JP2000056396A - Projector device and lamp box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a broken piece from coming out to the outside even though a lamp is damaged when a lamp box is mounted by setting a state where the vent hole of the lamp box is covered with a shutter before mounting a lamp mount part cover and mounting the cover on a housing, whereby the shutter slides to open the vent hole. SOLUTION: Under the condition where the lamp box 100 is detached from the projector device, the vent hole for cooling the lamp is covered with the shutter 6. When the lamp box 100 is attached to the projector device, the lamp mount part cover is mounted on the lamp box 100. A turning lever 14 is turned by the projecting part of the lamp mount part cover, so the an arm 9 slides. When the arm 9 slides, the shutter 6 also slides. Thus, the lamp box 100 covered with the shutter 6 becomes such a state that the vent hole is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector device for enlarging and projecting an image with light from a light source and a lamp box mounted on the projector device and generating light from the light source.

[0002]

2. Description of the Related Art A discharge lamp such as a metal halide lamp is used as a light source of a conventional projector.
Since this lamp is a consumable item, it is necessary to replace the lamp while continuing to use the projector device. Various modifications have been made to this lamp in the past, for example, Japanese Utility Model Laid-Open No. 3-62387 and Japanese Utility Model Laid-Open No. 5-38645.
Some of them can be seen in Japanese Patent Application Laid-Open Publication No. H8-314011 and the like.

FIG. 26 shows, for example, Japanese Utility Model Laid-Open No. 5-38645.
FIG. 1 is a process diagram showing a process of taking out a conventional lamp box from a liquid crystal projector, which is disclosed in Japanese Patent Application Laid-Open Publication No. HEI 10-115,036. FIG.
As shown in FIG. 6, the housing 200 of the projector device 1 has a housing portion 2 for housing the lamp box 100X.
20 are provided. When the projector device 1 is normally used, the lamp box 100X
Is attached, and the storage section 220 of the housing 200 is
Covered at 10. In order to air-cool the lamp box 100X, the cooling fan 270 is
It is stored in the storage unit 220 together with X. For example, the design cover 210 is provided with an exhaust port 211 in order to release the wind blown from the cooling fan 270 to the outside.

[0004] The lamp box 100X is configured to be detachable from the housing 200 for replacement. When removing the lamp box 100X, as shown in FIG.
Remove. Next, as shown in FIG. 26B, the cooling fan 270 is moved in the direction of arrow 230 so as not to hinder the removal of the lamp box 100X, and the lamp box 100X is pulled out in the direction of arrow 240. The mounting of the new lamp box 100X is performed in a procedure reverse to the above-described removal procedure.

FIG. 27 is a schematic sectional view showing an outline of one configuration of the projector device. The lamp box 100X includes a metal halide lamp 2 as a light source and a reflector 3 for condensing light emitted from the metal halide lamp 2.
And are stored. Light emitted from the lamp box 100X is reflected by the cold mirror 250 and guided to the dichroic mirror 251. Using two dichroic mirrors 251, the light emitted from the light source is decomposed into red, green and blue light. The decomposed light passes through the corresponding liquid crystal panel 253. When passing, the light of three colors is 3
Different image information is given to each of the liquid crystal panels 253. The three colors of light that have passed through the liquid crystal panel 253 are combined by the dichroic mirror 254. The combined light passes through a projection lens 260 and enlarges and projects an image on a screen (not shown). Metal halide lamp 2
Total reflection mirrors 252 and 255 are also provided between the projection lens 260 and the projection lens 260 for changing the optical path. While the lamp is lit, the cooling fan 270 operates to generate air to cool the metal halide lamp 2. This wind is
The heat passes through the side of the metal halide lamp 2 and the reflector 3 to take heat therefrom, and the ventilation hole 2 of the lamp box 100X
From 6X (see FIG. 26B), the air is exhausted to the outside of the projector device 1 through the exhaust port 211 via the cooling fan 270.

[0006]

Since the light source of the conventional projector apparatus includes a discharge lamp having a high internal pressure as described above, the operation of removing the lamp box is limited to those familiar with the handling. Technical problems do not arise if the regulations are dealt with. However, in recent years, for higher performance, the brightness of the lamp has been increased, the wattage has been increased, and the internal pressure has tended to increase. If the lamp is ruptured due to improper handling, fragments may be scattered from the ventilation holes.

The present invention has been made to solve the above problems, and a lamp box such as a lamp box detached from a projector device or a replacement lamp box is taken out of the projector device. An object of the present invention is to provide a lamp box and a projector device in which, even if the lamp is ruptured, the lamp fragments do not scatter from the ventilation port of the lamp box or the window through which the light of the lamp exits.

[0008]

According to a first aspect of the present invention, there is provided a projector device including a housing, a lamp for emitting light for enlarging and displaying an image, and a ventilation port for fixing and holding the lamp and for passing air. Comprising a box having shutter means provided on the top of the box and slidably held.
A lamp box mounted on a lamp mounting portion in the housing, a rotating member provided on the housing at a position in contact with shutter means of the lamp box mounted on the lamp mounting portion of the housing, and a lamp on the housing A lamp mounting portion cover having a convex portion which, when mounted on the mounting portion, comes into contact with the rotating member provided in the housing and rotates the rotating member by a predetermined amount in a predetermined direction. It is.

In the projector device according to a second aspect of the present invention, the rotating member has a first rotating lever abutted on a convex portion provided on a lamp mounting cover and rotatably held, and the shutter means. And a second rotating lever that rotates in conjunction with the rotation of the first rotating lever.

A projector device according to a third aspect of the present invention is provided with a detection switch at a rotation end of the rotation member for detecting that the rotation member has been rotated by a predetermined amount by a convex portion of the lamp mounting portion cover. is there.

The projector device according to a fourth aspect of the present invention is provided with a detection switch at the sliding end of the shutter means for detecting that the shutter has slid by a predetermined amount due to the rotation of the rotating member.

In the projector device according to a fifth aspect of the present invention, the convex portion of the lamp mounting portion cover is formed by bending an end of a sheet metal mounted on substantially the entire back surface of the lamp mounting portion cover.

