JP2014191930A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a tube portion of a straight tube LED lamp unlikely to be damaged.SOLUTION: Each holding piece 52 is configured in such a manner that at a portion excluding both ends along an axial direction of a lamp 8, at least one part (projection 54) of a surface facing a tube portion of the lamp 8 protrudes toward the tube portion. Therefore, when the tube portion of the lamp 8 is elastically held between the pair of holding pieces 52, only a tip portion of the projection 54 comes into contact with the tube portion of the lamp 8. That is, only the tip portion of the projection 54 comes into contact with the tube portion of the lamp 8 and the edge of the holding piece 52 does not come into contact with the tube portion; thus, compared with the case where the edge of the holding piece 52 comes into contact, the tube portion of the lamp 8 can be made less likely to be damaged.

Description

  The present invention relates to a lighting apparatus for a straight tube LED lamp.

  In recent years, instead of a straight tube fluorescent lamp and a lighting device for a straight tube fluorescent lamp, a straight tube LED lamp and a lighting device for a straight tube LED lamp are becoming widespread (see Patent Document 1). The lighting fixture described in Patent Literature 1 includes a rectangular box-shaped fixture body embedded in a ceiling, a reflector attached to the inner bottom surface of the fixture body, a pair of lamp sockets, and a lamp support spring.

  The lamp sockets are provided at both ends in the longitudinal direction of the reflector. The straight tube LED lamp is mounted on the lamp socket by inserting pins protruding from the caps at both ends into grooves provided on the lower surface of the lamp socket, and then rotating about 90 degrees around the axis.

  The lamp support spring is formed by bending a metal plate material into a substantially Ω shape, and is fitted and supported by a tube portion of a straight tube LED lamp.

JP 2013-26032 A

  By the way, in the straight tube fluorescent lamp, the tube portion is made of glass, but in the straight tube LED lamp, the tube portion may be made of a synthetic resin (for example, polycarbonate). When the tube portion is made of a synthetic resin, there is a problem that the surface of the tube portion is easily damaged by the edge of the lamp support spring.

  This invention is made | formed in view of the said subject, and aims at making it hard to damage a pipe | tube part of a straight tube | pipe LED lamp.

  The lighting fixture of the present invention includes a fixture main body disposed on a ceiling, a plurality of lamp sockets attached to the fixture main body and detachably mounted with a base of a straight tube LED lamp, and attached to the fixture main body. One or a plurality of lamp support springs that support the tube portion of the straight LED lamp, and the lamp support springs are a pair of plate-shaped mounting pieces and a pair of hanging parts respectively suspended from both ends in the width direction of the mounting pieces. The holding piece includes an arm piece, a pair of holding pieces that are respectively suspended and formed in an arc shape from the tip of each arm piece, and a pair of guide pieces that protrude away from the tip of each holding piece. The piece is configured so that at least a part of a surface of the straight tube LED lamp facing the tube portion protrudes toward the tube portion at a portion excluding both ends along the axial direction of the straight tube LED lamp. Is the fact characterized.

  In this lighting fixture, it is preferable that the holding piece is formed with one or more protrusions along a circumferential direction of the straight tube LED lamp on a surface facing the tube portion.

  In this lighting apparatus, it is preferable that the holding piece has one or more protrusions on a surface facing the tube portion.

  In this lighting fixture, it is preferable that the holding piece is bent in a direction in which both ends along the axial direction of the straight tube LED lamp are separated from the tube portion.

  In the luminaire of the present invention, when the tube portion of the straight tube LED lamp is elastically sandwiched between a pair of holding pieces, only a part of the holding piece protruding toward the tube portion comes into contact with the tube portion. As compared with the case where the edge of the holding piece comes into contact with the tube portion, there is an effect that the tube portion of the straight tube LED lamp can be hardly damaged.

1 is a cross-sectional view of a lamp support spring and a straight tube LED lamp, showing an embodiment of a lighting fixture according to the present invention. It is an exploded perspective view same as the above. It is a perspective view same as the above. It is a perspective view of the lamp | ramp support spring in the same as the above. (a), (b) is a perspective view which shows the lamp | ramp support spring of the other structure in the same as the above. It is a perspective view of the lamp socket and straight tube | pipe LED lamp in the same as the above. It is a perspective view which shows another embodiment of the lighting fixture which concerns on this invention. It is a perspective view which shows another embodiment of the lighting fixture which concerns on this invention.

