JPH09245513A - Shade fitting structure for luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct the detaching work of a shade even by a single worker quickly and easily regardless of the shape of the fitting portion of a luminaire main body and the portion to be fitted of the shade to be fitted as downsizing a luminaire, and suppressing the play of the shade at a shade mounting time. SOLUTION: A portion to be engaged 2 which engages with an engaging portion 1 provide in a luminaire main body A and blocks the fitting breakaway of a shade B is provided in the shade B which is fitted into the luminaire main body A so as to be free in detaching and attaching. At least one portion of a fitting portion 3 of the luminaire main body A is so formed as the portion to be engaged 2 is free in moving to an engagement release position where the same is broken away from the engaging portion 1 with the push operation by the shade B in a fitting state of the portion to be fitted 4 of the shade B to the fitting portion 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device in which a shade is detachably fitted to an instrument body, and the shade is engaged with a locking portion provided on the instrument body so that the shade can be detached from the instrument body. The present invention relates to a shade mounting structure for a lighting device provided with a locked portion for blocking.

[0002]

2. Description of the Related Art Conventionally, as a shade mounting structure for a lighting fixture, a fitting part of the fixture body and a fitting part of the shade are formed in an oval shape which cannot be relatively rotated when fitted in a vertical direction. In the fitting part of the shade, at each of the two left and right side portions along the longitudinal direction, an inverted V-shaped hook provided at two locations of the appliance body opposed to the two. A locking recess that is detachable from the spring is formed, and two portions of the other side portion of the fitted portion of the shade are provided at two locations of the instrument body facing each other. In addition, a swingable locking piece and a disengageable locked portion are provided. In addition, a spring member is provided to elastically project and urge each of the locking pieces outwardly, and each of the locking pieces has a fulcrum at which the shade is locked with a hook spring on the instrument body side. When the rocking operation is performed on the instrument body side, the locking piece is retracted and rocked to the non-locking position against the elastic biasing force of the spring member in accordance with the contact of the shade with the locked portion. The inclined cam surface to be formed is formed with a locking surface for locking the shade by coming into contact with the locked portion of the shade. When a predetermined or more external force acts in the detaching direction, the locking piece is configured to retreat and swing to the non-locking position against the elastic biasing force of the spring member. (See, for example, JP-A-6-150711.) The fitting portion of the tool body and the fitted portion of the shade are formed in a non-circular shape that cannot be rotated relative to each other when fitted in a vertical direction. At each of the plurality of shade fitting portions of the main body, a locking piece detachable from a locked portion formed at a plurality of fitted portions of the shade facing each other, A spring member for elastically urging the stop piece outward and a push-in operating tool for retracting the locking piece to the unlocked position against the elastic urging force of the spring member are provided, In each of the locking pieces, when the shade is fitted to the appliance body side, the locking pieces are opposed to the elastic biasing force of the spring member with the contact of the shade with the locked portion. The shade is prevented from coming off by the contact between the inclined cam surface that retreats to the unlocked position and the locked part of the shade. And a locking surface for locking. (For example, refer to JP-A-60-44903)

[0003]

According to the conventional shade mounting structure, when the shade is to be detached from the fixture body for lamp replacement or cleaning, an operating force for fitting and disengaging (withdrawal direction) is applied to the shade. Then, the locking piece provided on the instrument body side is retracted to the non-locking position against the elastic biasing force of the spring member, and the shade is hung with the hook spring provided on the instrument body side as a fulcrum. After swinging to a posture,
Since the engagement between each hook spring and the locking recess on the shade side must be released, much work is required to remove the shade. Also, according to the latter conventional shade mounting structure, when the shade is removed from the instrument body for lamp replacement, cleaning, etc., a plurality of pushing operation tools are simultaneously pushed in with fingers holding the shade, and the instrument body side is operated. Must be retreated to the unlocked position against the elastic biasing force of the spring member.
The work of removing the seeds tends to be complicated. In particular, there is a problem that the longer the fluorescent lamp attached to the apparatus main body becomes, the more workers are required to remove it.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the size of a lighting fixture and to suppress rattling of a shade when the shade is mounted.
Regardless of the shape of the fitting part of the fixture main body and the shape of the part to be fitted with the shade to be fitted thereto, the shade mounting structure of the lighting fixture which allows quick and easy removal of the shade by one person. The point is to provide.

