JPH065110A - Luminaire - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lighting fixture that facilitates work when the fixture cover is detached from the fixture main body. A locking latch 25 whose tip engages with the engaging portion 2 of the instrument body 1, a spring member 45 for biasing the locking latch, and an operation member 33 for retracting the locking latch.
A lock means 35 that holds the retracted state when the locking latch is retracted by this operation member, a lock release member 40 that releases the lock means when the instrument body abuts on the distal end and is retracted, and a lock release The locking tool 20 is configured by a spring member that biases the member in the protruding direction. When the locking member is retracted by the operating member and is disengaged from the locking portion of the instrument body, the locking latch engages with the locking means to prevent bulging, so that the operating member is released to release the instrument cover. Can be removed from the body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a fixture cover to a fixture main body attached to a ceiling surface in a fluorescent lamp fixture directly attached to a ceiling so as to be detachable.

[0002]

2. Description of the Related Art In the case of a ceiling-mounted fluorescent lamp fixture, a fixture body containing a ballast and the like is directly attached to the ceiling surface, and a fluorescent lamp is attached to the fixture body. Equipment covers, such as shades and gloves, that cover the fluorescent lamp are attached. The instrument cover may be detached from the instrument body for lamp replacement, lighting tube exchange, and other maintenance, inspection, and management, and is therefore detachably attached to the instrument body. In this case, if it is configured to be attached and detached using a screw or the like, there is a problem in that the attaching and detaching operation must be carried out while supporting the instrument cover having a considerable weight, and thus the work is troublesome.

Therefore, it is desired that the instrument cover can be attached with one touch when it is attached to the instrument body.
As an example thereof, a mounting structure shown in Japanese Utility Model Publication No. 56-46489 is known.

In this device, a locking tool case is attached to an opening of a device cover, and a locking latch biased by a spring member is housed in the locking tool case, and the locking latch is a collar of the tool body. It is designed to be hooked on the part to support the instrument cover. The above-mentioned locking latch has a front end downwardly tapering surface. Therefore, when the instrument cover is raised from below the instrument body, the front downward taper surface of the latching latch hits the lower edge of the collar portion of the instrument body. In this state, the tip of the locking latch rises while sliding on the peripheral surface of the flange of the instrument body in this state, and when the tip of the locking latch exceeds the flange, the locking latch is pushed by the spring member and protrudes. Therefore, due to this projection, the locking latch is hooked on the collar portion of the instrument body to support the instrument cover.

Therefore, according to such a structure, the locking latch can be locked to the instrument body only by raising the instrument cover, and the mounting operation becomes one-touch, and the workability is very good.

[0006]

However, in the above-mentioned conventional case, when the locking by the locking latch is released, the release knob connected to the locking latch is pulled to move the locking latch to the locking tool case side. The device is retracted, whereby the locking latch is separated from the collar portion to release the instrument cover from the instrument body, and in this state, the instrument cover is removed from the instrument body. At this time, the urging force of the spring member acts on the locking latch to constantly press the locking latch in the forward direction, and the release knob locks against the urging force of the spring member. The latch can be retracted.

However, in such a case, it is necessary to remove the instrument cover from the instrument main body while maintaining the state in which the release latch is pulled and the locking latch is retracted. It was necessary to pull down while supporting the equipment cover with one hand, and the removal work of the equipment cover was troublesome.

The present invention has been made in view of the above circumstances, and an object thereof is to maintain the disengagement of the locking latch without pressing it by hand when removing the instrument cover. Therefore, it is an object of the present invention to provide a luminaire that can be removed and that facilitates the work of removing the luminaire cover.

[0009]

In order to achieve the above-mentioned object, the present invention has an instrument body to which a lamp is attached and which is provided with an engaging portion, and an instrument which is detachably attached to the instrument body and covers the lamp. A cover and a plurality of locking members provided on the device cover and releasably locked to the engaging portion of the device body, and these locking devices are locked to the device cover. A tool case, a locking latch that is housed in the locking tool case and is capable of projecting toward the instrument body, and the projecting tip end surface is locked to the engaging portion of the instrument body when projecting; Engagement between a spring member housed in the stopper case and biasing the locking latch toward the tool body, and the spring member connected to the locking latch and retracting the locking latch to the engaging portion of the tool body. The operation member for releasing the engagement and the locking member case provided in the case. And locking means for holding the detent in the retracted position when the locking latch is retracted by the operation member,

A lock releasing member which is provided in the locking tool case and is capable of projecting toward the instrument main body, and which releases the locking means when the instrument main body comes into contact with the tip and is retracted, and the lock releasing member. And a spring member for constantly urging the member in the protruding direction.

