Projector
A projector and light source technology, applied in the field of projectors, can solve the problems of inability to obtain heat dissipation effect, increase fan air volume, and inability to obtain heat dissipation effect of liquid crystal panel, etc.
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Embodiment 1
[0204] figure 1 It is a schematic configuration diagram of a projector showing an embodiment of the present invention. The projector of the embodiment is a liquid crystal projector configured by providing a light source 2, an optical path changing member 3, a color separation optical system 4, an optical element group 5, a projection lens 10, and a cooling device 11 for the optical element group 5 inside a main body 1. p. The main body 1 is a flat box made of a material with excellent heat dissipation, for example, magnesium.
[0205] The light source 2 includes a lamp such as an ultra-high pressure mercury lamp, and a reflector for emitting light (divergent light) diverged from the lamp forward. The light source 2 of the embodiment is constituted by attaching a reflector to each of a plurality of (four) lamps, and is accommodated in an unillustrated lamp housing provided in the main body 1 .
[0206] The optical path changing member 3 forms the emitted light from the light...
Embodiment 2
[0257] In addition, in the above-mentioned first embodiment, the controller C executes the ventilation operation of opening the external air inlet 32 and the air outlet 33, thereby blocking a part of the passage 30 with each baffle plate 34, 35, and the optical element group 5 is separated in the substantially airtight space 30A formed by the baffles 34 and 35 in the channel 30, but is not limited to the first, second, fourth and fifth aspects of the present invention. When each baffle plate 34,35 opens the external air inlet 32 and the air outlet 33, for example, to Figure 4 A structure in which the optical element group 5 is not separated from the outside air inlet 32 and the air outlet 33 is also effective during the movement in the direction of the arrow indicated by the arrow, that is, during the ventilation operation.
[0258] In this case, when the ventilation operation is performed, although the outside air is also introduced into the channel 30 (space 30A) in w...
Embodiment 3
[0260] In addition, in the liquid crystal projectors of the above-mentioned embodiments, in order to absorb moisture in the channel 30, a desiccant 37 such as silica gel and a desiccant heating heater 38 for heating the desiccant 37 are provided in the channel 30, and The supply of cold air to the optical element group 5 will not be hindered. During the ventilation operation, the controller C energizes the desiccant heating heater 38 to release the moisture adsorbed by the desiccant 37 to the outside. However, it is not limited to ventilation. During operation, a dehumidifier capable of discharging moisture adsorbed by the desiccant to the outside of the channel 30 may be provided. Figure 5 It is a schematic configuration diagram showing a liquid crystal projector including a rotary dehumidifier 100 having a rotary drying rotor 101 as an example of the dehumidifier. In addition, in Figure 5 , marked with the figure 1 and Figure 4 Structures with the same symbols have the...
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Abstract
Description
Claims
Application Information
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