JPH10162629A - Luminaire with pull switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a pull cord hardly cut and improve its fitting property and holding property by providing a tubular section having a vertically penetrating pull cord insertion hole and hook pawl sections made of an elastic body and hooked on the inner face of a reflector and a butt section formed in conformity to the V-shaped angle of the reflector at the lower peripheral end on a bushing fitted to an fitting hole at the center of the apex of the V-shaped reflector. SOLUTION: A bushing 40 made of an elastic body is constituted of a tubular section 42 having a pull cord insertion hole 41 and a butt section 43 along the taper face section 21 of a V-shaped reflector 20. A pair of hook pawl sections 44 protruded into a triangular shape are formed below the tubular section 42, and the hook pawl sections 44 can be deformed by U-shaped slit groove sections 45 on both sides and below while the upper sections serve as a fulcrum. When the bushing 40 is rotated and fitted to a bushing fitting hole 25 at the apex 24 of the V-shaped reflector 20 while being pushed upward from below, the both end corner sections 46 of the hook pawl sections 44 are brought into point contact with the back face of the taper face section 21, and there is little backlash. A pull cord is kept in contact with only the lower end section (c) of the pull cord insertion hole 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device having a built-in pull switch.

[0002]

2. Description of the Related Art For example, a lighting fixture with a pull switch which has a built-in pull switch in a ceiling-mounted lighting fixture will be described with reference to FIGS. 4 and 5. FIG.

[0003] A ceiling-mounted lighting device is a device body 15 directly mounted on a ceiling 5 and having a built-in pull switch 10, and a tapered surface portion disposed below the device body 15 and expanding in the width direction and inclined in opposite directions. A V-shaped reflector 20 having a substantially V-shaped cross-section and having a 21 is provided with a decorative screw (not shown).
It is fixed to.

A pull string 11 for turning on and off the pull switch is attached to the pull switch 10 so as to hang down from a lower surface portion 12 of the pull switch. Of the bushing 30, which is locked in the bushing mounting hole 22 formed in the tapered surface portion 21, and extends to the outside of the device. A button 13 is attached to the tip of the drawstring 11 to make it easier to operate the drawstring.

[0005] The bushing 30 is made of an elastic thermoplastic synthetic resin or the like. The bushing 30 has a columnar drawstring through hole 31 penetrating in the vertical direction.
And a circular abutting portion 33 protruding outward from a lower peripheral end of the circular cylindrical portion 32.

Further, a pair of locking claws 35, 35 having slit grooves 34 on both sides and projecting downward in a triangular shape are formed on the outer peripheral surface of the cylindrical portion 33 so as to face each other. I have. The locking claw portion 35 is formed so as to be deformable back and forth with the lower portion serving as a fulcrum. A gap D1 formed between the distal end surface of the locking claw portion 35 and the upper surface of the abutment portion 33
Is slightly larger than the material thickness t1 of the V-shaped reflector 20.

[0007]

As described above, the bushing 30 of the conventional lighting equipment with a pull switch is engaged with the tapered surface 21 of the V-shaped reflector 20. For this reason, the bushing 30 is attached obliquely to the drawstring 11 attached to the pull switch 10.

Therefore, when the drawstring 11 is shifted to the right and pulled downward, the drawstring 11 is pulled while being rubbed against the lower right end a of the drawstring through hole 31. When the drawstring is shifted to the left in the left direction and pulled downward, the drawstring 11 becomes the upper left end b of the drawstring through hole 31.
It is pulled while being rubbed.

Since the bushing 30 is locked to the tapered surface portion 21 of the V-shaped reflection plate 20, the drawstring through hole 31
The lower right end a and the upper left end b are acute angles. For this reason, there has been a problem that the pull cord of the pull switch is easily broken.

The locking of the bushing 30 to the V-shaped reflector 20 is performed by the locking claw 35 of the bushing 30 contacting the tapered surface 21 of the V-shaped reflector. For this reason, there is a problem that the backlash of the bushing is apt to be generated and the retention of the bushing to the V-shaped reflector is poor.

