JP2003017865A - Electronic device housing, and projector including the electronic device housing - Google Patents

Abstract

(57) [Summary] [Problem] An electronic device housing and a projector capable of reducing the number of screwed portions, reducing the load at the time of manufacturing work, suppressing the manufacturing cost, and improving recyclability. To provide. An outer case made of resin includes an upper case and a lower case which are engaged with each other, and a metal shield member is housed inside thereof. The shield member 80 includes an upper surface member 81 and a bottom surface member 82, and a driver board is disposed therein. The front part 214 of the upper case 21 is formed with a ridge 214X protruding inward, and this ridge 214X
By deforming the upper surface member 81 and the bottom surface member 82, they come into contact with each other, and electrical conduction is ensured.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a housing for electronic equipment,
Also, the present invention relates to a projector including the electronic device casing.

[0002]

BACKGROUND ART Conventionally, projectors have been widely used as presentations at conferences, academic conferences, exhibitions, and the like.
Such a projector is composed of a housing and a projector main body housed in the housing. In this projector main body, a light flux emitted from a light source is transmitted through various optical components in accordance with image information captured from the outside. It is modulated to form an optical image, and the optical image is enlarged and projected on a screen or the like. Therefore, the projector main body has a CPU (Central Pr) for fetching image information and performing arithmetic processing and the like.
a circuit board on which circuit components such as an image processing unit and an image processing unit are mounted.

Here, in such a projector body, in order to project an optical image according to image information, a CPU is used.
Since the processing capacity of the CPU, etc. has a great influence, it is required to speed up the CPU and the like. Therefore, if the processing capacity of the CPU or the like is increased, strong electromagnetic waves are generated from the oscillation circuits of these circuit components. Therefore, in general, the projector is provided with measures against EMI (electromagnetic interference). As a countermeasure against this EMI, a metal such as aluminum is vapor-deposited on the inside of a housing made of a resin for electronic equipment, and electrical conduction between the metal and the circuit board is secured. That is, the projector main body including the circuit board is housed while being surrounded by the electronic device housing in which the metal is vapor-deposited, in a state where electrical continuity with the metal is secured.

However, since such a housing for electronic equipment is formed as a composite material of resin and metal, it is difficult to separate the resin and the metal, and the metal portion used for the housing for electronic equipment is difficult. There is a problem that it is difficult to recycle the resin by taking out only the resin and melting the remaining resin portion.

Therefore, in the projector, a metal shield member is independently provided inside a resin-made electronic device housing so that the resin portion and the metal portion can be separated from each other. Here, the assembling work of the projector having such a configuration will be described. First, the shield member on the lower housing side is attached to the lower housing in the electronic equipment housing including the upper housing and the lower housing. Secure with screws. After that, the projector main body is installed on the shield member on the lower housing side, and the shield member on the lower housing side and the metal portion of the projector main body are fixed with screws or the like,
These electrical continuity is secured. Next, the shield member on the upper housing side is attached on the projector body, and the contact portions between the upper and lower shield members are fixed with screws or the like. Finally, the projector main body is covered with the upper housing, and the upper and lower housings are joined together to assemble the projector.

[0006]

However, in such an assembling procedure, the projector main body and the upper and lower shield members must be screwed and fixed in order to secure electrical continuity. However, there is a problem in that it leads to an increase in manufacturing cost of the projector. In addition, increasing the number of places where the screws are screwed not only complicates the manufacturing work but also increases the number of parts. It should be noted that such a problem is not limited to the case for the projector and is the same for the case for other electronic devices.

An object of the present invention is to reduce the number of screwing points, reduce the load during manufacturing work, reduce the manufacturing cost, and improve the recyclability. To provide.

[0008]

A housing for electronic equipment according to the present invention is a housing for electronic equipment in which a shield structure for shielding noise generated from circuit components constituting an electronic equipment main body housed therein is formed. A body, and at least two housing members that engage with each other are provided, and the inside of one housing member of the housing members covers the circuit component separately from the housing member. One shield member is independently provided, and the shield structure is configured by including another casing member of the casing members and the one shield member, and the one casing member includes Deformation means is provided for deforming the one shield member toward the other casing member to ensure electrical conduction between the one shield member and the other casing member. It is characterized by.

Since the one housing member, the other housing member, and the one shield member are separate bodies, the one housing member is made of resin and the other housing member and The one shield member can be made of metal such as aluminum. In such a case, in the present invention, the one housing member is provided with the deforming means, so that the one housing member is deformed by engaging the one housing member with the other housing member. Electrical continuity is secured between the other housing member and the one shield member. Therefore, it is possible to secure electrical conduction between the other casing member and the one shield member without performing screwing work as in the conventional case, and reduce the load during the manufacturing work of the electronic device casing, Manufacturing cost can be reduced. Also, in this way, one housing member,
Since the other housing member and the one shield member are separately provided, the electronic device housing can be easily disassembled into a resin member and a metal member when the electronic device housing is disassembled. The recyclability can be improved.

Here, it is preferable that the deforming means is configured as an engaging portion for engaging the two housing members.
With this configuration, the deforming means also serves as the engaging portion between the housing members, so that the inner surface shape of the housing member can be simplified as compared with the configuration in which the engaging portion and the deforming means are separate. Therefore, the housing member can be easily manufactured, and the manufacturing cost can be suppressed.

Further, another shield member that comes into contact with the one shield member is independently provided inside the other casing member, and the shield structure includes the one shield member and the other shield member. It is preferable that the shield member is provided. Here, as the electronic device casing having such a configuration, for example, one casing member is a resin upper case arranged on the upper side, and the other casing member is a lower side of the upper case. Is a metal lower case, one shield member is a metal upper surface member arranged on the inner side of the upper case, and the other shield member is arranged on the inner side of the lower case. It may be a bottom member made of metal. According to this structure, since the lower case is made of resin, the metal portion of the lower surface member is not exposed to the outside of the electronic device casing. Therefore, for example, even if an electronic device having a light source such as a projector is used for a long time and overheated, the surface of the housing is unlikely to be overheated.

