JP2012043620A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of preventing falling of an LED lamp.SOLUTION: The lighting fixture is provided with a socket 2 on which a base 12 of the LED lamp 1 is installed detachably, an adapter 3 on which the socket 2 is installed, and a fixture body 4 which holds mechanically the socket 2 through the adapter 3. The adapter 3 is provided with a side plate 31 to be fixed to the fixture body 4 and a socket cover 32 which is fixed to the adapter 3 and is opposed to the LED lamp 1 installed on the socket 2, on the lower side in perpendicular direction.

Description

  The present invention relates to a lighting apparatus using an LED lamp as a light source.

  Conventionally, many fluorescent lamps have been used as a light source for lighting fixtures installed indoors or outdoors. In general, a straight tube type fluorescent lamp is filled with a discharge gas, and a phosphor body is coated on the inner surface, and is provided at both ends in the longitudinal direction of the lamp body to connect to a power source. And a base having a pair of power supply terminals. Such a fluorescent lamp is attached to a socket by inserting each power supply terminal into a pin hole of a pair of sockets attached to the instrument body. Then, each power supply terminal of the fluorescent lamp is connected to a commercial power supply via a lighting device, so that the fluorescent lamp is supplied with lighting power and lit.

  In recent years, with the increase in luminous efficiency of LEDs (light emitting diodes), LED lamps with low power consumption and long life can be used as light sources for lighting fixtures. There is something like that. Such an LED lamp is configured to include, for example, a lamp body and a base similar to those of a conventional straight tube type fluorescent lamp so that it can be used with existing lighting equipment for fluorescent lamps. However, unlike a conventional fluorescent lamp, a substrate on which a plurality of LEDs are mounted on one surface is accommodated inside the lamp body. Thus, since an LED lamp can be attached to an existing fluorescent lighting fixture, it is not necessary to manufacture a new lighting fixture for the LED lamp.

JP 2009-43447 A

  By the way, in the conventional lighting equipment for fluorescent lamps, since the standards such as the shape and dimensions of the lamp body and the base of the fluorescent lamp are determined, the standard of the socket in which the fluorescent lamp is mounted is also determined. The socket for a fluorescent lamp is integrally provided with a structure for mounting the fluorescent lamp and a structure for attaching to the fixture body. Therefore, the fluorescent lamp can be detachably mounted simply by attaching the socket to the fixture body of the lighting fixture.

  On the other hand, the appearance of an LED lamp as a light source for illumination as described above is very recent, and the standard of the LED lamp is not fixed like the conventional fluorescent lamp. For this reason, the shape and size of the lamp body of the LED lamp, the shape and size of the base, and the like vary depending on the manufacturer (manufacturer) that manufactures the LED lamp. Further, when the LED lamp is miniaturized as the output of the LED is increased, the shapes and dimensions of the lamp body and the base are changed according to the miniaturization.

  Therefore, it is not possible to use a conventional lighting fixture socket for fluorescent lamps, and it is necessary to prepare sockets having structures corresponding to various LED lamps. Furthermore, regarding the fixture body of the lighting fixture, there is a possibility of adopting a fixture main body having another form as well as a conventional fluorescent lamp fixture body. Therefore, it is necessary to prepare a socket having a structure corresponding to each instrument body, and as a result, it is necessary to separately prepare sockets corresponding to variations of LED lamps and instrument bodies that will increase in the future. There was a problem. In order to solve this problem, the inventors of the present application have devised a lighting fixture in which a structure for mounting an LED lamp and a structure for mounting on the fixture body are provided separately by a socket and an adapter. Yes.

  By the way, the LED lamp is heavier than the conventional fluorescent lamp because the substrate is housed therein unlike the conventional fluorescent lamp. For this reason, for example, when performing an operation of replacing the LED lamp, it is necessary to pay more attention than in the case of the conventional fluorescent lamp replacement operation so that the LED lamp does not fall during the operation.

  This invention is made | formed in view of said point, and it aims at providing the lighting fixture which can prevent the fall of an LED lamp.

