JP2004020949A - Liquid crystal projector apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal projector apparatus in which dust-proof countermeasures are taken for the purpose of preventing dust or the like from sticking to polarizing plates and liquid crystal panels, and heat dissipation countermeasures are also taken for the purpose of dissipating heat generated from the polarizing plates. <P>SOLUTION: A cooling layer 16 the surface of which is covered with a transparent vinyl sheet and the inside of which is hermetically sealed and filled with cooling water is disposed between the polarizing plates 11R, 11B, and 11G on the incoming side and liquid crystal panels 12R, 12B and 12G so as to surround the area, except a projecting section 14, in which a cross-dichroic prism 15, the liquid crystal panels 12R, 12B, and 12G and polarizing plates 13R, 13B, and 13G on the outgoing side are arranged. The top and bottom of the area surrounded by the cooling layer 16 are closed with conductive fiber filters, thereby hermetically closing the area in which the cross-dichroic prism 15, the liquid crystal panels 12R, 12B, and 12G and the polarizing plates 13R, 13B, and 13G on the outgoing side are arranged. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid crystal projector device, and more particularly, to a liquid crystal projector device that is provided with a heat dissipation measure and a dustproof measure.
[0002]
[Prior art]
A liquid crystal projector device separates light emitted from a light source into three primary colors of red, blue, and green, linearly polarizes the separated light with a polarizing plate corresponding to each of the three primary colors, and modulates the light with a liquid crystal panel. In some cases, a color image is projected on a screen through a projection lens by combining.
[0003]
FIG. 9 is a configuration diagram illustrating an internal configuration of the liquid crystal projector device. The liquid crystal projector device includes a light source 90, a dichroic mirror 91 that transmits only the primary red light of the light emitted from the light source 90, and a dichroic that transmits only the primary blue light of the light reflected by the dichroic mirror 91. A mirror 92, total reflection mirrors 93a, 93b, 93c, a projection unit 14 with a built-in projection lens, a cross dichroic prism 15 for synthesizing each primary color light, and condenser lenses 10R, 10B, 10G for condensing each primary color light And polarizers 11R, 11B, 11G and 13R, 13B, 13G for linearly polarizing each primary color light, and liquid crystal panels 12R, 12B, 12G for modulating each primary color light.
[0004]
The light source light emitted from the light source 90 enters the dichroic mirror 91. Only the red primary color light of the light source light passes through the dichroic mirror 91 and goes straight to enter the total reflection mirror 93a. Then, the red primary color light is reflected by the total reflection mirror 93a and enters the condenser lens 10R. The blue and green primary color lights are reflected by the dichroic mirror 91 and enter the dichroic mirror 92.
[0005]
Of the blue and green primary color lights incident on the dichroic mirror 92, only the blue primary color light passes through the dichroic mirror 92, travels straight to the direction of the total reflection mirror 93b, is further totally reflected by the total reflection mirror 93b, and is totally reflected. The light enters the reflecting mirror 93c. Then, the blue primary color light is reflected by the total reflection mirror 93c and enters the condenser lens 10B. The green primary color light is reflected by the dichroic mirror 92 and enters the condenser lens 10G.
[0006]
The red primary color light that has entered the condenser lens 10R is linearly polarized through the polarizing plate 11R. The red primary color light linearly polarized by the polarizing plate 11R is modulated by a video signal in the liquid crystal panel 12R, enters the polarizing plate 13R, and is linearly polarized again.
[0007]
Similarly, the blue primary color light incident on the condenser lens 10B is incident on the polarizing plate 13B via the polarizing plate 11B and the liquid crystal panel 12B. The green primary color light that has entered the condenser lens 10G enters the polarizing plate 13G via the polarizing plate 11G and the liquid crystal panel 12G.
[0008]
The red, blue, and green primary color lights that have passed through the polarizing plates 13R, 13B, and 13G are combined by the cross dichroic prism 15. The combined light generated by combining the three primary colors with the cross dichroic prism 15 is incident on the projection unit 14 and is projected on the screen through the projection unit 14.
