JPH0241767Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to lighting equipment used in clean rooms and the like where semiconductors and the like are manufactured.

[Background technology]

It is necessary to reduce the amount of dust inside the clean room, and therefore it is necessary to prevent dust from entering the clean room from the outside. Therefore, if people enter the clean room to replace the lamps of lighting equipment, they will bring in dust and reduce the cleanliness of the clean room, so there is a need for lighting equipment that allows lamps to be replaced from behind the ceiling. There is.

For this reason, conventionally, as shown in FIG.
A box-shaped instrument main body 82 is provided at 0, the upper surface of the instrument main body 82 is covered with a lid 86 with a lamp 84 attached to the inner surface, and a frame 88 with a light-transmitting panel is attached to the lower surface. As shown in FIG. 10, when the lid 86 is opened when replacing the lamp 84, a sheet 90 provided inside the instrument body 82 is unwound from the drum 92, thereby preventing dust from entering the instrument body 82.

However, since a gap is created between the sheet 90 and the instrument body 82, dust enters the instrument body 82 and accumulates on the inner surface of the light-transmitting panel. As described above, it is extremely difficult to remove the dust accumulated on the inner surface of the light-transmitting panel because the light-transmitting panel cannot be removed. Furthermore, there was a problem in that the accumulated dust fell into the clean room, reducing the cleanliness inside the clean room.

[Purpose of invention]

The purpose of this invention is to provide a lighting fixture that can prevent dust from entering the fixture body and that does not damage the lamp when the lid is opened.

[Disclosure of invention]

The lighting device of this invention has a main body that has a lamp storage space inside and an opening for passing the lamp on one wall, one wall of the main body is covered with a lid that can be opened and closed, and the inner surface of the lid has the lid. A lamp is provided that passes through the lamp passage opening and is housed in the main body in a closed state, and a shielding plate capable of shielding the lamp passage opening is movable along one wall surface of the main body. one end is rotatably attached to one of the lid and the shielding plate, the other end is attached to the other of the lid and the shielding plate via a connecting means, and the interlocking mechanism transmits the opening/closing operation of the lid to the shielding plate. The connecting means includes a long hole and a connecting pin movably inserted into the long hole, and the interlocking member has one of the long hole and the connecting pin, and the lid or the shielding plate has the long hole. and the other of the connecting pins, and the elongated hole has a length that allows the shielding plate to move and cover the lamp passage opening when the lamp escapes from the lamp passage opening. It is.

According to the configuration of this invention, when the lid is opened, the shielding plate moves via the interlocking member to shield the lamp passage opening, so when the lid is opened for maintenance such as replacing the lamp, dust will not enter the main body. It can prevent intrusion.

In addition, since the shielding plate shields the lamp passage opening in a state in which the lamp has escaped from the lamp passage opening, it does not prevent the lamp from passing through the lamp passage opening when the lid is opened. I have never experienced damage caused by a lamp hitting a shield.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 6. The lighting equipment of this example has the first
As shown in the figure, a main body 10 is provided which has a lamp storage space inside and has an opening 16 (see Fig. 4) for passage of lamps on one wall surface 18, and one wall surface 18 of the main body 10 is opened and closed with a lid 12. freely cover the lid 12
A lamp 14 that passes through the lamp passage opening 16 and is housed in the main body 10 with the lid 12 closed is provided on the inner surface of the lamp, and a shielding plate 20 capable of shielding the lamp passage opening 16 is provided. It is movably provided along one wall surface 18 of the main body 10, one end is rotatably attached to one of the lid 12 and the shielding plate 20, and the other end is connected to the other of the lid 12 and the shielding plate 20. an interlocking member 50 that is attached to the interlocking member 50 to transmit the opening/closing operation of the lid 12 to the shielding plate 20;
is provided, and the connecting means includes an elongated hole 56 and an elongated hole 56.
The interlocking member 50 has one of the elongated hole 56 and the connecting pin 54, and the lid 12 or the shielding plate 20 has one of the elongated hole 56 and the connecting pin 54. The long hole 56 has a length that allows the shielding plate 20 to move and cover the lamp passage opening 16 when the lamp 14 escapes from the lamp passage opening 16. The inner surface of the main body 10 is formed of a highly reflective surface, and as shown in FIG. It is fixed to the ceiling 28 with a fixing device (not shown). Further, the lower end opening of the main body 10 is closed with a light-transmitting panel 30.
The light-transmitting panel 30 has its peripheral edge supported by a frame 34 held by a mounting spring 32 in pressure contact with the main body 10, and is attached by pressing a packing 38 of a panel holding member 36 from above. In addition, frame 34
A packing 40 is also interposed between the folded portion 24 of the main body 10 and the frame 34 may be screwed to the main body 10.