  Hereinafter, embodiments of a lighting fixture according to the present invention will be described in detail with reference to the drawings. In the present embodiment, a straight tube LED lamp (hereinafter abbreviated as a lamp) conforming to the Japan Electric Bulb Industry Association standard JEL801 “Straight tube LED lamp system with L-shaped pin cap GX16t-5 (for general lighting)”. 8 is a light source. However, the technical idea of the present invention can also be applied to a lighting fixture that uses a straight tube LED lamp that does not conform to the standard as a light source.

  As shown in FIG. 6, the lamp 8 has a cylindrical tube portion and a pair of caps 82 and 83 provided at both ends of the tube portion. The tube part consists of a semi-cylindrical cover 80 made of a light-transmitting synthetic resin (e.g., polycarbonate) and a semi-cylindrical heat dissipation made of a metal (e.g., aluminum) having a relatively high thermal conductivity and a light weight. And a member 81. The heat dissipating member 81 has a long substrate mounted with a large number of LEDs arranged in a straight line on the inner bottom surface facing the cover 80, and dissipates heat generated by the large number of LEDs to the outside of the tube portion. . On the outer surface of the heat radiating member 81, long concave grooves 810 along the axial direction (longitudinal direction) are provided at equal intervals along the circumferential direction.

  The lighting fixture of this embodiment is provided with the fixture main body 1, two sets of lamp sockets 2 and 3, the reflecting plate 4, and the lamp support spring 5, as shown in FIG.2 and FIG.3. The instrument body 1 is formed into a substantially U-shaped cross section with its lower surface opened by bending a metal plate, and a pair of insertion holes (not shown) through which the mounting bolts 100 provided on the ceiling are inserted are perforated. Has been. That is, when attaching the instrument body 1 to the ceiling, the nut 102 may be tightened with the washer 101 interposed between the attachment bolts 100 inserted through the insertion holes.

  Further, the instrument body 1 has a power supply line insertion hole 10 formed therein at approximately the center in the longitudinal direction for drawing a power supply line 103 connected to an AC power supply made of a commercial power supply and precedingly wired on the back of the ceiling. Furthermore, a terminal block 7 and a power supply device 6 are attached to the lower surface of the instrument body 1 so as to sandwich the power supply line insertion hole 10 in the longitudinal direction. Here, the power line 103 drawn through the power line insertion hole 10 is connected to the terminal block 7. The power supply device 6 houses a printed wiring board (not shown) on which a power conversion circuit (AC / DC converter) or the like for converting AC power supplied from a commercial power source into DC power is mounted in a metal case. Configured. However, since such a power supply device 6 is well known in the art, illustration and description of a detailed configuration and operation are omitted.

  The two types of lamp sockets 2 and 3 that make a pair are compliant with the Japan Electric Bulb Industry Association Standard JEL801 “Straight-tube LED lamp system with L-shaped pin cap GX16t-5 (for general lighting)”. The lamp socket 2 is for power feeding, and the other lamp socket 3 is for grounding. That is, the power supply lamp socket 2 is configured such that a pair of L-shaped pins 820 provided on the base 82 on one side is connected, and a DC voltage is applied between the pair of L-shaped pins 82. The grounding lamp socket 3 is connected to a grounding pin 830 provided on the base 83 on the other side, and mechanically holds the grounding pin 830 and is electrically connected to the instrument body 1 grounded to the ground. Connect to. However, the ground pin 830 connected to the lamp socket 3 may not be electrically connected to the instrument body 1 and may be used only for mechanical holding.

  The reflection plate 4 is formed into a substantially V-shaped cross section by bending a metal plate, and is attached to the instrument body 1 so as to cover the lower surface opening. The reflector 4 is attached to the instrument main body 1 by screwing the thumbscrews 12 to the three fixtures 11 provided at both ends and the center in the longitudinal direction of the instrument main body 1. Further, the reflector 4 is provided with socket insertion holes 40 through which the lamp sockets 2 and 3 are inserted at both ends in the longitudinal direction. Further, an attachment hole 41 for attaching the lamp support spring 5 is provided in the vicinity of the center of the reflection plate 4 in the longitudinal direction.

  As shown in FIG. 4, a lamp support spring (hereinafter abbreviated as a support spring) 5 is a metal plate in which an attachment piece 50, a pair of arm pieces 51, a pair of holding pieces 52, and a pair of guide pieces 53 have spring properties. Are formed integrally in a substantially Ω shape by punching and bending. In the following description, unless otherwise specified, the directions of up, down, left, and right in FIG. 4 are defined.

