JPH1050125A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the cost, improve the installation precision of a shade frame, and make a luminaire thin by producing a latch apparatus from a latch having a latch claw, a biasing member, a guiding member, and an operational member. SOLUTION: At first, a shade frame 65 is lifted upward and tilting faces 48 of latch claws 47 are respectively butted to lower ends of latch claw receiving holes 60 of this appliance main body 5. Further, when the frame 65 is pushed upward, latches 71 are slid and moved while the latch apparatus mounting member upper face being set inward against coil springs 53 by the tilting faces 48 of the latch claws 47. When the latch claws 47 get over the lower ends of the outer circumferential part 7 of the main body 5, the restriction against upward movement is released and the frame 65 is moved upward. When the latch claws 47 move to the positions on the opposite to the latch receiving holes 60 of the main body 5, the latch claws 47 move outward attributed to repulsive force of the springs 53 and are engaged with receiving holes 60 of the main body 5 and the frame 65 is thus attached to the main body 5. With this structure, the number of parts are remarkably lessened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a shade frame to an instrument body by a latch device attached to the shade frame.
It relates to a removable lighting device.

[0002]

2. Description of the Related Art A conventional luminaire will be described with reference to FIGS.

[0003] Fig. 7 shows the appearance of a conventional lighting fixture. The fixture main body 5 has a thin box shape, and has a substantially rectangular and flat surface shape attached to a mounting surface (not shown) such as a ceiling. The main body 6 includes an outer peripheral edge 7 bent downward from the outer peripheral edge of the main body 6.

At the center of the lower surface of the main body 6 is mounted a ballast 10 for stably lighting the lamp.
The lamp sockets 11, 11 are opposed to each other, and are mounted in parallel between one of the outer peripheral portions 7, 7 with the. Between these lamp sockets 11, straight tube-type fluorescent lamps 12, 12 (hereinafter, referred to as "lamp") as light sources are respectively mounted.

[0005] As shown in FIG. 7A, latch devices 15, 15 are attached to the other outer peripheral edges 7, 7 so as to face the inner surfaces thereof.

As shown in FIG. 8, the latch device 15 comprises a fixed plate 16, an operating plate 23, and a coil spring 30, and the fixed plate 16 has a substantially inverted L-shaped cross section and is formed on an upper rear surface. Piece 17 and fixed plate main part 1 formed on front surface
8, and T-shaped locking holes 19, 19 are formed on both upper sides of the fixed plate main portion 18, respectively. Further, the locking hole 19 is composed of a horizontally elongated slit hole 20 at the upper part and a rectangular engaging hole 21 at the lower part.

The operating plate 23 is disposed on the back side of the fixed plate 16. The operating plate 23 has a horizontally long operating plate main portion 24, and T is formed by bending both sides of the upper end of the operating plate main portion 24 toward the near side.
The main body 24 of the operating plate 24 is formed of a U-shaped locking portion 25, and a spring locking piece 26 bent rearward at the center of the upper end of the main portion 24 of the operating plate. Further, on both sides of the operation plate main portion 24, a rectangular latch claw receiving hole 27 serving as a latch claw receiving portion,
27 are formed respectively. The T-shaped locking part 2
5 includes a hook piece 28 formed on the front side and a constricted portion 29 formed on the rear part of the hook piece 28. The hook piece 28 is formed by a T
The engagement hole 19 is formed smaller than the slit hole 20 and larger than the engagement hole 21. Also, the constricted portion 29
Are formed smaller than the engagement holes 21 of the fixing plate 16.

A method of attaching the latch device 15 to the instrument body 5 will be described with reference to FIGS.

First, after the upper surface of the fixing plate 16 is brought into contact with the main body 6 of the instrument main body 5, the fixing piece 17 of the fixing plate 16 is fixed to the back surface of the other outer peripheral edge 7 by electric welding.

Next, the coil spring 30 is inserted between the fixed plate 16 and the outer peripheral edge 7 in a state where the coil spring 30 is inserted and compressed in the spring locking piece 26 of the operation plate 23.

Then, when the operating plate 23 is lifted upward and the T-shaped engaging portions 25, 25 of the operating plate 23 are aligned with the back surfaces of the T-shaped engaging holes 19, 19 of the fixed plate 16, The resilient force of the coil spring 30 causes the operating plate 23 to move toward the near side, and the hook pieces 28, 28 of the operating plate 23 project toward the near side from the slit holes 20, 20 of the fixed plate 16.