  The lighting fixture of the present invention includes a socket to which a base of an LED lamp is detachably attached, an adapter to which the socket is attached, and a fixture main body that mechanically holds the socket via the adapter. Is provided with a fixing part fixed to the instrument body, and a fall prevention part which is fixed to the adapter and mounted on the socket and faces the LED lamp on the lower side in the vertical direction. To do.

  In this lighting fixture, it is preferable that the fall prevention portion is in contact with the LED lamp mounted on the socket and forms a heat dissipation path through the fixing portion and the fixture body.

  In this lighting apparatus, it is preferable that the fall prevention unit includes a socket cover that covers the base of the LED lamp and the socket in a state where the LED lamp is mounted in the socket.

  In this lighting apparatus, the socket cover is preferably made of a light-transmitting material.

  In the present invention, since the fall prevention part is fixed to the adapter and faces the LED lamp on the lower side in the vertical direction, the downward movement of the LED lamp in the vertical direction can be restricted. Therefore, for example, when the LED lamp is replaced, even if the LED lamp is removed from the socket, the movement of the LED lamp to the lower side is restricted by the fall prevention unit, thereby preventing the LED lamp from dropping. be able to.

It is a figure which shows embodiment of the lighting fixture which concerns on this invention, (a) is a principal part perspective view before attaching a socket to an adapter, (b) is a principal part perspective view before attaching an adapter to an instrument main body, c) is a perspective view of an essential part after the adapter is attached to the instrument body. It is a figure which shows the attachment method to the adapter of a socket same as the above, (a) is a front view, (b) is the A-A 'line cross-sectional arrow view in (a). It is a perspective view which shows an LED lamp same as the above. It is a figure which shows the attachment method to the adapter of a socket cover same as the above, (a) is a perspective view which shows an adapter and a socket cover, (b) is a principal part perspective view before attaching an LED lamp and a socket cover, (c ) Is a perspective view of the main part after the LED lamp and the socket cover are attached. It is a disassembled perspective view which shows the state before an assembly same as the above. It is a whole perspective view which shows the state which attached the LED lamp same as the above.

  Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. In the following description, the vertical and horizontal directions in FIG. 1A are defined as the vertical and horizontal directions, the front side of the paper is defined as the front direction, and the back side of the paper is defined as the rear direction. In this embodiment, as shown in FIG. 1A, a pair (one in the figure) of sockets 2 to which a straight tube type LED lamp 1 is detachably attached, and an adapter 3 to which the socket 2 is attached, And an instrument body 4 that mechanically holds the socket 2 via the adapter 3.

  As shown in FIG. 3, the LED lamp 1 protrudes from a straight tube lamp body 10, caps 11 and 12 provided at both ends in the longitudinal direction of the lamp body 10, and the caps 11 and 12. It is composed of a pair of round bar-shaped power supply terminals 13 and a ground terminal 14. Although not shown, a substrate on which a plurality of LEDs are mounted is housed inside the lamp body 10, and the anode and cathode of these LEDs and each power supply terminal 13 are electrically connected. Thus, the LED lamp 1 is lit by supplying lighting power to each LED via the power supply terminal 13.

  As shown in FIG. 1 (a), the socket 2 is formed integrally with a socket body 20 having a box shape whose outer shape is formed in a U shape, and an adapter 3 which is formed on the upper end of the socket body 20 to be described later. It is comprised from the rectangular-plate-shaped base part 21 mounted in the outer periphery of the hole 30A. The lower end portion of the socket body 20 is provided with an insertion recess 20A that allows the lower surface and the front surface to open and allows the head portion 14A of the grounding terminal 14 of the LED lamp 1 to be slidably inserted. A pair of blade receivers 22 are provided inside the insertion recess 20A to mechanically hold the head portion 14A of the grounding terminal 14 therebetween. The blade receiver 22 is provided at the other end of an L-shaped connecting piece 23 in which a grounding bin 24 is provided at one end. These members are integrally formed of a metal plate made of a conductive material such as copper. The grounding pin 24 is provided so as to protrude downward from the base portion 21, and is inserted into a pin insertion hole 30 </ b> B of the adapter 3 described later when the socket 2 is attached to the adapter 3.

