JP3588869B2 - Projector device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a projector device that can maintain the ventilation of heat discharged from a chassis body and improve cooling efficiency even when stacked as a multi-stage multi-projector.
[0002]
[Prior art]
For example, when displaying a very large image in an outdoor or indoor plaza, a multi-stage type multi-projector device that combines a plurality of screens to obtain a large image is known.
FIG. 3 is a diagram showing an example of a multi-stage multi-projector device configured by stacking conventional projector devices.
In the multi-stage multi-projector, cabinets 20, 20, 20,... Each having a rectangular parallelepiped with screens 21, 21, 21,. , 20, 20,... Mounted on the front surface are combined (9 in the case of 3 × 3, or 16 in the case of 4 × 4, for example). Make up a large screen.
[0003]
The cabinet main bodies 22, 22, 22,... Of the cabinets 20, 20, 20,... Have a box-shaped structure in which a plate for blocking external light is attached to a frame (not shown) serving as a framework thereof. It has been. A cathode ray tube (Cathode Ray Tube... CRT) is built therein. By projecting images from the CRT onto the screens 21, 21, 21. 21... Are configured such that an image of one screen can be obtained.
[0004]
Also, by stacking the cabinets 20, 20, 20,... In multiple stages, heat generated from the chassis bodies 22, 22, 22,... Is trapped in the cabinets 20, 20, 20,. Has a bad influence on the performance of the cabinet 20, so that heat is radiated to the outside of the cabinets 20, 20, 20,.
[0005]
[Problems to be solved by the invention]
However, since the cabinets 20 are stacked up, down, left, and right, heat accumulated in each cabinet must be discharged to the rear side of the projector device by the cooling fan as shown by arrows, for example. Due to space issues, if the rear side is placed adjacent to the wall, cooling efficiency is not good due to ventilation problems, it is not possible to sufficiently discharge heat, and the original performance of the projector device is brought out. May not be possible.
In addition, since a large back space with good air permeability is required to increase the cooling efficiency, there is a problem that a larger installation space is required for the size of the projector device.
[0006]
[Means for Solving the Problems]
The present invention has been made in order to solve such a problem, and a frame constituting a frame forming a rectangular parallelepiped of a cabinet, a screen disposed in front of the frame, and a screen disposed behind the frame, A chassis body having light-blocking means for blocking light and having means for projecting an image on the screen, and a hopper coupled to a front surface of the chassis body and guiding projection light from the means for projecting the image to the screen The projector device includes an enclosure having a shape, and a ventilation hole formed on the front surface of the chassis main body outside the joint portion of the enclosure and discharging heat generated in the chassis main body from the front to the outside.
[0007]
According to the present invention, since the ventilation holes are formed in the front of the chassis main body, heat generated in the chassis main body can be discharged toward the front and the lateral direction of the cabinet, and the rear of the cabinet is formed on a wall or the like. Even when they are arranged adjacent to each other, sufficient heat exchange can be performed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the projector device of the present invention will be described.
FIG. 1 is an external perspective view of the projector device according to the present embodiment.
The frame of the cabinet 1 of the projector device is formed by a plurality of frames 2, and the upper and lower sides of each frame 2 are provided with engaging portions 2a, 2a, engaged portions 2b, 2b, fitting portions 2c, 2c, fitted parts 2d, 2d are formed. When a multistage projector device is configured by stacking a plurality of two or three cabinets 1 upward, an engaging portion 2a and an engaged portion 2b that is a concave portion, and a projecting fitting portion 2c and a hole are formed. The stacked state can be stabilized by combining the fitted parts 2d with open. In the case where the projector device is arranged, for example, at the uppermost stage, a top plate may be arranged on the top surface of the cabinet 1 later, as shown in FIG.
When the projector devices are arranged side by side in the horizontal direction, for example, the same positioning means as the above-described engaging portion 2b, fitting portion 2c, etc. may be provided on the side portion of the frame 2, or a dedicated jig or the like may be provided. Alternatively, the frames 2 may be fixed to each other.
[0009]
The chassis main body 3 has a built-in CRT or the like for projecting RGB light as an image, and is disposed behind the frame 2 in a state where the outer wall is covered by a cover that blocks external light. The enclosure 4 has a hopper shape and guides only the projection light of the CRT built in the chassis body 3 to the screen 7 and is fixed to the frame 2 as a part of the outer shape of the cabinet 1.
[0010]
