JP2006050167A - Projector having acoustic system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector having an acoustic system attaining both a high tone quality and a heat resistance at a low cost. <P>SOLUTION: A loudspeaker cabinet 20 with a built-in loudspeaker 50, a disk-player cabinet 30 with a built-in disk player 60 and a projector cabinet 40 with the built-in projector 70 are piled up successively from lower sections. One cabinet 10 as a whole is formed by mutually uniting the vertically superposed cabinets. The loudspeaker cabinet 20 and the disk-player cabinet 30 are formed in a structure mainly aiming at a vibration-suppression performance. The projector cabinet 40 is formed in the structure mainly aiming at the heat resistance. The top-face opening of the loudspeaker cabinet 20 is sealed hermetically by the bottom plate 31 of the disk-player cabinet 30 and a sealing member 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a projector with an acoustic system in which an acoustic system is added to a projector that projects an image.

Projectors are frequently used for the purpose of giving presentations and viewing video software at home. For presentation purposes, narrate with the voice or using a microphone. On the other hand, when viewing video software at home, a system that plays back audio recorded with video is essential.
For this reason, there are many cases in which a projector and an acoustic system are commercialized as a unit. For example, Patent Document 1 discloses a video projection apparatus in which a video projector, a visual controller, a microphone tuner, an MD player, a DVD player, a video deck, and an amplifier are stored in a storage cabinet and a full range speaker is attached.

In addition, the lamp part of the projector becomes very hot and generates a large amount of heat. Therefore, when designing each part, the temperature rise due to heat must be taken into consideration. Patent Document 2 discloses a rear projection type projector in consideration of the material so that the casing has flame retardancy.
JP 2001-1111917 A (3rd page, FIGS. 1-4) Japanese Patent Laid-Open No. 11-163543 (page 2-3, FIG. 1-5)

As a projector with an acoustic system, a projector having the configuration shown in FIG. 4 has been commercialized. A projector 100 with an acoustic system shown in FIG. 4 is a disc player 1 that reproduces discs such as speakers 120 and 121 and a DVD in order from the bottom in a cabinet 110.
30 and a projector 140 are arranged. The cabinet 110 incorporates an opening for taking in and out the disc tray of the disc player 130, an opening for exposing the projection lens of the projector 140, and cooling air for the projector 140, and the air heated by the projector 140 Ventilation holes (both not shown) are formed.

The cabinet 110 is formed by combining a lower cabinet 111 and an upper cabinet 112. The boundary between the lower cabinet 111 and the upper cabinet 112 is approximately as high as the disc player 130. Since the cabinet 110 also serves as a speaker box and needs to be sealed to improve sound quality, the fitting portion of the lower cabinet 111 and the upper cabinet 112 is an imprint fitting portion 113. A screw 114 is passed from the outside to the stamp fitting portion 113 and screw 1 is attached to a nut plate 115 fixed to the inner surface of the upper cabinet 112.
14 is screwed to join the lower cabinet 111 and the upper cabinet 112 together.

A plurality of support columns 116 rise from the inner bottom surface of the lower cabinet 111. A metal plate shelf 117 is fixed to the column 116 with screws. A disc player 130 is installed at the lower stage of the shelf 117, and a projector 140 is installed at the upper stage. Both the low-frequency speaker 120 and the mid-high frequency speaker 121 are fixed to speaker holes formed on the side surface of the lower cabinet 111.

As a material constituting the lower cabinet 111, a material that emphasizes acoustic characteristics and focuses on vibration suppression performance may be used. On the other hand, the upper cabinet 112 is connected to the projector 1.
In order to receive the heat generated by 40, it is necessary to have heat resistance. In addition, since the upper cabinet 112 is also a half of the speaker box, it must also have vibration suppression performance. It is not easy to search for a material that satisfies these two conditions, and even if it is found, the material cost is high.

