JP2014089828A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of more surely preventing falling of a lamp.SOLUTION: A support fitting 2 and a lamp 3 are provided. The lamp 3 includes: a lamp fitting plate 5 having a fitting part 53 supported by the support fitting 2; and a lamp body 4 having light emission diode and fixed at the lamp fitting plate 5. The support fitting 2 has two pieces of support parts 23 for supporting the fitting part 53 for each fitting part 53. At each fitting part 53, two pieces of fitting screws 6 are screwed with a head part 61 facing downward respectively. At each support part 23, a notch 24 into which a body 62 of the fitting screw 6 is engaged from a predetermined direction crossing in the vertical direction, and a fall-off prevention protrusion 25 are provided. The fall-off prevention protrusion 25 prevents falling of the fitting screw 6 from the notch 24 by being abutted against the head part 61 of the fitting screw 6 from the predetermined direction in a state where the fitting screw 6 is fastened. The falling of the lamp 3 can be more surely prevented compared to a case in which there is no fall-off prevention protrusion 25.

Description

  The present invention relates to a lighting fixture.

  2. Description of the Related Art Conventionally, there has been provided a lighting fixture that includes a lamp that holds a light source and a support fitting that is fixed to a ceiling and supports the lamp (see, for example, Patent Document 1).

  That is, a notch opened in the horizontal direction is provided in a support portion that supports the lamp in the support bracket, and the lamp has a supported portion that is supported around the notch. Moreover, the connection part connected with the supported part in the lamp is drawn downward through the above-described notch.

Japanese Patent Laid-Open No. 5-94710

  When a light-emitting diode is used as the light source, the light-emitting diode is more important for heat dissipation than other light sources. When the weight of the lamp is large with respect to the strength of the support part, the support part is elastically deformed due to the weight of the lamp, and the connecting part is detached from the notch, and the lamp may fall off. .

  This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture by which drop-off | omission of a lamp is prevented more reliably.

  The present invention includes a lamp and a support fitting having a support portion that supports the lamp, and the lamp includes a lamp attachment plate having an attachment portion supported by the support portion, a light source, and the lamp attachment. A lamp body fixed to the plate, and a mounting screw screwed into the mounting portion with the head facing downward, and the support portion has a notch into which the body of the mounting screw is engaged, In a state where the mounting screw is tightened, a retaining protrusion for preventing the mounting screw from being detached from the notch is provided by contacting the head of the mounting screw.

  In the above luminaire, the lamp mounting plate is made of a metal plate, and a main body portion whose thickness direction is directed in the vertical direction, and a bent portion whose direction is at least partially intersecting the vertical direction. It is desirable to have

  According to the above configuration, it is possible to more reliably prevent the lamp from falling off compared to the case where the retaining protrusion is not provided.

It is a perspective view which shows the principal part of embodiment of this invention. It is a disassembled perspective view which shows the same as the above. It is a disassembled perspective view which shows a decorative board and a reflective frame same as the above. It is a perspective view which shows a support metal fitting same as the above. It is a perspective view which shows the principal part of a support metal fitting same as the above. It is a perspective view which shows the lamp mounting plate same as the above. It is a perspective view which shows the principal part of a lamp attachment plate same as the above. It is a perspective view which shows the process in which a lamp is attached to a support bracket in the same as the above. It is a perspective view which shows the principal part same as the above. It is a perspective view which shows the state in which the lamp was attached to the support metal fitting in the same as the above.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIGS. 2 and 3, the present embodiment includes an instrument main body 1 fixed to a ceiling (not shown), a support fitting 2 attached to the instrument main body 1 (that is, mechanically coupled), and a support. And a lamp 3 supported by the metal fitting 2.

  Hereinafter, the ABCDEF direction shown in FIG.

  The instrument body 1 includes a rectangular parallelepiped circuit storage unit 11, a top plate 12 coupled to the lower side of the circuit storage unit 11, and leg portions 13 projecting downward from both front and rear ends of the top plate 12. The lower end portion of each leg portion 13 is fixed to the inner peripheral surface of a cylindrical mounting frame 14 whose axial direction is directed vertically. Furthermore, the suspension arm 15 protrudes upward from two places, which are shifted from each other by 180 ° around the central axis in the mounting frame 14. At the upper end of each suspension arm 15, a supported portion 151 having a thickness direction directed in the vertical direction is provided, and each supported portion 151 is provided with a bolt insertion hole 150 that is a through hole penetrating vertically. It has been. Each of the bolt insertion holes 150 is inserted with one hanging bolt (not shown) suspended from the ceiling. A nut (not shown) is attached to each suspension bolt above the supported portion 151. That is, the instrument body 1 is supported by the nuts in the supported portions 151. The circuit storage part 11, the top plate 12, the leg part 13, the attachment frame 14, and the suspension arm 15 are each made of, for example, a metal plate and are coupled to each other by appropriate means such as caulking or screwing.