  The attachment piece 50 is a rectangular flat plate as a whole, and is formed by cutting and raising the first engagement piece 500 and the second engagement piece 501 at the left and right end portions in the center in the front-rear direction. The first engagement piece 500 has a tip portion bent outward (rightward) at a substantially right angle. On the other hand, the second engagement piece 501 is bent at an acute angle inwardly (diagonally to the right). That is, after the first engaging piece 500 is inserted and locked in one mounting hole 41, the second engaging piece 501 is inserted and locked in the other mounting hole 41, whereby the mounting piece 50 (support spring 5) is fixed. Attached to the reflector 4.

  Each arm piece 51 has a rectangular flat plate shape and is bent downward from both left and right ends of the attachment piece 50. However, the arm pieces 51 are slightly inclined so as to narrow each other toward the lower end.

  Each holding piece 52 is formed in an arc shape that hangs downward from the lower end of the mounting piece 50 and protrudes outward. Each guide piece 53 protrudes outward and downward from the lower end of the holding piece 52.

  Here, each holding piece 52 is formed with a protrusion 54 along the circumferential direction (vertical direction) of the lamp 8 on the surface facing the tube portion. In other words, each holding piece 52 is configured such that at least a part of the surface facing the tube portion of the lamp 8 protrudes toward the tube portion at a portion excluding both ends along the axial direction of the lamp 8. . Therefore, when the tube portion of the lamp 8 is elastically sandwiched between the pair of holding pieces 52, only the tip portion of the protrusion 54 comes into contact with the tube portion of the lamp 8 (see FIG. 1). The protrusion 54 is formed not only on the holding piece 52 but also on the guide piece 53.

  Here, since a part of the tube portion of the lamp 8 is made of synthetic resin, the surface of the tube portion is damaged when the edge of the support spring 5 made of a metal material slides on the tube portion when the lamp 8 is attached or detached. Easy to stick. On the other hand, in the present embodiment, only the tip portion of the protrusion 54 contacts the tube portion of the lamp 8, and the edge of the holding piece 52 does not contact the tube portion. Therefore, it is possible to make it difficult to damage the tube portion of the lamp 8 as compared with the case where the edge of the holding piece 52 contacts.

  Further, as shown in FIG. 5A, a plurality (two in the illustrated example) of protrusions 54 may be provided on the holding piece 52 (and the guide piece 53). Alternatively, as shown in FIG. 5B, a substantially hemispherical protrusion 55 may be provided instead of the protrusion 54. However, since the protrusion 54 has a larger contact area with the tube portion of the lamp 8 than the protrusion 55, there is an advantage that the burden on the tube portion due to the spring force of the support spring 5 can be reduced. Instead of providing the protrusions 54 and the protrusions 55, the end edges of the holding pieces 52 in the front-rear direction may be bent in a direction away from the lamp 8 (outward).

  In the present embodiment, a two-lamp type lighting fixture in which two lamps 8 are mounted on the fixture body 1 is illustrated, but as shown in FIG. 7, a single-lamp type lighting fixture in which only one lamp 8 is mounted. It does not matter. Or you may be a lighting fixture of a structure as shown in FIG. The lighting fixture shown in FIG. 8 illuminates an exhibition (for example, a painting) hung on the wall of a museum or an art museum exhibition room, or illuminates a blackboard installed on a lecture room or classroom wall. is there.

1 Appliance body 2 Lamp socket 3 Lamp socket 5 Lamp support spring 8 Straight tube LED lamp
50 Mounting piece
51 arms
52 Holding piece
53 Guide piece
54

Claims (4)

An instrument body disposed on the ceiling, a plurality of lamp sockets attached to the instrument body and removably mounted with a base of a straight tube LED lamp, and a tube of the straight tube LED lamp attached to the instrument body One or more lamp support springs for supporting the part,
The lamp support spring includes a flat plate-shaped mounting piece, a pair of arm pieces hanging from both ends in the width direction of the mounting piece, and a pair of arc-shaped pieces hanging from the tip of each arm piece. A holding piece and a pair of guide pieces projecting away from the tip of each holding piece,
The holding piece is configured such that at least a part of a surface of the straight tube LED lamp facing the tube portion protrudes toward the tube portion at a portion excluding both ends along the axial direction of the straight tube LED lamp. A luminaire characterized by comprising.   The lighting device according to claim 1, wherein the holding piece has one or more protrusions along a circumferential direction of the straight tube LED lamp formed on a surface facing the tube portion.   The lighting device according to claim 1, wherein the holding piece has one or more protrusions formed on a surface facing the tube portion.   The lighting device according to any one of claims 1 to 3, wherein the holding piece is bent at both ends along the axial direction of the straight tube LED lamp in a direction away from the tube portion.

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