[0009]
The polarizers 11R, 11B, 11G, 13R, 13B, and 13G absorb unnecessary component light when each primary color light is linearly polarized, so that unnecessary component light is converted into heat and generates heat. Therefore, in order to prevent the influence of heat on the liquid crystal panel, it is general to separate the polarizing plate and the liquid crystal panel when installing the polarizing plate and the liquid crystal panel. For this reason, a gap is created between the polarizing plate and the liquid crystal panel, and dust and dirt adhere to the surface of the polarizing plate and the liquid crystal panel, which causes deterioration in the quality of an image projected on a screen.
[0010]
Therefore, several techniques have been devised for preventing dust and dirt from adhering to the polarizing plate and the liquid crystal panel. For example, Japanese Patent Application Laid-Open No. H11-305684 describes a liquid crystal projector device in which dustproofing measures are taken by mounting a dustproof member between a polarizing plate and a liquid crystal panel of the liquid crystal projector device.
[0011]
FIG. 10 is a structural diagram showing a part of an internal structure of a liquid crystal projector device which has taken a conventional dustproof measure described in JP-A-11-305684. FIG. 11A is a perspective view showing a part of the internal structure of the liquid crystal projector shown in FIG. 10, and FIG. 11B is an exploded perspective view.
[0012]
As shown in FIG. 10 and FIG. 11, a conventional liquid crystal projector device provided with dustproof measures includes condenser lenses 10R, 10B, 10G, polarizing plates 11R, 11B, 11G, 13R, 13B, 13G, and liquid crystal panels 12R, 12B. , 12G, the projection unit 14 and the cross dichroic prism 15 are part of the constituent elements. As shown in FIGS. 10 and 11, in a conventional liquid crystal projector device which has been provided with a dust-proof measure, between the polarizing plate 11R and the liquid crystal panel 12R, between the polarizing plate 11B and the liquid crystal panel 12B, and between the polarizing plate 11G and the polarizing plate 11G. Dustproof members 100R, 100B, and 100G are mounted between the liquid crystal panel 12G and the liquid crystal panel 12G, respectively. For example, as shown in FIG. 11, the surface on which green primary color light is incident has a dustproof member 100G mounted between the polarizing plate 11G and the liquid crystal panel 12G, so that the polarizing plate 11G and the liquid crystal panel 12G have Prevents dust and dirt from adhering.
[0013]
[Problems to be solved by the invention]
The above-described liquid crystal projector device is effective in terms of dust prevention measures for preventing dust and dirt from adhering to optical elements such as a polarizing plate and a liquid crystal panel. However, since the space between the polarizing plate and the liquid crystal panel is sealed by the dustproof member, there is a problem that the heat generated by the polarizing plate cannot be sufficiently radiated.
[0014]
Therefore, the present invention provides a liquid crystal projector device that has taken a dustproof measure to prevent dust and dirt from adhering to a polarizing plate and a liquid crystal panel, and has taken a heat dissipation measure to radiate heat generated from the polarizing plate. The purpose is to do.
[0015]
[Means for Solving the Problems]
The liquid crystal projector device according to the present invention is a liquid crystal projector having a structure in which light emitted from a light source is incident on three liquid crystal panels via respective polarizing plates, and light from each liquid crystal panel is synthesized by a photosynthesis element and projected. In the device, a cooling unit covered with a transparent film and having a cooling liquid therein is disposed in close contact between each of the polarizing plates and each of the liquid crystal panels, and is used for light incidence and light emission in the photosynthesis element. The other side is covered with a breathable material.
[0016]
Further, the liquid crystal projector device may be one in which a projection unit is provided on a surface of the photosynthesis element that projects light, and the inside is surrounded by the cooling unit, the air-permeable material, and the projection unit.
[0017]
Further, the cooling unit may be integrally formed.
[0018]
Further, a cooling unit may be arranged corresponding to each liquid crystal panel, and a breathable material may be arranged between the cooling units.