[0005]

According to a first aspect of the present invention, there is provided a characteristic feature of a shade mounting structure for a lighting fixture, wherein a shade provided on the fixture body is removably fitted to the fixture body. A locked portion that engages with a portion to prevent fitting and disengagement of the shade, and at least part of the fitting portion of the instrument body is fitted to the fitting portion of the shade. It is configured such that it can be moved to a locking release position where the locked portion separates from the locking portion in accordance with the pushing operation by the shade in the above state. According to the above feature configuration, when removing the shade from the appliance body for lamp replacement or cleaning,
When the shade fitted to the fitting portion of the instrument body is moved to the movable portion side of the instrument body in the fitted state,
Since the movable part of the instrument body moves with the pushing operation by the shade and the locked part on the shade side is disengaged from the locking part on the instrument body side to the unlocked position, the shade is extracted from the instrument body. Can be. In addition, since at least a part of the fitting portion of the appliance main body is configured to be movable, for example, when the fitting portion of the shade is fitted to the fitting portion of the appliance main body, the fitting on the shade side is performed. Compared to the case where the locking portion is configured to allow relative movement to the unlocking position where the locking portion is disengaged from the locking portion on the instrument body side, the shade is larger than necessary than the instrument body. Further, rattling of the shade mounted on the instrument body can be suppressed. Therefore, regardless of the shape of the fitting portion of the fixture body and the fitting portion of the shade fitted to the fixture, the shade can be used while reducing the size of the lighting fixture and suppressing the rattling of the shade when the shade is mounted. Can be quickly and easily performed by a single person.

According to a second aspect of the present invention, there is provided a lighting fixture having a shade mounting structure in which a fitting portion of the lighting device main body and a fitted portion of the shade are relatively non-rotatable in a fitted state. It is in the point. According to the above-mentioned characteristic configuration, even when there are a plurality of types of lighting fixtures having different shapes of the fitting part of the fixture body and the fitting part of the shade, the shade of each lighting fixture can be quickly operated in the same operation procedure. Can be easily removed.

According to a third aspect of the present invention, there is provided a lighting fixture having a shade mounting structure, wherein return biasing means for biasing a movable portion including at least a part of a fitting portion of the lighting device body is provided. On the point. According to the above-mentioned characteristic configuration, the movable portion of the instrument body returns to the original position when the shade is removed, so that there is no need to return the movable portion and the operation can be simplified.

According to a fourth aspect of the present invention, a feature of the shade mounting structure for a lighting fixture is that a movable portion including at least a part of a fitting portion of the fixture main body is formed at a plurality of locations on the fixture main body. It is in. According to the above-mentioned characteristic configuration, since the shade is removed in a plurality of directions, it is possible to reduce the occurrence of mess in the operation of the shade at the time of removing work, and temporarily, one of the plurality of movable parts of the appliance body. Even when there is another object near the movable part, the shade can be removed using the other movable part. Therefore, the work of removing the shade can be performed more quickly and easily.

According to a fifth aspect of the present invention, there is provided a lighting fixture with a shade mounting structure, wherein the locking portions are provided at a plurality of locations on the lighting device main body, and each of the locking portions is
A locking piece elastically protruded toward the locked portion of the shade in the fitted state is provided, and the locking piece is engaged with a shade that is fitted to the instrument body side. The shade is prevented from coming off by the contact between the inclined cam surface that retreats the locking piece to the non-locking position against the elastic urging force in accordance with the contact with the locking portion and the locked portion of the shade. The point is that a locking surface for stopping is formed. According to the above-mentioned characteristic configuration, when the shade is mounted on the appliance main body, a plurality of locks provided on the appliance main body side in accordance with the fitting operation of the fitted portion of the shade with the fitting portion of the appliance main body. After each of the pieces is retracted to the non-locking position against the elastic urging force, the pieces are again protruded to the engagement position by the elastic urging force, and are fitted at the locking surfaces of the locking pieces. Lock. Therefore, regardless of the shape of the fitting portion of the appliance body and the shape of the fitted portion of the shade to be fitted thereto, it is possible to mount the device with a one-touch operation of merely pushing and inserting the shade into the appliance body. Since the shade can be removed only by moving the shade to the movable part side of the instrument body as described above, the work of attaching and detaching the shade can be performed quickly and easily even by one person.