Then, when the operation plate 23 is pulled downward, the constricted portions 29 of the locking portions 25 are fixed to the fixed plate 16.
Engagement holes 21 formed below the engagement holes 19
1 (see FIG. 10).

FIG. 7 (B) shows a shade frame 35 having a substantially rectangular opening formed at the top, and a shade (not shown) which is a light-shielding tool for preventing the light source from being directly viewed at the lower opening end. A shade holding portion 36 to be attached is formed. further,
At the center of the upper part of the seed frame 35, notched concave portions 37, 37 are formed facing each other.

The inner wall 35 in which the notch 37 is formed
As shown in FIG. 9, a latch 46 is formed to be bent from both upper ends to the front side and formed with a triangular latch claw 47 having a downwardly inclined surface 48 as shown in FIG. ing.

A through hole 45 is formed in the center upper portion of the latch 46 so as to face the cutout recess 37 of the shade frame 35. The push rod of the operating member 50 into which the coil spring 53 is inserted is formed in the through hole 45. 52 is inserted. Then, a push nut 54, which is a stopper, is press-fitted from the tip of the push rod 52, and is pushed to a position where the coil spring 53 is slightly compressed.

FIG. 10 shows a method of attaching the shade frame to the instrument body.
This will be described with reference to FIG.

When the shade frame 35 on which the latch 46 is mounted is lifted upward, the inclined surface 48 of the latch claw 47 abuts on the lower end 24a of the operating plate 23 mounted on the instrument body 5.

Further, when the shade frame 35 is lifted upward, the operating plate 23 moves along the inclined surface 48 of the latch claw 47,
It rotates clockwise, which is the direction in which the coil spring 30 is compressed. When the latch pawls 47, 47 reach a position facing the latch pawl receiving holes 27, 27 of the operation plate 23, the coil spring 3
By the repulsion force of 0, the operation plate 23 rotates counterclockwise,
The latch pawls 47 engage with the latch pawl receiving holes 27.

FIG. 1 shows a method for removing the shade frame from the instrument body.
0 will be described.

Push button 5 protruding outside shade frame 35
When 1 is pushed in against the coil spring 53, the operating plate 23 rotates clockwise while the push rod 52 also moves inward.

When the push button 51 is further pushed inward, the latch pawls 47 and 48 and the latch pawl receiving holes 27 and 2 of the operation plate 23 are pressed.
7 is released, and the shade frame 35 moves downward by this weight and can be removed from the instrument body 5.

[0022]

As described above, the conventional latching device for a lighting fixture is composed of an operating plate 23, a fixing plate 16, a coil spring 30, and a shade frame 3 mounted on the fixture body.
5, a latch 46, a coil spring 53, and a screw 4
9, 49, an operating member 50 and a push nut 54 attached to the operating member 50. Therefore, there is a problem that the number of parts is large and the cost is high.

Further, when the shade frame 35 is attached to and detached from the instrument main body 5, the latch claw receiving holes 27, 27 with which the latch claws 47, 47 of the shade frame 35 are engaged are fixed to the fixing plate 16 of the instrument main body 5.
In addition, since the latch plate 15 is formed on the operation plate 23 that operates in the clockwise and counterclockwise directions, the structure of the latch device 15 is complicated, and there is a problem that the accuracy of attaching the shade frame 35 to the appliance body 5 is deteriorated.

Further, since the latch device 15 is long in the vertical direction, there is a problem that the lighting equipment becomes thick.

The present invention has been made in view of the above points, and an object of the present invention is to provide a lighting fixture having a latch device which can reduce the cost, as well as the mounting accuracy of the shade frame, and can make the lighting fixture thinner. Make it an issue.

[0026]

In order to achieve the above-mentioned object, a lighting apparatus according to the present invention is provided with a light source mounted, a device body having a latch claw receiving portion, and a shade frame mounted with a shade covering the light source. And a latch device provided on the shade frame and having a latch claw engaged with and disengaged from the latch claw receiving portion, wherein the latch device attaches and removes the shade frame to and from the fixture main body. A latch having the latch claw mounted on a latch device mounting member formed to protrude inward from an inner wall of the shade frame; and a latch having an engagement direction in which the latch claw is engaged with the latch claw receiving portion. An urging member for urging the latch, a guide member integrally provided on the latch device mounting member, for guiding the latch in an engaging and disengaging direction, and moving the latch claw forward from outside the shade frame. And it is characterized in that and an operating member for operating in a direction detaching from the latch claw receiving portion.