Further, a boss is formed inside at least one of the casing members, and an insertion hole into which the boss is inserted is formed in the shield member arranged inside the casing member. A claw that engages with the boss is preferably formed around the insertion hole. In such a case, when the insertion hole of the shield member is inserted into the boss of the housing member, the claw formed around the insertion hole engages with the boss, and the shield member is provided inside the housing member. Is fixed. Accordingly, since it is not necessary to fix the casing member and the shield member with a screw or the like, the work of attaching the casing member and the shield member can be simplified and the number of members to be used can be reduced.

At least one of the shield members includes
It is preferable that a cut-and-raised piece that is cut and raised on the side of the electronic device body that is housed inside is formed, and that the metal member of the electronic device body is in contact with the cut-and-raised piece. Here, in the case where the cut-and-raised piece is formed only on the other shield member, for example, even if the electronic device body is slightly displaced on the side opposite to the other shield member, the cut-and-raised piece is cut on the electronic device body side. Since the metal parts of the electronic device body and the cut-and-raised pieces can be kept in contact with each other because they are raised, electrical conduction between the metal parts of the electronic device body and the shield member can be reliably ensured.

In the case where the cut-and-raised pieces are formed on the shield member as described above, one of the two shield members has an outer peripheral portion on the outer peripheral portion thereof.
It is preferable that the collar portion is formed and a notch groove into which the collar portion is inserted is formed on the outer peripheral portion of the other shield member. In such a case, by inserting the collar portion into the notch groove and engaging the collar portion and the notch groove, the two shield members are electrically connected via the cut-and-raised piece as described above. In addition, since electrical continuity is ensured also in each outer peripheral portion, electrical continuity between the two shield members can be ensured.

It is preferable that the circuit component has a noise generating source such as an oscillation circuit, and the shield structure is formed so as to cover at least the noise generating source.
In such a case, if the shield structure is formed so as to cover only the noise generation source, the noise radiated to the outside can be suppressed, and the amount of the material forming the shield member can be reduced, resulting in cost reduction. Can be suppressed.

A projector according to the present invention is characterized by being provided with the electronic equipment casing. According to the present invention as described above, it is possible to obtain the same operational effect as the operational effect of the electronic device housing, and it is possible to reliably drive the electronic device according to the specifications.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. [1. Main Configuration of Projector] FIG. 1 is an overall perspective view of a projector 1 according to the present embodiment as seen from above, and FIG.
Is an overall perspective view of the projector 1 as seen from below, FIG.
FIG. 5 is a perspective view showing the inside of the projector 1. Specifically, FIG. 3 is a diagram in which the upper case 21 of the projector 1 is removed from the state of FIG. 1, and FIG. 4 is a rear side in which the shield member 80, the driver board 90, and the upper light guide 472 are removed from the state of FIG. 5 and FIG. 5 are diagrams in which the optical unit 4 is removed from the state of FIG.

1 to 4, a projector 1 includes an outer case 2 as a housing for electronic equipment, a power supply unit 3 housed in the outer case 2, and a planar U-shape arranged in the outer case 2 as well. The optical unit 4 of FIG.

The outer case 2 is made of ABS resin and is composed of an upper case 21 as one casing member and a lower case 23 as another casing member. These cases 21 and 23 are fixed to each other with screws. The internal structure of the outer case 2 will be described later in detail, and the external structure of the outer case 2 will be described here.

The upper case 21 has an upper surface portion 211,
A side surface portion 212 and a back surface portion 213 provided around the periphery thereof.
And the front part 214. A lamp cover 24 is a fitting type and is detachably attached to the front side of the upper surface portion 211. Further, in the upper surface portion 211, a cutout portion 211A exposing the upper surface portion of the projection lens 46 is provided on the side of the lamp cover 24, and the projection lens 46 is provided.
The zoom and focus operations can be manually performed via the lever. An operation panel 25 is provided on the rear side of the cutout portion 211A.

The front part 214 has the upper case 21.
With a circular hole opening 212A continuous with the notch portion 211A,
The projection lens 46 is arranged corresponding to the round hole opening 212A. In this front part 214, the round hole opening 21
An exhaust port 212B located on the front side of the internal power supply unit 3 is provided on the side opposite to 2A.
B is provided with an exhaust louver 26 that exhausts cooling air in a direction away from the image projection area, that is, on the left side in FIG. 1, and also serves as a light shield (the exhaust louver 26 is actually the lower case 23). Is attached to).

The lower case 23 is composed of a bottom surface portion 231, and a side surface portion 232, a back surface portion 233, and a front surface portion 234 provided around the bottom surface portion 231. A position adjusting mechanism 27 that adjusts the inclination of the entire projector 1 to position the projected image is provided on the front side of the bottom portion 231. Further, another position adjusting mechanism 28 for adjusting the inclination of the projector 1 in the other direction is provided at one corner on the rear side of the bottom surface part 231 and the rear foot 231A is provided at the other corner.
Is provided. However, the position of the rear foot 231A cannot be adjusted. Further, the bottom surface portion 231 is provided with a cooling air intake port 231B. An attachment portion 232A for rotatably attaching the U-shaped handle 29 is provided on the one side surface portion 232.

On one side surface side of the exterior case 2 as described above, the upper case 21 and the lower case 23 are provided.
Each side surface 212, 232 is provided with a side foot 2A (FIG. 2) that serves as a foot when the projector 1 is set up with the handle 29 facing upward. Also, the outer case 2
On the back side of the upper case 21, an interface section 2B opened across the back section 213 of the upper case 21 and the back section 233 of the lower case 23 is provided. Inside the interface section 2B, the interface board fixing member 85 (see FIG.
1) is provided. Also, the interface unit 2B
A speaker hole 2C and an intake port 2D are provided on both left and right sides of the rear surface portion 213, 233. Of these, the intake port 2D is located on the rear side of the internal power supply unit 3.

As shown in FIG. 4, the power supply unit 3 is composed of a power supply 31 and a lamp drive circuit (ballast) 32 arranged on the side of the power supply 31. The power supply 31 supplies the power supplied through the power cable to the lamp drive circuit 3
2 or L-shaped driver board 90 (FIG. 3) and the like, and is provided with an inlet connector 33 (FIG. 2) into which the power cable is inserted. The lamp driving circuit 32 supplies electric power to the light source lamp 411 of the optical unit 4.
(FIG. 7).