  Further, on both side surfaces of the socket body 20 in the short direction (left-right direction), projecting portions 20B having a triangular cross section projecting outward are integrally formed. Here, the width dimension in the short direction of the socket body 20 is smaller than the width dimension in the direction of the mounting hole 30 </ b> A of the adapter 3. On the other hand, the width dimension in the short direction of the socket body 20 at the position where each protrusion 20A is provided is larger than the width dimension in the direction of the mounting hole 30A. However, the socket body 20 can be inserted into the mounting hole 30A by pressing each protrusion 20B against the inner peripheral edge of the mounting hole 30A.

  In the above description, the socket 2 on the side to which the grounding terminal 14 is connected is described among the pair of sockets 2, but the structure of the other socket 2 is basically the same. However, in the other socket 2, the structure of the insertion recess 20 </ b> A and the blade receiver 22 is a structure for mechanically holding the power feeding terminal 13. Since the structure for mechanically holding the power supply terminal 13 is the same as the structure of a conventional fluorescent lamp socket and is well known in the art, a detailed description thereof is omitted here.

  As shown in FIG. 1A, the adapter 3 is formed by integrally forming a square main plate 30 and a pair of rectangular side plates 31 that protrude upward from two opposing sides of the main plate 30. . The main plate 30 is provided with a rectangular attachment hole 30A that penetrates in the thickness direction and allows the socket body 20 of the socket 2 to be inserted. In the vicinity of the mounting hole 30A of the main plate 30, a circular pin insertion hole 30B that penetrates in the thickness direction and allows the grounding pin 24 of the socket 2 to be inserted is provided. Further, rectangular cutouts 30 </ b> C are provided at the left and right ends of the front side of the main plate 30 so that the front ends are open and the hooking claws 32 </ b> C of the socket cover 32 described later can be inserted. Further, a rectangular claw insertion hole 30D that penetrates in the thickness direction and allows insertion of a hooking claw 32D of a socket cover 32 described later is provided on the rear side of the mounting hole 30A of the main plate 30.

  Each side plate 31 is provided with a plurality of (three in the drawing) elongated slits 31A provided by cutting out from one end edge (right end edge) in the longitudinal direction to the front end of the other end edge (left end edge). Yes. These slits 31 </ b> A are juxtaposed along the direction (vertical direction) perpendicular to the construction surface 5 such as a ceiling to which the instrument body 4 is attached in each side plate 31. One end of each slit 31A in the longitudinal direction is opened, and an attachment piece 40A (described later) of the instrument body 4 can be slidably inserted from the opening. Therefore, each side plate 31 including each slit 31 </ b> A becomes a fixing portion to which the instrument body 4 is fixed. In addition, the opening part of each slit 31A is each provided with the taper 31B so that the width dimension of an up-down direction becomes large as it goes outside. Thus, when the adapter 3 is attached to the mounting base portion 40 to be described later of the instrument body 4, the attachment piece 40A can be inserted into each slit 31A along each taper 31B. Can be attached.

  Here, as shown in FIG. 1A, the adapter 3 is provided with a socket cover 32 that covers the socket 2 inserted into the mounting hole 30A. The socket cover 32 is made of, for example, polycarbonate, and as shown in FIGS. 1A and 4A, a side wall 32A curved in a U shape in a plan view and a rear wall 32B having an outer shape formed in a U shape. And formed integrally. For this reason, the socket cover 32 has a shape in which the front surface and the upper surface are open to the outside. A hooking claw 32C having a triangular cross section that protrudes upward is integrally formed at the upper end of the front side of the side wall 32A. Further, a hooking claw 32D having a triangular cross section protruding upward is integrally formed at the upper end portion of the rear wall 32B. These hooking claws 32C and 32D are inserted into a pair of notches 30C and claw insertion holes 30D of the adapter 3, respectively, and hooked to the peripheral edge of each notch 30C and the peripheral edge of the claw insertion hole 30D. 32 is attached and fixed to the adapter 3. In the above description, the socket cover 32 that covers one socket 2 of the pair of sockets 2 has been described, but the structure of a socket cover (not shown) that covers the other socket 2 is basically the same. .