[0019]
The breathable material may be a fiber filter that has been subjected to a conductive treatment.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
First, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram showing a part of an internal configuration of a liquid crystal projector device according to a first embodiment of the present invention. FIG. 2A is a perspective view of a part of the internal configuration of the liquid crystal projector device according to the first embodiment as viewed obliquely, and FIG. 2B is an exploded perspective view. As shown in FIGS. 1 and 2, the liquid crystal projector device according to the first embodiment includes condenser lenses 10R, 10B, and 10G, polarizing plates 11R, 11B, 11G, 13R, 13B, and 13G, and liquid crystal panels 12R and 12B. The 12G, the projection unit 14 and the cross dichroic prism 15 are part of the components. Furthermore, the liquid crystal projector device according to the first embodiment includes a cooling layer 16 whose surface is covered with a transparent vinyl sheet and whose inside is filled with cooling water and sealed, in addition to the above-described components.
[0021]
Here, in the cubic cross dichroic prism 15, two surfaces excluding the three surfaces on which each primary color light is incident and the surface on which the projection unit is arranged are defined as an upper surface and a lower surface. The other four surfaces are called side surfaces. Further, the polarizers 11R, 11B, 11G disposed on the incident side of the liquid crystal panels 12R, 12B, 12G are incident-side polarizers, and the polarizer 13R, disposed on the outgoing side of the liquid crystal panels 12R, 12B, 12G, 13B and 13G are referred to as emission-side polarizing plates. Further, in the liquid crystal panels 12R, 12B, and 12G, the surface facing the polarizing plate 11R, 11B, 11G on the incident side is the surface on the incident side, and the surface facing the polarizing plates 13R, 13B, 13G on the emitting side. Is referred to as an emission side surface.
[0022]
As shown in FIGS. 1 and 2, the cooling layer 16 is integrally formed, between the polarizing plate 11 </ b> R on the incident side and the liquid crystal panel 12 </ b> R on the surface on which the red primary color light enters, and on the surface on which the blue primary color light enters. The cross dichroic prism is disposed between the incident side polarizing plate 11B and the liquid crystal panel 12B, and between the incident side polarizing plate 11G and the liquid crystal panel 12G on the surface on which the green primary color light is incident, except for the projection unit 14. 15 and the liquid crystal panels 12R, 12B, 12G, and the polarizers 13R, 13B, 13G on the emission side are arranged so as to surround the area where they are arranged.
[0023]
Then, the incident side polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B, 12G are fixed on the cooling layer 16 with an adhesive.
[0024]
By arranging the cooling layer 16 in close contact with the polarizing plates 11R, 11B, 11G on each incident side, heat generated in the polarizing plates 11R, 11B, 11G on each incident side can be radiated. Further, by disposing the cooling layer 16 in close contact with the polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B, 12G on the respective incident sides, the polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B are arranged. , 12G can be prevented from adhering to the incident side surface.
[0025]
Note that the transparent film covering the surface of the cooling layer 16 may be a transparent glass instead of a vinyl sheet, or may be another transparent resin sheet. Further, the cooling liquid filled in the cooling layer 16 may be not the cooling water but another transparent cooling liquid. The incident-side polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B, 12G may be fixed to the cooling layer 16 with an adhesive or a double-sided adhesive sheet instead of an adhesive.
[0026]
FIG. 3 is a side view of a part of the internal structure of the liquid crystal projector device according to the first embodiment, as viewed from a side on which blue primary color light is incident. FIG. 4 is an exploded perspective view of a part of the internal structure of the liquid crystal projector device shown in FIG. Only by disposing the cooling layer 16 as shown in FIGS. 1 and 2, the heat radiation effect of the incident-side polarizing plates 11R, 11B, 11G, the incident-side polarizing plates 11R, 11B, 11G, and the liquid crystal panels 12R, 12B, Although a dust-proof effect can be expected between the incident side surface of 12G and the upper surface and the lower surface of the region surrounded by the cooling layer 16, heat radiation and emission of the polarizing plates 13R, 13B, and 13G on the emission side can be expected. It is not possible to perform dustproof between the polarizing plates 13R, 13B, 13G on the side and the exit side surfaces of the liquid crystal panels 12R, 12B, 12G and the cross dichroic prism 15.