According to a sixth aspect of the invention, there is provided a projector device including a housing, a lamp for emitting light for magnifying and displaying an image, a box fixedly holding the lamp, and having a ventilation opening for passing air, Shutter means provided on the upper part of the shutter, slidably held to open and close the ventilation port,
A locking member provided at the lower part of the front of the box for fixing the box holding and holding the lamp in the housing, and rotatably mounted to open and close a ventilation port provided on the lower surface of the box for holding and holding the lamp. A lamp box comprising a rotating lid provided, a lamp cover covering a surface of a lamp box from which light for magnifying an image is emitted, and a lamp box mounted on a housing, and the lamp cover is removed from the lamp box. A lock receiving portion that meshes with the lock member when the lock member is pressed.

In the projector device according to a seventh aspect of the present invention, the lock member comprises a lock lever rotatably mounted in a lower part on the front surface of the box while being urged in one direction by an elastic body. The mounting member provided on the box and the lamp cover are provided at the lower end of the lamp cover, and abut on the rotating shaft side end of the rotating lid provided on the lower side of the box. A first convex portion for rotating the rotary cover, and a second convex portion provided at the lower end of the lamp cover and abutting on the lock lever and rotating the lock lever. is there.

In the projector device according to an eighth aspect of the present invention, the shutter means has a hole on the front side of the box, and the lamp cover is provided above a cover portion covering the front of the box. It is made of claw-shaped members that fit together.

In the projector device according to the ninth aspect of the invention, the lamp cover has a handle provided so as to connect an upper portion of the cover covering the front surface of the box and an upper rear portion of the box. Is located higher than the upper surface of the housing when the lamp box is mounted on the lamp mounting portion.

According to a tenth aspect of the present invention, there is provided a projector device comprising:
A housing, a lamp that emits light for displaying an image, a lamp box fixed to the lamp and attached to a lamp mounting portion in the housing, and covers the lamp mounting portion in the housing. Therefore, a lamp mounting portion cover attached to the housing, and provided on the upper surface of the box, and when the lamp mounting portion cover is mounted on the housing, substantially the surface located on the back side of the lamp mounting portion. And a holder having a fourth projection formed at a height such that it is in contact with the holder.

[0018] A projector device according to an eleventh aspect of the present invention comprises:
A housing and a lamp that emits light for displaying an image, a box that holds and holds the lamp, and has a ventilation hole for passing air, and a surface of the box is provided with an elastic body to close the ventilation hole. When the lamp box is attached to the housing, the lamp box includes a lamp cover that is urged and rotatably provided, and the housing comes into contact with the lamp cover when the lamp box is mounted. This is provided with a protruding portion for rotating.

A lamp box according to a twelfth aspect of the present invention provides a lamp for emitting light for magnifying and displaying an image, a box for holding and holding the lamp, and having a ventilation opening for passing air, and an upper portion of the box. A shutter member slidably held to open and close the ventilation port, a lock member provided at the lower part of the front of the box for fixing the box fixedly holding the lamp in the housing, and a lamp. A rotatable lid rotatably mounted to open and close a ventilation port provided on the lower surface of the box for fixing and holding the hole, a hole provided on the sliding start end side of the shutter means, A cover portion that covers the entire front surface, a first protrusion provided at a lower end of the cover portion, abutting on the rotating lid, and rotating in a direction to close the rotating lid;
It is provided at the lower end of the cover part and contacts the lock member,
A second convex portion for rotating the lock member in a predetermined direction, a claw-shaped member provided above the cover portion for engaging with a hole provided in the shutter means, and one end provided above the cover portion; The other end is provided with a lamp cover including a handle attached to a rear portion of the box.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a combination diagram showing a liquid crystal projector device according to Embodiment 1 of the present invention. 1 is a projector device, 50 is a housing, 51 is a lamp attachment cover for covering the lamp attachment of the projector device 1, and 52 is a projection lens.

FIG. 2 is a view showing a lamp serving as a light source of the projector device. FIG. 2 (a) is a view of the lamp 4 as viewed from the front, FIG. 2 (b) is a view of the lamp 4 as viewed from the front, FIG.
2C is a view of the lamp 4 as viewed from the rear, and FIG. 2D is a side view. FIG. 3 is a view of the lamp box in a state where the ventilation opening is closed, viewed from three directions. FIG.
3B is a view of the lamp box 3 viewed from the front, and FIG. 3C is a view of the lamp box 3 viewed from the side. FIG. 4 is an assembly diagram showing the lamp box in which the lamp 4 is housed and a ventilation opening for ventilating the lamp 4 is opened, and FIG. 5 shows a lamp box in a state where the ventilation opening is closed. FIG.

In the figure, 2 is a metal halide lamp,
Reference numeral 3 denotes a reflector that reflects light emitted from the metal halide lamp 2 in a predetermined direction. 5 is a box for holding the lamp 4, 6 is a shutter, and a shutter 6b fixed to the box 5 and a shutter 6a slidably mounted below the shutter 6b.
Consists of A guide pin 7 is attached to the shutter 6a, and the guide pin 7 is engaged with a guide groove of a shutter 6b fixed to the box 5 above the shutter 6a. The shutter 6a is slidably held along a guide groove by a guide pin 7, and a lamp 4 is held by an elastic body 8.
Are always urged in a direction to close (close) the ventilation holes 26a and 26b for letting the air flow through. Reference numeral 9 denotes an arm provided on the shutter 6. Reference numeral 10 denotes a hole provided in the shutter 6, and reference numeral 11 denotes a holder attached to the lamp box 100, which has a D convex portion 12. The D convex portion 12 is a convex portion having such a height as to come into contact with the rear surface of the lamp mounting portion cover when the lamp box is mounted at a regular position of the projector device and the lamp mounting portion cover is mounted thereon. is there. Lamp box 10
0 is fixed to the housing 50 by the holder 11.
16 is provided in the box 5 and the shutter 6 is provided with a ventilation opening 26a,
A relief hole formed at a position overlapping the hole 10 provided in the shutter 6 while moving in a direction to close 26b.