On the other hand, in FIG. 1, two lamp passage openings 16 are provided on one wall surface 18 which is the upper surface of the main body 10.
(See Figure 4). Also, main body 1
A lid 12 is provided on one wall surface 18 of the housing 0 with a hinge 42 so as to be openable and closable. The lid 12 is provided with a latch 62 and a packing 64. Two lamps 14 are installed in sockets 46 attached to a socket mount 44 provided on the inner surface of the lid 12, and a ballast (not shown) is installed in the socket mount 44. Incidentally, when the lid 12 is closed, each of the pair of lamps 14 can pass through each lamp passage opening 16 provided in one wall surface 18 of the main body 10. In addition, the main body 10
A plate-shaped shielding plate 20 placed on one wall surface 18 has two openings 48 that match and overlap the lamp passage openings 16 .

Further, a mounting plate 58 is protruded from the inner surface of the lid 12, and a rod-shaped interlocking member 50 is provided with one end rotatably attached to the mounting plate 58.
A long hole 56 is provided at the other end of the interlocking member 50, extending in the longitudinal direction of the interlocking member 50. On the other hand, a mounting plate 52 is also provided upright on the shielding plate 20, and a connecting pin 54 is protruded from the outer surface of the mounting plate 52 so as to be inserted into the elongated hole 56 of the interlocking member 50. These elongated holes 56 and the connecting pin 54 constitute a connecting means. Further, a leaf spring 60 is fixedly provided to the shielding plate 20, with which the end of the interlocking member 50 comes into contact. In addition, such interlocking member 50, mounting metal plates 52, 5
8 and a leaf spring 60 are also provided on the opposite side of the main body 10 with the lamp 14 in between.

Next, the function of the leaf spring 60 will be explained in detail while explaining the operation using FIGS. 4 to 6.

First, when the lid 12 is closed, the lamp passage opening 16 and the opening 48 of the shielding plate 20 overlap, as shown in FIG. Pass through main body 1
It is stored within 0. In this state, as shown in FIG.
It is located at the end closer to the lid 12.

Next, as shown in FIG. 5, the lid 12 is opened and the connecting pin 54 moves within the elongated hole 56 to the other end until the lamp 14 comes out of the lamp passage opening 16 and the opening 48. The interlocking member 50 rotates in this manner, and the shielding plate 20 does not move.

Furthermore, when the lid is opened as shown in FIG. 6, the interlocking member 50 presses the connecting pin 54 laterally as shown in FIG. 6B, and this pressing force causes the shielding plate 20 to move laterally. , as shown in FIG.
shields the lamp passage opening 16.

Conversely, when the lid 12 is closed, the end of the interlocking member 50 hits the rising piece 60a of the leaf spring 60 (see FIG. 6B), and the leaf spring 60 quickly responds to the movement of the lid 12.
is pushed, the shielding plate 20 moves, and the opening 48 overlaps the lamp passage opening 16. Further, when the lid 12 is closed, the end of the interlocking member 50 climbs over the rising piece 60a of the leaf spring 60, and the lamp 14 is housed within the main body 10 as shown in FIG.

According to the lighting fixture configured in this way, the lid 1
2 is opened, the shielding plate 20 moves to shield the lamp passage opening 16 of the main body 10. Moreover, since the shielding plate 20 is placed on one wall surface 18 of the main body 10,
No gap occurs between the main body 10 and the shielding plate 20,
When performing maintenance such as replacing the lamp 14, remove the lid 1.
When 2 is opened, dust can be surely prevented from entering into the main body 10, and the cleanliness inside the clean room can be maintained. Further, since the lamp passage opening 16 is shielded in this way, when the lid 12 is opened, the interior of the clean room cannot be seen from behind the ceiling, making it possible to maintain the confidentiality of the production process.

