JP2000231819A - Fluorescent lamp luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluorescent lamp luminaire ensuring electrical connection of a reflector with a luminaire body in its mounting process. SOLUTION: A luminaire body 1 is equipped with a reflector 2 disposed on the side of a lower surface thereof and has a turn-lock part 5 for mounting the reflector 2 on a reflector mounting bracket 4. The turn-lock part 5 is equipped with a conductive component 5-1 engaging with the reflector mounting bracket 4 and an insulating component 5-2 for covering a lower part thereof while the insulating component 5-2 is equipped with a shaft part 5-3 having an oval cross-section and a knob part 5-4 disposed on the lower side thereof. The shaft part 5-3 is provided with a pair of contact parts 5-5 integrally formed with the conductive component 5-1 and exposed around the shaft. The reflector 2 is provided with a through-hole 2-1 allowing the shaft part 5-3 to pass therethrough. The reflector 2 is electrically connected to the luminaire body 1 by means of the through-hole 2-1, the contact parts, and the reflector mounting bracket 4. A disk part 5-9 is formed on a top part of the insulating component 5-2, and guide projections 4-3 are provided on the reflector mounting bracket 4 in positions around the disk part for limiting the movement of the center of rotation of the disk part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a reflector in a fluorescent lamp apparatus and an electrical connection structure between the reflector and the apparatus body.

[0002]

2. Description of the Related Art Conventionally, a reflecting plate is attached to an instrument body with insulating parts, decorative screws and the like. The electrical connection between the reflector and the instrument body is inadequate and therefore requires separate electrical connection means.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a reflector mounting structure using a rotation locking member, in which a fluorescent lamp fixture in which a reliable electrical connection between the reflector and the instrument body is made during the mounting process. It is to provide.

[0004]

According to the present invention, there is provided an apparatus body having a reflector mounting bracket, a reflector disposed on a lower surface side of the apparatus main body, and a rotating member for mounting the reflector to the reflector mounting bracket. It is assumed that a fluorescent lighting device having a stop is used. The rotation locking tool includes a conductive component that engages with the reflector mounting bracket and an insulating component that covers a lower portion of the conductive component. The insulating component includes a shaft portion having an elliptical cross section and a knob portion below the shaft portion. A pair of contact portions that are integral with the conductive component and that are exposed around the shaft are provided on the shaft portion. The reflection plate has a through hole through which the shaft portion passes. The relative shapes of the shaft portion to which the pair of contact portions are attached and the through hole are determined such that the pair of contact portions press against the edge of the through hole in a state where the longitudinal directions thereof are orthogonal to each other. A disk portion facing the reflector mounting bracket is formed on the top of the insulating component. A guide projection for restricting movement of the center of rotation of the disk portion is provided at a position around the disk portion in the reflector mounting bracket.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The illustrated fluorescent lamp device includes a device main body 1 having a reflector mounting bracket 4. A reflection plate 2 is provided on the lower surface side of the instrument body 1. A rotation locking tool (5) for detachably mounting the reflector (2) to the reflector mounting bracket (4) is provided. The rotation locking tool 5 includes a conductive component 5-1 detachably engaged with the reflector mounting bracket 4 and an insulating component 5-2 covering a lower portion of the conductive component 5-1. The insulating part 5-2 includes a shaft part 5-3 having an elliptical cross section and a knob part 5-4 below the shaft part 5-3. The shaft portion 5-3 is provided with a pair of contact portions 5-5 integral with the conductive component 5-1 and exposed around the axis. The reflection plate 2 is provided with a through hole 2-1 through which the shaft portion 5-3 passes.
A shaft portion 5-3 provided with a pair of contact portions 5-5 and a through hole 2-
The shape of the contact portion 5 is determined so that the pair of contact portions 5-5 is pressed against the edge of the through hole 2-1 in a state where the longitudinal directions thereof are orthogonal to each other. The reflection plate 2 is connected to the through hole 2-1 and the contact portion 5-5.
The conductive component 5-1 is electrically connected to the appliance body 1 via the reflector mounting bracket 4. A disk part 5-9 facing the reflector mounting bracket 4 is formed on the top of the insulating part 5-2. A guide projection 4-3 for restricting the movement of the center of rotation of the disk portion 5-9 is provided at a position around the disk portion 5-9 in the reflector mounting bracket 4.

In the present invention, the reflection plate 2 is provided with a through hole 2-1.
・ Contact part 5-5 ・ Conductive part 5-1 ・ Reflector mounting bracket 4
Is electrically connected to the instrument main body 1 via the. For this reason, if the instrument body 1 is grounded, the reflector 2 is also grounded.
It is not necessary to ground the reflectors 2 individually. Through hole 2-1
The structure in which the contact portions 5-5 are appropriately pressed against each other prevents smooth rotation of the rotation locking tool 5. Guide projection 4-
3 alleviates it. The downward projection 4-4, which is a downward projection formed slightly inside the guide projection 4-3,
The contact area with -9 is narrowed to assist the rotation locking tool 5 to rotate smoothly. Supplement the structure description. A pair of lamp sockets 3 are provided on the lower surfaces of both ends of the apparatus main body 1. The lamp socket 3 is provided with a straight tube-type fluorescent lamp (not shown). The fluorescent lamp passes under the reflector 2 and the rotation stopper 5. The reflecting plate 2 is in the shape of a back gutter. Elements of the rotation locking tool 5 are a conductive component 5-1 and an insulating component 5-2. The lower part of the conductive part 5-1 is hidden in the insulating part 5-2. However, only the contact portion 5-5 is exposed even in the lower portion. Elements of the insulating part 5-2 are a disk part 5-9, a shaft part 5-3, and a knob part 5-4. The shaft portion 5-3 has a pair of contact portions 5-5.
Is included. Part code 5-2 is 5-3 / 5-4 / 5-9
Is a superordinate symbol of. The disk portion 5-9 is interposed between the reflector 2 and the reflector mounting bracket 4 and prevents the reflector 5 from easily falling off the reflector 2. The through hole 2-1 is an elongated hole that can pass when the knob 5-4 has an appropriate rotation phase. Through hole 2-
1. The arrangement is such that when the longitudinal direction of the knob portion 5-4 is orthogonal, the through hole 2-1 and the contact portion 5-5 are pressed against each other.