FIG. 6 is an assembled view showing the lamp box 100 mounted on the housing 50 of the projector 1 and the arm 7 of the shutter 6 slidably held on the box 5 of the lamp box 100. It is a principal part enlarged view which shows the rotating lever part which contacts. FIGS. 7 and 8 show a structure in which a rotating lever is rotated by a convex portion provided on a pressing sheet metal attached to the back surface of the lamp attaching portion cover 51, comes into contact with the arm 7 of the shutter 6, and is further rotated. FIG. 7 shows a state before the rotation lever is rotated, FIG. 8 shows a state where the rotation lever is rotated by a predetermined amount, and shows that the lamp mounting portion cover 51 is attached to the housing 50. The arrangement of the detection switches for detection is shown. In the figure, 4
Reference numeral 5 denotes a pressing metal plate attached to the back surface of the lamp mounting cover 51, 13 denotes a protruding piece-shaped projection provided perpendicular to the end of the pressing metal plate, 14 denotes a rotating lever, and 15 denotes a rotating lever 14. An elastic body 17 for urging in the direction is a turning shaft that holds the turning lever 14 so as to be turnable. Reference numeral 39 denotes when the lamp mounting portion cover 51 is mounted on the housing 50,
This is a switch for detecting that the lamp mounting portion cover 51 is mounted at a regular position on the housing 50. The projector device 1 can turn on the power for lighting the lamp 4 when the detection switch 39 is turned on.

Next, an operation for mounting the lamp box 100 on the projector device 1 will be described. The lamp box 100 has a form as shown in FIG.
The lamp 4 is fixed and held by the box 5, and at the top of the box 5,
A shutter 6 including a shutter mechanism for opening and closing a ventilation port provided in the box 5 is provided. An arm 9 for transmitting power for sliding the shutter 6a along the guide groove is provided at a right end portion of the shutter 6a (see FIG. 3A). Here, these are collectively referred to as a lamp box 100. The guide pin 7a is attached to the shutter 6a,
The guide pin 7b is formed of a projection provided on the box 5. Although the shutter 6 is provided in the box 5, a shutter 6a constituting the shutter 6 is fixedly held slidably under the shutter 6b.

The shutter 6a is slidably mounted on a guide groove 6c provided on the shutter 6b by a guide pin 7a mounted on the shutter 6a.
Further, the shutter 6a is slidably mounted by a guide groove 6c and a guide pin 7b provided in the box 5. The shutter 6b is attached to the box 5 at a position arranged above the shutter 6a. The shutter 6b has a guide pin 7b fitted in a round hole provided in the shutter 6b, and further has a guide pin 7a.
Is fitted in a guide groove 6d provided in the shutter 6b. In this manner, below the shutter 6b fixedly attached to the box 5, the shutter 6a is slidably attached and the elastic body 8 (for example, an elastic body 8 attached to one end of the fixedly attached shutter 6b) , Spring) is also attached to the shutter 6a and is urged toward the front of the lamp box.
a, 26b.

The lamp box 100 is mounted on the lamp mounting portion by removing the lamp mounting portion cover 51 of the housing 50 of the projector device 1. The state where the lamp mounting cover 51 is removed is shown in FIG. However, FIG. 6 shows a state where the lamp box is already mounted.

Lamp box 1 to projector device 1
00 will be described. Lamp box 10
Reference numeral 0 denotes a state in which the vent hole for cooling the lamp is closed when the projector is detached from the projector device 1, and a lamp cover is attached for that purpose. The lamp cover and the like will be described later in detail, and here, the operation of the shutter 6 will be mainly described. The lamp box 100 is mounted on the projector device 1 as shown in FIG. At this point, a lamp cover described below has been removed.

When the projector device is mounted on the lamp box, the lamp mounting cover 51 is mounted thereon. The lamp mounting cover 51 holds the lamp box 10 when mounted on the projector device 1.
The projection 1 is located at a position where the projection 1
3 are provided. Convex part 13 in contact with rotation lever 14
Is inclined, and when the convex portion 13 and the rotating lever 14 abut on each other, the rotating lever 14 is
7 (see FIGS. 7 and 8). When the rotation lever 14 rotates, the rotation lever 14 in contact with the arm 9 of the lamp box 100 also rotates in conjunction with the rotation,
The arm 9 is slid in the direction of the arrow. When the arm 9 slides, the shutter 6a provided in the lamp box 100 slides (slids) along the guide groove 6d to open the ventilation holes 26a and 26b. Since the shutter 6 before sliding is urged forward of the lamp box 100 by the elastic body 8, the ventilation port 26a,
26b is kept closed. In other words, until the lamp mounting portion cover is mounted, the ventilation holes 26a, 26
b is closed by the shutter 6.

Referring to the drawings, when the lamp mounting portion cover 51 is mounted, the rotation lever 14a is rotated by the projection 13 as shown in FIGS. With the rotation of the rotation lever 14a, the rotation lever 14b also rotates to slide the arm 9. When the arm 9 slides, the shutter 6a also slides. As a result, FIG.
As shown in FIG. 3, the lamp box 1 in a state where the ventilation holes 26a and 26b are closed by the shutter 6a.
00, like the lamp box shown in FIG.
The shutter 6a slides to the rear of the lamp box 100 to open the ventilation holes 26a and 26b. When the lamp mounting cover 51 is removed from the housing 50, the shutter 6a slides in the forward direction of the lamp box by the biasing force of the elastic body 8, and closes the ventilation opening.

As described above, before the lamp mounting portion cover 52 is mounted, the ventilation holes 26a and 26b that are closed for safety are mounted on the housing 50 by mounting the lamp mounting portion cover 52 on the housing 50. Can be opened. In other words, before the lamp box is mounted on the projector device, the ventilation hole can be closed and the safety state can be maintained, and after the lamp box is mounted on the projector device, the cooling device for turning on the lamp can be used. The ventilation opening for sending the wind can be opened. Thus, it is possible to provide a shutter mechanism that facilitates opening and closing of the ventilation opening in accordance with opening and closing of the lamp attachment portion cover.

Embodiment 2 9A and 9B are component diagrams showing the lamp cover, FIG. 9A is a diagram of the lamp cover viewed from the front, FIG. 9B is a diagram of the lamp cover viewed from the side, FIG. FIG. 9D is a view of the handle provided on the upper part of the lamp cover as viewed from the rear. FIG. 10 is a view of the lamp box to which the lamp cover is attached when viewed from three directions. FIG. 10A is a view of the lamp box as viewed from above.
(B) is a view of the lamp box viewed from the front, FIG.
(C) is a view of the lamp box as viewed from behind, FIG.
(D) is the side view which looked at the lamp box from the side.
11 and 12 are assembly diagrams in which a lamp cover (handle) is attached to the lamp box 100, FIG. 11 is a front view,
FIG. 12 shows the lamp box viewed from above.