In the above arrangement, when the shade frame is mounted on the instrument body, when the shade frame is pushed upward from below, the latch slides in the direction in which the coil spring contracts, and the latch claw is inserted into the latch claw receiving hole of the instrument body. When completely engaged, the coil spring slides to the original position by the repulsive force, and the mounting of the shade frame is completed.

When the shade frame is to be detached from the instrument body, the latch is pressed from the side of the shade frame to release the latch claw from the latch claw receiving hole of the instrument body, and the shade frame is removed from the instrument body. You.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Note that the same components as in the prior art will be described with the same reference numerals.

FIG. 2 shows the appearance of the appliance main body and the shade frame according to the first embodiment of the present invention. Reference numeral 5 denotes a thin box-shaped appliance main body, which has almost the same structure as that of the prior art. The main body 6 has a flat surface and is attached to a surface to be attached (not shown). The outer peripheral edge 7 is formed by bending the outer peripheral edge of the main body 6 downward.

At the center of the lower surface of the main body 6 is mounted a ballast 10 for stably lighting the lamp.
The lamp sockets 11, 11 are opposed to each other, and are mounted in parallel between one of the outer peripheral portions 7, 7 with the. further,
Between the lamp sockets 11, lamps 12, 12, which are light sources, are removably mounted.

On the other outer peripheral edge portions 7, 7, rectangular latch claw receiving holes 60, which are latch claw receiving portions, are formed to face each other.

FIG. 2 (B) shows a shade frame 65 having a substantially rectangular opening formed at the upper part, and a shade 61 (see FIG. 1) which is a light-shielding tool for preventing a light source from being directly viewed at the lower opening end. The shade holding portion 36 to which is attached is formed all around.

Further, as shown in FIG. 3, cutout recesses 37 are formed in the upper center of the shade frame 65 so as to face each other, and are vertically flat from the inner wall 65a of the shade frame 65. Planar latch device mounting member 6
6 are formed so as to protrude inward along the entire circumference. The lower end of the notch 37 and the latch device mounting member 6
6 is flush with the upper surface.

On the upper surface of the latch device mounting member 66,
The latch devices 70, 70 each including a latch 71, an operation member 80, a coil spring 53, and the like are mounted facing each other (see FIG. 2).

The latch 71 has a substantially L-shaped cross section, a substantially rectangular flat surface-shaped slide piece 72 mounted on the upper surface of the latch device mounting member 66, and a slide piece 72.
And a pressing piece 77 erected upward from the front end.

At the center of the rear end of the slide piece 72, a triangular latch claw 47 having a downwardly inclined surface 48 is erected upward. T-shaped locking holes 73 are formed at both ends of the slide piece 72 in the width direction. The T-shaped locking hole 73 is formed by a slide hole 74 formed in the front and an engagement hole 75 formed behind the slide hole 74.

At the center of the back surface of the pressing piece 77, a second spring locking piece 78 is formed so as to protrude toward the front side, facing the latch claw 47, and the second spring locking piece is formed. A rectangular through hole 76 is formed below 78.

Further, on the upper surface of the latch device mounting member 66 of the shade frame 65, T-shaped locking convex portions 67, 67 are provided on both sides of the notch concave portion 37 in order to mount the latch 71 slidably back and forth. Each of the latching projections 67, 67 is divided and projected upward.
One T-shaped locking hole 73 is attached.

On the upper surface of the latch device mounting member 66 in front of the center of the T-shaped engaging portions 67, 67, an inverted L-shaped first
The spring retaining piece 69 is erected upward.

The upper end of the T-shaped locking projection 67 has
A hook piece 68 narrower than the slit hole 74 of the T-shaped locking hole 73 formed in the latch 71 and wider than the engaging hole 75.
Is formed below the hooking piece 68.
A narrower portion 68a is formed. The height of the constricted portion 68 a is formed higher than the plate thickness of the latch 71.

The push button 81 of the operating member 80 has the notch recess 3 so as to be able to engage with the notch recess 37 of the shade frame 65.
The push button 87 has a rectangular push plate 82 formed on the rear side of the push button 87 to push the push piece 77 of the latch 71.

