also increase. If the heat dissipation problem of the color wheel cannot be solved well, the efficiency of the excited light of the phosphor will be greatly reduced, and even lead to Damage to the color wheel itself. The color wheel mainly cools down by exchanging heat with the air at high speed, so improving the heat dissipation effect of the color wheel requires enhancing the convective heat transfer efficiency of the color wheel. [0003] In the prior art, in order to further improve the convective heat transfer efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/16
CPCG03B21/16G03B21/20
Inventor 谭大治
Owner APPOTRONICS CORP LTD
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