In the figure, reference numeral 20 denotes a lamp cover, 21 denotes a handle provided on the upper part of the lamp cover 20 and held by a hand.
Reference numeral 2 denotes an A provided substantially at the center of the front surface of the lamp cover.
The convex portions, 23 and 24 are B convex portions and C convex portions provided on both sides of the A convex portion 22, 25 is a lock lever provided at the lower portion of the box 5, and 27 urges the lock lever 25 in one direction. An elastic member 28 is provided on the box 5 of the lamp box 100, and a lamp cover guide serving as a guide when the lamp cover 20 is inserted into the box 5, and 29 is a rotation shaft that holds a lock lever so as to be rotatable.

FIGS. 13 and 14 show the housing 5 with the lamp cover 20 attached to the box 5 of the lamp box 100.
FIG. 13 is a diagram showing the lamp box 100 mounted on the lamp 0, FIG. 13 is a partial element diagram on the side, and FIG. 15 and 16 are views showing a state in which the lamp box 20 is removed from the box 5 of the lamp box 100 after the lamp box 100 is mounted on the housing 50. FIG. 13 is a partial element view of the side surface, and FIG. FIG. 4 shows a partial element diagram as viewed from the back side. In the figure, reference numeral 30 denotes a vent provided on the bottom surface of the box 5 for passing cooling air through the lamp 4;
Reference numeral 1 denotes a rotating lid that opens or closes the ventilation port 30 and is rotatably held by the box 5. Reference numeral 32 denotes an elastic body that biases the rotating lid 31 in one direction. 13 and 14, since the lamp cover 20 is attached to the box 5, the A convex portion 2 shown in FIG.
2 is in contact with one end of the rotating lid 31, and the rotating lid 31 is
2 and is rotated in the direction of the ventilation opening 30 by overcoming the biasing force of the second. Therefore, the rotating lid 31 covers the ventilation port 30. 15 and 16, since the lamp cover 20 has been removed from the box 5, the rotating lid 31 is urged by the elastic body 32 in a direction to open the lid, and the ventilation port 30 is opened.

Next, the operation of mounting the lamp box 100 with the lamp cover 20 mounted on the projector device 1 will be described. Lamp box 10
0 indicates that the lamp cover 20 is attached when the projector cover 1 is detached from the projector device 1. The lamp cover 20 is also attached to the replacement lamp box. Thus, when the lamp box is handled as a single lamp box for safety, the lamp cover 20 is attached.

As described above, when the lamp box 100 is handled alone, the lamp cover 20 is attached.
The operation of mounting the lamp cover 20 at 00 will be described. The lamp box 100 without the lamp cover attached is as shown in FIG.
As shown in FIG. 3A, the shutter 6 is closed to close the ventilation port. Also, as shown in FIG.
The L-shaped lock levers 25a and 25b are urged in the arrow direction by an elastic body (for example, a spring). Further, the rotating lid 31 is open.

The lamp box 10 in such a state
0, the lamp cover 20 is attached. Lamp cover 2
Numeral 0 has a cover 24 that covers the front of the lamp box 100. To attach the lamp cover 20 to the lamp box 100, the cover portion 29 is slid along the front surface of the lamp box 100, and is passed through the inside of the lamp cover guide 28 and attached. As you slide the lamp cover, the lamp cover 10
The A convex part 22 provided on the lower side of the cover part 35 of the “0” abuts on the fixed end side of the rotating lid 31 to rotate the rotating lid 31,
The lid is closed. When the lamp cover is not attached, as can be seen from the bottom view of the lamp box 100 in FIG. 16, the rotating lid 31 is in an open state. The rotating lid 31 rotates about a rotating shaft 33 and is urged by an elastic body 32 in a direction to open the lid. FIG. 14 is a view of the lamp box 100 with the lamp cover 20 attached thereto when viewed from below. The turning lid 31 is in a closed state, and covers the ventilation port 30 provided on the lower surface of the lamp box 100. In.

Also, the two parts provided on both sides of the cover part 35 are provided.
The two B convex portions 24 contact the lock lever 25 and the elastic body 2
The lock lever 25 is rotated with a force stronger than the urging force of the lock lever 7. The lock lever 25a rotates clockwise about the rotation shaft 29, and the lock lever 25b rotates counterclockwise about the rotation shaft 29. The lamp box 100 shown in FIG.
The rotation lid 31 is closed and the lock lever 25 is closed.
a and 25b are each turned in the direction of the arrow. The c-projection 24 provided on the lamp cover 20 has the hole 1
Since the shutter 6 is inserted at 0, the shutter 6 cannot slide. The cover 20 covers the front of the lamp and closes the opening.

As described above, the lamp box with the lamp cover 20 attached thereto is attached to the projector 1
Attach to The lamp cover 20 is provided with a handle 21 for easy handling by the user. The lamp box 100 as viewed from above as shown in FIG.
The user grips the handle portion 20 and lifts it up, and mounts it on the projector device 1. FIG. 12 is a side view of the lamp box 100 mounted on the projector device 1. In this state, since the lamp cover 20 has not been removed yet, the front surface of the lamp box 100 is still covered by the cover portion 35, the rotating lid 31 is closed, and the ventilation port 30 is closed. .

After the lamp box 100 is mounted on the projector 1, the lamp cover 20 is removed.
The lamp cover 20 is fitted in both the hole 10 of the shutter 6b provided in the lamp box 100 and the escape hole 16 of the shutter 6a located at the same position as the hole 10;
Furthermore, it is fixed and held by a screw 18 to the box 5 of the lamp box 100. Therefore, by removing the screw 18, the lamp cover 20 is removed from the lamp box 100.
Can be removed. FIG. 15 shows a state in which the screw 18 is removed and the lamp cover 20 is pulled upward. By removing the lamp cover 20, the front of the lamp box is no longer covered, and furthermore, by contacting the rotating lid 30, the A-convex portion, which has applied a force to rotate the rotating lid 31 in the closing direction, becomes 31 so that the rotating lid 31
Is opened, and the ventilation port 30 is opened. The lamp box,
As shown in FIG. 15 as viewed from the side and FIG. 16 as viewed from below, the rotating lid 31 is opened, and the ventilation port 30 is opened.