According to a sixth aspect of the present invention, there is provided a lighting fixture in which a movable portion including at least a part of a fitting portion slides on a fixed frame having a lamp socket. The present invention is characterized in that the movable frame body is constituted by a movable frame body which can move freely, and a movement range regulating means for regulating a sliding movement range of the movable frame body with respect to the fixed frame body is provided. According to the above-mentioned characteristic configuration, when removing the shade from the appliance main body, it is only necessary to move the shade to the movable frame body side of the appliance main body to the position restricted by the movement range restricting means. It is not necessary to check one by one whether or not the stopper is detached from the locking part on the instrument body side, and the simplification of the shade removing operation can be facilitated.

According to a seventh aspect of the present invention, a shade mounting structure for a lighting fixture is characterized in that the movable top slides on the movable frame along a fixed top plate and a fixed fitting portion of the fixed frame. A movable fitting portion is provided, and in a state where the fitted portion of the shade is fitted to the fitting portion of the device main body, the movable top portion of the fixed frame body and the end of the fixed fitting portion are movable. The point is that the movable ceiling plate and the end of the movable fitting portion of the frame body are configured to overlap.
According to the above-described feature configuration, in order to speed up and facilitate the work of removing the shade, while a part of the frame on the instrument body side is configured to be movable, the frame is fixed when the shade is mounted on the instrument body side. Since the ends of the movable top plate and the movable fitting portion of the movable frame body are overlapped with the ends of the fixed top plate and the fixed fitting portion of the frame body, insects from between the fixed frame body and the movable frame body. Etc. can be suppressed.

[0012] According to a eighth aspect of the present invention, the shade mounting structure for a lighting fixture is characterized in that the return biasing means is constituted by a coil spring, and the coil spring is connected to the movable frame member and the fixed frame member. Between the two top plates in a parallel or almost parallel posture. According to the above-mentioned characteristic configuration, for example, as compared with a case where the coil spring is stretched between the movable frame body and the fixed frame body in an inclined posture intersecting with the both top plates, The stiffness between the movable frame body and the fixed frame body is reduced, and the pressing and moving operation of the movable frame body by the shade can be performed smoothly.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A shade mounting structure for a lighting fixture shown in FIGS. 1 to 5 is a synthetic resin shade B which is removably fitted in a fixture body A mounted on a ceiling surface or the like from above and below. In addition, a plurality of locked portions 2 that engage with a plurality of locking portions 1 provided on the instrument body A to prevent the shade B from being disengaged are formed. 3 and the fitting portion 4 of the shade B are formed in an oval shape, which is an example of a shape (non-circular shape) that cannot be relatively rotated in the fitted state, and at least the fitting portion 3 of the instrument main body A is formed. Part of 3B
Is pressed by the shade B in the horizontal direction in a state in which the fitted portion 4 of the shade B is fitted to the fitting portion 3, and each of the locked portions 2 It is configured to be freely movable to an unlocked position where it is simultaneously detached from the part 1.

The mounting frame C made of sheet metal of the instrument body A is a fixed frame body C1 which is screwed to a ceiling surface or the like.
And a movable frame C2 constituting a movable portion including at least a part of the fitting portion 3 of the appliance body A, only by sliding movement along a horizontal direction (a lamp axis direction of a fluorescent lamp 5 described later). It is configured by fitting. Further, a return urging means D for urging the movable frame C2 to return to the shade mounting position, and a movement range regulating means E for regulating a sliding movement range of the movable frame C2 with respect to the fixed frame C1 are provided. A lamp socket 6 for holding the two straight tube-shaped fluorescent lamps 5 in a detachable horizontal position along the longitudinal direction of the mounting frame C; Lighting control device (not shown) for turning on / off 5 in a predetermined order
And an electrical equipment box 7 for interior.