The screen bracket 5 is fixed to the front of the frame 2 and is configured to hold the screen holder 6. The screen holder 6 holds the screen 7, and is configured to be moved forward by a slide mechanism (not shown) in front of the cabinet 1 at the time of, for example, replacing or cleaning the screen 7. The screen 7 is composed of, for example, a Fresnel lens, a lenticular lens, and the like, and is detachably attached to the screen holder 6. Then, an image is formed by the arrival of the RGB light projected from the CRT.
[0011]
The ventilation holes 8a, 8b, 8c, 8d are formed at the front, bottom, left, and right of the portion connected to the enclosure 4 in front of the chassis main body 3, and generate heat from the CRT or the like by a cooling fan arranged inside the chassis main body 3. It is formed so as to escape from the front of the cabinet 1 from 8b, 8c, 8d along the hopper shape of the enclosure 4. In addition, dustproof means such as a filter is provided in the ventilation holes 8a, 8b, 8c and 8d so that dust and the like do not enter the inside of the chassis body 3.
[0012]
As described above, in the projector device of the present invention, since the ventilation holes 8 (a, b, c, and d) for releasing heat generated in the chassis main body 3 are formed toward the front of the cabinet 1, the rear surface of the cabinet 1 is disposed. Even in the case where it is arranged adjacent to a wall or the like, sufficient heat exchange can be performed without impairing the air permeability, so that the cooling efficiency can be improved.
[0013]
2A is a top view of the cabinet 1, FIG. 2B is a side view of the cabinet 1, and FIG. 2C is a diagram showing the front of the cabinet 1 from the screen 7 side. The top view of FIG. 2A shows a state in which the top plate 9 is arranged. By forming ventilation holes 8a and 8c at the front left and right of the chassis body 3 as indicated by arrows in FIG. 2A, heat discharged by the cooling fan can be released to the left and right sides of the cabinet 1. Become like
In addition, as shown in FIG. 2B, by forming ventilation holes 8b and 8d in the upper and lower front portions of the chassis main body 3, heat discharged by the cooling fan can be released to the upper and lower portions of the cabinet 1. become.
[0014]
That is, according to the present invention, as shown by arrows 10a, 10b, 10c, and 10d in FIG. 2C, heat can be dissipated to the front, up, down, left, and right when viewed from the front of the cabinet 1. Further, since the ventilation holes 8a, 8b, 8c, 8d are formed at the base of the hopper-shaped enclosure 4, a chimney-like space is formed in the heat discharging direction, and the heat discharged by the cooling fan is It is possible to escape to the outside of the cabinet 1 along the inclination.
[0015]
In addition, for example, in the case of stacking five or more stages, in order to surely stack and fix the respective cabinets 1, it is also possible to arrange a reinforcing material or the like using the space portion of the frame 2, and to stably. A multi-stage projector can be configured.
[0016]
【The invention's effect】
As described above, the projector device of the present invention is configured so that heat generated in the chassis main body can be released to the outside of the cabinet from the ventilation hole formed in the front of the chassis main body, and Even in a space where the wall is adjacent to the rear of the cabinet, sufficient heat exchange can be performed.
Also, since the vent hole is formed at the base of the enclosure that is formed in a hopper shape toward the front, the heat discharged from this vent hole escapes to the front outside of the cabinet along the hopper shape of the enclosure. Therefore, the cooling efficiency can be improved, and the performance of the projector device can be prevented from lowering.
Further, there is an advantage that the number of cooling fans and the capacity are reduced because the cooling efficiency is improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a projector device according to an embodiment of the present invention.
FIG. 2 is a diagram showing the projector device of the present embodiment from a top surface, a side surface, and a front surface.
FIG. 3 is a diagram showing a state in which conventional projector devices are stacked in multiple stages.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cabinet 2 Frame 3 Chassis main body 4 Enclosure 8a, 8b, 8c, 8d Vent

Claims (3)

A frame that constitutes a framework that forms a rectangular parallelepiped of the cabinet,
A screen arranged in front of the frame,
A chassis body disposed behind the frame and provided with light blocking means for blocking external light, and having means for projecting an image on the screen ,
A hopper-shaped enclosure coupled to a front surface of the chassis main body and guiding projection light from the means for projecting the image to the screen ;
A vent formed on the front surface of the chassis body outside the coupling portion of the enclosure, and discharging heat generated in the chassis body to the outside from the front ;
A projector device characterized by comprising: 2. The projector according to claim 1, wherein the ventilation holes are formed on a front surface of the chassis main body at upper , lower, left and right portions near a coupling portion between the chassis main body and the enclosure. 3. 3. The projector device according to claim 1, wherein the cabinets are stacked in multiple stages so that a multi-image screen can be displayed.

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