  As shown in FIG. 5, the instrument body 4 is formed of a long box having an open bottom surface, and is hung from the upper surface of the top surface in the longitudinal direction through the embedded hole 50 from above the construction surface 5. 4A of circular electric wire insertion holes for letting the power supply line 51 pass are provided. In addition, on both sides of the wire body insertion hole 4A in the longitudinal direction of the upper surface of the instrument body 4, there are bolt insertion holes 4B for passing the suspension bolts 52 suspended from the upper side of the construction surface 5 through the embedded holes 50, respectively. Is provided. Further, in the vicinity of the electric wire insertion hole 4 </ b> A inside the instrument main body 4, a connector to which the power line 51 is connected and a circuit component 41 constituting a lighting device are provided. The lighting device converts AC power from a commercial power source (not shown) supplied via the power line 51 into DC power necessary for lighting the LED lamp 1, and the DC power is converted via the socket 2. The LED lamp 1 is supplied. Since such a lighting device is well known in the art, a detailed description thereof is omitted here.

  At both ends in the longitudinal direction of the instrument body 4, as shown in FIG. 5, mounting base portions 40 for mounting and fixing the adapter 3 are provided. As shown in FIG. 1A, the mounting base 40 is formed, for example, by bending a metal plate into a U-shaped cross section, and a mounting piece 40A inserted into each slit 31A of the adapter 3 is integrally formed at the lower end edge thereof. Is formed. Thus, the adapter 3 is attached and fixed to the instrument body 4 by inserting each attachment piece 40A of the attachment base 40 into each slit 31A of the adapter 3.

  Further, on both sides of the central portion in the longitudinal direction of the instrument main body 4, as shown in FIG. 5, fixtures 42 for attaching the instrument main body 4 into the embedding holes 50 of the construction surface 5 are respectively provided. Yes. The attachment 42 is made of, for example, a metal material, and a screw hole in which an internal thread portion (not shown) to which an attachment screw 70 for attaching the reflector 6 described later to the instrument body 4 is fastened is formed on the lower surface thereof. 42A is provided. In addition, a pair of support pieces 42 </ b> B are integrally formed on the fixture 42 so as to bend downward from both sides along the lateral direction of the instrument body 4. These support pieces 42 </ b> B are pushed by the inner peripheral edge of the embedding hole 50 and bent in a direction approaching each other when the instrument body 4 is embedded in the embedding hole 50 of the construction surface 5. Thus, the instrument body 4 is fixed in the embedded hole 50 because the inner peripheral edge of the embedded hole 50 is pressed by the biasing force in the direction in which each support piece 42B returns.

  As shown in FIG. 5, the reflector 6 is made of, for example, an aluminum material, and is formed in a long box having a lower surface that opens and an opening area that increases toward the lower surface. The inner surface of the reflector 6 is painted with a reflecting material (not shown), thereby forming a reflecting surface that reflects light from the LED lamp 1 downward. Further, rectangular socket insertion holes 6A for arranging the socket 2 and the heat radiating portion 32 inside the reflector 6 are provided at both ends in the longitudinal direction of the upper surface of the reflector 6 (in the drawing, 1A). One). Further, a pair of circular screw insertion holes 6 </ b> B into which the mounting screws 70 are inserted are provided on the upper surface of the reflector 6 so as to correspond to the respective screw holes 42 </ b> A of the mounting tool 42.

  Hereinafter, the assembly method of the present embodiment will be described with reference to the drawings. First, as shown in FIGS. 2A and 2B, the lower end of the socket body 20 is inserted into the mounting hole 30 </ b> A of the adapter 3 from above, and the protrusions 20 </ b> B of the socket body 20 and the base portion 21 are connected. The socket 2 is attached to the adapter 3 by sandwiching the periphery of the attachment hole 30 </ b> A of the adapter 3. At this time, the grounding pin 24 of the socket 2 is inserted into the pin insertion hole 30 </ b> B of the adapter 3. Thus, the socket 2 is attached to the adapter 3 in the form as shown in FIG. Next, the slits 31 </ b> A of the adapter 3 are inserted into the mounting pieces 40 </ b> A of the mounting base portion 40 of the instrument body 4 from the opening portion, and are slid so as to push in the adapter 3. Thus, the adapter 3 is fixedly attached to the mounting base portion 40 of the instrument body 4 in the form as shown in FIG. In the above description, the case where one socket 2 and the adapter 3 are attached to one end of the instrument body 4 in the longitudinal direction has been described. Can be attached to the end.

