JP2008166183A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire 11 allowing a reflector 15 to be electrically connected to a luminaire body 13 and grounded simultaneously with mounting of the reflector 15 to the luminaire body 13 even when a general-purpose screw 16 is used without using a special screw. <P>SOLUTION: A screw part 35 of the screw 16 is screwed to a screw mounting hole 23 of the luminaire body 13 through a screw insertion hole 31 of the reflector 15, and the reflector 15 is fastened and attached between a head part 36 of the screw 16 and the luminaire body 13. The screw part 35 of the screw 16 is screwed to the screw mounting hole 23 of the luminaire body 13 through the screw insertion hole 31 of the reflector 15, and thereby electrically connected to the luminaire body 13 by peeling off the coating of the mounting hole 23 by the screw part 35. The head part 36 of the screw 16 contacts a projecting part 32 projecting from a peripheral position of the screw insertion hole 31 of the reflector 15, and the head part 36 of the screw 16 is electrically connected to the reflector 15 by peeling off the coating of the projecting part 32. The reflector 15 is grounded by being electrically connected to the luminaire body 13 through the screw 16. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lighting fixture that connects a reflector to a fixture body and grounds the reflector.

  Conventionally, in a lighting fixture, a metal ballast case or metal reflector is attached to a metal fixture body using screws, and the ballast case or reflector is electrically connected to the fixture body. Has been grounded.

  Since these metal bodies, ballast cases, reflectors, and the like have their metal surfaces painted in white, it is necessary to peel off the paint when attaching with screws.

For example, when attaching a ballast case to the instrument body, use a special screw with a serration processing part between the screw part and the head, and press-fit the serration processing part of this special screw into the fixing hole of the instrument body. The ballast case is attached to the main body of the instrument by screwing the nut through the ballast case and the conduction plate electrically connected to the ballast case by peeling off the paint and making it conductive. The instrument body and the ballast case are connected to each other through the ground to take a ground. By using this special screw, another part for peeling off the coating is not required (for example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 7-169320 (page 4, FIG. 1-3)

  As mentioned above, the special screw is used to peel off the paint to make it conductive, but the special screw is more expensive than a general-purpose screw and has a problem that it is difficult to procure if lost. .

  The present invention has been made in view of such points, and even if a general-purpose screw is used without using a special screw, the reflector can be grounded by conducting the reflector to the instrument body simultaneously with the attachment of the reflector to the instrument body. It aims at providing a lighting fixture.

  The lighting fixture according to claim 1 is a fixture main body having a screw mounting hole; a screw insertion hole provided corresponding to a position of the screw mounting hole of the fixture main body; and a peripheral position of the screw insertion hole with respect to the fixture main body. A reflector having a projecting portion protruding to the opposite side; a screw portion screwed into a screw mounting hole of the instrument body through a screw insertion hole of the reflector, and a head portion engaged with a peripheral position of the screw insertion hole of the reflector And a screw whose head is in contact with the protrusion and is electrically connected to the reflector.

  The lighting fixture is, for example, a ceiling-mounted lighting fixture, a suspended lighting fixture, an embedded lighting fixture, and the like, and a straight tube fluorescent lamp, a ring fluorescent lamp, and other lamps are used.

  The instrument body is made of, for example, metal and the surface is painted white.

  The reflector is made of, for example, metal and has a white surface, and is formed in a reflective shade shape, a substantially V-shaped cross section, or the like. The screw insertion hole is formed in, for example, a round hole or a long hole through which a screw portion of a screw can be inserted. For example, the protrusion has a substantially triangular shape or a curved shape, and is provided at one or a plurality of positions around the screw insertion hole. The peripheral position of the screw insertion hole includes a position continuous to the inner edge of the screw insertion hole and a position away from the screw insertion hole as long as the head of the screw can be contacted.

  As the screw, for example, a general-purpose flange screw with a flange provided on the head is used.

  And since the protrusion protrudes on the opposite side of the instrument body at the peripheral position of the screw insertion hole of the reflector, it is difficult to paint the tip of the protrusion even if the reflector is painted. It becomes easy to form the tip to be conductive, and the screw head that is screwed into the screw mounting hole of the instrument body through the screw insertion hole of the reflector comes into contact with the tip of the protrusion, so that the screw and the reflector Is conducted. Even when the projection is coated, stress or friction force concentrates on the tip of the projection, so that the coating is easily peeled off and the screw and the reflector are conducted. Therefore, using a general-purpose screw, the reflector is conducted to the instrument body and grounded simultaneously with the attachment of the reflector to the instrument body.

  The lighting fixture according to claim 2 is the lighting fixture according to claim 1, wherein the screw insertion hole of the reflector is provided in a long hole shape, and the protrusion is provided in the central region of the long side of the insertion hole. .

  The direction along the long side of the long hole-shaped screw insertion hole corresponds to, for example, the longitudinal direction of the instrument body.

  By providing the protrusion in the central area of the long side of the long hole-shaped insertion hole, the head of the screw is used as the protrusion regardless of the positional relationship between the screw insertion hole and the screw screwed into the screw mounting hole. Make contact.

  The lighting fixture according to claim 3 is the lighting fixture according to claim 1 or 2, wherein the protrusion of the reflector is provided continuously from the inner edge of the screw insertion hole.

  And it becomes possible to process a projection part simultaneously when forming the screw insertion hole of a reflector.