When the lamp cover 20 is removed, the lamp cover 20 comes into contact with the lamp cover 20 in the same manner.
The B convex portion 23 that has exerted the force to rotate to the position is also separated from the lock lever 25. Therefore, the lock levers 25a and 25b rotate in the direction of being urged by the elastic body 27, and come into a state as shown in FIG. by this,
The lock levers 25a and 25b are engaged with the lock receiving portion 55, and the lamp box 100 is fixed to the projector device 1 (housing 50).

As described above, since the lock lever 25 is rotated by removing the lamp cover 20, the lock lever 25 does not engage with the lock receiving portion 55 when the lamp cover 20 is attached to the lamp box 100. (Refer to FIG. 11), it can be freely removed from the projector device. Further, when the lamp cover 20 is removed from the lamp box 100, the lock lever 25 engages with the lock receiving portion 55, and
Cannot be removed. Therefore, when the lamp cover is not attached, the lamp box cannot be removed from the projector device. When the lamp box is removed, the lamp cover is always attached. Can be. Even if the lamp box is simply prepared for replacement, if the lamp cover is not attached, the lock lever 25 cannot be brought into a state in which the lock lever 25 can be engaged with the lock receiving portion 55. However, even if it is a replacement lamp box, it is necessary to attach the lamp cover 20, and safety can be maintained. Further, if the lamp cover 20 is attached to the lamp box 100, the C convex portion 24 is formed in the hole portions 10 of the shutters 6a and 6b,
Since the shutter 6 is inserted and fitted in the escape hole 16, the opening and closing of the shutter 6 can be locked.

Embodiment 3 FIG. 18 is a partial element diagram showing a configuration of a rotation lever and a detection switch for detecting rotation of the projector device according to Embodiment 2 of the present invention. In the figure, reference numeral 40 denotes a detection switch, which is arranged such that the switch is operated and detected at a position where the projection 13 of the pressing metal plate 45 attached to the lamp attachment cover 51 has rotated the rotation lever 14 by a predetermined amount. .

After the lamp box 1 is mounted on the projector device 1 and the lamp cover 1 is removed, the lamp mounting cover 51 is fitted into the housing 50 (see FIG. 18A). When the lamp mounting portion cover 51 is fitted into the housing 50, the projection 13 comes into contact with the rotation lever 14a, and the rotation lever rotates by a predetermined amount in the direction of the arrow (see FIG. 18B). By the way, since the detection switch is provided at a position where the detection switch is turned on when the rotation lever is turned by a predetermined amount, by detecting that this detection switch is turned on, the lamp mounting portion cover is moved to the projector. Apparatus 1
(The housing 50) can be known to be securely attached. The projector device is set so that the power for turning on the lamp 4 can be turned on when the detection switch 40 is turned on. By doing so, the lamp 4 cannot be turned on unless the lamp mounting portion cover is completely mounted, and the lamp does not light up when the lamp mounting portion cover is incompletely mounted, and the lamp 4 does not light up. It is.

Embodiment 4 FIG. FIG. 19 is a partial element diagram showing a configuration of a detection switch for detecting a sliding end of a shutter slid by a rotation lever of a projector device according to Embodiment 3 of the present invention. In the figure,
A detection switch 41 is turned on when the shutter 6 slides by a predetermined amount.

After the lamp box 1 is mounted on the projector device 1 and the lamp cover 1 is removed, the lamp mounting portion cover 51 is fitted into the housing 50 (see FIG. 19A). By fitting the lamp mounting portion cover 51 into the housing 50, the projection 13 comes into contact with the rotation lever 14a, and the rotation lever rotates around the rotation shaft 17 by a predetermined amount in the direction of the arrow. Further, the turning lever 14b also turns in conjunction with the turning of the turning lever 14a. The shutter 6a is urged by the spring 8 in the direction opposite to the arrow, but since the arm 9 is pressed by the rotating lever 14b with a force larger than the urging force, the shutter 6a also slides in the direction of the arrow. (See FIG. 19b).

By the way, when the lamp mounting cover 51 is completely attached, the rotation lever is rotated by a predetermined amount, and the detection switch is turned on when the arm 9 provided on the shutter 6a moves by a predetermined amount. Since the detection switch is turned on, the lamp mounting unit cover is connected to the projector device 1.
(The housing 50) can be known to be securely attached. The projector device is set so that the power for turning on the lamp 4 can be turned on when the detection switch 41 is turned on. By doing so, even if the lamp mounting portion cover is completely mounted, the lamp 4 cannot be turned on when the shutter 6a does not slide by a predetermined amount due to some inconvenience, and the shutter 6a cannot be turned on. The lamp 4 cannot be turned on unless the ventilation port is completely opened by sliding a predetermined amount. That is, if the cooling of the lamp box 100 is incomplete, the lamp cannot be turned on, and sufficient safety can be ensured.

Embodiment 5 FIG. 20 is a diagram showing a structure of a lamp mounting portion cover of a projector device according to a fourth embodiment of the present invention, and FIG. 21 is a diagram showing a direction in which the lamp mounting portion cover is mounted on a housing. In the figure, reference numeral 45 denotes a pressing metal plate which is attached to the lamp attaching portion cover 51 with the attaching screw 46 and on which the convex portion 13 for rotating the rotating lever 14 is formed.

As can be seen from FIG. 21, the pressing metal plate 45 is mounted so as to be located on the lamp box 100 side when the lamp mounting portion cover 51 is mounted on the housing 50. Further, as shown in FIG.
Reference numeral 5 covers almost the entire surface of the lamp mounting portion cover 51. The pressing metal plate 45 blocks radiant heat from the lamp box 100 generated when the projector device 1 is operating, and prevents heat from being transmitted to the lamp mounting portion cover 51. In addition, since the convex portion 13 is provided integrally with the pressing metal plate 45, heat from the lamp box transmitted to the convex portion 13 via the rotating lever 14 covers the entire surface of the lamp mounting portion cover 45. The heat can be dissipated by the pressing metal plate 45. This can prevent an unexpected situation such as deformation of the lamp mounting portion cover 45 due to heat when the projection 13 is provided separately from the pressing metal plate 45.

Embodiment 6 FIG. FIGS. 5, 9, and 12 are an assembly diagram and a component diagram showing a structure of a projector device according to a fifth embodiment of the present invention, in which a shutter cannot be slid. When the shutter 6a is positioned in the state shown in FIG. 5, and the hole C of the lamp cover 20 is inserted into the state where the hole 10 of the shutter 6a and the escape hole 16 of the shutter 6b meet, the state shown in FIG. 12 is obtained. The shutter 6 is caught by the C-convex portion 24 of the lamp cover 20 and cannot slide on the surface of the box 5.