The fixed frame body C1 includes a fixed top plate 8 having one end edge formed in a semicircular arc shape in the lamp axis direction (longitudinal direction), and a plate extending downward from an outer edge of the fixed top plate 8. And a fixed fitting portion 3A
The movable frame body C2 has a movable top plate 9 having one end formed in a semicircular arc shape in the lamp axis direction (longitudinal direction), and a plate-like movable plate extending downward from an outer edge of the movable top plate 9. And the fitting portion 3B.
A and 3B constitute the fitting portion 3 of the instrument body A.

An L-shaped mounting plate 10 to which the lamp socket 6 is mounted is fixed to both sides of the fixed top plate 8 of the fixed frame body C1 in the lamp axis direction, and the movable frame body C2 The movable top plate 9 is formed with a notch 9a that allows one of the mounting plates 10 to enter into the relative movement range of the fixed frame body C1 and the movable frame body C2. The fixed frame body C1
The movable frame body C is provided on the lower edge side of the fixed fitting portion 3A.
Sliding guide portion 3 having a cross section L for guiding the lower end edge of the movable fitting portion 3B along the lamp axis direction slidably.
a is formed by bending, and each of the left and right sides near the other end of the fixed top plate 8 of the fixed frame body C1 is provided with the notch 9a of the movable top plate 9 of the movable frame body C2. On the other hand, a sliding guide member 11 having an L-shaped cross section is fixed to guide the inner edge 9b facing the left and right direction along the lamp axis direction so as to be slidable.

Each of the pair of left and right tension coil springs 14 constituting the return urging means D is formed in a substantially V shape on the left and right sides of the movable top plate 9 of the movable frame body C2. In the vicinity of the fixed top plate 8 and the movable top plate 9 over the stop projection 9c and the second locking projections 10a formed by stamping in a substantially V shape on the left and right sides of the one mounting plate 10. It is stretched in a parallel or nearly parallel posture.

As shown in FIGS. 2 and 3, the locked portion 2 is made of a metal made of metal and screwed into each of two longitudinal portions on both left and right sides of the fitted portion 4 of the shade B. Each of the locked pieces 2 includes a locked piece,
During the fitting operation of the shade B to the instrument body A, the pressing cam surface 2a for abutting against the inclined cam surface 1a of the locking piece 1B described later to move the locking piece 1B to the non-locking position is provided. Is formed.

As shown in FIG. 1 and FIG. 2, the locking portion 1 is a tool body A corresponding to each locked piece 2 of the shade B.
Are provided at four positions of the fixed frame body C1 on the side, and each of the locking portions 1 is
1A of synthetic resin, which is screwed to the casing, a locking piece 1B that is movable in the left-right direction with respect to the casing 1A, and a shade B to which the locking piece 1B is fitted. A compression coil spring 1C that elastically projects and biases toward the piece 2, and further, when the shade B is engaged with the device body A side by engaging with each locking piece 1B, the engagement target The slanted cam surface 1a that retreats the locking piece 1B to the non-locking position against the elastic biasing force of the compression coil spring 1C as the stop piece 2 contacts the pressing cam surface 2a, and the shade B A locking surface 1b for locking the shade B by coming into contact with the locked piece 2 is formed. When the shade B is mounted on the instrument body A, the shade B is provided on the instrument body A side along with a fitting operation of the fitting part 3 of the instrument body A from below the fitted part 4 of the shade B. The pressing cam surface 2 of the locked piece 2 of the shade B
a, and each locking piece 1B is retreated to the non-locking position against the elastic urging force of the compression coil spring 1C, and then engaged again by the elastic urging force of the compression coil spring 1C. The projection is moved to the mating position, and the locking surface 1b of each locking piece 1B prevents the shade B from coming out downward. Therefore, irrespective of the shape of the fitting portion 3 of the appliance body A and the shape of the fitted portion 4 of the shade B fitted thereto, it is only necessary to push the shade B into the appliance body A and fit it. The shade B can be attached by one-touch operation, and the removal of the shade B can be performed only by moving the shade B to the movable frame C2 side of the appliance body A as described above. It can be done quickly and easily.