A method of assembling the latch device to the shade frame will be described with reference to FIG.

The slit holes 74 formed in the latch 71,
74 is a pair of locking projections 67 erected on the shade frame 65,
67 and the latch device mounting member 66
Place on top of Then, when the latch 71 is slid outward, the narrowed portion 68 a of the locking projection 67 engages with the engagement holes 75, 75 of the latch 71. The operating member 80 is inserted between the inner wall 65a of the shade frame 65 and the pressing piece 77 of the latch 71.

Finally, when the coil spring 53 is inserted and attached between the second spring locking piece 78 and the first spring locking piece 69, the latch 71 is moved by the repulsive force of the coil spring 53. It is pressed against the frame 65 side.

When the push button 81 of the operating member 80 is pushed inward, the latch 71 slides inward, and when the hand is released from the push button 81, the latch 71 repels the coil spring 53. It slides to the shade frame 65 side by force.

FIG. 1 shows a method of attaching the shade frame to the instrument body.
This will be described with reference to FIG.

First, the shade frame 65 is lifted upward, and the inclined surfaces 48, 48 of the latch claws 47, 47 respectively abut against the lower ends of the latch claw receiving holes 60, 60 of the instrument body 5, respectively.

Further, when the shade frame 65 is pushed upward, the latch 71 is brought into contact with the inclined surfaces 48 of the latch claws 47, 47.
By 48, the upper surface of the latch device mounting member 66 slides inward against the coil spring 53.

When the latch claws 47, 47 cross over the lower end of the outer peripheral edge 7 of the instrument body 5, the upward regulation is released, and the shade frame 65 moves upward. The latch pawls 47, 47 are provided with latch pawl receiving holes 60, 60
The latch claws 47, 47 move outward by the repulsive force of the coil spring 53 and engage with the latch claw receiving holes 60, 60 of the instrument body 5, respectively. It is attached to the instrument body 5.

Next, a method of removing the shade frame will be described.

A push button 81 projecting from the outer surface of the instrument body 5
When the coil spring 5 is pushed inward, the latch 71
The sliding movement of the upper surface of the latch device mounting member 66 toward the inside is performed against the latch pawls 47, 47.
Moves in the release direction from the latch claw receiving holes 60, 60 of the instrument body 5.

When the latch pawls 47 are released from the latch pawl receiving holes 60 of the instrument body 5, respectively.
The seed frame 65 moves downward by its weight, and
Can be removed from

Another attachment structure of the latch to the shade frame will be described with reference to FIG. Only the differences from FIG. 4 will be described.

Instead of the pair of T-shaped locking holes 73 formed in the latch 71, a pair of oval-shaped engaging slit holes 85 are formed in parallel.

Further, a pair of T-shaped locking projections 67 formed on the upper surface of the latch device mounting member 66 of the shade frame 65,
Instead of 67, an engagement stepped screw 90 having a pair of screw holes 95, 95 formed on the upper surface of the latch device mounting member 66 and having an engagement stepped portion 91 higher than the plate thickness of the latch 71 is used.

Note that the tip of the engagement stepped screw 90 is
A screw portion 92 that is screwed into the screw hole 95 of the shade frame 65 is formed. The diameter of the engagement stepped portion 91 of the engagement stepped screw 90 is smaller than the width of the engagement slit hole 85.

The latch 71 is assembled as shown in FIG. 5, and slides in the direction of the arrow. The method of attaching and detaching the shade frame to and from the appliance body is the same as described above, and a description thereof will be omitted. Further, the latch device 70 has been described as a configuration in which a pair of latch devices 70 are provided on both sides of the shade frame 65 as shown in FIG. 2B, but as shown in FIG. Is supported on one side by a hinge 100, and the hinge 10
The same operation and effect can be obtained even in a configuration in which the side frame 65 is open with the zero as a fulcrum.

Next, the operation of the latch device will be described.

In the above configuration, when the shade frame is attached to and detached from the appliance main body, first, when the shade frame is attached to the appliance main body, the latch is attached to the lower end of the appliance main body in which the latch claw receiving hole serving as the latch claw receiving portion is formed. When the shade frame is pushed up from below so that the inclined surfaces of the claws come into contact with each other, the latch slides in the direction in which the coil spring contracts. The repulsive force causes the latch to slide back to its original position, completing the installation of the shade frame on the instrument body.