As shown in FIGS. 4, 6 and 7, the optical unit 4 is a unit which optically processes the luminous flux emitted from the light source lamp 411 to form an optical image corresponding to image information, and is an integrator. An illumination optical system 41, a color separation optical system 42, a relay optical system 43, an electro-optical device 44, a cross dichroic prism 45 (FIG. 7) as a color combining optical system, and a projection lens 46 as a projection optical system are provided.

[2. Detailed Configuration of Optical System] In FIGS. 4 and 7, the integrator illumination optical system 41 includes three liquid crystal panels 441 (liquid crystal panels 441R, 441G, respectively for red, green, and blue colored lights) that constitute the electro-optical device 44. 44
(Shown as 1B) is an optical system for illuminating an image forming area of 1B) substantially uniformly, and includes a light source device 413, a first lens array 418, and a second lens array 414 including a UV filter.
, The polarization conversion element 415, and the first condenser lens 41.
6, the reflection mirror 424, and the second condenser lens 41.
9 and.

Of these, the light source device 413 is a light source lamp 411 as a radiation light source for emitting radial rays.
And a reflector 412 that reflects the radiated light emitted from the light source lamp 411. A halogen lamp, a metal halide lamp, or a high-pressure mercury lamp is often used as the light source lamp 411. A parabolic mirror is used as the reflector 412. In addition to a parabolic mirror, an ellipsoidal mirror may be used together with a collimating lens (concave lens).

The first lens array 418 has a structure in which small lenses having a substantially rectangular contour when viewed in the optical axis direction are arranged in a matrix. Each small lens splits the light flux emitted from the light source lamp 411 into a plurality of partial light fluxes. The contour shape of each small lens is the liquid crystal panel 44.
It is set so as to be substantially similar to the shape of the first image forming area. For example, if the aspect ratio (ratio of horizontal and vertical dimensions) of the image forming area of the liquid crystal panel 441 is 4: 3, the aspect ratio of each small lens is also set to 4: 3.

The second lens array 414 has substantially the same structure as the first lens array 418, and has a structure in which small lenses are arranged in a matrix. The second lens array 414, together with the first condenser lens 416 and the second condenser lens 419, has a function of forming an image of each small lens of the first lens array 418 on the liquid crystal panel 441.

The polarization conversion element 415 is arranged between the second lens array 414 and the first condenser lens 416 and is unitized with the second lens array 414. Such a polarization conversion element 415 has a second
The light from the lens array 414 is converted into one type of polarized light, which improves the utilization efficiency of light in the electro-optical device 44.

Specifically, the polarization conversion element 415 sets 1
The respective partial lights converted into the polarized light of the types are finally passed through the first condenser lens 416 and the second condenser lens 419, and finally the liquid crystal panels 441R, 4 of the electro-optical device 44.
It is almost superimposed on 41G and 441B. In the projector 1 (electro-optical device 44) of this embodiment using the liquid crystal panel 441 that modulates polarized light, since only one type of polarized light can be used, the light source lamp 411 that emits another type of randomly polarized light is used. Almost half of the light is unused. Therefore, by using the polarization conversion element 415,
All the light emitted from the light source lamp 411 is converted into one type of polarized light, and the light utilization efficiency in the electro-optical device 44 is improved.

The color separation optical system 42 includes two dichroic mirrors 421 and 422 and a reflection mirror 423. The dichroic mirrors 421 and 422 divide a plurality of partial light beams emitted from the integrator illumination optical system 41 into red and green. , And has a function of separating into three color lights of blue.

The relay optical system 43 includes an incident side lens 43.
1, relay lens 433, and reflection mirrors 432, 4
34, and has a function of guiding the color light and blue light separated by the color separation optical system 42 to the liquid crystal panel 441B.

At this time, in the dichroic mirror 421 of the color separation optical system 42, the blue light component and the green light component of the luminous flux emitted from the integrator illumination optical system 41 are transmitted and the red light component is reflected. The red light reflected by the dichroic mirror 421 is reflected by the reflection mirror 42.
The light is reflected at 3 and passes through the field lens 417 to reach the red liquid crystal panel 441R. This field lens 4
Reference numeral 17 converts each partial light flux emitted from the second lens array 414 into a light flux parallel to the central axis (chief ray) thereof. The same applies to the field lens 417 provided on the light incident side of the other liquid crystal panels 441G and 441B.

Of the blue light and the green light transmitted through the dichroic mirror 421, the green light is reflected by the dichroic mirror 422, passes through the field lens 417, and reaches the liquid crystal panel 441G for green. On the other hand, the blue light passes through the dichroic mirror 422, passes through the relay optical system 43, and further passes through the field lens 417 to reach the liquid crystal panel 441B for blue light. The reason why the relay optical system 43 is used for blue light is that the optical path length of blue light is longer than the optical path lengths of other color lights, so that reduction in light utilization efficiency due to light diffusion or the like is prevented. This is because. That is, the partial light flux that has entered the incident side lens 431 is directly transmitted to the field lens 417.

The electro-optical device 44 includes three liquid crystal panels 441R, 441G and 441B as light modulators, which use, for example, a polysilicon TFT as a switching element, and a color separation optical system 42. The respective color lights separated by are separated by these three liquid crystal panels 441.
R, 441G and 441B form an optical image by being modulated according to the image information.

The cross dichroic prism 45 has three
A color image is formed by synthesizing images modulated for each color light emitted from the liquid crystal panels 441R, 441G, and 441B. In the cross dichroic prism 45, a dielectric multilayer film that reflects red light and a dielectric multilayer film that reflects blue light are formed in a substantially X shape along the interfaces of the four rectangular prisms. Three color lights are combined by the dielectric multilayer film. Then, the color image combined by the cross dichroic prism 45 is
It is emitted from the projection lens 46 and enlarged and projected on the screen.