[0011]

According to the present invention, when the instrument cover is lifted for mounting, the tip of the lock releasing member comes into contact with the instrument body and the lock releasing member is retracted, thereby releasing the locking means. The locking latch receives the force of the spring member and projects toward the instrument body. Then, when the tip of the locking latch is locked to the engaging portion of the instrument body, the instrument cover can be supported by the instrument body by the engagement of the locking latch. Further, when removing the instrument cover from the instrument body, when the locking latch is retracted by the operating member, the locking latch is locked by the locking means at the retracted position, and thus the operating member is released to the retracted position of the locking latch. Is retained.
For this reason, it is not necessary to hold the locking latch in a retracted state by hand, and one hand is free, which facilitates removal of the instrument cover.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. This embodiment shows a case of a ceiling-mounted ring-type fluorescent lamp fixture, and FIGS.
In the above, reference numeral 1 is an instrument body, and 10 is an instrument cover.

The instrument body 1 includes a disc-shaped chassis portion 2 and
The ballast accommodating portion 3 formed in the central portion of the chassis portion 2
Is equipped with. A side wall 4 extending downward is formed on the peripheral edge of the chassis portion 2. A ballast 5 is housed in the ballast housing portion 3, and an upper portion of the ballast housing portion 3 projects above the chassis portion 2. Ballast housing 3
The upper surface of the chassis is attached to the ceiling surface 6 of the building. Therefore, between the upper surface of the chassis portion 2 and the ceiling surface 6, a gap 7 corresponding to the protruding height of the ballast housing portion 3 is formed. Are formed. In the case of this embodiment, this gap 7 serves as an engaging portion. A ring-shaped fluorescent lamp 9 is attached to the lower surface of the chassis portion 2 via hooks 8 made of elastic metal pieces.

The lower surface of the instrument body 1 is covered with an instrument cover 10. The instrument cover 10 is a globe made of light-diffusing glass or translucent synthetic resin, and in the case of the present embodiment, it is a glove for covering the fluorescent lamp 9. The instrument cover 10 has a neck 11 fitted into the side wall 4 of the instrument body 1 and a shoulder 12 continuous with the neck 11. For example, two engaging members 20 are attached to the shoulder portion 12 so as to be spaced apart from each other in the circumferential direction. These locks 20 will be described with reference to the drawings starting from FIG.

The locking tool 20 has a locking tool case 21 fixed to the instrument cover 10, and the locking tool case 21.
Is covered by a lock cover 22. Both the locking tool case 21 and the locking tool cover 22 are fixed to the instrument cover 10 with screws 23.

Located in the locking case 21 on the left and right,
A pair of locking latches 25, 25 are housed. The locking latches 25, 25 are connected by the rotary connecting portions 26, 26 and the central connecting portion 27, and the whole is continuous in a substantially M shape (when the locking latches 25, 25 are retracted). In the case of the present embodiment, the locking latches 25, 25, the rotation connecting portions 26, 26, and the central connecting portion 27 are integrally molded of synthetic resin, and these connecting portions are self-hinge portions 28 ... There is. The tip ends of the locking latches 25, 25 are inserted through the insertion hole 2 formed in the front surface of the locking tool case 21.
It is possible to project from 9 and 29, and taper surfaces 30 and 30 that are inclined upwards along the forward direction are formed on the projecting tip surfaces, respectively.

Supporting pins 31, 31 are provided in the middle of the pivotal connecting portions 26, 26 connected to the left and right locking latches 25, 25, and these supporting pins 31, 3 are provided.
1 is rotatably supported in support holes 32 ... Formed in the locking tool case 21 and the locking tool cover 22, respectively.
The supporting holes 32 ... Have an oval shape or an elliptical shape extending in a direction orthogonal to the projecting direction of the locking latches 25, 25. Therefore, the rotation connecting portions 26, 26 have supporting holes 32.
It can be freely rotated in the direction of the long hole or the elliptical hole. An operation knob 33 as an operation member is connected to the central connecting portion 27, and the operation knob 33 projects rearward from the rear surface of the locking tool case 21. When the operation knob 33 is pushed in, the rotary connecting portions 26, 26 are brought into contact with the support pins 31, 31.
The locking latches 25, 25 on the left and right rotate from the insertion holes 29, 29 of the locking tool case 21 to the locking tool case 2
It is designed to retract into 1.