[0027]
Therefore, as shown in FIGS. 3 and 4, the upper surface of the region surrounded by the cooling layer 16 is covered with the fiber filter 30, and the lower surface of the region covered with the cooling layer 16 is covered and sealed with the fiber filter 31. As the fiber filters 30 and 31 that cover the upper surface and the lower surface (corresponding to the surface of the cross dichroic prism 15 where light does not enter and exit) of the region covered with the cooling layer 16, those subjected to conductive treatment in advance are used. . Therefore, since the fiber filters 30 and 31 have been subjected to the conductive treatment, the fiber filters 30 and 31 can easily absorb heat generated in the polarizing plates 13R, 13B and 13G on the emission side. In general, since an air cooling fan is installed inside the liquid crystal projector device, the cross dichroic prism 15, the liquid crystal panels 12R, 12B, 12G, and the polarization on the emission side are used by using an air-permeable material called a fiber filter. Even when the regions where the plates 13R, 13B, and 13G are arranged have a closed structure, the heat generated in the polarizing plates 13R, 13B, and 13G on the emission side is radiated by the air from the air-cooling fan. Further, since the entry of dust and dirt into the interior is prevented by the fiber filter, the cross dichroic prism 15, the liquid crystal panels 12R, 12B, and 12G and the exit-side polarizing plates 13R, 13B, and 13G are disposed in the area. The entry of dust and dirt is prevented. Further, since the cooling layer 16 and the fiber filters 30 and 31 are disposed in close contact with each other, the heat generated by the incident-side polarizing plates 11R, 11B and 11G absorbed by the cooling layer 16 is also reduced by the fiber from the cooling layer 16. Heat is radiated through the filters 30 and 31. The cooling layer 16 and the fiber filters 30, 31 are fixed with an adhesive.
[0028]
With such a configuration, it is possible to release the heat generated in the polarizing plates 13R, 13B, and 13G on the emission side to the outside. The cross dichroic prism 15 is formed by covering the cross dichroic prism 15, the liquid crystal panels 12R, 12B, 12G, and the polarizing plates 13R, 13B, 13G on the emission side with the cooling layer 16 and the fiber filters 30, 31, thereby forming a closed structure. It is possible to prevent dust, dirt, and the like from adhering to the light-exiting surfaces of the liquid crystal panels 12R, 12B, and 12G and the light-exiting-side polarizing plates 13R, 13B, and 13G.
[0029]
Here, together with the cooling layer 16, the fiber filters 30, 31 are used as air-permeable materials for sealing the regions where the cross dichroic prism 15, the liquid crystal panels 12R, 12B, 12G and the exit-side polarizing plates 13R, 13B, 13G are arranged. Although used, a mesh-like metal plate having air permeability may be used instead of the fiber filter.
Further, the cooling layer 16 and the fiber filters 30, 31 may be fixed with an adhesive or a double-sided adhesive sheet instead of an adhesive.
[0030]
Further, in the present embodiment, a cross dichroic prism is used as a light combining element for combining three primary color lights, but a dichroic prism or the like for three spectral components may be used.
Further, in the present embodiment, the cooling layer 16 is used as the cooling unit, but the cooling unit may have another shape.
[0031]
Embodiment 2 FIG.
Next, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 5 is a configuration diagram showing an internal configuration of the liquid crystal projector device according to the second embodiment of the present invention. FIG. 6A is a perspective view of a part of the internal configuration of the liquid crystal projector device according to the second embodiment viewed from an oblique direction, and FIG. 6B is an exploded perspective view. As shown in FIGS. 5 and 6, similarly to the liquid crystal projector device according to the first embodiment, the liquid crystal projector device according to the second embodiment includes condenser lenses 10R, 10B, and 10G and polarizing plates 11R, 11B, 11G, 13R, 13B, 13G, the liquid crystal panels 12R, 12B, 12G, the projection unit 14, and the cross dichroic prism 15 are part of the components. Further, the liquid crystal projector device according to the second embodiment includes cooling layers 50R, 50B, 50G and fiber filters 51a, 51b, 52a, 52b.