  A cylindrical reflecting frame 71 having an axial direction directed in the up-down direction is attached to the lower side of the lamp 3. The reflection frame 71 as a whole has a truncated cone shape whose inner diameter and outer diameter are increased downward, and reflects light emitted downward from the lamp 3 on the inner peripheral surface. Furthermore, kick springs 72 each made up of a torsion coil spring are attached to two locations whose positions are shifted by 180 ° on the outer peripheral surface of the reflecting plate 71. A pair of support pieces 16 that are opposed to each other in the circumferential direction of the mounting frame 14 are provided at two positions shifted by 180 ° on the inner peripheral surface of the mounting frame 14 of the instrument body 1. The reflection frames 71 are supported by the instrument body 1 by elastically contacting both ends with the support pieces 16. Further, a decorative plate 73 having four window portions 730 that allow the light of the lamp to pass is interposed between the reflection frame 71 and the lamp 3. The window portion 730 may be a through hole or may be made of a light-transmitting material.

  Hereinafter, the support metal fitting 2 and the lamp 3 which are characteristic portions of the present invention will be described.

  The support metal fitting 2 is formed by punching and bending a metal plate, for example, and as shown in FIG. 4, is a rectangular shape that is long to the left and right, with the thickness direction facing up and down. 11 and the top plate 12, and a main body 21 that is coupled to the instrument main body 1. That is, the support fitting 2 is fixed to the ceiling via the appliance body 1. In addition, the support bracket 2 includes an arm portion 22 projecting downward from both ends in the longitudinal direction (left-right direction) of the main body portion 21, and left-right direction from both ends in the width direction (front-rear direction) of each arm portion 22. A total of four support portions 23 projecting inward. As shown in FIG. 5, each support portion 23 has a notch 24 that opens in the front (right lower side in FIG. 5), which is a common direction for all the support portions 23, and a front side of the notch 24. And a retaining projection 25 projecting downward from the inner side in the left-right direction.

  The lamp 3 includes four lamp bodies 4 each holding a light emitting diode (not shown) that is a light source, and a lamp mounting plate 5 that the lamp bodies 4 are coupled to each other and supported by the support portion 23 of the support bracket 2. With.

  Each lamp body 4 can be connected to a reflector 41 having a frustoconical inner peripheral surface that reflects light from the light-emitting diode downward, a radiation fin 42 that is thermally connected to the light-emitting diode, and an electric wire. Circuit connection portion 43. Here, the circuit storage portion 11 holds a power supply connection portion 17 that is electrically connected to an external power supply via a power supply line (not shown). Further, the circuit storage unit 11 stores a power supply circuit (not shown) that converts electric power input from the power supply to an appropriate DC power supply via the power supply line and the power supply connection unit 17. . The light emitting diode of each lamp body 4 is electrically connected to the power supply circuit via an electric wire (not shown) connected to the circuit connection portion 43 and is lit by DC power input from the power supply circuit. Since the power supply circuit as described above can be realized by a known technique, illustration and detailed description thereof are omitted. Further, the power supply connection portion 17 and the circuit connection portion 43 may be realized using a known connector, or may be realized using a known terminal structure such as a quick connection terminal. Furthermore, the top plate 12 of the fixture body 1 and the main body portion 21 of the support fitting 2 are provided with wire insertion holes 120 and 20 that are through holes communicating with each other, and connect the power supply circuit and the lamp body 4. Are inserted into the wire insertion holes 120 and 20.

  The lamp mounting plate 5 is made of, for example, a metal plate, and the coupling between each lamp body 4 and the lamp mounting plate 5 is realized by appropriate means such as screwing.