When the shade frame is to be detached from the instrument body, the push button of the operation member attached to the outside of the shade frame is pushed inward, so that it slides inward against the coil spring. Then, the latch claw of the latch is released from the latch receiving hole of the instrument body, and the shade frame can be easily removed.

As described above, the latch device conventionally includes an operating plate, a fixed plate, a coil spring, a latch, an operating member, and the like, whereas the present invention relates to an operating member, a latch, and a coil spring. The number of components can be greatly reduced. Further, since the assembling method is simplified, the cost can be reduced.

Conventionally, an operating plate having a latch claw receiving hole for engaging with a latch claw provided on a shade frame is rotated clockwise and counterclockwise, so that it can be moved to the instrument body of the shade frame. According to the present invention, the mounting accuracy of the latch is not constant, but the latch having the latch claw only slides on the latch device mounting member of the shade frame and engages with the latch receiving hole formed in the instrument body. Because of this, the attachment accuracy of the shade frame to the appliance body is improved.

Further, in the latch device according to the present invention, the shade frame can be attached and detached only by sliding to the left and right, so that the height of the latch device can be reduced. Therefore, the lighting fixture can be made thinner.

Since the operating member of the latch device according to the present invention has a structure inserted between the inner surface of the shade frame and the pressing piece of the latch of the latch device, it is possible to increase the size of the push button of the operating member. Since it is possible, it is easy to press the latch.

Further, since the push plate can be enlarged, the latch device can be operated with a light operating force, so that the operability is good.

[0067]

As described above in detail, according to the present invention, the latch device conventionally comprises an operating plate, a fixed plate, a coil spring, a latch, an operating member and the like, whereas the present invention provides an operating member. , A latch, a coil spring, and the like, the number of parts can be greatly reduced, and the assembling method is simplified, so that the cost can be reduced.

Further, since the latch having the latch claw is merely slid onto the latch device mounting member of the shade frame and engaged with the latch receiving hole of the instrument body, the mounting accuracy of the shade frame to the instrument body is improved. Become.

Furthermore, since the shade frame can be attached and detached simply by sliding the latch device left and right, the height of the latch device can be reduced. Therefore, the lighting fixture can be made thinner.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a lighting fixture according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the lighting apparatus according to the embodiment, in which (A) is a perspective view of a lighting apparatus main body. (B) is a perspective view of a shade frame.

FIG. 3 is an exploded perspective view showing the latch device according to the embodiment.

FIG. 4 is an exemplary perspective view showing a state where the latch device according to the embodiment is attached to a shade frame;

FIG. 5 is a perspective view showing another embodiment of the above.

FIG. 6 is a sectional view showing a configuration of a lighting device according to a second embodiment of the invention.

FIG. 7 is an exploded perspective view of a lighting device according to the related art, where (A) is a perspective view of a lighting device main body. (B) is a perspective view of a shade frame.

FIG. 8 is an exploded perspective view showing a conventional latch device.

FIG. 9 is a perspective view showing a state in which a latch according to the related art is attached to a shade frame.

FIG. 10 is a cross-sectional view showing a configuration of a lighting device according to the related art.

[Explanation of symbols]

 5: instrument body, 12: lamp (light source), 47: latch claw, 53: coil spring (biasing member), 60: latch claw receiving hole (latch claw receiving portion), 61: shade, 65: shade frame, 65a ... Inner wall, 66 ... Latch device mounting member, 67 ... Latch projection (guide member), 70 ... Latch device, 71 ... Latch, 73 ... Latch hole (guide member), 85 ... Engagement slit hole (Guide member) ), 90 ... engaging stepped screw (guide member).

Claims (1)

[Claims] 1. A tool body to which a light source is attached and which has a latch claw receiving portion, a shade frame to which a shade covering the light source is attached, and a latch claw provided on the shade frame and disengaged from the latch claw receiving portion. A lighting device for attaching and detaching the shade frame to and from the fixture body by the latch device, wherein the latch device is formed on a latch device mounting member protruding inward from an inner wall of the shade frame. A latch having the latch claw mounted on the latch claw; a biasing member for biasing the latch in an engagement direction in which the latch claw is engaged with the latch claw receiving portion; A guide member for guiding the latch in the engaging and disengaging direction, and an operating member for operating the latch claw from the latch claw receiving portion from outside the shade frame. Lighting equipment characterized by the above.