A lock projection 35 is provided on the bottom surface of the locking tool case 21 at a substantially central portion. The lock projection 35 has a triangular shape whose rear surface is inclined downward. When the operation knob 33 is pushed forward, the central connecting portion 27 is pushed forward, and the central connecting portion 27 advances while sliding on the rear inclined surface of the lock projection 35. As a result, the rotary connecting portions 26, 26 are connected to the support pins 31, 31.
The left and right locking latches 25, 25 are retracted into the locking device case 21 by rotating about the center of the locking projection 35, but the central connecting portion 27 slides over the rear inclined surface of the locking projection 35 to the front side. When it reaches, the central connecting portion 27 has the locking projection 35.
The central connecting portion 27 is caught on the locking projection 35 and is prevented from moving rearward by falling down in front of the central connecting portion 27. That is, when the central connecting portion 27 is locked to the lock protrusion 35, the left and right locking latches 25, 2
5 is locked and is prevented from projecting forward.

Corresponding to the lock projection 35, a lock releasing slider 40 as a lock releasing member is provided in the locking device case 21 so as to be slidable back and forth. The unlocking slider 40 has a tip protruding and retractable from a through hole 41 formed in the front surface of the locking tool case 21, and the tip surface is a curved surface 42 curved up and down. It is adapted to slide on the side wall 4 of the main body 1.

The rear end portion of the unlocking slider 40 has an inclined surface 43 that descends rearward. This inclined surface 4
When the unlocking slider 40 moves rearward, the sliding contact with the lower surface of the central connecting portion 27 causes the central connecting portion 27 to be picked up.
7 is lifted higher than the lock protrusion 35
To get over and thus unlock.
A notch 44 is formed in the center of the rear end of the unlocking slider 40 so as to avoid the lock protrusion 35 and move.

The lock releasing slider 40
And a coil spring 45 is stretched between the center connection portion 27 and the center connection portion 27. The coil spring 45 pushes the lock releasing slider 40 forward and pushes the central connecting portion 27 backward, so that the biasing force of the lock releasing slider 40 in the protruding direction and the locking latch 2 are applied.
It also serves as a pressing force in the protruding direction of Nos. 5 and 25. Reference numeral 46 is a stopper that regulates the retracted position of the central connecting portion 27.

The operation of the attachment structure of the instrument cover having such a structure will be described. 3 (A) and (B)
The instrument cover 1 is attached to the instrument body 1 attached to the ceiling surface.
0 is attached from below, and the instrument cover 1
When 0 is separated from the lower part of the instrument body 1, the locking tool 20 is in the state shown in FIGS. 2 (A) and 3 (A), respectively. That is, in this state, there is nothing that hinders the protrusion of the unlocking slider 40, so the unlocking slider 40 is pushed by the coil spring 45, and the curved surface 42 projects from the through hole 41 of the locking tool case 21. There is. Further, in this case, the operation knob 33 is pushed in, the left and right locking latches 25, 25 are retracted from the insertion holes 29, 29 of the locking tool case 21 into the locking tool case 21, and the central connection is made. The part 27 is pushed forward and caught by the lock projection 35, and is prevented from moving rearward.

When the instrument cover 10 is raised in this state and the neck 11 of the instrument cover 10 is inserted into the inside of the side wall 4 of the instrument body 1, the locks are released from the lock case 21 of each lock 20. The curved surface 42 of the slider 40 contacts the side wall 4 of the instrument body 1, and the lock releasing slider 40 is pushed against the biasing force of the coil spring 45. When the unlocking slider 40 retreats, the rearwardly sloping inclined surface 43 formed on the rear end of the central connecting portion 27.
The central connecting portion 27 is slid up and pushed up by sliding on the lower surface of the. As a result, the central connecting portion 27 comes over the lock protrusion 35, and the lock is released. As a result, the central connecting portion 27 is pushed later against the biasing force of the coil spring 45, and by the backward movement of the central connecting portion 27, the rotary connecting portions 26, 26 rotate about the support pins 31, 31. Therefore, the left and right locking latches 25, 25
Is advanced. Therefore, the leading ends of the locking latches 25, 25 have the insertion holes 2 formed in the front surface of the locking tool case 21.
The tapered surfaces 30 and 30 protruding from the projections 9 and 29 and formed at the protruding tips enter the gap 7 between the chassis portion 2 of the instrument body 1 and the ceiling surface 6. Since the locking latches 25, 25 are moved forward by the biasing force of the coil spring 45, the gap 7
The tip tapered surfaces 30 and 30 that have entered the position are locked to the chassis portion 2, so that the locking tools 20 ... Therefore, the instrument cover 10 can be attached to the instrument body 1.

