Luminaire

Abstract

To provide a luminaire in which a fitting state of a socket with respect to an appliance body can be kept.SOLUTION: A luminaire 10 comprises an appliance body 12, a socket 13 comprising a fitting part 45 fitted to the appliance body 12, and a socket supporting part 55 protruding on a lower side of the fitting part 45 of the socket 13 from the side of the appliance body 12.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE The present invention relates to a lighting fixture. [Background technology]

[0002] 2. Description of the Related Art Conventionally, in a lighting fixture, a mounting portion of a socket for mounting a lamp is attached to the fixture body, thereby attaching the socket to the fixture body.

[0003] If the mounting portion of the socket changes over time or is damaged due to the load applied when installing the socket, there is a concern that the mounting portion of the socket may come off or become detached from the appliance body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-67673 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a lighting fixture capable of maintaining a socket attached to a fixture body. [Means for solving the problem]

[0006] The lighting fixture of the embodiment includes a fixture body, a socket having an attachment portion attached to the fixture body, and a socket support portion that protrudes from the fixture body side below the attachment portion of the socket. Effect of the Invention

[0007] According to the lighting fixture of the embodiment, it is expected that the socket can be maintained in an attached state with respect to the fixture body. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of a lighting fixture according to an embodiment. [Diagram 2] FIG. 2 is a side view of the socket attached to the lighting fixture. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] 1A, 1B, and 1C are front and side views, respectively, showing a support for supporting the socket, and FIG. [Figure 6] FIG. 4 is a front view showing another example of a socket used in the lighting fixture. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment will be described with reference to the drawings.

[0010] 1 and 2, the lighting fixture 10 uses a lamp 11, which is a straight tube lamp, as a light source, and is installed directly on or embedded in the ceiling surface. The lighting fixture 10 is a two-lamp type using, for example, two lamps 11, but it may also be a one-lamp type or a three-or-more-lamp type.

[0011] The lighting fixture 10 includes a fixture body 12, a socket (lamp socket) 13, a socket support 14, a terminal block 15, and a power supply unit 16.

[0012] As shown in FIG. 2, the lamp 11 has bases 21 at both ends of a cylindrical light-transmitting light-emitting section 20. A light-emitting module having a light-emitting element such as an LED mounted thereon is housed inside the light-emitting section 20. A pair of substantially L-shaped terminals 22, which are power supply terminals electrically connected to the light-emitting module, protrude from the base 21 at one end. Although not shown, a substantially T-shaped pin, which is a non-power supply terminal or earth terminal, protrudes from the base at the other end. The lamp 11 is detachably mounted by inserting it between a pair of opposing sockets 13 attached to the fixture body 12 and rotating it, for example, 90° around the lamp axis.

[0013] The fixture body 12 is made of, for example, metal and is formed long. The fixture body 12 has a main body 25 formed in a reflector shape whose cross section in the short direction intersecting the longitudinal direction expands downward, and end plate portions 26 attached to both ends of the main body 25. The main body 25 is provided with an installation hole 27 for attaching to a hanging bolt protruding from a ceiling structure, a wiring hole 28 for passing wiring such as a power line, and the like. As shown in Figures 2 to 4, the end plate portion 26 has an outer end plate portion 29 arranged on the end face of the main body 25, and a socket mounting plate portion 30 arranged opposite the inner surface of the end plate portion 29, which is an inner end plate portion arranged inside the end face of the main body 25. The socket mounting plate portion 30 is provided with a pair of socket mounting holes 31 corresponding to the socket mounting position. The pair of socket mounting holes 31 are arranged at a predetermined interval and substantially parallel to the lower surface of the fixture body 12. The socket mounting hole 31 is formed as, for example, a circular hole.

[0014] The sockets 13 are attached to socket attachment positions of the socket attachment plate portions 30 on both ends of the fixture body 12. The lamps 11 are detachably attached between the opposing sockets 13 on both ends of the fixture body 12. A lamp attachment portion 34 for attaching the lamp 11 is provided in the center of the front surface of the socket 13.

[0015] The socket 13 has a socket body 35 made of insulating synthetic resin, a rotating part 36 rotatably arranged in the socket body 35, and a pair of connecting terminals (not shown) arranged within the socket body 35.