Embodiment 7 FIG. 22 and 23 are views showing a structure in which a D-shaped protrusion formed on a handle and a holder for fixing a lamp box of a projector device according to a seventh embodiment of the present invention interferes with a lamp mounting portion cover. When the lamp box is mounted at a proper position of the projector device and the lamp mounting cover is mounted thereon, the D convex portion 12 comes into contact with the pressing metal plate on the back surface of the lamp mounting cover or has a slight gap. Is a height of about the height of the projection.

FIG. 22 shows a state where the lamp cover 20 is attached to the box 5 of the lamp box 100. In this state, the lamp mounting cover 51 hits the handle 21 of the lamp cover 20 and cannot be mounted at a proper position on the housing 50. In FIG. 23,
When the box 5 of the lamp box 100 is not mounted at the regular height position of the housing 50, the D convex portion 12 is shown in FIG. 23 (FIG. 23 shows the lamp box 100 mounted at the regular position). The height is higher toward the lamp mounting portion cover 51 side. In that case, the lamp mounting portion cover 51 cannot be mounted at a regular position on the housing 50.

As described above, when the lamp cover 20 is still attached to the lamp box 100, or even when the lamp cover 20 is removed, the lamp box 100 is attached to a proper position of the housing 50 of the projector 1. If not, the lamp mounting portion cover 52 is
Can not be installed in the correct position. Thereby, it is possible to prevent the power of the projector device 1 from being turned on in a state where the lamp box 100 is incompletely mounted.

Embodiment 8 FIG. FIGS. 24 and 25 are partial element diagrams showing a structure for opening and closing a ventilation hole for passing air through a lamp housed in a box in a lamp box in a projector device according to an eighth embodiment of the present invention. In the figure, reference numeral 60 denotes a first ventilation port, 61 denotes a second ventilation port, 62 denotes a first rotating lid rotatably arranged to open and close the first ventilation port 60, and 63 denotes a second rotation port. Ventilation opening 6
A second pivoting lid 64 rotatably disposed to open and close 1, a first pivot shaft rotatably supporting the first pivoting lid 62, and 65 a second pivotal lid. A second rotating shaft 66 rotatably supporting the moving lid 63, a first protrusion 66 provided on the housing 50 for rotating the first rotating lid 62 by a predetermined amount, and 67 a housing 5
Reference numeral 70 denotes a second convex portion provided at 0 to rotate the second rotary lid 63 by a predetermined amount, 70 denotes a box for storing the lamp 4, and 101 denotes a lamp box.

In the state shown in FIG. 24, the first and second rotating lids 62, 63 are always urged by respective elastic bodies (not shown) in the direction of closing the first and second ventilation holes 60, 61. ing. When the lamp box 101 is set in the direction of arrow 68 shown in FIG. 24, that is, when the lamp box 101 is mounted on the housing 50 of the projector device 1, the state shown in FIG. The first turning lid 62 is turned by a first protrusion 66 provided on the housing 50 by a predetermined amount in a direction to open the first ventilation port 60 around the first turning shaft 64. Further, the second rotating lid 63 is
Is rotated by a predetermined amount in a direction in which the second ventilation port 61 is opened around the second rotation shaft 65 by the second projection 67 provided on the second rotation shaft 65. In this way, the first and second ventilation ports 60, 61
Is open. Thereby, when the lamp box 101 is mounted on the projector device 1,
The rotating lid is rotated to open the ventilation port. That is, when handled only by the lamp box, the rotating lid is always in a closed state, and the ventilation opening is also closed, so that safety can be ensured.

[0055]

According to the projector device of the first invention, before the lamp mounting portion cover is mounted on the housing, the ventilation opening of the lamp box mounted on the lamp mounting portion is closed by the shutter means. The lamp mounting portion cover is attached to the housing, and the projection provided on the lamp mounting portion rotates the rotating member by a predetermined amount, so that the shutter member is slid by the rotating member. When the lamp box is installed, the vents are closed even if the lamp is damaged, so that the broken pieces of the lamp may pass through the vents and jump out of the box. When the lamp mounting part cover is attached to the housing, the ventilation opening of the lamp box can be opened. It can be passed through the wind to-flops and will be able to operate safely.

According to the projector device of the second aspect of the invention, the projection provided on the lamp mounting cover comes into contact with the first rotating lever, and the first rotating lever is rotated. Since the second rotating lever abutting on the means can be rotated in conjunction therewith, the power transmitted to the first rotating lever can be reliably transmitted to the shutter means by attaching the lamp mounting portion cover to the housing. Power can be changed to slide.

According to the projector device of the third aspect of the present invention, the rotation of the rotation lever is moved to a position where the rotation member for sliding the shutter means for opening the ventilation hole for ventilating the lamp is rotated by a predetermined amount. Since the detection switch for detecting is arranged, it is possible to confirm whether the rotation lever has been surely rotated, and it is possible to improve reliability.

According to the projector device of the fourth aspect, the shutter means for opening the ventilation hole through which the wind passes through the lamp is moved to a position where the shutter means is slid by a predetermined amount by the rotation of the rotation member.
Since the detection switch for detecting the sliding of the shutter is provided, it is possible to confirm whether the shutter slides reliably and the ventilation opening is sufficiently opened, and the reliability can be improved.

According to the projector device of the fifth aspect, the end of the sheet metal attached to the lamp mounting portion cover so as to cover substantially the entire back surface of the lamp mounting portion cover is bent toward the lamp box side. Since the lamp mounting portion cover is attached to the housing in which the lamp box is also mounted,
The rotating member can be rotated, and the radiant heat from the lamp box is not directly radiated to the lamp mounting portion cover. Also, since the protruding portion is formed by bending the end of the sheet metal, the protruding portion abuts on the shutter means, so that heat from the lamp box transmitted to the protruding portion can be substantially removed from the rear side of the lamp mounting portion cover. Heat can be dissipated by the sheet metal attached to the entire surface.