As shown in FIGS. 4 and 6, each of the optical systems 41 to 45 described above is housed in a synthetic resin light guide 47 as a housing for optical components. The light guide 47 includes the above-mentioned optical components 414 to 419, 4
Lower light guide 47 provided with respective groove portions into which 21 to 423 and 431 to 434 are slidably fitted from above
1 and a lid-shaped upper light guide 472 that closes the upper opening side of the lower light guide 471. A head portion 49 is formed on the light emitting side of the light guide 47. The projection lens 46 is provided on the front side of the head section 49.
Is fixed, and liquid crystal panels 441R, 441G, and
The cross dichroic prism 45 to which 441B is attached is fixed.

[3. Cooling Structure] In the projector 1 according to the present embodiment, a panel cooling system A that mainly cools the liquid crystal panels 441R, 441G, and 441B, a lamp cooling system B that mainly cools the light source lamp 411, and a power source 31 are mainly cooled. A power supply cooling system C is provided.

2, 4 and 5, the panel cooling system A uses a pair of sirocco fans 51 and 52 arranged on both sides of the projection lens 46. Sirocco fan 5
The cooling air sucked from the intake ports 231B on the lower surface by 1, 52 is liquid crystal panels 441R, 441G, 441B.
Is cooled from the lower side to the upper side, then the lower surface of the driver board 90 (FIG. 3) is cooled, while the lower surface of the driver board 90 (FIG. 3) is moved toward the axial exhaust fan 53 side in the front corner and is exhausted from the exhaust port 212B on the front side.

4 to 6, in the lamp cooling system B,
Sirocco fan 54 provided on the lower surface of the optical unit 4.
Is used. The cooling air in the projector 1 attracted by the sirocco fan 54 enters into the light guide 47 through an opening (not shown) provided in the upper light guide 472, and the space between the second lens array 414 and the polarization conversion element 415 which are unitized. After cooling them through the through holes, the exhaust side opening 471 of the lower light guide 471 is opened.
After being discharged from A, it is sucked by the sirocco fan 54 and discharged. The exhaled cooling air is supplied to the lower light guide 471.
From the intake side opening 471B into the light guide 47 again and into the light source device 413 to cool the light source lamp 411, and then exits from the light guide 47 and is exhausted from the exhaust port 212B by the axial exhaust fan 53. To be done.

In FIG. 4, in the power supply cooling system C, the power supply 3
The axial-flow intake fan 55 provided in the rear of 1 is used. The cooling air sucked from the rear side intake port 2D by the axial flow intake fan 55 cools the power supply 31 and the lamp drive circuit 32, and then is exhausted by the axial flow exhaust fan 53 like the other cooling systems A and B. The air is exhausted from the mouth 212B.

[4. Structure of the inner side of the outer case] Next,
The internal structure of the outer case 2 will be described with reference to FIGS. FIG. 8 shows the inner side of the upper case 21. As shown in FIG. 8, in the upper case 21, a ridge portion 214X protruding inward is formed in the vertical direction on the inner surface of the front surface portion 214. In addition, on the inner surface of the upper surface portion 211, a convex portion 211X having a rectangular cross section that protrudes toward the inside (downward) is formed. In addition, this convex part 211X makes the shield member 80 inside (downward).
Will be pushed to.

FIG. 9 shows the inner side of the lower case 23 to which the bottom member 82 which is a part of the shield member 80 is attached. As shown in FIG. 9, the lower case 2
A cylindrical boss 231X protruding inward (upward) is formed on the rear surface side of the inner surface of the bottom surface portion 231 of FIG. Although hidden in FIG. 9, the boss 23 is also provided on the right side of the inner surface of the bottom surface portion 231 of the lower case 23.
A boss having the same shape as 1X is formed.

Further, on the outer surface of the front portion 234 of the lower case 23, there is formed a groove portion 234X into which the protruding portion 214X is slidably fitted from above. Therefore, when the upper case 21 and the lower case 23 are attached, the tip of the protrusion 214X and the groove 234X engage with each other. Therefore, this portion serves as the engaging portion described in claim 2. Here, since the vertical dimension of the protruding portion 214X is larger than the vertical dimension of the groove 234X, the upper case 21 and the lower case 23 are attached. When
The upper portion of the protruding portion 214X is in a state of protruding toward the inner side.

The bottom surface portion 231 projects inward (upward) and has a screw hole at the upper end thereof in order to secure the connection with the bottom surface member 82 which is the lower portion of the shield member 80. A plurality of screw-fastened portions provided with the projections as a set are formed. In these screw fastening portions, two on the back side of the bottom surface portion 231 are screw fastening portions 231P for fixing the interface board fixing member 85 described later, and two on the left side are screw fastening portions for fixing the lamp drive circuit fixing member 84 described later. 231Q, two on the left side in the center are screwed portions 231R for fixing the power supply fixing member 86, and two on the right side in the center are central members 83 of the circuit board fixing member 83 described later.
2 is a screw fixing portion 231S for fixing.

[5. Shield Structure] Next, the structure of the shield member 80 will be described. The shield member 80 is
As shown in FIGS. 10 and 11, it is attached to the inner side of the outer case 2 and includes an upper surface member 81 as one shield member and a bottom surface member 82 as another shield member. These top surface member 81 and bottom surface member 82
Is formed by sheet metal working a punching metal plate having a plurality of holes formed in the metal plate.

Further, the shield member 80 includes a circuit board fixing member 83, a lamp driving circuit fixing member 84, an interface board fixing member 85, a power supply fixing member 86,
And a driver board fixing member 87. These fixing members 83 to 87 are provided between the top member 81 and the bottom member 82, respectively.

As shown in FIG. 12, the upper surface member 81 is formed in accordance with the shape of each of the parts 211 to 214 of the upper case 21, and has a punching hole 81A for internal cooling.
Is a member formed by a plurality of upper surface portions 811, and left and right side surface portions 81 formed vertically from the periphery of the upper surface portion 811.
2, a rear surface portion 813, and a front surface portion 814.

The light source device 41 is provided on the front side of the upper surface portion 811.
A rectangular opening 811A for exposing the upper surface portion of the light source device 413 when the 3 is replaced is formed. A right side surface portion 812R of the left and right side surface portions 812 is bent and formed into a side surface L shape, and a rib 812R1 protruding outward is formed at an end portion of the L shape. Further, a rib 812L1 protruding outward is also formed on the tip portion of the left side surface portion 812L similarly to the rib 812R1.

