JP2019029214A - Lighting fixture - Google Patents

Abstract

To provide a lighting fixture with high intensity.SOLUTION: A lighting fixture includes: a light source part; a body installed on a back side of the light source part; an arm with a pair of lateral plates installed while facing a lateral face of the body; and a power supply part connected on a back side relative to the body and between the pair of lateral plates of the arm.SELECTED DRAWING: Figure 1

Description

  The technical field of the present invention relates to a lighting fixture.

  Conventionally, lighting fixtures such as high ceiling fixtures installed in gymnasiums and the like have been required to have strength to withstand vibrations and external impacts (ball collisions, etc.) when installed on the ceiling.

JP 2013-007394 A

  The problem to be solved by the present invention is to provide a lighting device that is light and strong.

An embodiment of the present invention includes a light source part, a main body provided on a back side of the light source part, an arm having a pair of side plate parts provided to face side surfaces of the main body, a back side of the main body, and the And a power supply unit connected across the pair of side plate portions of the arm.

According to the present invention, it can be expected to provide a light and strong lighting fixture by an inexpensive method without adding components.

It is a perspective view which shows the lighting fixture in embodiment of this invention. It is an exploded view which shows the lighting fixture in embodiment of this invention. It is a side view which shows the lighting fixture in embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the following description, an installation location direction such as a ceiling to which a lighting apparatus according to an embodiment of the present invention is attached is referred to as a back side, and an irradiation direction facing the back side is referred to as a front side.

  As shown in FIGS. 1 and 2, the lighting fixture according to the embodiment of the present invention includes a pair of side plates 12 and 12 of an arm 1 formed in a substantially U shape and an arm 1 extending in the front-back direction. A housing-like power supply unit 2 supported and fixed in between, a plate-like connection unit 3 connected to and attached to the end of the arm 1, a radiator 4 provided on the front side from the power supply unit 2, A flat plate-like main body 5 connected to the connecting portion 3 and provided with a radiator 4 on the back surface, a light source portion 6 provided on the front side of the main body 5 and supplied with power from the power source portion 2, and a light source portion 6 includes a reflecting portion 7 that reflects light emitted from the light source 6 and a light-transmitting cover portion 8 that covers the light source portion 6 and the front surface of the reflecting portion 7.

  As shown in FIG. 1, the arm 1 is a thin plate member made of a metal such as aluminum or iron. The arm 1 has a long plate-like attachment portion 11 attached to an installation place such as a ceiling on the back side. The arm 1 also has a pair of side plate portions 12 formed so that both end portions of the attachment portion 11 are extended and bent toward the front side. A bent portion formed between the attachment portion 11 and the side plate portion 12 is referred to as a bent portion 13.

The attachment portion 11 is provided with a hole 111 penetrating in the front-back direction. When installing the luminaire according to the embodiment of the present invention in an installation place such as a ceiling, after passing through the hole 111 fixed to the installation place from the back side to the front side, a fixing member such as a nut Is fastened to the suspension bolt or the like from the front side of the mounting portion 11 to support and fix the arm 1 and the lighting fixture.

The pair of side plate portions 12 and 12 have a power supply connection portion 121 between which a power supply portion 2 described later is connected and fixed by a fixing member (not shown) such as a screw. The power supply connecting portion 121 is provided on one side plate portion 12 so as to be arranged in two places on a line parallel to the main surface (surface having the largest area) 21 of the power supply portion 2, for example. Two power connection portions 121 provided on a line parallel to the main surface are provided at positions facing each other also on the other side plate portion 12, and in the embodiment in FIGS. 1 and 2, a total of four power connection portions are provided. In 121, the power supply unit 2 is connected to the side plate unit 12.

Further, the side surface, which is a surface adjacent to the main surface of the power supply unit 2, has a hole into which a fixing member such as a screw is screwed at a position corresponding to the power supply connection unit 121.

As another embodiment, when the power supply unit 2 is installed vertically and the main surface of the power supply unit 2 is formed to be parallel to the longitudinal direction of the side plate part 12, the power supply connection unit 121 is connected to the main unit of the power supply unit 2. It is provided at two or more places on a line parallel to the longitudinal direction of the surface and the side plate portion 12.

As a result, the power source unit 2 has an effect that it can be stably attached to the side plate unit 12 by the power source connecting unit 121.

Each of the pair of side plate portions 12 and 12 is provided with a circular fulcrum hole 122 through which a screw member can pass through in front of the power supply connection portion 121. Further, on the front side of the fulcrum hole 122, elongated holes 123 are provided on the circumference centering on the fulcrum hole 122, respectively.