Further, as long as the performance as a speaker box is pursued, the cabinet 110 needs to be highly sealed. However, since there are a plurality of essential openings such as an opening for taking in and out the disc tray, an opening for exposing the projection lens, and a vent for taking in and out the cooling air, it is said that increasing the sealing degree. But there are limits. Therefore, even if the speaker has a high performance, it is difficult to obtain a satisfactory sound quality.

SUMMARY An advantage of some aspects of the invention is that it provides a projector with an acoustic system that can achieve both high sound quality and heat resistance at low cost.

In order to achieve the above object, according to the first aspect of the present invention, in order from the bottom, a speaker cabinet with a built-in speaker, a disk player cabinet with a built-in disc player, and a projector cabinet with a built-in projector are stacked and stacked vertically. The cabinets are combined to form one cabinet as a whole, the speaker cabinet and the disc player cabinet have a structure that focuses on vibration suppression performance, and the projector cabinet has a structure that focuses on heat resistance. The cabinet has a shape with an open top surface, and the bottom plate of the disc player cabinet is fitted into the opening, and a sealing member is interposed in the fitting portion to increase the sealing degree. The disc player cabinet has an open top surface. Shape, before The projector cabinet is shaped to the lower face is open,
Provided is a projector with an acoustic system in which both the cabinets are joined at their openings and the projector is supported on a support column rising from a disc player cabinet.

According to this configuration, cabinets that require vibration suppression due to the nature of the elements to be stored, such as speaker cabinets and disk player cabinets, should be configured accordingly, and cabinets that require heat resistance, such as projector cabinets, should also be configured accordingly. Thus, a cabinet structure that can satisfy both high sound quality and heat resistance can be obtained. Since the material only needs to satisfy either vibration suppression performance or heat resistance, the material cost is not increased.

In addition, the speaker cabinet has a shape with an open top surface, and the bottom plate of the disc player cabinet is fitted into the opening, and a sealing member is interposed in the fitting portion to increase the sealing degree. The sound quality can be improved. In addition, since the speaker is incorporated into the speaker cabinet and the disc player cabinet is used to cover, the assembly is easy.

Furthermore, the disc player cabinet has a shape with an open top surface, and the projector cabinet has a shape with an open bottom surface. Both the cabinets are joined to each other, and the projector is supported on a column that rises from the disc player cabinet. Therefore, the bottom plate of the projector cabinet becomes unnecessary, and the material and manufacturing cost can be saved. Further, since the disk player and the projector are assembled to the disk player cabinet and then fixed by covering the projector cabinet, assembly is easy.

According to the invention of claim 2, in order from the bottom, a speaker cabinet with a built-in speaker, a disk player cabinet with a built-in disc player, and a projector cabinet with a built-in projector are stacked, and the cabinets stacked one above the other are joined together. In addition to forming a single cabinet, the speaker cabinet and the disc player cabinet have a structure that focuses on vibration suppression performance, and the projector cabinet provides a projector with an acoustic system that has a structure that focuses on heat resistance.

According to this configuration, cabinets that require vibration suppression due to the nature of the elements to be stored, such as speaker cabinets and disk player cabinets, should be configured accordingly, and cabinets that require heat resistance, such as projector cabinets, should also be configured accordingly. Thus, a cabinet structure that can satisfy both high sound quality and heat resistance can be obtained. Since the material only needs to satisfy either vibration suppression performance or heat resistance, the material cost is not increased.

According to a third aspect of the present invention, in the projector with an acoustic system according to the second aspect, the speaker cabinet has a shape with an open top surface, and a bottom plate of the disc player cabinet is fitted into the opening, and the fitting portion is hermetically sealed. A sealing member for increasing the degree is interposed.

According to this structure, the sealing degree of a speaker cabinet can be improved and sound quality can be improved. Further, since it is sufficient to incorporate a speaker into the speaker cabinet and then cover the disc player cabinet, assembly is easy.

According to a fourth aspect of the present invention, in the projector with an acoustic system according to the second or third aspect, the disc player cabinet has a shape with an open top surface, and the projector cabinet has a shape with a bottom surface open. At the same time, the projector is supported on a column that rises from the disc player cabinet.