One screw hole is formed in the back surface portion 813, and this screw hole and the back surface portion 21 of the upper case 21 are formed.
The upper surface member 81 and the upper case 21 are securely fixed so as not to come off by screwing between the screw holes 3 and 3. Further, the back surface portion of the interface board fixing member 85 is also fixed at this portion. Since the upper surface member 81 is arranged on the bottom surface member 82, such screwing is not always necessary. However, since it is possible that these may come off to cause a malfunction in the device, the screw is preliminarily used. I have stopped.

As shown in FIG. 9, the bottom surface member 82 is formed in accordance with the shape of the bottom surface portion 231 of the lower case 23, etc., and the bottom surface portion 821 and the left and right side surfaces formed vertically from the periphery of the bottom surface portion 821. Part 822 (FIG. 10), back part 82
3 and a front portion 824.

In the bottom surface portion 821, the right side portion is cut out in accordance with the intake port 231B of the bottom surface portion 231, and the left side portion is cut and raised piece 821 that is cut and raised upward.
A and 821B are formed. Further, a substantially rectangular opening 821C for connecting the sirocco fan 54 (FIG. 5) to the inside is formed in the central portion.

Further, on the bottom surface portion 821, there are screwed portions 231P to 231P formed on the bottom surface portion 231 of the lower case 23.
Bottom ribs 821P to 821S cut and raised toward the inside are formed so as to cover the upper ends of the 231S. These bottom surface ribs 821P to 821S correspond to the convex portions formed on the bottom surface ribs 821P to 821S in order to determine the positions corresponding to the screw holes of the screw fixing portions 231P to 231S and the positions of the screw fixing portions 231P to 231S. A hole is formed at a position to be formed.

Here, as shown in FIG. 13, the cut and raised piece 8
A power supply fixing member 86 accommodating the power supply 31 is provided on 21A.
Is installed, and the bottom surface member 82 is provided via the cut and raised piece 821A.
The electrical connection between the power supply fixing member 86 and the power supply fixing member 86 is secured.
Further, a lamp drive circuit fixing member 84 accommodating the lamp drive circuit 32 is placed on the cut-and-raised piece 821B, and the bottom surface member 82 and the lamp drive circuit fixed member 84 are electrically connected via the cut-and-raised piece 821A. Continuity is secured.

Ribs 86R and 84Q projecting outward from the main body are formed in the lower portions of the power supply fixing member 86 and the lamp driving circuit fixing member 84, and these ribs 86R and 84Q are provided with screws. Stop 23
Two holes corresponding to the screw holes of 1R and 231Q and the protrusion are formed.

Here, the screw fastening portion 231Q and the bottom rib 8
21Q and the rib 84Q are screwed together, and similarly, when the screwed portion 231R, the bottom face rib 821R and the rib 86R are screwed together, the fastening force exerts on the bottom face member 82.
The cut-and-raised pieces 821A and 821B are urged to maintain the state of contacting the lower surfaces of the lamp drive circuit fixing member 84 and the power supply fixing member 86. This ensures electrical continuity. On the other hand, electrical connection is secured by screwing the ribs 86R and 84Q together. In summary, the power supply fixing member 86 and the lamp drive circuit fixing member 84,
With the bottom surface member 82, in addition to the biasing of the cut-and-raised pieces 821A and 821B, electrical conduction is secured by screwing the ribs 86R and 84Q together.

Returning to FIG. 9, the bottom portion 82 of the bottom member 82.
On the rear side of 1, the cylindrical boss 23 of the lower case 23
A circular insertion hole 825 for inserting 1X is formed, and a claw 825X extending toward the center of the insertion hole 825 is formed around the insertion hole 825.

The outer diameter of the boss 231X is the insertion hole 825.
Is formed to be slightly smaller than the inner diameter dimension of. The extension dimension of the claw 825X is larger than the difference between the inner diameter dimension of the insertion hole 825 and the outer diameter dimension of the boss 231X. Therefore, when the insertion hole 825 is inserted into the boss 231X, the claw 825X, which is a sheet metal, is deformed in the insertion direction, and the claw 825X is caught on the side surface of the boss 231X. As a result, the bottom member 82 is locked to the lower case 23.

In the claw 825X, the boss 231X has the insertion hole 82.
The thickness and the shape may be determined so that the boss 231X bends and is engaged with the boss 231X when it is inserted into the member 5, and the shape and the like are not particularly limited.

A boss similar to the boss 231X is also formed on the right side of the bottom portion 231 of the lower case 23,
On the other hand, the bottom surface member 82 also has insertion holes and claws corresponding to these bosses. Therefore, the bottom member 82 is locked to the lower case 23 also in this portion.

The rear part 823 is a lower case 23.
To cover the upper side of the step formed on the bottom part 231 of the
A rib 82 in which the tip of the bent portion is bent further outward
3A is formed, the interface board fixing member 85 is placed on the rib 823A (FIGS. 11 and 13), and the rib 823A comes into contact with the rib 851A bent inward at the bottom surface of the interface board fixing member 85. The electrical continuity between them is ensured via.

As shown in FIG. 10, the circuit board fixing member 83 is a metal member for supporting the driver board 90 on the inner side of the upper surface portion 811 of the upper surface member 81, and the right end portion 90R of the driver board 90 is fixed to the circuit board fixing member 83. Support and
The right member 8 arranged near the inner surface of the right side surface portion 822R
31 and a central member 832 that supports the central end portion 90C of the driver board 90 and is fixed to the right lateral side of the front surface portion 814 of the upper surface member 81.

The right member 831 is a member having a rib portion. The upper rib portion of the right member 831 and the upper surface member 8
The right end portion 90R of the driver board 90 is sandwiched between the upper surface portion 811 and the upper surface portion 811, and the right member 831 and the upper surface portion 811 are screwed while sandwiching the driver board 90, and the driver board 90 is shielded. It is fixed in the member 80. The right member 831 is formed with a rib protruding outward so as to abut against the bottom member 82.