As shown in FIG. 3, the side plate portion 12 has a narrow narrow portion 124 on the front side of the bent portion 13. The power connection part 121 is provided on the front side from the narrow part 124.

The power source unit 2 is formed as a metal substantially rectangular parallelepiped housing as shown in FIG. 1, and as shown in FIG. 2, the terminal unit 22 having terminals connectable to an external power source and the lighting of the light source unit 6 to be described later A control board 23 that performs control is provided. The power supply unit 2 has, for example, a main surface 21 having the largest area on the front side and the back side. In the vicinity of the center of the main surface 21 on the back side, a cord hole 24 is formed for electrical connection with a light source unit 6 described later and a cord (not shown).

As shown in FIGS. 1 and 3, the length of the power supply unit 2 in the front-back direction is formed shorter than the length of the side plate unit 12 in the front-back direction. Specifically, the back main surface of the power supply unit 2 has a space between the mounting part 11 of the arm 1 and a fixing member such as a screw in the hole 111 when the mounting part 11 of the arm 1 is attached to the installation location. It is attached so that it can be installed.

In the embodiment of the present invention, as shown in FIG. 3, the side surface of the power supply unit 2 is provided at a position at least partially overlapping the narrow portion 124 when viewed from the side surface on the side plate portion 12 side.

Further, as shown in FIG. 1, the length between the pair of side plate portions 12, 12 of the power supply unit 2 is formed to be substantially the same as that between the pair of side plate portions 12, 12. The length of the power supply unit 2 in the direction horizontally orthogonal to the direction between the pair of side plate parts 12 and 12 is the same as that of the radiator 4 when the connecting unit 3 described later is swung at least 30 degrees along the long hole 123. They are not in contact with each other and are formed to have a length longer than the width of the side plate portion 12.

As another embodiment, the power supply unit 2 may be attached between the side plate portions 12 and 12 by attaching the side surface of the power supply unit 2 via the power supply connection unit 121 and a new connection member. In that case, the length between the side plate parts 12 and 12 of the power supply part 2 is shorter than the distance between the side plate parts 12 and 12. The length between the side plate portions 12 and 12 including the new connection member and the power source portion 2 only needs to be substantially the same as the distance between the side plate portions 12 and 12, and this configuration improves the strength against impact from the outside of the arm 1 Can be expected.

The connecting portion 3 is formed as a substantially L-shaped metal thin plate, for example, and is provided so that the front side is connected to a body 5 described later and extends to the back side. The pair of connecting portions 3 are provided at positions facing each other that can be connected to the pair of side plate portions 12, 12 of the arm 1.

The connecting portion 3 is a member that connects the arm 1 and the main body 5.

The connecting portion 3 has a rear side communication hole 31 and a front side communication hole 32 corresponding to the fulcrum hole 122 and the long hole 123 of the arm 1. The back side communication hole 31 and the front side communication hole 32 are each formed in a circular shape. The back-side communication hole 31 is connected to the fulcrum hole 122, and the front-side communication hole 32 is connected to the arm 1 and the connecting portion 3 by inserting a fixing member such as a screw together with the elongated hole 123.

As shown in FIG. 1, the pair of connecting portions 3, 3 are disposed inside the side plate portions 12, 12.

The radiator 4 is composed of a plurality of fins that are metal plates that are formed in a plurality of substantially rectangular shapes and are provided in parallel so as to protrude toward the back side of the main body 5 and are excellent in heat dissipation. The plurality of fins have a longitudinal direction and a lateral direction, and are provided so that the longitudinal direction is orthogonal to the extending direction of the attachment portion 11 of the arm 1 and the extending direction of the side plate portion 12.

As shown in FIG. 3, the longitudinal length of the fin is formed longer than the length of the side parallel to the main surface on the side surface connected to the side plate portion 12 of the power supply unit 2. This prevents the radiator 4 and the power supply unit 2 from colliding even if the connecting part 3 is swung along the long hole 123, and the airflow to the rear side of the radiator 4 is not hindered, Heat dissipation can be improved.

The main body 5 is thermally connected to the front side of the radiator 4. The main body 5 may be formed integrally with the radiator 4 or may be connected as a separate body using a connecting member. Further, the main body 5 and the radiator 4 or the main body 5 and the light source unit 6 may be connected via a metal member or grease having excellent thermal conductivity. The main body 5 is connected to the connecting portion 3 by a fixing member (not shown) such as a screw. The connecting portion 3 may be formed integrally with the main body 5, and the connecting portion 3 at that time may be provided so as to protrude from the back side of the main body 5 instead of being substantially L-shaped.