[0016] The socket body 35 has a front portion 37 which is the lamp mounting surface on which the lamp 11 is mounted, a back portion 38, an upper portion 39, a lower portion 40, side portions 41 on both sides, and an inclined portion 42 which is a narrowing portion whose width narrows from the side portions 41 on both sides toward the lower portion 40.

[0017] A circular opening 43 is provided in the center of the front surface 37 of the socket body 35, in which the rotating part 36 is rotatably arranged, and a groove 44 is provided from this opening 43 to the underside 40, into which the terminal 22 of the lamp 11 can be inserted.

[0018] The side surface portions 41 on both sides of the socket body 35 are provided with mounting portions 45 to be attached to the instrument body 12. The mounting portions 45 are disposed at both sides through the center of the rotating portion 36. The mounting portions 45 have a tip end protruding rearward from the back surface portion 38 of the socket body 35 and are attached by being inserted into the socket mounting hole 31 of the socket mounting plate portion 30. The mounting portions 45 have an insertion portion 46 whose tip end protruding rearward from the back surface portion 38 of the socket body 35 is inserted into the socket mounting hole 31 of the socket mounting plate portion 30, and a claw portion 47 which protrudes outward from the tip end side of the insertion portion 46 and engages with the back surface side of the socket mounting plate portion 30. The diameter of the insertion portion 46 including the claw portion 47 on the tip end side is, for example, 3.8 mm, and the hole diameter of the socket mounting hole 31 is, for example, 4.8 mm. The spacing between the pair of mounting portions 45 is a dimension that allows them to be inserted into a pair of socket mounting holes 31, and the spacing between the outermost positions of the claw portions 47 of the pair of mounting portions 45 is greater than the maximum distance between the opposing hole edges of the pair of socket mounting holes 31.

[0019] The rotating part 36 is rotatably disposed within the opening 43 of the socket body 35, and constitutes the lamp mounting part 34 together with the socket body 35. The rotating part 36 is provided with a rotation groove 49 through which the pair of terminals 22 of the lamp 11 can be inserted in the radial direction. The rotating part 36 can rotate integrally with the lamp 11 by rotating the lamp 11 around the lamp axis with the pair of terminals 22 of the lamp 11 inserted into the rotation groove 49. The rotating part 36 has a rotation position where the rotation groove 49 communicates with the groove 44 of the socket body 35 as an attachment / detachment position where the terminals 22 of the lamp 11 can be attached / detached, and a rotation position rotated 90° from the lamp attachment / detachment position as an attachment position where the rotating part 36 rotates integrally with the terminals 22 of the lamp 11 and holds the pair of terminals 22 between the socket body 35.

[0020] The pair of connection terminals are disposed on both sides of an opening 43 in which the rotating portion 36 is disposed within the socket body 35, and are electrically connected to a pair of terminals 22 which rotate together with the rotating portion 36 to the mounting position.

[0021] 2 to 5, the socket support 14 is integrally formed of, for example, a metal plate. The socket support 14 has a flat base portion 52, an upper socket support portion 53 bent and protruding from an upper edge of the base portion 52 toward the front, which is one surface side, a pair of lower socket support portions 55 bent and protruding toward the front from inclined portions 54 between both side edges and the lower edge of the base portion 52, and a pair of locking portions 56 bent and protruding from both side edges of the base portion 52 toward the rear, which is the other surface side opposite the socket support portions 53 and 55.

[0022] The width between both side edges of the base portion 52 is set narrower than the width between the side portions 41 on both sides of the socket body 35 .

[0023] A socket fitting area 57 into which the socket 13 is detachably fitted from the front is formed between the upper socket support part 53 and the pair of lower socket support parts 55 on the front side of the base part 52. The upper socket support part 53 faces or comes into contact with the upper surface part 39 of the socket 13, and the pair of lower socket support parts 55 protrude on both sides of the socket 13 centered on the lamp mounting part 34 and face or come into contact with the inclined part 42 of the socket 13.

[0024] The socket support parts 53, 55 are cut out so that both corners on the tip side are chamfered. The length of the socket support parts 53, 55 protruding forward from the base part 52 is smaller than the front-rear thickness of the socket 13. The lower socket support part 55 is disposed below the locking part 56 and is inclined at approximately the same angle as the inclined part 42 of the socket 13.