The central member 832 is also a member having rib portions. The driver board 9 is provided between the upper rib portion of the central member 832 and the upper surface portion 811 of the upper surface member 81.
The center end 90C of 0 is sandwiched, and this driver board 9
The central member 832 and the upper surface portion 811 are screwed to each other with 0 sandwiched, and the driver board 90 is shielded by the shield member 8
It is fixed within 0. The left end portion 90L of the driver board 90 is arranged on the lamp drive circuit fixing member 84.

As shown in FIGS. 11 and 13, the interface board fixing member 85 is provided on the rear surface 2 of the lower case 23.
A main body 851 that is a member arranged on the inner side of 33 and fixes the interface board 91 on which various connectors are mounted, and a lower case 2 that extends from the main body 851.
A slit portion 85 located inside the corner portion on the left rear surface side of 3 and formed with a slit corresponding to the intake port 2D.
2 and.

Two ribs 851A protruding toward the inner side are formed in the lower portion of the main body 851, and these ribs 851A are screwed together with the bottom rib 821P and the screw fastening portion 231P. Here, a driver board substrate fixing member 87 is installed on the back side of the driver board 90, and the upper surface member 81 and the driver board 90 are screwed to the driver board substrate fixing member 87. Further, the interface fixing member 85 and the driver board substrate fixing member 87 are also screwed. As a result, the interface fixing member 85
Also, electrical continuity between the top surface member 81 and the bottom surface member 82 is secured via the driver board substrate fixing member 87.

The lamp driving circuit fixing member 84 is shown in FIG.
As shown in FIG. 13, the lamp driving circuit 32 is composed of a tubular body obtained by bending a metal plate, and the lamp driving circuit 32 is fixed between the upper end surface 841 and the lower end surface 842 thereof. The upper end surface 841 abuts on the rib 812L1 of the left side surface portion 812L of the upper surface member 81, and the lower end surface 842 is the cut-and-raised piece 821B of the bottom surface member 82.
Is in contact with. As a result, electrical continuity between the top surface member 81 and the bottom surface member 82 is secured via the lamp drive circuit fixing member 84.

As shown in FIG. 13, the power supply fixing member 86 is composed of a tubular body formed by bending a metal plate, and the power supply 31 is fixed between the upper end surface 861 and the lower end surface 862 of the tubular body. The upper end surface 861 is in contact with the upper surface member 81, and the lower end surface 862 is in contact with the cut and raised piece 821A of the bottom surface member 82. As a result, electrical continuity between the top surface member 81 and the bottom surface member 82 is secured via the power supply fixing member 86.

Thus, the lamp drive circuit fixing member 84
The power supply fixing member 86 is composed of a tubular body formed by bending a metal plate, and its tubular end is open. Therefore, the cooling air passes through the openings through these openings, so that the internal lamp drive circuit 32 and the power supply 3 are connected.
1st grade is designed to be cooled

[6. Projector Assembly Procedure] Next,
A procedure for assembling the projector 1 will be described with reference to FIG. 14 in addition to FIGS. Note that, here, only the portion related to the shield member 80 will be described, and description of the arrangement of members such as the optical unit 4 will be omitted.

First, the insertion hole 825 of the bottom member 82 is inserted into the boss 231X of the lower case 23, and the claws 825X around the insertion hole 825 and the side surface of the boss 231X are engaged with each other, so that the bottom member 82 lower case 23
Attach to.

Next, the lamp drive circuit fixing member 84 and the power supply fixing member 86 are connected to each other and placed on the cut and raised pieces 821A and 821B. And rib 86R
And the bottom rib 821R of the bottom member 82 are brought into contact with each other, and the rib 84Q and the bottom rib 821Q of the bottom member 82 are brought into contact with each other, so that the lamp drive circuit fixing member 84, the power supply fixing member 86, and the bottom member 82 are screwed. Stop. As a result, the lamp drive circuit fixing member 84 and the power supply fixing member 86 are fixed to the lower case 23.

Subsequently, as shown in FIG. 11, the interface board fixing member 85 is connected to the lamp driving circuit fixing member 8
4 is attached to the upper surface of the rear surface portion 823 of the bottom surface member 82 while being attached to the upper surface 4. At this time, the rib portion of the interface board fixing member 85 and the bottom surface rib 821P of the bottom surface member 82 are brought into contact with each other, and the interface board fixing member 85 and the bottom surface member 82 are screwed together. As a result, the interface board fixing member 85 is fixed to the lower case 23.

Then, as shown in FIG. 10, the right member 831 of the circuit board fixing member 83 and the right side surface portion 822R of the bottom surface member 82 are fixed by the rib portion. Further, the central member 832 of the circuit board fixing member 83 and the right lateral portion of the front surface portion 824 of the bottom surface member 82 are fixed.

In the above state, as shown in FIG. 14, the lamp drive circuit fixing member 84, the power supply fixing member 86,
The interface board fixing member 85 and the circuit board fixing member 83 (right member 831 and central member 832, FIG.
0)), the driver board 90 on which the driver board substrate fixing member 87 is installed is arranged.

Subsequently, the upper surface member 81 is arranged so as to cover the driver board 90. At this time, FIGS.
As shown in FIG. 7, in the top member 81 and the bottom member 82, the end portions of the front portions 814 and 824 are brought into contact with each other. Further, on the side surface portion 812 of the upper surface member 81, the rib 812R1 of the right side surface portion 812R and the rib portion of the right member 831 of the circuit board fixing member 83 are brought into contact with each other, and the left side surface portion 8
12L rib 812L1 and lamp drive circuit fixing member 84
The upper end surface 841 of the above. Further, the interface board fixing member 85 and the back surface portion 813 of the upper surface member 81 are connected via the driver board substrate fixing member 87.

As a result, the top member 81, the bottom member 82, the circuit board fixing member 83, which constitute the shield member 80,
Electrical connection between the lamp driving circuit fixing member 84, the interface board fixing member 85, the power supply fixing member 86, and the driver board fixing member 87 is ensured, and the shield member 80 and the driver board 90 (ground) are electrically connected. The electrical continuity is also secured. In particular, although the noise generation source including the oscillation circuit is provided on the upper surface of the driver board 90, the driver board 90 has the upper surface member 81.
The top surface is entirely covered by.

Finally, the upper case 21 is covered, and the upper case 21 and the lower case 23 are screwed to complete the projector 1.