The light source unit 6 shown in FIG. 2 is a substrate provided with a plurality of light emitting elements such as LEDs (Light Emitting Diodes) provided on the front side of the plate-like main body 5. The light source unit 6 is electrically connected to the power source unit 2 and emits light when supplied with power.

The reflection unit 7 shown in FIG. 2 is provided as a member that controls reflection of light emitted from the light source unit 6. For example, the reflecting portion 7 is formed as a resin-made cylindrical casing having an inner diameter that surrounds the plurality of light emitting elements of the light source section 6, and has a mirror surface portion on the inner periphery of the cylindrical casing, and emits light from the plurality of light emitting elements. Is reflected to irradiate the front side of the reflector 7. The reflection unit 7 may be formed of a plurality of cylindrical casings, or may be a mirror member provided so as to surround the periphery of the substrate of the light source unit 6.

The cover portion 8 is formed as a light-transmitting member such as glass or resin. The cover unit 8 is formed so as to cover the front surface and side surfaces of the reflection unit 7 and the light source unit 6, and is fixed to the substrate of the light source unit 6 from the front surface or the side surface by screwing or the like.

Conventionally, in order to attach the power supply unit 2 to a lighting fixture, a pedestal frame for installing a power supply is provided on the back side of the main body 5 and the radiator 4, and the power supply unit 2 is attached thereto. However, lighting fixtures such as high ceiling fixtures intended to be installed at high places have been required to reduce the weight of the fixtures.

In the luminaire according to the embodiment of the present invention, the power supply unit 2 is connected to the pair of side plate portions 12 and 12 of the arm 1 to reduce the number of parts and reduce the weight.

Further, in the lighting fixture according to the embodiment of the present invention, the arm 1 itself is formed thin for weight reduction, but the pair of side plate portions 12 and 12 has the pair of connecting portions 3 and 3 on the inner side. And can be prevented from being deformed by an impact from the outside of the lighting fixture.

And in the lighting fixture which is embodiment of this invention, when the power supply part 2 is connected between a pair of side plate parts 12 and 12 of the arm 1, a pair of side plate parts 12 and 12 is by the impact from the outside. It is difficult to deform and has a high strength configuration. When the arm 1 has the narrow portion 124 as shown in FIG. 1, the side plate portion 12 is reduced in weight by the narrow portion 124 by providing at least a part of the side surface of the power source portion 2 with the narrow portion 124. In addition, the power supply unit 2 can reinforce the pair of narrow portions 124 and 124 formed narrower than the surroundings.

In addition, since the power supply unit 2 attached between the pair of side plate portions 12 and 12 serves as a lighting control device for the light source unit 6 and a reinforcing member for the arm 1, the strength of the lighting fixture is improved with the minimum necessary members. be able to. That is, according to the embodiment of the present invention, it is possible to reduce the weight of the lighting fixture and improve the strength of the arm 1 by an inexpensive method without adding parts.

Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1 ... arm
11 ... Mounting part
111 ... hole
12 ... Side plate
121… Power connection
122 ... fulcrum hole
123 ... Long hole
124 ... Narrow part
13 ... Bent part
2… Power supply
21 ... Main surface
22 ... Terminal
23… Control board
24 ... Cord hole
3 ... Connecting part
31… Rear side communication hole
32… Front side communication hole
4… Heat radiator
5 ... Body
6 ... Light source
7 ... Reflecting part
8 ... Cover part

Claims (4)

A light source unit;
A main body provided on the back side of the light source unit;
An arm having a pair of side plate portions provided to face the side surface of the main body;
A power supply connected to the back side of the main body and between the pair of side plates of the arm;
A lighting fixture having.   The lighting fixture according to claim 1, wherein a length of the power supply unit in the direction between the pair of side plate portions is the same as a length between the pair of side plate portions. The side plate part has a power connection part to which the power supply part is connected,
The said power supply connection part is a lighting fixture of Claim 1 or 2 provided in two or more places on the line | wire parallel to the main surface which is a surface which has the widest area of the said power supply part. Each of the pair of side plate portions has a narrow portion that is a narrowed portion,
4. The lighting apparatus according to claim 1, wherein at least a part of a side surface of the power supply unit overlaps with the narrow portion when viewed from a side surface on the side plate part side.

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