The locking hole 4-1 of the reflector mounting bracket 4 is a deformed elongated hole through which the conductive component 5-1 (more precisely, its head) can pass when the rotation phase is appropriate. An annular projection 4-2 that is upwardly convex is formed at a position around the locking hole 4-12 of the reflector mounting bracket 4. The annular projection 4-2 supports the conductive component 5-1 in a line contact manner from below, and allows smooth rotation of the conductive component 5-1. Insulating component 5-2
Is formed of a synthetic resin having elasticity. The lower part of the conductive part 5-1 is buried in the molding by the mold. When the knob 5-4 is appropriately rotated, the head of the conductive component 5-1 is locked in the locking hole 4-1 (a state in which the head does not drop from the locking hole 4-1). At the same time, the knob portion 5-4 has the through hole 2
-1 (a state in which the reflection plate 2 does not fall from the knob 5-4). Further, since the relationship between the illustrated dimensions is C <A ≦ B, the edge of the through hole 2-1 is pressed against each contact portion 5-5, and electrical connection is made. This pressure contact also serves as an undesired rotation stop of the rotation locking tool 5. As described above, the reflection plate 2, the contact portion 5-5, the conductive component 5-1.
The reflector mounting bracket 4 (its annular projection) and the fixture main body 1 are connected in this order, and electrical connection between the reflector 2 and the fixture main body 1 is ensured. If such an electrical connection is not made, an auxiliary earth wire (not shown) connecting the instrument body 1 and the reflector 2 connected to the earth is required. The dimensional relationship between the disc portion 5-9 at the top of the insulating component 5-2 and the through hole 2-1 is D <E. This is because the through hole 2-1 is closed by the disk portion 5-9, and the appearance of the through hole 2-1 (a state in which a part of the hole is not closed) is prevented from being unsightly. When the knob 5-5 is operated to rotate the rotation locking member 5, the disk portion 5-9 naturally rotates. In the process, the center of rotation of the disk portion 5-9 or the like may move. This is disadvantageous in the present invention in which the press-contact between the through hole 2-1 and the contact portion 5-5 is scheduled. The guide projection 4-3 arranged around the disk portion 5-9 reduces this adverse effect. When the center of rotation of the disk portion 5-9 or the like moves, it immediately hits the guide projection 4-3 in that direction, and restricts further movement.

[0008]

According to the present invention, it is possible to reliably electrically connect the reflector / apparatus body via the press-contact portion between the edge of the through hole and each contact portion. Further, since this electrical connection is made in the process of mounting the reflector, it is advantageous in terms of the number of assembling steps, and an inexpensive fluorescent lamp apparatus can be provided. Further, since the required guide projections are formed, the difficulty of turning the rotation locking member is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of the device of the present invention.

FIG. 2 is an exploded perspective view of the range of FIG.

FIG. 3 is an enlarged perspective view of a reflector mounting bracket.

FIG. 4 is an enlarged cross-sectional view of a portion of the rotation stopper shown in FIG. 1;

FIG. 5 is a right side view of the rotation locking tool shown in FIG. 4;

FIG. 6 is an enlarged sectional view of a shaft portion of the rotation locking member.

[Explanation of symbols]

 1: Apparatus body 2: Reflector 2-1: Through-hole 4: Reflector mounting bracket 4-3: Guide projection 5: Rotation stopper 5-1: Conductive component 5-2: Insulating component 5-3: Shaft 5-4: Knob 5-5: Contact 5-9: Disk

Claims (1)

[Claims] An apparatus body (1) having a reflector mounting bracket (4), and a reflector (2) arranged on the lower surface side of the instrument body (1), wherein the reflector (2) is mounted on the reflector. In a fluorescent lamp apparatus provided with a rotation locking tool (5) to be mounted on a plate mounting bracket (4), the rotation locking tool (5) is a conductive component (5-) that engages with the reflector mounting bracket (4). 1) and the conductive component (5-1)
An insulating part (5-2) covering a lower part of the shaft, the insulating part (5-2) having a shaft part (5-3) having an elliptical cross section and a knob part (5-4) on the lower side thereof. And the shaft portion (5-
3) a pair of contact portions (5-5) integral with the conductive component (5-1) and exposed around the axis are provided; and the shaft portion (5-3) is provided on the reflection plate (2). Is provided with a through hole (2-1) through which the shaft portion (5-3) provided with the pair of contact portions (5-5) and the relative shape of the through hole (2-1) are determined. In a state where the longitudinal directions are orthogonal to each other, the pair of contact portions (5-5) are determined so as to press against the edge of the through hole (2-1), and the reflection portion is provided on the top of the insulating component (5-2). The disk (5-) facing the plate mounting bracket (4)
9), and a guide projection (4-9) for restricting the movement of the center of rotation of the disk portion (5-9) at a position around the disk portion (5-9) in the reflector mounting bracket (4). (3) A fluorescent lamp device characterized by the provision of (3).