[0032]
The cooling layers 50R, 50B, and 50G are covered with a transparent vinyl sheet, and the cooling layers 50R, 50B, and 50G are filled with cooling water. The cooling layer 50R is disposed between the incident-side polarizing plate 11R and the liquid crystal panel 12R where the red primary color light is incident, in close contact with the incident-side polarizing plate 11R and the liquid crystal panel 12R. Similarly, a cooling layer 50B is disposed between the liquid crystal panel 12B and the incident-side polarizing plate 11B on which the blue primary color light is incident, and the incident-side polarizing plate 11G and the liquid crystal panel 12G on which the green primary color light is incident. Between them, the cooling layer 50G is arranged.
[0033]
The incident-side polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B, 12G are fixed to the cooling layers 50R, 50B, 50G, respectively, with an adhesive. For example, as shown in FIG. 6, on the surface on which green primary color light is incident, the polarizing plate 11G and the liquid crystal panel 12G on the incident side are fixed to the cooling layer 50G with an adhesive.
[0034]
By arranging the cooling layers 50R, 50B, 50G in close contact with the respective incident-side polarizing plates 11R, 11B, 11G, heat generated by the respective incident-side polarizing plates 11R, 11B, 11G is radiated. . Further, by disposing the cooling layers 50R, 50B, 50G in close contact with the respective polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B, 12G on the incident side, the respective polarizing plates 11R, 11B, 11G and the respective liquid crystals are arranged. It is possible to prevent dust and the like from adhering to the incident side surfaces of the panels 12R, 12B, and 12G.
[0035]
Here, the transparent film covering the surfaces of the cooling layers 50R, 50B, 50G is not a transparent vinyl sheet, but may be transparent glass or another transparent resin sheet. Further, the cooling liquid filled in the cooling layers 50R, 50B, 50G is not limited to the cooling water, but may be filled with another transparent cooling liquid. The incident-side polarizing plates 11R, 11B, 11G and the liquid crystal panels 12R, 12B, 12G may be fixed to the cooling layers 50R, 50B, 50G with an adhesive or a double-sided adhesive sheet instead of an adhesive.
[0036]
When the cooling layers 50R, 50B, and 50G are simply mounted, the heat radiation effect of the incident-side polarizing plates 11R, 11B, and 11G, and the incident-side surfaces of the incident-side polarizing plates 11R, 11B, and 11G and the liquid crystal panels 12R, 12B, and 12G. Can be expected, the upper and lower surfaces of the region surrounded by the cooling layers 50R, 50B, and 50G, between the liquid crystal panels 12R and 12G, and between the liquid crystal panels 12B and 12G. Since the gap, the space between the liquid crystal panel 12R and the projection unit 14, and the space between the cooling layer 50R and the projection unit 14 are vacant, the radiation of the emission-side polarizing plates 13R, 13B, and 13G and the emission-side polarization plate It is not possible to provide dust protection between the cross dichroic prism 15 and the exit side surfaces of the liquid crystal panels 13R, 13B, 13G and the liquid crystal panels 12R, 12B, 12G.
[0037]
Therefore, as shown in FIGS. 5 and 6, a fiber filter 51a is mounted between the liquid crystal panel 12R and the liquid crystal panel 12G, and a fiber filter 51b is mounted between the liquid crystal panel 12B and the liquid crystal panel 12G. The fiber filter 52a is mounted between the projection 50 and the projection unit 14, and the fiber filter 52b is mounted between the cooling layer 50B and the projection unit 14. Here, the fiber filter 51a is fixed to the liquid crystal panel 12R and the liquid crystal panel 12G with an adhesive, and the fiber filter 51b is fixed to the liquid crystal panel 12B and the liquid crystal panel 12G with an adhesive. The fiber filter 52a is fixed to the liquid crystal panel 12R and the projection unit 14 with an adhesive, and the fiber filter 52b is fixed to the liquid crystal panel 12B and the projection unit 14 with an adhesive.