According to this configuration, the bottom plate of the projector cabinet becomes unnecessary, and the material and manufacturing cost can be reduced. Further, since the disk player and the projector are assembled to the disk player cabinet and then fixed by covering the projector cabinet, assembly is easy.

As described above, according to the present invention, the cabinet portion that requires vibration suppression is a structure that focuses on vibration suppression performance, and the cabinet portion that requires heat resistance is a structure that focuses on heat resistance, Satisfactory performance is obtained in both sound quality and heat resistance. The material only needs to satisfy one of vibration suppression performance and heat resistance, and does not increase the material cost. The speaker cabinet has a shape with an open top surface, and the bottom plate of the disc player cabinet is fitted into the opening, and a sealing member is interposed in the fitting portion to improve the sealing, so that the sound quality is improved. This speaker cabinet does not need to be provided with an opening for inserting / removing the disk tray, an opening for exposing the projection lens, and a vent hole for taking in / out the cooling air. be able to. Furthermore, the disk player cabinet has a shape with an open top surface, and the projector cabinet has a shape with a bottom surface open. Since the projector cabinet does not have a bottom plate, material and manufacturing costs can be reduced. Further, the disk player and the projector are assembled to the disk player cabinet and then fixed by covering the projector cabinet.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 is an external perspective view of the projector, FIG. 2 is a vertical sectional view of the projector, and FIG. 3 is a partially enlarged sectional view.

The projector 1 has a rectangular parallelepiped cabinet 10. The cabinet 10 is configured as a single cabinet as a whole by stacking three cabinets and joining the cabinets stacked one above the other. The three cabinets are, in order from the bottom, a speaker cabinet 20 incorporating a speaker 50, a disc player cabinet 30 incorporating a disc player 60, and a projector cabinet 4 incorporating a projector 70.
0. The speaker cabinet 20 and the disc player cabinet 30 are formed of a material having high vibration suppression performance, generally a material having a large specific gravity. As a material that satisfies this requirement, for example, polypropylene can be used. The projector cabinet 40 is made of a material having high heat resistance. As a material that satisfies this requirement, for example, polycarbonate can be used.

The cabinet 10 is rectangular when viewed from above, and the projection lens 71 of the projector 70 is exposed from one of the two sides in the longitudinal direction. The disc tray 61 of the disc player 60 enters and exits from the other of the two sides in the longitudinal direction. The side where the disc tray 61 comes in and out is
On the side where the user is present, the operation panel of the projector 1 with the sound system is provided on the side surface on this side.

Two speakers 50 are fixed to the speaker cabinet 20 so as to be back-to-back with each other on the inner side of the side surface orthogonal to the side surface in the longitudinal direction. Corresponding to the mounting position of the speaker 50, a speaker hole 21 is formed on the side surface of the speaker cabinet 20. The speaker hole 21 is covered with a grid-like or net-like grill 22. Speaker cabinet 20
A leg portion 23 is formed on the lower surface of.

The speaker cabinet 20 has an open top surface, and the bottom plate 31 of the disc player cabinet 30 is fitted into the opening. The speaker cabinet 20 and the disc player cabinet 30 are fitted so that the former is on the outside and the latter is on the inside, thereby forming the stamp fitting portion 11. As shown in FIG. 3, the seal member 12 made of rubber or the like is used as the seal fitting portion 1.
1 to enhance the sealing performance of the speaker cabinet 20. Speaker cabinet 2
0 and the disc player cabinet 30 are the bottom plate 31 of the disc player cabinet 30.
Are coupled by screws 13 penetrating through the.

The disc player cabinet 30 has a shape with an open top surface, and the projector cabinet 40 has a shape with a bottom surface open, and the openings are joined together. Again, stamping fitting is used as a joining method. In the seal fitting portion 14, the disc player cabinet 30 is on the inside and the projector cabinet 40 is on the outside. A screw 15 is passed from the outside through the stamp fitting portion 14, and the screw 15 is screwed into a nut plate 16 fixed to the inner surface of the projector cabinet 40.
Join 0. The disc player cabinet 30 and the projector cabinet 40 do not constitute a speaker box, and the sealing performance between the speaker cabinet 20 and the disc player cabinet 30 is not required. Therefore, no seal member is disposed in the stamp fitting portion 14.

