JP6074850B2 - lighting equipment - Google Patents

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, when attaching / detaching the straight tube LED lamp to / from the lamp socket, the longer the overall length, the more often the operator works with the vicinity of the center of the straight tube LED lamp. In this case, since the distance between the base of the straight tube LED lamp and the worker is increased, it is difficult to understand how far to insert the pin when inserting the pin into the groove of the lamp socket when the straight tube LED lamp is mounted. Also, when removing the straight tube LED lamp, it is difficult to understand how far to rotate to remove the pin from the groove of the lamp socket. As a result, there is a problem that workability of attaching / detaching the straight tube LED lamp is lowered.

  This invention is made | formed in view of the said subject, and aims at suppressing the workability | operativity fall of attachment / detachment in case the full length of a straight tube | pipe LED lamp is relatively long.

  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 more lamp support springs that support the tube portion of the straight tube LED lamp, and the lamp socket has an insertion / extraction position where a pin protruding from the base can be inserted / extracted, and the pin cannot be inserted / extracted. In addition, the straight tube LED lamp is configured to be rotatable around an axis between the mounting position where the power supply pin is electrically connected, and the lamp support spring is formed in an arc shape. It has a pair of holding pieces for elastically holding the tube portion, and a display unit for displaying that the straight tube LED lamp is in the insertion / extraction position.

  In this lighting apparatus, it is preferable that the display unit is provided on a lower side of at least one of the pair of holding pieces than a portion farthest from the other holding piece.

  In the lighting fixture of the present invention, it can be determined that the straight tube LED lamp is in the insertion / extraction position when the display portion of the lamp support spring overlaps a predetermined portion of the straight tube LED lamp as viewed from the radial direction of the straight tube LED lamp. Therefore, there is an effect that it is possible to suppress a decrease in workability of attachment / detachment when the total length of the straight tube LED lamp is relatively long.

1 is a perspective view of a lamp socket, 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. It is sectional drawing of a lamp support spring and a straight tube LED lamp in the same as the above. It is a perspective view of the lamp | ramp support spring and straight tube | pipe LED lamp of another structure from the lamp socket in the same as the above. It is a perspective view of the lamp | ramp socket in the same as the lamp support spring and straight tube | pipe LED lamp of another structure further different. It is a perspective view of the lamp | ramp socket in the same as the above, and the lamp support spring and straight tube | pipe LED lamp of another structure. 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. 1, the lamp 8 includes 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.

  Of the two types of lamp sockets 2 and 3 that form a pair, one 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.

  When the lamp 8 is mounted, the ground pin 830 is connected to the lamp socket 3 and then the L-shaped pin 820 is inserted into the groove (not shown) of the lamp socket 2 from below. Thereafter, when the lamp 8 is rotated approximately 90 degrees and moved from the insertion / extraction position to the mounting position, the L-shaped pin 820 is electrically and mechanically connected to a contact (not shown) of the lamp socket 2. On the other hand, when the lamp 8 is removed, the lamp 8 is rotated in the direction opposite to that at the time of mounting and moved from the mounting position to the insertion / extraction position (see FIG. 1), and then the L-shaped pin 820 is removed from the groove of the lamp socket 2. Good. However, such lamp sockets 2 and 3 are conventionally well-known as lamp sockets conforming to the Japan Electric Bulb Industry Association standard JEL801 “L-shaped pin cap GX16t-5 straight tube LED lamp system (for general lighting)”. Therefore, illustration and description of a detailed structure are omitted.

  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. In addition, each holding piece 52 is formed with a ridge 54 along the circumferential direction (vertical direction) of the lamp 8 on the surface facing the tube portion. That is, 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. 5).

  Each guide piece 53 protrudes outward and downward from the lower end of the holding piece 52. The protrusion 54 is formed not only on the holding piece 52 but also on the guide piece 53.

  By the way, the holding piece 52 has a display portion 55 formed of a substantially trapezoidal protrusion protruding from both front and rear side edges. On the other hand, the heat radiation member 81 of the lamp 8 has a linear mark 811 formed at the center in the circumferential direction. The mark 811 is formed, for example, by applying a paint to the bottom surface of the groove 810 or the surface of the portion between the adjacent grooves 810.

  That is, as shown in FIG. 1, when the display portion 55 of the support spring 5 overlaps the mark 811 when viewed from the radial direction of the lamp 8, it can be determined that the lamp 8 is in the insertion / extraction position. In particular, even when the length is long, it is possible to suppress a decrease in workability of attachment / detachment. However, even when the mark 811 is not formed on the heat dissipating member 81 of the lamp 8, for example, it is possible to determine that the lamp 8 is in the insertion / extraction position when the central groove 810 and the display unit 55 overlap. .

  The display unit 55 is not necessarily a protrusion. For example, as shown in FIG. 6, a through hole penetrating the holding piece 52 may be used as the display unit 55. Alternatively, a mark (Δ) provided on the surface of the holding piece 52 as shown in FIG. Such a mark can be formed by an appropriate method such as printing, labeling or engraving.

  Further, when working in a situation where the instrument body 1 is looked up, the display portion 55 of the support spring 5 may be hidden behind the lamp 8 and become difficult to see. Therefore, the display unit 55 is provided on the lower side of at least one of the pair of holding pieces 52 than the portion farthest from the other holding piece 52 (the portion where the distance between the holding pieces 52 is the largest). It is preferable (see FIG. 8). Thereby, even when working in a situation where the instrument body 1 is looked up, it is possible to prevent the display portion 55 of the support spring 5 from being hidden by the lamp 8 and becoming difficult to see.

  In addition, although this embodiment illustrated the two-lamp type lighting fixture which mounts the two lamps 8 in the fixture main body 1, as shown in FIG. 9, the one-lamp type lighting which mounts only one lamp 8 is shown. It may be an instrument. Or you may be a lighting fixture of a structure as shown in FIG. The lighting apparatus shown in FIG. 10 illuminates, for example, an exhibit (for example, a painting) hung on the wall of a museum or an art museum, 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
55 Display

Claims (2)

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 socket includes the straight pipe between an insertion / extraction position where a pin protruding from the base can be inserted / extracted and an attachment position where the pin cannot be inserted / extracted and the pin for power feeding is electrically connected. It is configured to hold the LED lamp so as to be rotatable around its axis,
The lamp support spring includes a pair of holding pieces that are formed in an arc shape and elastically sandwich the tube portion, and a display unit that displays that the straight tube LED lamp is in the insertion / extraction position. lighting equipment.   The lighting device according to claim 1, wherein the display unit is provided on at least one of the pair of holding pieces below a portion farthest from the other holding piece.

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