The moving range regulating means E is constituted by regulating protrusions 15 such as screws provided on the fixed top plate 8 of the fixed frame body C1 on each of the left and right sides of the movable top plate 9 of the movable frame body C2. Slot 16 in the lamp axis direction
The movable top plate 9 of the movable frame body C2 is provided with a movable frame by the two extension coil springs 14 at the left and right central portions of an inner edge facing the notch 9a from the lamp axis direction. When the body C2 returns to the shade mounting position, the stopper piece 17 that comes into contact with the one mounting plate 10 is bent. Then, as shown in FIGS. 3 and 4, when the fitting portion 3 of the instrument main body A and the fitted portion 4 of the shade B are fitted, the shade B
Is pushed to the movable frame C2 side, the maximum withdrawal position of the movable frame C2 by the shade B is regulated by the contact between one end edge of the elongated hole 16 and the regulation projection 15, and the two tension coils The return position (the shade mounting position) of the movable frame C2 by the spring 14 is regulated by the contact between the stopper piece 17 and one of the mounting plates 10. Further, in the state where the movable frame C2 is restricted in contact with the maximum withdrawal position, the locked pieces 2 on the shade B side are completely and simultaneously released from the corresponding locking pieces 1B on the fixed frame body C1 side. The unlocked position is at the unlocked position where the shade B can be pulled out by its own weight. Further, in a state where the movable frame member C2 is returned to the shade mounting position by the two tension coil springs 14, that is, in a state where the stopper piece 17 and one of the mounting plates 10 are in contact with each other, the fixed frame member C
The end portions of the movable top plate 9 and the movable fitting portion 3B of the movable frame body C2 overlap with the ends of the fixed top plate 8 and the fixed fitting portion 3A to form a gap into which insects and the like enter. Not configured.

[Second Embodiment] FIG.
3 shows a shade mounting structure for a lighting fixture in which movable parts including at least a part of the fitting part 3 are formed at a plurality of locations of the fixture main body A. That is, at least the fitting portion 3 of the device main body A
A fixed frame body C1 which is screwed to a ceiling surface or the like by two movable frame bodies C2 constituting a movable part including a part of
The two movable frame members C2 and one fixed frame member C1 are slidably fitted to and held at both ends in the lamp axis direction within a certain range. Is configured. Other configurations are the same as those of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof will be omitted. In the second embodiment, the fitting portion 3 of the device main body A and the fitted portion 4 of the shade B are formed into an elliptical shape, which is an example of a shape (non-circular shape) that cannot be relatively rotated in the fitted state. Due to the configuration, each of the two longitudinal sides of the tool main body A is configured as a movable portion (movable frame body C2), but the fitting portion 3 of the tool main body A and the shade B are fitted. In the case where the portion 4 is formed in a rectangular shape, each of the four locations on the side may be configured as a movable portion (movable frame body C2).

Third Embodiment In the above-described first embodiment, the movable top plate 9 of the movable frame C2 is provided on each of the left and right sides near the other end of the fixed top plate 8 of the fixed frame C1.
Among them, the sliding guide member 11 having a cross section L that guides the inner edge 9b facing the notch 9a from the left and right direction slidably along the lamp axis direction is fixed.
Instead of providing such a sliding guide member 11, FIG.
As shown in the figure, sliding contact guide recesses 10 are provided on both left and right sides of the mounting plate 10 to guide the inner edge 9b of the movable top plate 9 of the movable frame body C2 slidably along the lamp axis direction.
b may be implemented by forming a cut. Further, in the above-described first embodiment, the return urging means D is constituted by the pair of left and right extension coil springs 14, but may be constituted by one extension coil spring 13. Further, in the movable top plate 9 of the movable frame body C2, the movable frame body C2 is supported by the tension coil springs 14 at the left and right center portions of the inner edge facing the cutout portion 9a from the lamp axis direction. A stopper piece 17 that contacts the one mounting plate 10 when it is returned to the shade mounting position is formed by bending, and a mounting hole formed at the left and right center position of the tip end side (lower end side in the mounted state) of the stopper piece 17. 7a
And the tension coil spring 13 is fixed to the fixed top plate 8 and the movable top plate 9 over a substantially V-shaped fourth locking projection 10c formed at the left and right center position of the one mounting plate 10. It is stretched in a parallel or almost parallel posture, and thus, the stopper piece 17 and the extension coil spring 13 constitute a movement range regulating means E for regulating a sliding movement range of the movable frame body C2 with respect to the fixed frame body C1. It is. That is, when the shade B is pushed toward the movable frame C2 in a state where the fitting portion 3 of the appliance body A and the fitted portion 4 of the shade B are fitted, the shade B
The maximum withdrawal position of the movable frame body C2 is regulated by utilizing the extension limit of the extension coil spring 14. Other configurations are the same as those of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