[0038]
By doing so, the side surfaces of the region where the liquid crystal panels 12R, 12B, 12G, the output-side polarizing plates 13R, 13B, 13G and the cross dichroic prism 15 are arranged, have the cooling layers 50R, 50B, 50G, the fiber filters 51a, 51b, 52a and 52b.
[0039]
FIG. 7 is a side view of a part of the internal structure of the liquid crystal projector device according to the second embodiment as viewed from a side on which blue primary color light is incident. FIG. 8 is an exploded perspective view of a part of the internal configuration of the liquid crystal projector device shown in FIG.
[0040]
As shown in FIGS. 7 and 8, the upper and lower surfaces of the cross dichroic prism are covered with fiber filters 70 and 71. That is, the upper surface is covered with the fiber filter 70, and the lower surface is covered with the fiber filter 71.
[0041]
As a result, the region where the cross dichroic prism 15, the liquid crystal panels 12R, 12B, and 12G and the exit-side polarizing plates 13R, 13B, and 13G are arranged has a closed structure. As the fiber filters 51a, 51b, 52a, 52b, 70, 71, those subjected to a conductive treatment in advance are used. The fiber filters 70, 71 are fixed to the cooling layers 50R, 50B, 50G and the fiber filters 51a, 51b, 52a, 52b with an adhesive.
[0042]
With such a configuration, the same effect as in the first embodiment can be obtained. That is, the heat generated in the polarizing plates 13R, 13B, and 13G on the emission side can be released to the outside by the fiber filters 51a, 51b, 52a, 52b, 70, and 71 that have been subjected to the conductive treatment. Further, the liquid crystal panels 12R, 12B, 12G, the polarizing plates 13R, 13B, 13G on the emission side and the cross dichroic prism 15 are combined with the cooling layers 50R, 50B, 50G and the fiber filters 51a, 51b, 52a, 52b, 70, 71. By using a cover-sealing structure, it is possible to prevent dust and dirt from adhering to the emission-side surfaces of the liquid crystal panels 12R, 12B, and 12G, the emission-side polarizing plates 13R, 13B, and 13G, and the cross dichroic prism 15. be able to.
[0043]
Further, as compared with the first embodiment, the liquid crystal projector device according to the second embodiment hermetically seals the liquid crystal panels 12R, 12B, 12G, the polarizing plates 13R, 13B, 13G, and the cross dichroic prism 15. Of the covered area, there are many areas covered by the fiber filter subjected to the conductive treatment. For this reason, compared with the liquid crystal projector device according to the first embodiment, it is possible to allow more air from the cooling fan built in the liquid crystal projector device to pass through, and the light is generated by the polarizing plates 13R, 13B, and 13G on the emission side. Heat can be released more efficiently.
[0044]
Here, a fiber filter 51a is used as a gas-permeable material that seals a region where the cross dichroic prism 15, the liquid crystal panels 12R, 12B, 12G, and the output-side polarizing plates 13R, 13B, 13G are arranged together with the cooling layers 50R, 50B, 50G. , 51b, 52a, 52b, 70, 71 are used, but instead of a fiber filter, a permeable mesh-like metal plate or the like may be used.
Further, the fiber filters 51a, 51b, 52a, 52b, 70, 71 may be fixed with an adhesive or a double-sided adhesive sheet instead of an adhesive. Further, the fiber filters 51a, 51b, 52a, 52b may be fixed to the cooling layers 50R, 50B, 50G with an adhesive or the like, instead of being fixed to the liquid crystal panels 12R, 12B, 12G.
[0045]
Further, in the present embodiment, a cross dichroic prism is used as a light combining element for combining three primary color lights, but a dichroic prism or the like for three spectral components may be used.
Further, in the present embodiment, cooling layers 50R, 50B, and 50G are used as the cooling unit, but other shapes may be used.
