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Projector

A projector and projection technology, applied in the field of projectors, can solve the problems of low cooling efficiency, small heat generation, small temperature difference, etc., and achieve the effect of improving work efficiency

Inactive Publication Date: 2009-09-30
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when a light emitting diode (LED) is used as a light source device, the amount of heat generated is small compared to that of a cathode ray tube. On the other hand, it is necessary to keep the temperature of the light source device itself lower. In terms of natural air cooling inside the case where the temperature becomes high, there is a problem that the temperature difference between the temperature of the circulating liquid and the temperature inside the case is small and the cooling efficiency is low.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 2

[0199] Figure 6 , is a schematic sectional view of a projector embodying the present invention. use Figure 6 Instead, Embodiment 2 will be described.

[0200] exist Figure 6 In the figure, all the members 10 , 20 , 30 constituting the optical system and the members 13 , 14 , 15 , 16 , 50 constituting the flow path are assembled in the first case member 70A. Specifically, in the first case member 70A, the light source device 10 , the optical configuration part 20 , and the projection part 30 constituting the optical system are provided, the heat dissipation flow path 50 constituting the flow path is provided, and the connecting flow path connected to the light source device 10 is provided. 13, 16 and flow path relay parts 14, 15.

[0201] Assembling is to fix the light source device 10 connected to the connecting flow paths 13 and 16 and the flow path relay parts 14 and 15 to the first case member 70A fixed to the heat dissipation flow path 50 . Here, one end portion of...

Embodiment approach 3

[0207] Figure 7 , is a schematic sectional view of a projector embodying the present invention. use Figure 7 Instead, Embodiment 3 will be described.

[0208] exist Figure 7 Among them, in the first case member 70A, the heat dissipation flow path 50 constituting the flow path, the connection flow paths 13, 16 connected to the light source device 10, and the flow path relay parts 14, 15 are provided to form the light source device of the optical system. 10 and an optical component 20. Furthermore, the projection unit 30 constituting the optical system is provided in the second housing member 70B. Here, since all the members 13 , 14 , 15 , 16 , and 50 constituting the flow path are provided on the first case member 70A, flow path connection can be performed only in the assembled state of the first case member 70A.

[0209] In addition, two convex portions 28 for positioning are provided in the optical configuration portion 20 . In addition, two concave portions 34 for p...

Embodiment approach 4

[0213] Figure 8 , is a cross-sectional view related to the configuration of the flow path for heat dissipation of the present invention. use Figure 8 Now, Embodiment 4 will be described.

[0214] exist Figure 8 Among them, on the outer surface side of the first housing member 70A, a piece of member 90 is fixed, and a drum bar portion 92 having a substantially semicircular section in cross section is formed on the member 90, and a drum bar portion 92 is formed between the drum bar portion 92 and the first housing member 70A. A space 94 having a substantially semicircular cross section is formed. A cooling fluid circulates in this space 94 .

[0215] The member 90 is made of a copper-based metal with high thermal conductivity, and the first case member 70A is formed of a high thermal conductivity and lightweight magnesium alloy. In addition, the material of the member 90 constituting the flow path 50 for heat dissipation is not limited to copper-based metals, and metals ...

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Abstract

The present invention provides a projector, which comprises: a light source device (10) for emitting light, an optical component (20) constituting an optical system for modulating or synthesizing the emitted light of the light source device (10), and projecting light from the light source device (10). The projection part (30) of the optical configuration part (20) emits light, the flow path (55) through which the cooling fluid for cooling the light source device (10) flows, and the casing (70) constituting the exterior. The flow path (55) has a connection flow path (13, 16) connected to the light source device (10), and a heat dissipation flow path (50) continuous with the connection flow path (13, 16). The flow path (50) for heat dissipation is provided in the casing (70). Accordingly, it is possible to provide a projector in which cooling efficiency is improved by natural air cooling without using a fan.

Description

technical field [0001] The present invention relates to a projector, and more particularly, to a projector in which a cooling fluid is circulated in order to cool a light source device. Background technique [0002] In recent years, the brightness and miniaturization of projectors have progressed, and the heat density inside the device has increased compared to before. For this reason, further improvement in cooling performance is particularly required for a cooling device that cools a light source device that is a heat generating source, or a light valve that receives light emitted from the light source device and generates heat. However, the same situation applies to a projector using a light emitting diode (LED) as a light emitting element as a light source device, and further improvement in cooling performance is required. [0003] A lighting device has been proposed that, in the case of a projector using a light emitting diode (LED) as a light emitting element, as a li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/16H04N5/74H04N9/31
CPCH04N9/3144H04N9/3197H04N9/3105H04N9/3141H04N9/3164G03B21/16
Inventor 濑户毅高城邦彦木下悟志
Owner SEIKO EPSON CORP