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Projector

A technique for projectors and optical components, applied in the field of projectors

Inactive Publication Date: 2016-10-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, when a plurality of (for example, two) objects to be cooled are held in an airtight case, due to the heat absorber absorbing the heat of the cooling air circulating in the airtight case and the heat from the heat absorber Discharged to the outside of the airtight case, there is a problem of increasing the size of the device
In addition, there is a problem that it is difficult to individually manage a plurality of cooling objects at an appropriate temperature

Method used

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no. 1 Embodiment approach

[0039] Next, a first embodiment of the present invention will be described based on the drawings.

[0040] [Appearance structure of projector]

[0041] figure 1 It is a schematic perspective view showing the projector 1 of this embodiment.

[0042] The projector 1 of this embodiment is a projection display device that modulates light emitted from an illuminating device 31 described later to form an image corresponding to image information, and displays the image on a projected surface such as a screen. Make a magnified projection.

[0043] The projector 1 will be described in detail later, but the projector 1 has a first cooling object and a second cooling object, and the first and second cooling objects are respectively arranged in an airtight casing, and the projector 1 has cooling air (cooling Gas) circulates to cool the first and second cooling objects.

[0044] Such as figure 1 As shown, the projector 1 includes an exterior case 2 constituting the exterior.

[0045]...

no. 2 Embodiment approach

[0134] Next, a second embodiment of the present invention will be described.

[0135] Although the projector according to the present embodiment has the same configuration as the projector 1 described above, the object to be cooled by the cooling device 61 of the second circulation cooling device 6 is different. That is, this embodiment differs from the above-described first embodiment in that the phosphor wheel is used as the second cooling object instead of the polarization conversion element 325 . In addition, in the following description, the same reference numerals are assigned to the same or substantially the same parts as those already described, and explanations thereof will be omitted.

[0136] Figure 11 It is a schematic diagram which shows the circulation flow path of the 2nd cooling air in the cooling device 61 of this embodiment, and a cooling object.

[0137] The cooling device 61 constituting the second circulating cooling device 6A of the present embodiment ...

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Abstract

A projector includes a first cooling object and a second cooling object, a first circulatory cooling device having a first closed housing, and adapted to circulate a first cooling gas in the first closed housing to cool the first cooling object disposed in the first closed housing, and a second circulatory cooling device having a second closed housing, and adapted to circulate a second cooling gas in the second closed housing to cool the second cooling object disposed in the second closed housing, the first cooling object is an image forming section including a light modulation device adapted to modulate light entering the light modulation device to form an image, and the second cooling object is a first optical component included in an optical component making a contribution to the formation of the image by the light modulation device.

Description

technical field [0001] The present invention relates to projectors. Background technique [0002] Conventionally, there is known a projector that includes: a light source device; a light modulation device that modulates light emitted from the light source device to form an image corresponding to image information; and a projection optical device that is displayed on a screen or the like. The formed image is enlarged and projected on the projection surface. As such a projector, a configuration has been proposed that includes a cooling device that cools an optical device (including a liquid crystal panel as a light modulation device) and a polarization conversion element ( For example, refer to Patent Document 1). [0003] The projector described in this Patent Document 1 includes two multi-blade fans and a tube. The cooling air sent from the two multi-blade fans is divided by a pipe and supplied to each cooling target of a plurality of cooling targets (optical device and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16
CPCH04N9/3144G03B21/16
Inventor 石井伸幸
Owner SEIKO EPSON CORP
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