[0025] The pair of locking portions 56 are disposed inside the pair of mounting portions 45 of the socket 13 fitted and disposed in the socket fitting region 57, and are capable of being inserted into and locked in the socket mounting hole 31 of the socket mounting plate portion 30. The pair of locking portions 56 are disposed facing each other with a gap between them and the inside of the pair of mounting portions 45. The distance between the opposing inner surfaces of the pair of locking portions 56 is greater than the minimum distance between the opposing hole edges of the pair of socket mounting holes 31, allowing them to be inserted into the socket mounting hole 31. The pair of locking portions 56 are rectangular in shape that is long in the protruding direction, and the protruding length is longer than that of the mounting portions 45.

[0026] 1, the terminal block 15 and the power supply unit 16 are disposed at the center of the underside of the fixture body 12 and are covered by a reflector having a triangular cross section (not shown). A power line that is drawn into the fixture body through a wiring hole is connected to the terminal block 15. The power supply unit 16 converts external power such as commercial AC power supplied through the terminal block 15 into a predetermined lighting power and supplies it to the light-emitting module of the lamp 11 through the socket 13, thereby lighting the lamp 11.

[0027] Next, the operation of lighting fixture 10 will be described.

[0028] When the socket 13 is attached to the instrument body 12, it is attached via a socket support 14.

[0029] The socket 13 is fitted into the socket fitting region 57 of the socket support 14 to combine them, and the pair of mounting portions 45 of the socket 13 and the pair of locking portions 56 of the socket support 14 are inserted into the pair of socket mounting holes 31 of the socket mounting plate portion 30. At this time, the pair of locking portions 56 are first inserted into the pair of socket mounting holes 31, and then the tip sides of the pair of mounting portions 45 are inserted into the pair of socket mounting holes 31.

[0030] Alternatively, first, the pair of locking portions 56 of the socket support 14 are inserted into the pair of socket mounting holes 31 of the socket mounting plate 30. Next, the socket 13 is fitted into the socket fitting region 57 of the socket support 14 to combine them, and the pair of mounting portions 45 of the socket 13 are inserted into the pair of socket mounting holes 31 of the socket mounting plate 30.

[0031] When the tip sides of the pair of mounting portions 45 are inserted into the pair of socket mounting holes 31, when the claw portions 47 at the tip sides of the pair of mounting portions 45 abut the edge of the socket mounting hole 31, the tip sides of the pair of mounting portions 45 are inserted while elastically deforming so as to approach each other, and further, when the claw portions 47 pass through the socket mounting hole 31, the repulsive force of the pair of mounting portions 45 causes the claw portions 47 to engage with the back side of the socket mounting plate portion 30.

[0032] In this manner, the socket 13 is attached to the socket attachment plate portion 30 via the socket support 14 .

[0033] The lamp 11 is mounted between the opposing sockets 13 at both ends of the fixture body 12. In the base 21 at one end of the lamp 11, the pair of terminals 22 are inserted from the groove 44 of the socket 13 into the rotation groove 49 of the rotation part 36, and the lamp 11 is rotated 90° around the lamp axis to mount the lamp 11 in the socket 13. When the lamp 11 is mounted in the socket 13, the pair of terminals 22 are electrically connected to the connection terminals of the socket 13. In the base at the other end of the lamp 11, the pin is inserted from the groove 44 of the socket 13 into the rotation groove 49 of the rotation part 36, and the lamp 11 is rotated 90° around the lamp axis to mount the lamp 11 in the socket 13. In order to remove the lamp 11, the lamp 11 is rotated 90° in the opposite direction to when it was mounted, and the lamp 11 is pulled out from between the opposing sockets 13 at both ends of the fixture body 12 to remove it.

[0034] When lighting power is supplied from the power supply unit 16 to the lamp 11 via the socket 13, the lamp 11 lights up.

[0035] Furthermore, if the mounting portion 45 of the socket 13 becomes deformed or damaged due to changes in the socket 13 over time or the load applied when attaching the socket 13 or the load applied when attaching or removing the lamp 11, there is a concern that the mounting portion 45 of the socket 13 may come off or become detached from the fixture body 12, making it impossible to maintain the attached state of the socket 13. However, even in such a case, the socket 13 is supported by the socket support portions 53, 55 of the socket support body 14, so that the attached state of the socket 13 relative to the fixture body 12 can be maintained.