[Fourth Embodiment] FIG. 8 shows another sliding contact guide structure of the movable frame C2 with respect to the fixed frame C1, and the movable frame C2 is attached to one mounting plate 10 of the fixed frame C1. Is formed with a through hole 10d through which the movable top plate 9 slides along the lamp axis direction. The left and right outer edges 9e of the movable top plate 9 are formed in the fixed top plate 8 of the fixed frame body C1 in the lamp axis direction. And a fourth locking projection formed on the other end of the movable top plate 9 of the movable frame body C2. One tension coil spring 12 constituting the return biasing means D is provided across 9d and a fifth locking projection 8a formed in the fixed top plate 8 of the fixed frame body C1 in a substantially V-shape. Near the fixed top plate 8 It is stretched in parallel or substantially parallel orientation in the location. The movable top plate 9 of the movable frame C2 has a pair of left and right substantially V-contacts with the one mounting plate 10 when the movable frame C2 returns to the shade mounting position by the tension coil spring 12. A movable range regulating means E for regulating the sliding movable range of the movable frame body C2 with respect to the fixed frame body C1 by using the stopper piece 21 and the tension coil spring 12 is formed by bending the stopper piece 21 having a U-shape. It is composed. That is, when the shade B is pushed toward the movable frame body C2 in a state where the fitting portion 3 of the instrument body A and the fitted portion 4 of the shade B are fitted, the movable frame body by the shade B is moved. The maximum drawing position of C2 is configured to be restricted by utilizing the extension limit of the tension coil spring 12. In the fourth embodiment, the fixed fitting portion 3A of the fixed frame member C1 and the movable fitting portion 3B of the movable frame member C2 are shaped so as to be intermittent in the outer peripheral direction of the fitted portion 4 of the shade B. Has become. That is, it is preferable that each of the fitting portion 3 of the appliance body A and the fitted portion 4 of the shade B be substantially continuous in the outer peripheral direction, but may be intermittent in the outer peripheral direction. Further, when the fitting portion 3 of the appliance body A and the fitted portion 4 of the shade B are fitted, the fitting portion 3 and the fitted portion 4 may be configured to be in close contact with each other. Further, it may be configured in a non-adhesive state (free-fit state) in which a gap is generated between the two 3 and 4. Other configurations are the same as those of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

[Fifth Embodiment] In each of the above embodiments,
The fitted part 4 of the shade B is fitted inside the fitting part 3 of the instrument body A, and the shade B is moved to the movable frame C2.
Although the movable frame body C2 is configured to move away from the fixed frame body C1 when pushed to the side, the fitting portion 3 of the instrument main body A as shown in FIGS. 9 (a) and 9 (b). On the other hand, when the engaged portion 4 of the shade B is externally fitted and the shade B is pushed toward the movable frame body C2, the movable frame body C2 is retracted into the fixed frame body C1. You may comprise. Further, in the fifth embodiment, one or a plurality of compression coil springs 19 constituting the return urging means D are interposed between the movable frame body C2 and the fixed frame body C1. Other configurations are the same as those of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

