Projector

A technology of projectors and driving parts, applied in the field of projectors, can solve the problems of high noise and poor energy utilization efficiency, and achieve the effects of reducing noise, excellent energy efficiency, and suppressing rotation speed

Inactive Publication Date: 2007-08-29
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In this way, in the conventional projector 200, since the power supply unit 40 and the lamp driving unit 45 having different temperature characteristics are cooled by the driving voltage based on the higher temperature side, the noise is large, and the energy utilization efficiency is not excellent.

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0075] Outline Structure of a Projector

[0076] FIG. 1 is a schematic configuration diagram of a projector according to Embodiment 1 of the present invention. Here, a schematic configuration of the projector 100 will be described. In addition, for comparison, the same parts as those of the conventional projector 200 are described with the same reference numerals.

[0077] The projector 100 separates the light radiated from the light source unit 5 into three primary color components of red light, green light, and blue light, and passes through the liquid crystal light valves 23R, 23G, and 23B for each color light as a light modulation element according to the image signal. A so-called "liquid crystal 3-panel projector" that modulates each color light and magnifies and projects the modulated light of all colors (golden) after recombination on the screen SC through the projection lens 50 . In addition, the liquid crystal light valves 23R, 23G, and 23B are provided as liquid cr...

Embodiment approach 2

[0173] Different forms of distribution part

[0174] Fig. 5(a) and Fig. 6(a) are diagrams showing different configurations of distribution units at the time of low-brightness setting, and Fig. 5(b) and Fig. 6(b) are diagrams showing distribution units at the time of high-brightness setting. Diagrams of different shapes. Here, the different forms of the distribution unit of the projector 100 will be described centering on FIGS. 5(a), (b) and FIGS.

[0175] The R electromagnetic element 72 in Fig. 5(a), (b) is a distributing section different from the distributing section in Embodiment 1, and is a rotary electromagnetic element that adjusts the posture of the fan F4. In addition, in order to distinguish it from the rotary electromagnetic element 65 of the louver 62 of the first embodiment, it is called an R electromagnetic element 72 , and is driven by the distribution adjustment unit 61 .

[0176] The R electromagnetic element 72 is disposed substantially in the lower part of...

Embodiment approach 3

[0195] Different forms of distribution part

[0196] In addition, FIG. 10 is a side view of a different form of a distribution part. Here, different forms of the distribution unit of the projector 100 will be described with reference to FIG. 10 . In addition, FIG. 10 has seen the fan F4 from the suction surface F4i side.

[0197] The partition plate 92 in FIG. 10 is a distributing unit in a different form from the distributing unit in Embodiment 1 and the above-mentioned R electromagnetic element 72 and linear actuator 82, and is provided between the lamp driving unit 45, the power supply unit 40, and the fan F4. , that is, the air supply side F4j side. Moreover, the opening part 93 of substantially the same size as the blowing surface F4j of the fan F4 is formed in the substantially center part of the partition plate 92. As shown in FIG.

[0198] Next to the partition 92 , a linear actuator (not shown) is disposed, and the telescopic shaft of the linear actuator is attache...

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Abstract

Provided is a projector which can perfectly cool a plurality of heating parts without noise. The projector changes the direction of plural fan leaf of the persiennes as distributing part based on the drive electric power (brightness) of the light source, thus it distributes the cooling wind generated by fans to the cooling wind of the electric power and the cooling wind of the light drive part. Moreover, it may restrain the cooling total cooling wind quantity generated by fans and reduce the rotate speed of the fans owing to the balance optimization of the cooing wind of the electric power and the cooling wind of the light drive part, in which the temperature characteristics of the electric power and light drive part is consistent.

Description

technical field [0001] The present invention relates to a projector that enlarges and projects an image, and particularly relates to a technique for cooling heat-generating parts inside the projector. Background technique [0002] Projectors that use discharge lamps such as high-pressure mercury lamps and metal halide lamps as light sources, modulate the light generated by the light source according to image signals through light modulation elements, and amplify and project the modulated modulated light representing images are well known. Inside such a projector, there are many heat-generating parts. Specifically, there are a discharge lamp as a light source, a lamp drive unit that lights and maintains the discharge lamp, a light modulation element such as a transmissive liquid crystal light valve, and a power supply unit that supplies power to various parts of the projector. Wait. In addition, a projector including a plurality of fans as a cooling device has been proposed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16G03B21/00H05K7/20
Inventor 仓家伸介
Owner SEIKO EPSON CORP
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