  Next, as shown in FIG. 5, the power supply line 51 and the two suspension bolts 52 suspended from above the construction surface 5 are respectively inserted into the electric wire insertion hole 4 </ b> A and the pair of bolt insertion holes 4 </ b> B of the instrument body 4. insert. And while connecting the power wire 51 to the connector of the circuit component 41 and tightening the nut 72 in the state which fitted the washer 71 to each suspension bolt 52 from the lower side of the instrument main body 4, the instrument main body 4 of the construction surface 5 is attached. It can be embedded in the embedded hole 50. Thereafter, the sockets 2 and 6 are inserted into the socket insertion holes 6A of the reflector 6, and the mounting screws 70 are inserted into the screw insertion holes 6B of the reflector 6 and the screw holes 42A of the fixture 42, and tightened. The reflector 6 can be attached to the instrument body 4, and the assembly of this embodiment is completed. The LED lamp 1 can be attached to the present embodiment by mounting the caps 11 and 12 of the LED lamp 1 in the sockets 2.

  Here, as shown in FIGS. 4B and 4C, the socket cover 32 is attached to the adapter 3 in a state where the LED lamp 1 is attached to the socket 2, so that not only the socket 2 but also the base of the LED lamp 1 is attached. 12 is also covered with the socket cover 32 (see FIG. 6). Therefore, the socket cover 32 becomes a “fall prevention part”.

  As described above, in the present embodiment, since the socket cover 32 is fixed to the adapter 3 and faces the LED lamp 1 on the lower side, the downward movement of the LED lamp 1 can be restricted. Accordingly, for example, when the LED lamp 1 is replaced, even if the LED lamp 1 is detached from the socket 2, the downward movement of the LED lamp 1 is restricted by the socket cover 32. Can be prevented from falling.

  By the way, the socket cover 32 may be formed of a material having thermal conductivity (for example, a metal material such as an aluminum material), and may be brought into contact with the LED lamp 1 when attached to the adapter 3. In this case, since a heat radiation path is formed through the side plate 31 and the instrument body 4, the heat accumulated in the LED lamp 1 can be radiated to the instrument body 4 through the socket cover 32 and the side plate 31. Therefore, the heat generated from the LEDs stored in the LED lamp 1 can be easily radiated to the outside of the LED lamp 1. Further, the socket cover 32 may be formed of a light-transmitting material such as acrylic resin. In this case, since the light can pass through the socket cover 32, the light can be irradiated to the outside also from the portion covered with the socket cover 32 of the LED lamp 1.

  Here, as a material constituting the socket cover 32, it is desirable to use a transparent polycarbonate having a strength capable of withstanding the fall prevention of the LED lamp 1 and also having flame retardancy (UL94 V-0). Note that when the socket cover 32 is formed of a light-transmitting material, it may be colorless and transparent or white.

1 LED lamp 12 Base 2 Socket 3 Adapter 31 Side plate (fixed part)
31A slit (fixed part)
32 Socket cover (fall prevention part)
4 Instrument body

Claims (4)

  A socket to which a base of an LED lamp is detachably mounted; an adapter to which the socket is attached; and an instrument main body that mechanically holds the socket via the adapter; A lighting fixture, comprising: a fixed portion to be fixed; and a fall prevention portion which is fixed to the adapter and mounted on the socket, and which faces the lower side in a vertical direction.   The lighting apparatus according to claim 1, wherein the fall prevention part contacts the LED lamp mounted on the socket and forms a heat dissipation path through the fixing part and the apparatus body.   The lighting device according to claim 1, wherein the fall prevention unit includes a socket cover that covers the base of the LED lamp and the socket in a state where the LED lamp is mounted in the socket.   The lighting apparatus according to claim 3, wherein the socket cover is made of a light-transmitting material.

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