[Sixth Embodiment] The shade mounting structure for a lighting fixture shown in FIGS. 10 and 11 is configured such that the fitting portion 4 of the shade B is formed in a rectangular shape and the fitting portion 3 of the fixture main body A is formed. Are constituted by fitting projections 3A and 3B provided at four positions corresponding to the respective corners in the fitted portion 4 of the shade B,
In a state where the fitting portion 4 of the shade B is fitted from below into the fitting projections 3A, 3B of the tool body A, the tool body A
The upper end surface of the fitted portion 4 of the shade B is configured to contact the lower end surface of the side wall 23a formed by bending the periphery of the top plate 23. Then, a pair of fitting projections 3A located on one side in the short side direction of the fitted portion 4 of the shade B are fixed to the top plate 23 of the instrument body A, and the fitted portion 4 of the shade B is The pair of fitting projections 3B located on the other side in the short side direction can be used for pushing in the short side direction by the shade B in a state where the fitting part 4 of the shade B is fitted to the fitting projections 3A, 3B. Accordingly, the locked portion 2 provided on the shade B is configured to be movable with respect to the top plate 23 to an unlocked position where the locked portion 2 is disengaged from the locking portion 1 provided on the instrument body A. Each of the pair of fitting protrusions 3A that constitute a part of the fixed fitting portion (fixed portion C1) of the fitting portion 3 of the instrument body A is connected to the top plate 2.
3 and a pair of fitting projections 3B constituting a movable fitting portion (movable portion C2) of the fitting portion 3.
Are slidably fitted and held along a pair of guide members 24 having a substantially L-shaped cross section provided on the top plate 23, and the both fitting projections 3B and the top plate 23 A tension spring 25, which is an example of a return biasing means D for biasing the fitting projection 3B to the shade mounting position, is stretched in each of the positions. The locking portion 1 provided on the device main body A is swingable between a locking position and a locking release position, and is urged toward the locking position by a spring or the like. Therefore, the shade B with respect to the fitting protrusions 3A and 3B of the instrument body A
When the engaged portion 4 is fitted, the locking portion 1 is once swung to the unlocked position along with the engagement with the locked portion 2 provided on the shade B, and then locked again. Swing to position, shade B
Will be engaged with the locked portion 2. In the figure, reference numeral 5 denotes a straight tube type fluorescent lamp.

[Other Embodiments] In the above-described first to fifth embodiments, the fitting portion 3 of the appliance main body A and the fitted portion 4 of the shade B are formed into a shape that cannot be relatively rotated in the fitted state. It was formed into an elliptical shape which is an example of
The present invention is not limited to this shape, and may be formed into another non-circular shape such as a square shape or a rectangular shape, or may be formed into a circular shape. In short, the shapes of the fitting portion 3 of the appliance body A and the fitted portion 4 of the shade B are determined when the fitted portion 4 of the shade B is fitted to the fitting portion 3 of the appliance body A. What is necessary is just to be able to regulate the relative movement in the direction intersecting (for example, orthogonally) to the fitting direction, and may be continuous or substantially continuous in the outer peripheral direction, or may be intermittent in the outer peripheral direction. It may be. In the above-described first to fifth embodiments, the part 3B of the fitting part 3 of the device main body A and the top plate 9 connected to the part 3B are configured to be movable along with the pushing operation of the shade B in the fitted state. However, only the part 3B of the fitting part 3 of the device main body A is pushed by the pushed operation of the shade B in the fitted state, so that the locked part 2
May be configured to be movable to a lock release position where the lock is released from the locking portion 1. In each of the above-described embodiments, the movable portion (movable frame body) C including at least a part of the fitting portion 3 of the device main body A
2 is returned to the shade mounting position by the return urging means D, but the movable portion C2 may be frictionally held on the fixed portion (fixed frame body C1) of the instrument body A. Good. In each of the above embodiments, the locked part 2 is
However, the locked portion 2 may be formed integrally with the shade B. In each of the embodiments described above, the locking portion 1 is configured to be movable between a locking position and a locking release position and urged to move toward the locking position, and the shade B is moved from below. Although it was configured to be mounted by one-touch operation, it is not limited to this configuration, and the locking portion 1 may be configured to be fixed. When such a fixed locking portion 1 is used, when the shade B is mounted on the apparatus main body A, the shade B is mounted while the movable portion (movable frame body) C2 is moved. In this state, the shade B is moved laterally along the instrument main body, and the locked portion 2 of the shade B is engaged with the engaging portion 1 on the instrument main body A sideways. In each of the above-described embodiments, the return biasing means D is configured by a coil spring. However, any device that can return bias the movable portion C2 including at least a part of the fitting portion 3 of the instrument body A can be used. And other urging members such as leaf springs.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

FIG. 1 is a bottom view of a main part of a fixture main body showing a first embodiment of a shade attachment structure for a lighting fixture of the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view of a main part when a shade is attached.