When the upper case 21 and the lower case 23 are attached in this way, as shown in FIG.
The ridge portion 214X engages with the groove portion 234X of the lower case 23, deforms the front surface portions 814, 824 of the top surface member 81 and the bottom surface member 82 inward, and the contact of these causes the top surface member 81 and the bottom surface member to contact each other. Member 82
Electrical continuity between them is secured. Therefore, the ridge portion 214X
Has a function as an engaging portion between the upper case 21 and the lower case 23 and a function as a deforming means for deforming the upper surface member 81 and the bottom surface member 82 inward.

According to this embodiment as described above, the following effects can be obtained. (1) Since the top surface member 81 and the bottom surface member 82 are deformed inward by the protrusions 214X of the upper case 21 so that the top surface member 81 and the bottom surface member 82 come into contact with each other, the top surface member 81 does not have to be formed as in the conventional case. Even if the 81 and the bottom member 82 are not screwed together, electrical conduction between the top member 81 and the bottom member 82 can be ensured, the burden of the manufacturing work of the projector 1 can be reduced, and the manufacturing cost can be suppressed. it can.

(2) Further, the ridge portion 2 of the upper case 21
14X has a function as a deforming unit that deforms the top member 81 and the bottom member 82 to the inside, as described above,
It also has a function as an engaging portion for engaging the upper case 21 and the lower case 23. Therefore, as compared with the configuration in which the engaging portion and the deforming means are separate, the outer case 2
The inner surface shape can be simplified, and therefore, the outer case 2 can be easily manufactured, and the manufacturing cost can be suppressed.

(3) Since the upper case 21 and the lower case 23 made of ABS resin and the shield member 80 are separate bodies, if the projector 1 is disassembled,
Can be easily disassembled into S resin members and metal members,
The recyclability of the resin portion of the projector 1 can be improved.

(4) Exterior case 2 including lower case 23
Since the whole is made of ABS resin, the metal portion is not exposed to the outside of the projector 1. Therefore, the projector 1 is used for a long time and the internal optical unit 4
It is possible to provide a structure in which the surface of the outer case 2 is unlikely to be overheated even when the above is overheated.

(5) Boss 231X and claw 82 of insertion hole 825
By engaging with 5X, the lower case 23 and the bottom member 82
Since the and are attached, the lower case 23 and the bottom member 82
It is possible to minimize the number of screw-fastened portions, and therefore, the work of attaching the lower case 23 and the bottom member 82 can be simplified, and the number of members to be used can be reduced.

(6) The power supply fixing member 86 is attached to the bottom member 82.
And the cut and raised pieces 821A, 821B cut and raised to the lamp drive circuit fixing member 84 side (upward) are formed. In the cut and raised pieces 821A, 821B, the power supply fixing member 86, the lamp drive circuit fixing member 84, and the bottom member 82 Are in contact with each other. In this way, the cut and raised piece 821
Since A and 821B are cut and raised upward, the movement (positional deviation) of the power supply fixing member 86 and the lamp drive circuit fixing member 84 in the vertical direction can be restricted, and the power supply fixing member 86 and the lamp drive circuit fixing member can be regulated. 84 and cut and raised piece 82
The state where 1A and 821B are in contact can be maintained. Therefore, the power supply fixing member 86 and the lamp drive circuit fixing member 8
It is possible to reliably ensure electrical conduction between the No. 4 and the bottom member 82.

(7) The driver board 90 has a noise generating source such as an oscillation circuit. In this embodiment, the upper surface member 81 has a shape that covers the entire driver board 90 but does not cover a part of the light source device or the like, and the upper surface member 81 is formed of the minimum necessary amount of material. Therefore, the noise radiated from the driver board 90 to the outside can be suppressed, and the amount of the material forming the upper surface member 81 can be reduced, so that the cost can be suppressed.

(8) On the outer peripheral side of the shield member 80, the upper surface member 81, the bottom surface member 82, the lamp drive circuit fixing member 84, and the interface board fixing member 85 are in contact with each other to ensure electrical conduction. On the inner side, the circuit board fixing member 83, the power supply fixing member 86, and the driver board 90 are in contact with each other to ensure electrical conduction. In this way, electrical continuity is ensured on both the outer peripheral side and the inner side, so that electrical continuity of the shield member 80 can be ensured.

(9) The convex portion 211X of the upper surface portion 211 of the upper case 21 has the shield member 80 inside (downward).
Since it is pressed to, the electrical conduction in the vertical direction between the members 81 to 86 forming the shield member 80 can be further ensured.

The present invention is not limited to the above-described embodiment, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.
In the above embodiment, the upper surface member 81 and the bottom surface member 82 are joined by forming rib portions on both the upper surface member 81 and the bottom surface member 82 and abutting these rib portions on each other. However, the present invention is not limited to this, and the following configurations may be adopted. That is, as shown in FIG. 16, for example, the collar portion 81 is provided on the right side surface portion 812R of the upper surface member 81.
While forming X, the right side surface portion 822R of the bottom surface member 82 is formed with a cutout groove 82X into which the flange portion 81X is inserted. At this time, the right side surface portion 822R is formed so that the upper portion 82X1 and the lower portion 82X2 of the cutout groove 82X are displaced by the thickness dimension of the upper surface member 81. Therefore, by simply inserting the brim portion 81X into the notch groove 82X,
The top member 81 and the bottom member 82 can be easily joined. At this time, the upper portion 82X1 and the lower portion 8 of the cutout groove 82X
Since the 2X2 and the 2X2 are offset from each other, the flange portion 81X can be easily inserted into the notch groove 82X, and the right side surface portion 812R and the right side surface portion 822R can be flush with each other. It should be noted that such a configuration has the right side surface portion 812R of the top surface member 81 and the bottom surface member 8
Not only the engaging portion with the right side surface portion 822R of No. 2 but also other portions such as the front surface portion and the rear surface portion can be engaged.

Further, in the above embodiment, the lower case 23 and the bottom member 82 have the boss 231X and the claw 825X.
It was fixed by engagement with, but the same configuration as this,
It can also be adopted for engagement between the upper case 21 and the upper surface member 81.