The V-shaped reflector 20 of the bushing 30
The bushing mounting hole 22 of the V-shaped reflector is formed in a circular shape in order to eliminate the direction of the engagement with the bushing. For this reason, there has been a problem that the bushing is rotated by vibration or the like, and the commerciality is reduced.

Further, since the bushing 30 is attached to the tapered surface portion 21 of the V-shaped reflector 20, there is a problem that the design becomes unbalanced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a lighting device with a pull switch having a bushing in which a drawstring is not easily cut and which has good mounting and holding properties.

[0014]

According to a first aspect of the present invention, there is provided a lighting apparatus with a pull switch according to the first aspect of the present invention, wherein a V-shaped reflector is disposed below the body of the lighting apparatus having a built-in pull switch. In a lighting fixture with a pull switch for operating a pull switch from below the V-shaped reflector by passing a pull-string for turning the pull switch into and out of the pull-string through hole of the bushing locked to the V-shaped reflector, the V-shaped reflector A bushing mounting hole is provided at the top of the plate with the top as a center, and a bushing mounted in the bushing mounting hole is elastically deformable to be engaged with a drawstring through hole penetrating vertically and an inner surface near the top of the V-shaped reflector. A cylindrical portion having a locking claw portion, and an abutting portion formed from the lower peripheral end of the cylindrical portion on the surface side of the V-shaped reflector in accordance with the V-shaped angle of the V-shaped reflector. The is characterized in that provided.

Further, in the lighting apparatus with a pull switch according to the present invention, the locking claw portion of the bushing may have the V-shape.
The V-shaped reflector is provided so as to be opposed to each other along the top of the V-shaped reflector, and the both corners of the locking claw are respectively engaged with the back surface of the tapered surface of the V-shaped reflector. .

In the above configuration, even if the drawstring is pulled in an oblique direction, the bushing penetrating the drawstring is V
Since the corners of the drawstring through-holes provided in the bushing are not arranged at an acute angle because the tops of the letter-shaped reflectors are arranged at the center, the drawstrings are disposed at the corners of the drawstring through-holes. The drawstring is hard to be cut even if it touches.

Further, since the bushing is locked to the V-shaped reflector with the top of the V-shaped reflector as a center, the bushing is connected to both corners of a pair of locking claws provided on the bushing. Since the bushing is locked in point contact with the tapered surface of the V-shaped reflector, the bushing is supported in point contact with the V-shaped reflector and has good retention.

[0018]

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 related art will be described with the same reference numerals.

FIG. 1 shows a lighting device with a pull switch equipped with a bushing according to the present invention.

The ceiling-mounted lighting fixture includes a fixture body 15 having a substantially U-shaped cross-section having a lower opening,
V-shaped reflector 20 mounted along the lower longitudinal direction of the
It is composed of

A L-shaped lamp socket mounting bracket 17 having a lamp socket mounting piece 18 which is inclined outward and obliquely upward at both ends in the longitudinal direction of the appliance body 15.
Are attached. A lamp socket 19 is fitted into a lamp socket mounting hole (not shown) on the lamp socket mounting piece 18, and the lamp socket 19 is mounted on both sides of the instrument body 15 so as to face each other. Has a straight tube fluorescent lamp 6
(Hereinafter referred to as “lamp”).

Further, a cubic pull switch 10 is fixed to the center of the lower surface of the top surface portion 7 of the instrument body 15 with a screw (not shown). On the lower surface 12 of the pull switch 10,
Drawstring 1 that “turns in” and “turns off” the pull switch 10
1 is attached hanging down. When the pull switch is turned on, the lamp 6 attached between the lamp sockets is turned on, and when the pull switch is turned off, the lamp 6 is turned off.