A disc player 60 is installed on the inner bottom surface of the disc player cabinet 30.
A plurality of support columns 32 rise from the inner bottom surface of the disc player cabinet 30 so as to surround the disc player 60. A sheet metal shelf 33 is fixed to the column 32 with screws, and a projector 70 is installed thereon.

On the side surface and the upper surface of the projector cabinet 40, air vents for taking in the cooling air for the projector 70 and exhausting the air heated by the projector 70 are formed. In addition, a cooling fan that performs forced ventilation through the vent is disposed in the projector cabinet 70, but none of them is shown in the figure.

The operation of the projector 1 is as follows. When reproducing the video software, a predetermined key operation is performed on the operation panel. Then, the disc tray 61 comes out, and after placing the disc thereon, it is returned to the disc player 60. When the disc player 60 takes in the disc, playback automatically starts.

Of the information carried by the disc, video information is projected forward through the projection lens 71 of the projector 70. Audio information is sent from the speaker 50. Since the two speakers 50 are installed facing in opposite directions, the stereophonic effect can be easily obtained.

The speaker cabinet 20 is tightly sealed with the disc player cabinet 30 and the sealing member 12, and since both the speaker cabinet 20 and the disc player cabinet 30 are formed of a material having high vibration suppression performance, high sound quality can be obtained. it can. Due to the vibration suppression performance of the disc player cabinet 30, the disc player 60
Vibration can be suppressed, and high-quality video and audio can be obtained.

When projection continues, the projector cabinet 40 is heated by the heat generated by the projector 70.
Is heated. Although the temperature rises, the projector cabinet 40 is not deformed or burned because it is made of a material having high heat resistance.

Although the embodiments of the present invention have been described above, various modifications can be made without departing from the spirit of the invention.

    The present invention can be used for all projectors integrated with an acoustic system.

External perspective view of projector according to the present invention Vertical section of projector Partial enlarged sectional view Vertical section of a conventional projector

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector 10 Cabinet 12 Seal member 20 Speaker cabinet 30 Disc player cabinet 31 Bottom plate 32 Post 33 Shelf 40 Projector cabinet 50 Speaker 60 Disc player 70 Projector

Claims (4)

In order from the bottom, a speaker cabinet with a built-in speaker, a disk player cabinet with a built-in disc player, and a projector cabinet with a built-in projector are stacked, and the cabinets stacked one above the other are joined together to form one cabinet. The speaker cabinet and the disc player cabinet have a structure that focuses on vibration suppression performance, and the projector cabinet has a structure that focuses on heat resistance,
The speaker cabinet has a shape with an open top surface, and a bottom plate of the disc player cabinet is fitted into the opening, and a sealing member is interposed in the fitting portion to increase the sealing degree. The projector cabinet has a shape with an open bottom surface, and the two cabinets are joined to each other at the openings, and the projector is supported on a column that rises from the disc player cabinet. Projector with sound system. In order from the bottom, a speaker cabinet with built-in speakers, a disk player cabinet with built-in disk player, and a projector cabinet with built-in projector are stacked, and the cabinets stacked one above the other are joined together to form one cabinet as a whole. The projector with an acoustic system is characterized in that the speaker cabinet and the disc player cabinet have a structure focusing on vibration suppression performance, and the projector cabinet has a structure focusing on heat resistance. The speaker cabinet has a shape in which an upper surface is opened, and a bottom plate of the disc player cabinet is fitted into the opening, and a sealing member for enhancing a sealing degree is interposed in the fitting portion. The projector with an acoustic system according to 2. The disc player cabinet has a shape with an open top surface and the projector cabinet has a shape with an open bottom surface. Both the cabinets are joined to each other, and the projector is supported on a column that rises from the disc player cabinet. The projector with an acoustic system according to claim 2 or 3.

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