  As shown in FIG. 6, the lamp mounting plate 5 includes a main body portion 51 whose thickness direction is directed in the vertical direction, a reinforcing portion 52 projecting downward from both front and rear end portions of the main body portion 51, and a main body portion 51. Mounting portions 53 projecting upward from the left and right end portions of each. The main body 51 is provided with four window holes 50 corresponding to the lamp main body 4 in a one-to-one manner, each of which is a through hole that emits light from the lamp main body 4 downward. The reinforcing portion 52 is U-shaped when viewed from the left-right direction, and the attachment portion 53 is inverted U-shaped when viewed from the front-rear direction. That is, the front and rear end portions of the reinforcing portion 52 and the left and right end portions of the attachment portion 53 are respectively a front-rear direction or a left-right direction that is a direction that intersects the thickness direction (vertical direction) of the main body portion 51. Is aimed at. By providing the bent portions such as the reinforcing portion 52 and the mounting portion 53, the mechanical strength of the lamp mounting plate 5 is improved as compared with the case where the lamp mounting plate 5 does not have a bent portion. .

  In addition, at each of the front and rear end portions of each mounting portion 53, one mounting screw 6 is provided at each of the head portions with the thickness direction directed vertically as shown in FIG. The part 61 is screwed downward.

  The lamp mounting plate 5 is supported by the support portion 23 of the support bracket 2 at each portion where the mounting screw 6 is screwed.

  Furthermore, a notch 531 is provided at the rear end of each attachment portion 53 so as to be opened to the outside in the left-right direction and to the rear. The head 61 of the rear mounting screw 6 is exposed in the notch 531 when viewed from the outside in the left-right direction.

  Further, an introduction hole 532 opened from the rear side of the front attachment screw 61 to the outer side in the left-right direction is provided at the front end portion of each attachment portion 53.

  When the lamp 3 is supported by the support bracket 2, first, each mounting is performed until a gap through which the retaining protrusion 25 can pass is vacant between the head 61 of the mounting screw 6 and the lower surface of the mounting portion 53. Loosen the screw 6. After that, as shown in FIG. 8, the front support portion 23 is introduced into the introduction hole 532 from above, and the rear support portion 23 is introduced slightly below the attachment portion 53. Next, as indicated by an arrow A1 in FIG. 8, the lamp 3 is displaced rearward with respect to the support fitting 2, and the body 62 of each mounting screw 6 is engaged to the depth of the notch 24 of the support 23, respectively. . Then, each support portion 23 enters the lower side of the attachment portion 53 and supports the attachment portion 53. Finally, each mounting screw 6 is tightened. Then, as shown in FIGS. 1 and 9, the heads 61 of the mounting screws 6 abut against the retaining projections 25 from the rear side, so that the lamp 3 is displaced relative to the support bracket 2 and is displaced forward ( That is, the attachment screw 6 is prevented from being detached from the notch 24. Here, as shown in FIG. 10, the attachment of the lamp 3 to the support bracket 2 is completed.

  According to the above configuration, when the lamp 3 is attached to and detached from the support bracket 2, the attachment screw 6 is loosened to avoid interference between the attachment screw 6 and the retaining protrusion 25. Further, in the state where the attachment of the lamp 3 to the support bracket 2 is completed and the attachment screw 6 is tightened, the retaining protrusion 25 comes into contact with the head 61 of the attachment screw 6 so that the attachment screw 6 is detached from the notch 24. Is prevented. As long as the mounting screw 6 is not detached from the notch 24, the lamp 3 does not fall off (that is, the attaching portion 53 is detached from the support portion 23). Therefore, the attaching screw 6 is detached from the notch 24 as described above. This prevents the lamp 3 from falling off. That is, the lamp 3 can be more reliably prevented from dropping compared to the case where the retaining protrusion 25 is not provided.

DESCRIPTION OF SYMBOLS 2 Support metal fitting 3 Lamp 4 Lamp main body 5 Lamp mounting plate 6 Mounting screw 23 Support part 24 Notch 25 Retaining protrusion 51 Main part 52 Reinforcement part (folding part)
53 Mounting part (also serves as a bent part)
61 head 62 torso

Claims (2)

A lamp that holds an electrical light source, and a support fitting having a support portion that supports the lamp,
The lamp includes a lamp mounting plate having a mounting portion supported by the support portion, a lamp body that holds the light source and is fixed to the lamp mounting plate, and is screwed into the mounting portion with a head facing downward. With a combined mounting screw,
The support portion has a notch in which the body portion of the mounting screw is engaged, and the mounting screw is detached from the notch by contacting the head of the mounting screw when the mounting screw is tightened. A luminaire is provided with a retaining protrusion for preventing the above.   The lamp mounting plate is made of a metal plate, and has a main body portion whose thickness direction is directed in the vertical direction and a bent portion whose direction is at least partially intersecting the vertical direction. The lighting fixture according to claim 1.

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