The tapered surface portions 21 and 22 of the V-shaped reflector 20
1, a socket insertion hole 23 for inserting the lamp socket 19 is formed. Further, a circular bushing mounting hole 25 is formed in the top portion 24 of the V-shaped reflection plate as shown in FIG.

As shown in FIGS. 2 and 3, the bushing 40 according to the present invention is made of an elastic synthetic resin or the like. The bushing 40 includes a cylindrical portion 42 having a columnar drawstring passing hole 41 formed therethrough in a vertical direction, and a tapered surface portion 21 of the V-shaped reflector 20 from a lower peripheral end of the cylindrical portion 42. 21 and an abutment portion 42 formed along the same.

A pair of locking claws 44 projecting outward and downward in a triangular shape are formed on the cylindrical portion 42 so as to face each other. A U-shaped slit groove 45 is formed on both sides and a lower side of the locking claw 44 so that the locking claw 44 can be deformed on a center line with the upper part serving as a fulcrum.

The bushing 40 is provided with the V-shaped reflector 2.
When mounted on the top 24 of the bushing 40, the corners 46, 46 at both ends of the locking claw of the bushing 40 are
The point contact is made with each of the 0 tapered surface portions 21 and 21.

A method of assembling a lighting device with a pull switch will be described.

The fixture body 15 to which the pull switch 10, the lamp socket 19 and the like are attached is screwed and fixed to the ceiling 5 with screws (not shown). In this state, the pull switch 10
Is fixed to the center of the lower surface of the top surface portion 7 of the instrument body 15 with a screw (not shown), so that the drawstring 11 attached to the pull switch 10 is attached to the center line of the instrument body 15 so as to be attached. ing.

Next, the bushing 40 according to the present invention is
It is mounted from below into a circular bushing mounting hole 25 drilled around the top 24 of the letter-shaped reflector 20.

When the cylindrical portion 42 of the bushing is inserted from below into the bushing mounting hole 25 of the V-shaped reflector, a pair of locking claws 44, 44 provided on the bushing are provided.
Of the bushing mounting hole 25 are in contact with the slanted surface portions 47, 47.

When the bushing 40 is pushed upward, the pair of locking claws 44 provided on the bushing 40 are deformed toward the center. Further, the bushing 40
While pushing up the bushing 40 in the circumferential direction.
Rotate.

A pair of locking claws 4 provided on the bushing
When the tops 4 and 44 substantially coincide with the top 24 of the V-shaped reflector, the pair of locking claws 44 and 44 provided on the bushing are released from the bushing mounting hole 25, and the locking claws 44 and 44 are respectively moved outward. Go to and restore to the original position.

In this state, the locking claw 44 of the bushing
The corner portions 46, 46 at both ends are point-contacted and locked to the tapered surface portion 21 of the V-shaped reflector. For this reason, since the bushing 40 is locked in point contact at four points, the bushing 40 can be attached to the top 24 of the V-shaped reflector with almost no play.

The drawstring 11 hanging down from the pull switch is passed through the drawstring passing hole 41 of the bushing 40 attached to the top of the V-shaped reflector 20. then,
The V-shaped reflector 20 is moved upward from below the appliance main body 15, and the lamp socket 19 attached to the appliance main body is inserted into the socket insertion holes 23 formed at both ends of the tapered surface portion 21 of the V-shaped reflector. Go to

The contact surface pieces 26, 26 formed on the upper portions on both sides of the V-shaped reflector 20 abut on the ceiling 5 or abut against a reflector mounting bracket (not shown) attached to the instrument body 15 in a state of being close to the ceiling 5. The V-shaped reflector 20 stops.

Then, a decorative screw is passed through a screw hole formed on the lower surface of the reflector mounting bracket, through a decorative screw insertion hole (not shown) formed at the top of the V-shaped reflector, and the decorative screw is screwed into the reflector mounting bracket. To fix the V-shaped reflector to the instrument body.

Next, the operation of the above embodiment will be described.