Further, in the above embodiment, the bottom member 8
Although the cut-and-raised pieces 821A and 821B are formed in No. 2, they may not be formed as long as electric conduction is surely secured. On the contrary, the cut-and-raised pieces 821A, 82
You may form the cut-and-raised piece similar to 1B.

In the above embodiment, the lower case 23
Although the bottom member 82 and the bottom member 82 are formed as separate members, the present invention is not limited to this and may be integrally formed of metal. However, in the above-described embodiment, the metal portion is not exposed to the outside of the projector 1, so that there is an advantage that the surface of the outer case 2 is less likely to be overheated.

Further, in the above embodiment, the insertion hole 82
Although the claws 825X are formed around the periphery of 5 to engage with the boss 231X, conversely, the claws may be formed on the side surfaces of the boss 231X to engage with the periphery of the insertion hole 825. Further, the shape and quantity of the boss 231X are not particularly limited. In short, the outer case 2 without using screws
If the shield member 80 can be fixed to the above, the shape, structure, quantity, etc. thereof are not particularly limited.

In the above-described embodiment, the upper surface member 81 has a shape that entirely covers only the upper surface portion of the driver board 90. However, the shape is not limited to this. For example, the upper surface member 81 may be formed so as to cover only the noise source. Alternatively, it may be formed so as to cover a part of the light source device. In short, the shape of the shield member 80 including the upper surface member 81 is not particularly limited as long as it is formed so as to cover at least the noise generation source.

Further, although the outer case 2 is made of ABS resin in the above embodiment, the outer case 2 is not limited to this and may be made of other resin. Further, although the shield member 80 is made of metal, various metals such as aluminum, stainless steel, and magnesium can be adopted as this metal.

Although the outer case 2 is adopted in the projector 1 in the above-described embodiment, the invention is not limited to this, and it may be adopted in other electronic devices such as game machines.

[0098]

As described above, according to the present invention,
There is an effect that the number of screwed points can be reduced, the load at the time of manufacturing work can be reduced, the manufacturing cost can be suppressed, and the recyclability can be improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a projector according to an embodiment of the present invention as seen from above.

FIG. 2 is an overall perspective view of the projector as seen from below.

FIG. 3 is a perspective view showing the inside of the projector,
Specifically, it is a diagram in which the upper case of the projector is removed from the state of FIG. 1.

FIG. 4 is a perspective view showing the inside of the projector,
Specifically, it is a view seen from the rear side with the shield member, the driver board, and the upper light guide removed from the state of FIG.

FIG. 5 is a perspective view showing the inside of the projector,
Specifically, it is a diagram in which the optical unit is removed from the state of FIG.

FIG. 6 is a perspective view of the optical unit as viewed from below.

FIG. 7 is a plan view schematically showing an optical system of the projector.

FIG. 8 is a perspective view showing an inner side of the upper case.

FIG. 9 is a perspective view showing an inner side of a lower case to which a bottom member that constitutes the shield member is attached.

FIG. 10 is a perspective view of the shield member seen from the front side.

FIG. 11 is a perspective view of the shield member seen from the rear side.

FIG. 12 is a perspective view showing an upper surface member that constitutes the upper case and the shield member.

FIG. 13 is a perspective view showing how the lamp drive circuit fixing member, the power supply fixing member, and the interface board fixing member are attached to FIG. 9.

FIG. 14 is a perspective view showing how the driver board and the upper surface member are attached to FIG.

FIG. 15 is a vertical cross-sectional view showing an enlarged front side of the projector.

FIG. 16 is a view showing a modified example of a contact portion between the top member and the bottom member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Projector 2 Exterior case as a housing for electronic equipment 3 Power supply unit 21 as a body of electronic equipment 21 Upper case 23 as one housing member Lower case 80 as another housing member Shield member 81 as a shield structure Top member 82 as a shield member Bottom member 90 as another shield member Driver board 214X as a circuit component ridge 231X which is a deforming means and constitutes an engaging portion boss 234X A groove portion 821A, 821B constituting an engaging portion Cutting and Raising Piece 825 Insertion Hole 825X Claw

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4E360 AB02 AB14 BA08 BC05 ED02                       ED06 ED17 ED23 ED27 GA06                       GA34 GA53 GB01                 5E321 AA01 CC02 CC03 GG05

Claims (8)

[Claims] 1. A housing for an electronic device in which a shield structure for shielding noise generated from a circuit component constituting a main body of the electronic device housed therein is formed, and at least two housings engaging with each other. A shield member is provided independently of the casing member inside the casing member of the casing members, the shield member covering the circuit component independently of the casing member. A housing member other than the housing member and the one shield member, and the one housing member is provided with the one shield member to the other housing member side. The electronic device housing is characterized in that a deformation means is provided for deforming the one shield member and ensuring electrical conduction between the one shield member and the other housing member. 2. The electronic device casing according to claim 1, wherein the deforming means is configured as an engaging portion that engages two casing members. . 3. The electronic device casing according to claim 1, wherein another shield member that comes into contact with the one shield member is independently provided inside the other casing member. The housing for electronic equipment is provided, wherein the shield structure includes the one shield member and the other shield member. 4. The electronic device casing according to claim 3, wherein at least one of the casing members has a boss formed therein, and the shield member disposed inside the casing member includes: An electronic device housing, wherein an insertion hole into which the boss is inserted is formed, and a claw that engages with the boss is formed around the insertion hole. 5. The electronic device casing according to claim 3, wherein at least one of the shield members has a cut-and-raised piece cut and raised on the electronic device main body side housed inside. A casing for electronic equipment, wherein the metal piece of the electronic equipment main body is formed in contact with the cut-and-raised piece. 6. The electronic device casing according to claim 5, wherein a flange portion is formed on an outer peripheral portion of one of the two shield members, and the shield member of the other shield member is formed. A casing for electronic equipment, characterized in that a cutout groove into which the collar portion is inserted is formed in an outer peripheral portion. 7. The electronic device casing according to claim 1, wherein the circuit component has a noise generation source such as an oscillation circuit, and the shield structure has the noise generation source. A casing for electronic equipment, which is formed so as to cover at least the. 8. A projector comprising the electronic device casing according to claim 1.