Projection Video Display Device
A technology for projection-type image and display devices, which is applied in projection devices, combination devices, transportation and packaging, etc., and can solve problems such as the inability to directly install projection-type image display devices, reduced air conditioning capacity, and insufficient cooling air volume.
Inactive Publication Date: 2011-12-14
SANYO ELECTRIC CO LTD
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Problems solved by technology
[0003] However, if the air filter installed in the air inlet is used for a long time, the holes will be clogged
In addition, when the air filter is clogged, the following problems arise: the ventilation resistance of the air suction port increases, the amount of cooling air taken into the optical system equipment is insufficient, and the cooling capacity of the optical system equipment such as the light source lamp and the liquid crystal panel decreases.
The reason is that the air filter in the air conditioner will also be clogged due to long-term use. Therefore, when the air filter is clogged, the following problems will occur: the ventilation resistance of the air suction port will increase, and the intake air volume will decrease. reduce air conditioning capacity
However, the air filter device of Patent Document 2 is a device that stores dust in a dust box with the dust intake opening facing upwards. Although it can be applied to devices with a fixed installation direction such as air conditioners, it cannot be directly applied to changes in the installation posture. Various projection display devices
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[0062] Hereinafter, a projection type video display device according to an embodiment of the present invention will be described with reference to the drawings. It should be noted, figure 1 The perspective view showing the appearance of the projection type image display device according to this embodiment in the upright projection state. In the following description, unless otherwise indicated, the up-down direction, the left-right direction, and the front-rear direction all refer to figure 1 in the direction of the arrow shown in the illustration.
[0063] The projection-type video display device according to this embodiment is a three-panel liquid crystal projection-type video display device, and includes figure 1 The box-shaped exterior case 1 shown in the external perspective view of . And, housed in this outer casing 1 figure 2 In the optical system 2 as shown, the projection lens 2A is disposed so as to protrude from the front surface 11 of the exterior case 1 . In ...
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The present invention provides a projection type image display device including an air filter device capable of exhibiting stable dust removal performance in response to various changes in mounting posture. The projection type image display device is configured so that the projection direction can be changed 360 degrees while keeping the optical axis of the light source lamp horizontal, and an air filter device (filter unit (3)) is provided at the air intake port. The air filter device has an air filter (first air filter (40)) and a cleaning unit for cleaning the air filter. The cleaning unit includes: a rotating brush that moves in a direction parallel to the optical axis of the light source lamp on the windward side surface of the air filter while rotating to scrape off dust adhering to the air filter; A dust box which collects the dust removed from the rotating brush. In addition, the dust box (65) is an elongated container arranged parallel to the rotation center axis of the rotating brush (64), and the dust inlet (65A) opens toward the rotating brush (64).
Description
technical field [0001] The present invention relates to a projection-type image display device, and more particularly, to a projection-type image display device including an air filter device for cleaning an air filter. Background technique [0002] Projection image display devices usually use cooling air to cool optical system equipment such as light source lamps and light valves. In addition, air outside the equipment is used as cooling air, and an air suction port for taking in air outside the equipment into the equipment is provided on one surface of the exterior case. However, if the air taken in as cooling air contains dust, the dust will adhere to the surface of optical system equipment such as a liquid crystal panel, thereby deteriorating the quality of an image. Therefore, an air filter for capturing dust in the air is usually provided at the air intake port, and the dust in the air is captured by the air filter. [0003] However, if the air filter installed in th...
Claims
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IPC IPC(8): G03B21/14G03B21/00B01D50/00
CPCB01D2279/45G03B21/14B01D46/10B01D46/0065G03B21/16B01D46/0009G03B21/145B01D46/681
Inventor 西畑阳介宫永明有冈庆治
Owner SANYO ELECTRIC CO LTD