To disengage such an engagement, push in the operation knob 33 of each locking member 20 ...
Is pushed forward, and the rotation connecting portions 26, 26 are connected to the support pins 31,
Rotate around 31 to lock the left and right latches 25, 25
Is pulled into the locking tool case 21 through the insertion holes 29 of the locking tool case 21. At this time, the central connecting portion 27 moves forward while sliding on the rear inclined surface of the lock projection 35 and slips over this inclined surface, and is caught by the lock projection 35. Therefore, the left and right locking latches 25, 25 are locked, and the front Is prevented from protruding.

Therefore, the locking latch 25 is attached to the chassis portion 2.
Retracts from the gap 7 between the ceiling surface 6 and the ceiling surface 6,
Are disengaged from the instrument body 1. Therefore, the instrument cover 10 can be lowered and removed.

In the case of such a structure, when the instrument cover 10 is attached to the instrument body 1, the slider 40 for unlocking is used.
When the curved surface 42 of the device contacts the side wall 4 of the device body 1 and is pushed, the lock is released and the left and right locking latches 25, 2
5 automatically moves forward, so the instrument cover 10
There is no need to perform a special operation when attaching the device, and a simple operation of simply pushing up the instrument cover 10 is sufficient.

When the instrument cover 10 is removed from the instrument body 1, when the operation knobs 33 of the respective fasteners 20 ... Are pushed in to retract the latches 25, 25 from the chassis 2, the latches 25, The forward movement of the central connecting portion 25 is blocked by the central connecting portion 27 being caught by the lock projection 35. Therefore, even if the operator releases the operating knob 33, the locking latch 25,
25 does not move forward, so operation with one hand 33
You don't have to keep pressing and you will have one hand free.
As a result, when the instrument cover 10 is removed, both hands can be used freely, which facilitates the removal work and improves work efficiency. Because of this, the instrument cover 10 can be easily attached and detached.

Moreover, in the case of this embodiment, the locking latch 2
Since the tip projecting surfaces of 5 and 25 are tapered surfaces 30 and 30 which incline upward toward the front, even if not all of the latch latch 25 in the height direction enters the gap 7, the tip tapered surfaces 30 and 30.
It is possible to engage with the chassis portion 2 by receiving the biasing force of the coil spring 45 only by intruding a part of the gap 7 into the gap 7.
Therefore, the gap 7 between the chassis portion 2 and the ceiling surface 6 does not need to be larger than the height of the locking latch 25, and even if the gap 7 is smaller than the height of the locking latch 25. Can be locked. Therefore, since the gap 7 can be made small, the fixture body 1 can be installed close to the ceiling surface 6, and the lighting fixture does not significantly project from the ceiling surface. The present invention is not limited to the structure of the above embodiment.

That is, in the above embodiment, the coil spring 45 pushes the lock releasing slider 40 forward and pushes the central connecting portion 27 backward, so that the biasing force of the lock releasing slider 40 and the latching latch. Although the pressing biases of 25 and 25 are also used, the pressing biases of the lock releasing slider 40 and the locking latches 25 and 25 are also used.
The pressing and urging may be performed by separate coil springs.

In the case of the above embodiment, the locking latch 2
Since the tip tapered surfaces 30 and 30 of the grooves 5 and 25 enter the gap 7 between the chassis portion 2 and the ceiling surface 6 to support the instrument cover 10, the upper surface of the chassis 2 forming the gap 7 is engaged. However, the present invention is not limited to this, and, for example, an engaging hole or engaging groove is formed in the side wall 4 connected to the chassis 2, and the engaging latches 25, 25 are formed in this engaging hole or engaging groove. You may make it support the instrument cover 10 by making the taper surfaces 30 and 30 formed in the front end enter. Even in this case, the size of the engagement hole can be reduced by making the tip projecting surfaces of the locking latches 25, 25 taper surfaces 30, 30 that are inclined upward toward the front.