Further, the elongated hole 60 becomes loose and the lamp 14 escapes from the lamp passage opening 16 and the opening 48 of the shielding plate 20, and the shielding plate 20 moves to shield the lamp passage opening 16. Moreover, lid 1
2, the interlocking member 50 hits the leaf spring 60 and immediately moves the shielding plate 20 so that the opening 48 overlaps the lamp passage opening 16. Therefore,
The shielding plate 20 does not prevent the lamp 14 from passing through the lamp passage opening 16 when the lid 12 is opened or closed, thereby preventing the lamp 14 from hitting the shielding plate 20 and being damaged.

Further, an inner packing 64 of the lid 12 is attached, and when the lid 12 is closed, this packing 64 comes into close contact with one wall surface 18 of the main body 10, improving dustproof performance.

Note that the interlocking member 50 may be provided with a connecting pin 54 and the mounting plate 52 may be provided with a long hole 56, or the interlocking member 50 and the mounting plate 58 may be connected by a connecting means consisting of a long hole and a connecting pin. You may. Furthermore, the interlocking member 50 may be directly connected to the lid 12 and the shielding plate 20 without using the attachment plates 52 and 58.

7 and 8, a protrusion 70 is provided in the elongated hole 56 of the interlocking member 50 instead of the leaf spring 60. FIG. 7 shows the lid 12 in a closed state, and FIG. 8 shows the lid 12 in an open state.

Even in this configuration, when the lid 12 is closed, the protrusion 70 pushes the connecting pin 54, and the shielding plate 20 can be moved immediately.

[Effect of idea]

According to the lighting fixture of this invention, the following effects can be obtained.

When the lid is opened, the shielding plate moves via the interlocking member to shield the lamp passage opening, thereby preventing dust from entering the main body when the lid is opened for maintenance such as lamp replacement.

Since the shielding device shields the lamp passage opening in a state in which the lamp has escaped from the lamp passage opening, it does not prevent the lamp from passing through the lamp passage opening when the lid is opened, and therefore the lamp does not pass through the lamp passage opening. I have never experienced damage from hitting a shield plate.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view of an embodiment of this invention, Fig. 2 is a side view thereof, Fig. 3 is a partial sectional view thereof, Fig. 4 is an explanatory view of its operation with the lid closed, and Fig. 5 is an explanatory diagram of the operation with the lid half open, No. 6
The figure is an explanatory view of the operation with the lid open, Figure 7 is a partial side view of the modified example with the lid closed, Figure 8 is a partial side view of the modified example with the lid open, and Figure 9 is the conventional FIG. 10 is a side view of the example with the lid closed, and FIG. 10 is a side view of the example with the lid opened. 10...Body, 12...Lid, 14...Lamp,
16...Lamp passage opening, 18...One wall surface,
20... Shielding plate, 50... Interlocking member, 54... Connection pin, 56... Long hole.

Claims (1)

[Scope of utility model registration request] A main body having a lamp storage space formed inside and an opening for passing the lamp on one wall is provided, one wall of the main body is covered with a lid that can be opened and closed, and the lamp is placed on the inner surface of the lid with the lid closed. A lamp is provided that passes through the passage opening and is housed in the main body, and a shielding plate capable of shielding the lamp passage opening is movably provided along one wall surface of the main body, and one end is connected to the lid and the other. an interlocking member rotatably attached to one of the shielding plates and having the other end attached to the other of the lid and the shielding plate via a connecting means to transmit the opening/closing operation of the lid to the shielding plate; comprises an elongated hole and a connecting pin movably inserted into the elongated hole, and the interlocking member has one of the elongated hole and the connecting pin, and the lid or the shielding plate has the other of the elongated hole and the connecting pin. and the elongated hole has a length that allows the shielding plate to move and cover the lamp passage opening when the lamp escapes from the lamp passage opening.