[0036] As long as there is at least a lower socket support portion 55 that protrudes downward beyond the mounting portion 45 of the socket 13, the socket 13 can be maintained in a mounted state relative to the fixture body 12.

[0037] If an upper socket support part 53 protruding above the socket 13 is provided in addition to the lower socket support part 55, the socket 13 is supported between the upper and lower socket support parts 53, 55, and the lamp mounting part 34 of the socket 13 supported by the lower socket support part 55 does not tilt forward, and the socket 13 can be maintained in an attached state relative to the fixture body 12.

[0038] Furthermore, since the lower socket support portion 55 protrudes on both sides of the socket 13 centered on the lamp mounting portion 34, the rotational load applied to the socket 13 when attaching or detaching the lamp 11 is received by the socket support portions 55 on both sides, thereby reducing the load applied to the mounting portion 45 of the socket 13.

[0039] In addition, when attaching the socket support 14 to the fixture body 12, the socket can be engaged by simply inserting the locking portion 56 of the socket support 14 into the socket mounting hole 31 of the fixture body 12 for mounting the mounting portion 45 of the socket 13, thereby improving assembly workability.

[0040] Furthermore, by using the socket support 14 provided separately from the fixture body 12, the socket support 14 can be utilized when repairing an existing lighting fixture.

[0041] The repair work for this existing lighting fixture includes the steps of removing the existing socket 13 from the fixture body 12, combining the existing socket 13 or a new replacement socket 13 with the socket support 14, and inserting the mounting portion 45 of the socket 13 and the locking portion 56 of the socket support 14 into the socket mounting hole 31 of the fixture body 12 to install it, or includes the steps of removing the existing socket 13 from the fixture body 12, inserting and locking the locking portion 56 of the socket support 14 into the socket mounting hole 31 of the fixture body 12, combining the existing socket 13 or the new replacement socket 13 with the socket support 14, and inserting the mounting portion 45 of the socket 13 into the socket mounting hole 31 of the fixture body 12 to install it.

[0042] 6 shows another example of the socket 13. The socket 13 has groove-shaped mounting sections 45 on both sides of the upper part of the socket body 35 for mounting by sliding it onto the fixture body 12, and also has arc sections 60 on the lower side of the socket body 35, which are narrower sections whose width tapers from the side sections 41 on both sides toward the bottom surface 40. The lamp mounting section 34 is compatible with the GX-type lamp base, and is mounted by inserting a pair of pins.

[0043] The upper socket support portion 53 of the socket support body 14 is positioned above the upper surface portion 39 of the socket 13, and the lower socket support portions 55 on both sides are positioned on both sides of the arc portion 60 on both sides of the socket 13 centered on the lamp mounting portion 34.

[0044] In this socket 13 as well, the socket support parts 53 and 55 that protrude downward beyond the mounting part 45 allow the socket 13 to be maintained in a mounted state relative to the fixture body 12 .

[0045] The socket support parts 53, 55 that support the socket 13 may be provided on the socket support body 14 that is separate from the fixture body 12, or may be provided on the fixture body 12 itself. For example, the socket support parts 53, 55 may be provided together with the socket mounting hole 31 at the socket mounting position of the socket mounting plate part 30.

[0046] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0047] 10 Lighting equipment 11 Lamp 12. Equipment body 13 Socket 14 Socket support 31 Socket mounting hole 34 Lamp mounting section 45 Mounting part 55 Socket support 56 Locking part

Claims

1. An instrument body; A socket having a mounting portion attached to the device body; a socket support portion that protrudes from the device body side downward beyond the mounting portion of the socket; A lighting fixture comprising:

2. The socket has a lamp mounting portion in which a lamp is mounted, The socket support portion protrudes downward from the mounting portion of the socket and on both sides of the socket centered on the lamp mounting portion.

2. A lighting device according to claim 1.

3. A socket support body is provided separately from the instrument body and has the socket support portion, The device body has a socket mounting hole into which the mounting portion of the socket is inserted and mounted, The socket support has a locking portion that is inserted into and locked in the socket mounting hole of the appliance body.

2. A lighting device according to claim 1.

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