According to the projector device of the sixth aspect, the housing, the lamp that emits light for enlarging and displaying an image, a box having the ventilation hole through which the lamp is fixed and held and through which air is passed, Shutter means provided on the upper portion of the box and slidably held to open and close the ventilation port, and a lock member provided on the lower front surface of the box for fixing the box fixedly holding the lamp in the housing. , A lamp box comprising a rotating lid rotatably mounted to open and close a ventilation opening provided on the lower surface of a box for fixedly holding the lamp, and a lamp for emitting light for magnifying and displaying an image A lamp cover that covers the surface of the box, and a lock receiving portion that engages with the lock member when the lamp box is attached to the housing and the lamp cover is removed from the lamp box. When the lamp cover is not attached to the lamp box, the lock member and the lock receiving portion are engaged with each other, so the lamp box cannot be removed from the housing. It can be prevented from being taken out and can be kept safe.

According to the projector device of the seventh aspect of the present invention, the lock lever for fixing the lamp box to the housing is rotated by attaching or detaching the lamp cover attached to the lamp box to lock the lamp box. The lamp box can be engaged with and released from the receiving part, so that the lamp box can be taken out of the housing with the lamp cover attached, and the lock part and the lock receiving part can be taken out with the lamp cover removed. Are engaged with each other, so that the lamp box cannot be taken out of the housing, and the lamp box can be prevented from being taken out of the housing in a state where the lamp is exposed, so that safety can be maintained.

According to the projector device of the eighth aspect, when the lamp cover is attached to the lamp box, the claw-like member and the hole provided in the shutter are engaged, so that the sliding of the shutter is restricted. The shutter means does not slide unless the lamp cover is removed.

According to the projector device of the ninth aspect, the lamp cover has a handle provided so as to connect the upper part of the cover covering the front surface of the box and the upper rear part of the box. The handle is located higher than the top of the housing when the lamp box is mounted on the lamp mounting part, so the lamp mounting part cover cannot be mounted on the housing without removing the lamp cover. It is possible to prevent the projector device from operating with the lamp cover attached.

According to the projector device of the tenth aspect of the present invention, the projector device is mounted on a lamp mounting portion in the housing, which comprises a housing, a lamp for emitting light for displaying an image, and a box for fixing and holding the lamp. A lamp box, a lamp mounting part cover mounted on the housing to cover the lamp mounting part in the housing, and a lamp mounting part cover provided on the upper surface of the box, the lamp mounting part cover being mounted on the housing. Sometimes, the lamp box is mounted at a regular position in the housing because it has a holder having a fourth convex portion formed at a height substantially in contact with the surface located on the back side of the lamp mounting portion. When the lamp mounting portion cover is not attached to the housing, the mounting portion cover cannot be securely attached to the housing because it hits the fourth convex portion even when the lamp mounting portion cover is attached to the housing. If box is correctly mounted in the proper position, can not operate the projector apparatus, it can be kept safe.

According to the projector device of the eleventh aspect, the housing, the lamp that emits light for displaying an image, the box having the ventilation hole through which the lamp is fixed and held and the ventilation is provided, On the surface of the box, a lamp box comprising a rotating lid urged in a direction to close the ventilation opening by an elastic body and rotatably provided, and the lamp box was mounted on a housing. Sometimes, a projection is provided which comes into contact with the rotating lid and rotates the rotating lid by a predetermined amount, so that the ventilation port which is normally closed is opened by attaching the lamp box to the housing. It is possible,
Further, since the rotating lid is closed even when the lamp box is removed from the projector device, safety can be maintained even if the lamp is damaged when the lamp box is removed from the projector device. When attached to the device, the rotating lid can be rotated to open the ventilation port, and the device can be operated safely.

A lamp box according to a twelfth aspect of the present invention includes a lamp for emitting light for magnifying and displaying an image, a box for fixing and holding the lamp, and having a ventilation hole for passing air, and an upper portion of the box. A shutter member slidably held to open and close the ventilation port, a lock member provided at the lower part of the front of the box for fixing the box fixedly holding the lamp in the housing, and a lamp. A rotatable lid rotatably mounted to open and close a ventilation port provided on the lower surface of the box for fixing and holding the hole, a hole provided on the sliding start end side of the shutter means, A cover portion that covers the entire front surface, a first protrusion that is provided at a lower end of the cover portion, abuts against the rotating cover, and rotates in a direction to close the rotating cover, and is provided at a lower end of the cover portion; Abuts the lock member A second protruding portion to be rotated in the direction, a claw-shaped member provided above the cover portion and engaged with a hole provided in the shutter means, one end provided above the cover portion, and the other end provided as a box And a lamp cover comprising a handle attached to the rear part of the lamp box, so that the ventilation hole provided in the lamp box is closed, and the light emitting surface of the lamp box is kept covered by the lamp cover. Can be handled safely.

[Brief description of the drawings]

FIG. 1 is an assembly diagram showing a liquid crystal projector device.

FIG. 2 is an assembly diagram showing a lamp.

FIG. 3 is a view of the lamp box as viewed from three directions.

FIG. 4 is an assembled view of the lamp box as viewed from above.

FIG. 5 is an assembled view of the lamp box as viewed from above.

FIG. 6 is an assembly diagram and an enlarged view of a main part of the projector device.

FIG. 7 is a main part assembly diagram of a rotating lever portion.

FIG. 8 is an assembled view of a main part of a rotating lever unit.

FIG. 9 is a view of the lamp cover as viewed from four directions.

FIG. 10 is a view of the lamp box to which the lamp cover is attached as viewed from four directions.

FIG. 11 is a front view showing a lamp box to which a lamp cover is attached.

FIG. 12 is a top view of a lamp box to which a lamp cover is attached.

FIG. 13 is a diagram showing a state where the lamp box is mounted on a housing.

FIG. 14 is a diagram showing the back surface of the state where the lamp box is mounted on the housing.

FIG. 15 is a diagram showing a state in which the lamp box is mounted on a housing.

FIG. 16 is a diagram showing the back surface of the state where the lamp box is mounted on the housing.

FIG. 17 is a diagram illustrating a state where a lamp cover is removed from a lamp box.

FIG. 18 is a diagram illustrating a relationship between a rotation lever and a detection switch.

FIG. 19 is a diagram illustrating a relationship between a shutter and a detection switch.

FIG. 20 is a view showing a lamp attachment cover.

FIG. 21 is a partial cross-sectional view showing a state in which the lamp mounting unit cover is mounted on the housing.

FIG. 22 is a view showing a state in which the lamp mounting portion cover and the lamp cover mounted on the lamp box interfere with each other.

FIG. 23 is a diagram showing a state where a lamp box provided with a holder is mounted on a housing and a lamp mounting portion cover is mounted.