Below the main body of the instrument having the built-in pull switch, a V-shaped reflecting plate is attached to which a bushing having a drawstring hole at the top is locked. The pull switch is attached with a drawstring hanging down from the center of the instrument body, and protruding out of the instrument through the drawstring through-hole. The drawstring hangs outside the fixture through the top of a V-shaped reflector that is on the center line of the lighting fixture with a pull switch.

With the above structure, even if the drawstring is pulled diagonally, the bushing having the drawstring through-hole is located around the top of the V-shaped reflector, so The string is only in contact with the lower end c of the drawstring through hole of the bushing, and the bushing is attached to the tapered surface as in the prior art, and the end of the drawstring through hole of the bushing is arranged at an acute angle. Since there is no,
Even if the drawstring comes into contact with the corner of the drawstring passage hole, the drawstring is hard to cut.

Further, the engagement of the bushing with the V-shaped reflector is mounted in a bushing mounting hole formed about the top of the V-shaped reflector. For this reason, the pair of locking claws provided on the bushing are locked to the V-shaped reflector by point contact between the lower corners of the locking claw of the bushing and the tapered surface of the V-shaped reflector. Because it is locked,
Since the V-shaped reflector of the bushing is supported at four points, the bushing is locked to the V-shaped reflector with almost no play, and the holding performance is stabilized. In addition, since the locking claw portion of the bushing is locked to the strongest top of the V-shaped reflector, the holding performance is further stabilized.

Since the bushing is provided on the top of the V-shaped reflector, a well-balanced design can be provided.

[0042]

As described above in detail, according to the present invention, the bushing is provided on the top of the V-shaped reflector, so that a well-balanced design can be provided. Further, since the bushing is locked to the strongest top of the V-shaped reflector, the mounting and holding properties of the bushing are improved. The corners of the pair of locking claws formed on the bushing are V
Since the bushings are point-contacted and locked to the V-shaped reflector by point contact with the tapered surfaces of the V-shaped reflector, there is almost no backlash.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a configuration of a lighting device with a pull switch according to a first embodiment of the present invention.

FIG. 2 shows a state in which the bushing of the embodiment is locked to a V-shaped reflector, and FIG.
(B) is a side sectional view.

FIG. 3 is a front sectional view showing a state in which the bushing according to the embodiment is locked to a V-shaped reflector.

FIG. 4 is a side sectional view showing a configuration of a lighting apparatus with a pull switch according to the related art.

FIG. 5 (A) is a perspective view showing a part of a V-shaped reflector in a lighting apparatus with a pull switch according to the related art. (B) is a perspective view showing a bushing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Pull switch, 15 ... Instrument main body, 20 ... V-shaped reflective plate, 21 ... Tapered surface part, 24 ... Top part, 25 ... Bushing mounting hole, 40 ... Bushing, 41 ... Pull-through hole, 42 ... Cylindrical part (tube) 43) abutting part, 44 ... locking claw part, 46 ... corner part.

Claims (2)

[Claims] 1. A device having a pull switch built-in
A pull-up switch is provided with a V-shaped reflection plate, and a pull-string for turning the pull switch on and off is passed through the pull-string through hole of the bushing engaged with the V-shaped reflection plate to operate the pull switch from below the V-shaped reflection plate. In the lighting apparatus, a bushing mounting hole is provided at the top of the V-shaped reflector centering on the top, and a bushing mounted in the bushing mounting hole has a drawstring through hole penetrating vertically and an inner surface near the top of the V-shaped reflector. A cylindrical portion having an elastically deformable locking claw portion that locks on the surface of the V-shaped reflector; and a lower peripheral end of the cylindrical portion formed on the front side of the V-shaped reflector according to the V-shaped angle of the V-shaped reflector. Lighting device with a pull switch provided with a set abutting portion 2. The locking claw portion of the bushing is provided to face each other along the top of the V-shaped reflector, and both corners of the locking claw portion are tapered on the back surface of the V-shaped reflector. The lighting device with a pull switch according to claim 1, wherein the lighting device is engaged with the lighting device.