Further, the front end surfaces of the locking latches 25, 25 are not limited to the taper surface 30 inclined forward and upward,
It may be configured as in another embodiment shown in FIG. That is, in the case of FIG. 7, a front downward taper surface 70 is formed on the upper surface of the chassis portion 2 serving as the engagement portion, and the taper surface 70 engages with the engagement latch 25. In such a case, since the tapered surface 30 is not formed on the locking latch 25, the height dimension of the locking latch can be reduced, and the locking tool 20 can be made thin as a whole. Note that such a front-down taper surface may be applied when the engagement hole or the engagement groove is formed in the instrument body 1.

[0032]

As described above, according to the present invention, when the tip of the lock releasing member abuts the instrument main body when the instrument cover is raised, the lock releasing member is retracted and the locking means is released. Since the stop latch receives the force of the spring member and projects toward the instrument body, and the tip portion thereof engages with the engaging portion of the instrument body, the instrument cover can be supported by the instrument body. Therefore, the instrument cover can be attached to the instrument body only by raising the instrument cover. Also, when removing the instrument cover from the instrument body, when the locking latch is retracted by the operating member, this locking latch locks to the locking means at the retracted position, so that even when the operating member is released, the locking latch is in the retracted position. Since it is not necessary to always hold the state where the locking latch is pushed by hand since it is supported by, one hand becomes free, and removal of the instrument cover becomes easy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a locking tool showing an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the same embodiment in an assembled state, (A) showing a state in which the locking latch is retracted,
FIG. 7B is a diagram showing a state in which the locking latch is advanced.

3A and 3B are longitudinal sectional views of the same embodiment, FIG. 3A showing a state in which the locking latch is retracted, and FIG. 3B showing a state in which the locking latch is advanced and engaged with the instrument body. Illustration.

FIG. 4 is an exploded perspective view of a device body and a device cover in the same embodiment.

FIG. 5 is a cross-sectional view showing a state in which the instrument body and the instrument cover are assembled in the embodiment.

FIG. 6 is an enlarged cross-sectional view of the main part of FIG.

FIG. 7 is an enlarged sectional view of a main part showing another embodiment of the present invention.

[Explanation of symbols]

1 ... Instrument main body, 2 ... Chassis part, 3 ... Ballast accommodating part, 4
... Side wall, 9 ... Fluorescent lamp, 10 ... Instrument cover, 20 ...
Locking tool, 21 ... Locking tool case, 25 ... Locking latch, 26
... Rotational connection part, 27 ... Central connection part, 28 ... Self-hinge part, 30 ... Tapered surface, 33 ... Operation knob, 35 ... Lock protrusion, 40 ... Lock release slider, 42 ... Curved surface, 43
... inclined surface, 45 ... coil spring.

Claims (3)

[Claims] 1. An instrument main body on which a lamp is mounted and which is provided with an engaging portion, an instrument cover which is detachably attached to the instrument main body and covers the lamp, and an instrument main body provided on the instrument cover and associated with the instrument main body. And a locking member that is releasably locked to the joint portion, and these locking members are housed in the locking device case fixed to the device cover and the locking device case. A locking latch that allows it to project toward the main body, and the projecting tip end is locked to the engaging portion of the device body when it projects, and is housed in the locking tool case, and the locking latch faces the device body. Provided in the locking device case; and a spring member that presses and urges the locking member, an operating member that is connected to the locking latch and that retracts the locking latch to release the engagement with the engaging portion of the instrument body. And the locking latch was retracted by the operating member. Locking means for holding the locking latch in the retracted position, and provided in the locking tool case so as to be able to project toward the instrument body, and when the instrument body contacts the tip and is retracted, A lighting device comprising: a lock releasing member for releasing the locking means; and a spring member for constantly urging the lock releasing member in the protruding direction. 2. A single spring member serves as both a spring member for projecting the locking latch toward the instrument body and a spring member for constantly urging the lock releasing member in the projecting direction. The lighting fixture according to claim 1. 3. The taper surface inclined forward and upward on the lower surface of the protruding tip of the locking latch, or the taper surface inclined downward and frontward on the upper surface of the engaging portion of the instrument body. The luminaire described in.