FIG. 4 is an enlarged cross-sectional view of the main part when the shade is removed.

FIG. 5 is an enlarged perspective view of a main part.

FIG. 6 is a bottom view of a main part of a device main body showing a second embodiment.

FIG. 7 is a perspective view of a main part of a device main body showing a third embodiment.

FIG. 8 is a perspective view of a main part of a device main body showing a fourth embodiment.

FIG. 9 is a bottom view of a main part of a device main body showing a fifth embodiment.

FIG. 10 is a perspective view of an entire lighting fixture showing a sixth embodiment.

FIG. 11 is an enlarged bottom view of a main part.

[Explanation of symbols]

 Reference Signs List A appliance main body B seed C1 fixed frame C2 movable frame (movable part) D return biasing means E movement range regulating means 1 locking section 1B locking piece 1a inclined cam surface 1b locking surface 2 locked section 3 fitting Joint 3A Fixed fitting portion 3B Movable fitting portion 4 Fitted portion 6 Lamp socket 8 Fixed top plate 9 Movable top plate 12 Coil spring 13 Coil spring 14 Coil spring 19 Coil spring

Claims (8)

[Claims] 1. A shade (B) which is detachably fitted to an instrument body (A) and engages with a locking portion (1) provided on the instrument body (A) to engage with the shade (B). ) Is provided, and at least a part of the fitting portion (3) of the instrument body (A) is shaded with the fitting portion (3). With the pushing operation by the shade (B) in the state where the fitted part (4) is fitted, the locked part (2) is disengaged from the locking part (1) to the unlocked position. A shade mounting structure for lighting fixtures that are configured to be movable. 2. The fitting portion (3) of the instrument body (A) and the fitted portion (4) of the shade (B) are formed in shapes that cannot be relatively rotated in the fitted state. A shade mounting structure for the lighting fixture according to claim 1. 3. A return biasing means (D) for biasing a movable portion (C2) including at least a part of the fitting portion (3) of the instrument main body (A) to return to return. 3. The shade mounting structure for the lighting fixture according to 2. 4. The device main body (A) according to claim 1, wherein a movable portion (C2) including at least a part of the fitting portion (3) of the device main body (A) is formed at a plurality of positions of the device main body (A). Or 3
A shade mounting structure for the lighting fixture according to the above. 5. The locking portion (1) is provided at a plurality of locations on the instrument body (A), and each of the locking portions (1) is covered by the shade (B) in a fitted state. Locking part (2)
And a locking piece (1B) elastically protruded toward the tool body, and the locking piece (1B) is provided with a shade (B) fitted to the instrument body (A) side. An inclined cam surface (1a) for retreating the locking piece (1B) to a non-locking position against the elastic urging force in contact with the locking portion (2); The shade (1) according to any one of claims 1 to 4, wherein a locking surface (1b) is formed to stop and lock the shade (B) by coming into contact with the locking portion (2). Mounting structure. 6. A movable part (C2) including at least a part of the fitting part (3) of the instrument body (A) is in sliding contact with a fixed frame body (C1) having a lamp socket (6). A movable range restricting means (E) for restricting a sliding range of the movable frame (C2) with respect to the fixed frame (C1) is provided. A shade mounting structure for a lighting fixture according to claim 1. 7. A movable top plate (9) that slides along the fixed top plate (8) and the fixed fitting portion (3A) of the fixed frame body (C1) on the movable frame body (C2). And a movable fitting part (3B), and a fitting part (4) of the shade (B) is fitted to the fitting part (3) of the appliance body (A).
Are fitted to the fixed top plate (8) of the fixed frame body (C1) and the movable top plate (9) and the movable fitting of the movable frame body (C2) to the ends of the fixed fitting portion (3A). Part (3
7. The method according to claim 6, wherein the end side of B) is configured to overlap.
A shade mounting structure for the lighting fixture according to the above. 8. The return urging means (D) comprises a coil spring (12, 13, 14, 19) and the coil spring (12, 13, 14, 1).
9) Stretched between the movable frame body (C2) and the fixed frame body (C1) in a posture parallel or almost parallel to the top plates (8, 9). A shade mounting structure for the lighting fixture according to the above.