[0046]
In the present embodiment, a liquid crystal projector device having a photosynthetic element such as a cross dichroic prism as a component has been described. However, a cooling unit whose surface is covered with a transparent film and whose inside is filled with a cooling liquid is described. The liquid crystal panel is mounted in close contact with the polarizing plate and the liquid crystal panel to dissipate the heat generated by the polarizing plate and to prevent dust and dirt from adhering to the polarizing plate and the liquid crystal panel. The present invention can be applied to other liquid crystal projector devices as elements.
[0047]
【The invention's effect】
As described above, according to the present invention, the liquid crystal projector device is configured such that the cooling units covered with the transparent film and having the cooling liquid therein are disposed in close contact between the respective polarizing plates and the respective liquid crystal panels. With this configuration, heat generated on the incident side can be dissipated, and dust and dust are prevented from adhering to the incident side polarizing plate and the incident side surface of the liquid crystal panel.
In addition, since the surface of the photosynthesis element where light does not enter and exit is covered with a gas-permeable material, heat generated by the polarization plate on the emission side can be dissipated, and the light emission sides of the photosynthesis element and the liquid crystal panel can be radiated. This has the effect of preventing dust and dirt from adhering to the surface and the polarizing plate on the emission side.
[Brief description of the drawings]
FIG. 1 is a configuration diagram illustrating an example of a liquid crystal projector device according to the present invention.
FIG. 2 is a perspective view and an exploded perspective view showing a configuration of an example of a liquid crystal projector device according to the present invention.
FIG. 3 is a side view showing an example of the liquid crystal projector device according to the present invention.
FIG. 4 is a perspective view showing a side structure of an example of the liquid crystal projector device according to the present invention.
FIG. 5 is a configuration diagram showing another example of the liquid crystal projector device according to the present invention.
FIG. 6 is a perspective view and an exploded perspective view showing a configuration of another example of the liquid crystal projector device according to the present invention.
FIG. 7 is a side view showing another example of the liquid crystal projector device according to the present invention.
FIG. 8 is a perspective view showing a side structure of another example of the liquid crystal projector device according to the present invention.
FIG. 9 is a configuration diagram illustrating a configuration of a general liquid crystal projector device.
FIG. 10 is a configuration diagram showing a conventional liquid crystal projector device.
FIG. 11 is a perspective view and an exploded perspective view showing a configuration of a conventional liquid crystal projector device.
[Explanation of symbols]
10R, 10B, 10G Condenser lenses 11R, 11B, 11G Polarizers 12R, 12B, 12G Liquid crystal panels 13R, 13B, 13G Polarizers 14 Projection unit 15 Cross dichroic prism 16 Cooling layers 30, 31 Fiber filters 50R, 50B, 50G Cooling layers 51a, 51b Fiber filters 52a, 52b Fiber filters 70, 71 Fiber filters 90 Light sources 91, 92 Dichroic mirrors 93a, 93b, 93c Total reflection mirrors 100R, 100B, 100G Dustproof member 110 Fixing plate

Claims (5)

In a liquid crystal projector device having a structure in which light emitted from a light source is incident on three liquid crystal panels via respective polarizing plates, and light from each liquid crystal panel is synthesized by a photosynthesis element and projected.
A cooling unit covered with a transparent film and having a cooling liquid inside is disposed in close contact between each of the polarizing plates and each of the liquid crystal panels,
A liquid crystal projector device, wherein a surface of the photosynthetic element where light does not enter and exit is covered with a breathable material. A projection unit is provided on a surface of the photosynthesis element that projects light,
The liquid crystal projector device according to claim 1, wherein the inside is surrounded by a cooling unit, a breathable material, and a projection unit. 3. The liquid crystal projector according to claim 1, wherein the cooling unit is formed integrally. Cooling parts are arranged corresponding to each liquid crystal panel,
3. The liquid crystal projector device according to claim 1, wherein a permeable material is disposed between the cooling units. The liquid crystal projector according to any one of claims 1 to 4, wherein the air-permeable material is a fiber filter that has been subjected to a conductive treatment.

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