FIG. 24 is a diagram showing opening and closing of a ventilation opening of a lamp box.

FIG. 25 is a diagram showing opening and closing of a ventilation opening of a lamp box.

FIG. 26 is a view showing a step of removing a conventional lamp box from a housing.

FIG. 27 is a schematic sectional view showing a configuration of a conventional liquid crystal projector device.

[Explanation of symbols]

4 lamps, 5 boxes, 6 shutters, 8
Elastic body, 9 arm, 10 hole, 11 holder, 12 D convex part, 13 convex part, 14 rotating lever, 15 elastic body, 20 handle, 22
A convex part, 23 B convex part, 24 C convex part, 25
Lock lever, 26 ventilation port, 27 elastic body, 28 handle guide, 30 ventilation port, 31
Rotating lid, 32 elastic body, 39 detection switch,
40 detection switch, 41 detection switch, 50
Housing, 51 lamp mounting part cover, 55 lock receiving part, 70 boxes, 100 lamp box,
101 Lamp box.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor ▲ Hiro ▼ Tatsuro Se 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 5C058 AB06 EA51 EA52 5C060 HD02 JA25 JB06 5G435 AA12 AA14 BB12 BB17 DD02 DD04 EE02 FF03 GG01 GG28 LL15

Claims (12)

[Claims] 1. A housing, a lamp for emitting light for magnifying and displaying an image, a box fixedly holding the lamp, and having a ventilation opening for passing air, and a slide provided on an upper portion of the box for sliding. A lamp box attached to a lamp mounting portion in the housing, the shutter box comprising a shutter means held so as to be capable of being provided; and a lamp box provided in the housing at a position in contact with the shutter means of the lamp box mounted on the lamp mounting portion of the housing. A pivoting member, and a projection that, when attached to the lamp attachment portion of the housing, abuts on the pivoting member provided in the housing and rotates the rotating member by a predetermined amount in a predetermined direction. And a lamp mounting portion cover having the following. 2. The rotating member is provided at a position where a convex portion provided on a lamp mounting portion cover comes into contact with the first rotating lever rotatably held and the shutter means. 2. The projector device according to claim 1, further comprising a second rotation lever that rotates in conjunction with rotation of the first rotation lever. 3. The switch according to claim 1, further comprising a detection switch provided at a rotation end of the rotation member to detect that the rotation member has rotated by a predetermined amount by a convex portion of the lamp mounting portion cover. Projector device. 4. The projector device according to claim 1, wherein a detection switch for detecting that the shutter slides by a predetermined amount due to the rotation of the rotation member is provided at a sliding end of the shutter means. 5. The projector device according to claim 1, wherein the convex portion of the lamp attaching portion cover is formed by bending an end of a sheet metal attached to substantially the entire back surface of the lamp attaching portion cover. 6. A housing, a lamp for emitting light for magnifying and displaying an image, a box fixedly holding the lamp, and having a ventilation opening for passing air, and a ventilation opening provided on an upper portion of the box. Shutter means slidably held to open and close the box, a lock member provided at the lower front of the box for fixing the box fixedly holding the lamp in the housing, and a lower surface of the box fixedly holding the lamp. A lamp box comprising a rotating lid rotatably mounted to open and close the provided ventilation opening; a lamp cover covering a surface of the lamp box from which light for magnifying and displaying an image is emitted; and a lamp. A projector device comprising: a box mounted on a housing; and a lock receiving portion that engages with the lock member when the lamp cover is removed from the lamp box. . 7. A lock member comprising a lock lever rotatably attached to a lower part of a front surface of the box while being urged in one direction by an elastic body. The lamp cover is provided at the lower end of the lamp cover, abuts on the end of the rotating cover provided on the lower side of the box on the rotating shaft side, and rotates the rotating cover. 7. The light-emitting device according to claim 6, comprising: a first convex portion to be moved; and a second convex portion provided at a lower end of the lamp cover and abutting on the lock lever and rotating the lock lever. Projector device. 8. The shutter means has a hole on the front side of the box, and the lamp cover is provided above a cover portion covering the front surface of the box, and comprises a claw-shaped member engaging with the hole. The projector device according to claim 6, wherein: 9. The lamp cover has a handle provided so as to connect an upper portion of a cover portion covering a front surface of the box and an upper rear portion of the box, and the handle portion is provided with a lamp mounting portion. 7. The projector device according to claim 6, wherein the projector device is located at a position higher than an upper surface of the housing when the projector device is mounted on the projector. 10. A housing, a lamp for emitting light for displaying an image, a lamp box attached to a lamp mounting portion in the housing, the lamp box comprising a box for fixing and holding the lamp; A lamp mounting part cover attached to the housing to cover the lamp mounting part; and a lamp mounting part cover provided on the upper surface of the box, and when the lamp mounting part cover is mounted on the housing, on the back side of the lamp mounting part. A projector device comprising: a holder having a fourth protrusion formed at a height substantially in contact with a surface on which the projector is located. 11. A housing, a lamp which emits light for displaying an image, a box which holds and holds the lamp, and which has a ventilation opening for passing air, and a surface of the box which is provided with an elastic body for ventilation. A lamp box that is urged in a direction to close the mouth and is rotatably provided, and a housing that comes into contact with the rotating lid when the lamp box is mounted, and A projection device provided with a projection for rotating the moving lid by a predetermined amount. 12. A lamp which emits light for magnifying and displaying an image, a box which holds and holds the lamp, and which has a ventilation opening for passing air, and which is provided on an upper portion of the box and which opens and closes the ventilation opening. Shutter means slidably held in order to perform the operation, a lock member provided at the lower part of the front of the box, for fixing the box holding and holding the lamp in the housing, and a lower surface of the box for holding and holding the lamp. A rotatable lid rotatably mounted to open and close the provided ventilation opening; a hole provided on the sliding start end side of the shutter means; a cover for covering the entire front surface of the box; A first convex portion provided at a lower end of the portion, abutting on the rotating lid, and rotating in a direction to close the rotating lid, provided at a lower end of the cover portion, abutting on the locking member,
A second convex portion for rotating the lock member in a predetermined direction, a claw-shaped member provided above the cover portion and engaged with a hole provided in the shutter means, and one end provided above the cover portion. A lamp cover comprising a handle portion attached to a rear portion of the box at the other end.