  According to the lighting fixture of claim 1, since the protruding portion is protruded on the opposite side of the fixture main body at the peripheral position of the screw insertion hole of the reflector, the tip of the protruding portion is difficult to paint. It becomes easy to form the tip of the part to be conductive, and the screw head that is screwed into the screw mounting hole of the instrument body through the screw insertion hole of the reflector comes into contact with the tip of the protruding part, so that the screw can be easily And the reflector can be made conductive. Even when the projection is coated, stress or friction force concentrates on the tip of the projection, so that the coating can be easily peeled off and the screw and the reflector can be made conductive. Therefore, even if a general-purpose screw is used without using a special screw, the reflector can be electrically connected to the instrument body and grounded simultaneously with the attachment of the reflector to the instrument body.

  According to the lighting fixture of claim 2, in addition to the effect of the lighting fixture of claim 1, in order to cope with the variation in the positional relationship between the screw insertion hole of the reflector and the screw mounting hole of the fixture body, Even when the screw insertion hole of the body is provided in the shape of a long hole, the protrusion is provided in the central region of the long side of the screw insertion hole, so that the positional relationship between the screw insertion hole and the screw screwed into the screw mounting hole is Regardless, the head of the screw can be reliably brought into contact with the protrusion.

  According to the luminaire of claim 3, in addition to the effect of the luminaire of claim 1 or 2, in order to make the protrusion of the reflector continue from the inner edge of the screw insertion hole, the screw insertion hole of the reflector is formed. In doing so, the protrusions can be processed at the same time, and the productivity can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 is a cross-sectional view of the lighting fixture in an exploded state, FIG. 2 is an enlarged cross-sectional view of the screw insertion hole portion of the reflector of the lighting fixture, FIG. 3 is an enlarged bottom view of the screw insertion hole portion of the reflector, and FIG. FIG. 5 is a perspective view of the lighting fixture.

  As shown in FIGS. 1 and 5, the luminaire 11 is a single-lamp ceiling-mounted luminaire that uses one straight tube fluorescent lamp 12 as a lamp, and has a long luminaire body 13. Sockets 14 for connecting the straight tube fluorescent lamps 12 are disposed at both ends of the instrument body 13 in the longitudinal direction, and a long reflector 15 is attached to the lower surface of the instrument body 13 with a plurality of screws 16.

  The instrument body 13 has a substantially U-shaped cross-section main body portion 21 having an open bottom surface, and a cover portion 22 attached to cover the bottom surface opening of the main body portion 21. The main body portion 21 and the cover portion 22 are It is made of conductive metal and has a white coating on the surface. When the main body portion 21 and the cover portion 22 are combined, the metal portions come into contact with each other and are electrically connected, and grounding is taken.

  A lighting unit, a terminal block, and the like (not shown) are accommodated inside the instrument main body 13, and sockets 14 are attached so as to protrude downward from the lower surfaces of both ends of the instrument main body 13 in the longitudinal direction. Screw attachment holes 23 into which screws 16 are screwed are formed at two locations near both ends of the cover portion 22.

  Further, as shown in FIGS. 1 to 5, the reflector 15 is made of a conductive metal and has a white coating on the surface, and is attached along the lower surface of the instrument body 13; The base plate portion 26 has a reflective surface portion 27 that is curved and protrudes obliquely downward from both sides in the short direction, and is formed in a reflective shade shape with the lower surface side opposite to the instrument body 13 as the reflective surface 28. Between the both sides of the substrate part 26 and the reflecting surface parts 27 on both sides, a step part 29 is formed that engages and positions the both side parts of the instrument body 13.

  Socket insertion grooves 30 through which the sockets 14 are inserted are formed at both ends of the substrate portion 26 of the reflector 15, and screws 16 are provided at positions near both ends of the substrate portion 26 and corresponding to the screw mounting holes 23 of the instrument body 13. Screw insertion holes 31 through which are inserted are respectively formed.

  The screw insertion hole 31 is formed in an elongated hole shape along the longitudinal direction of the instrument body 13 and the reflector 15. A reflection surface opposite to the instrument body 13 is located around the screw insertion hole 31 at the center of both sides in the short direction of the screw insertion hole 31, that is, at the center of the long side on both sides of the screw insertion hole 31. A protrusion 32 protruding to the 28 side is formed. These protrusions 32 are formed so that the shape viewed from the inside of the screw insertion hole 31 has a substantially triangular cross section and continuously protrudes from the inner edge of the screw insertion hole 31.

  Further, as shown in FIG. 1, the screw 16 is made of a conductive metal and forms a helical thread that is screwed into the screw mounting hole 23 of the instrument body 13 through the screw insertion hole 31 of the reflector 15. And a screw 36 with a flange having a head 36 engaged with a peripheral position of the screw insertion hole 31 of the reflector 15 and a flange 37 integrally formed on the screw 36 side of the head 36. It is. A tool engaging portion with which a screw tightening tool is engaged is formed on the head portion 36.

  The diameter of the flange 37 of the screw 16 is larger than that of the head 36 and is formed to have a size capable of contacting each protrusion 32 of the screw insertion hole 31 of the reflector 15.

  Next, the operation of the present embodiment will be described.

  To install the luminaire 11, draw the power line or ground wire led to the installation location of the luminaire 11 into the fixture body 13, install the fixture body 13 at the installation location, and connect the power line or ground wire. Connect to the terminal block. The ground wire is electrically connected to the instrument body 13 via the terminal block, and the instrument body 13 is grounded.

  The reflector 15 is disposed on the lower surface of the instrument body 13, and the screw portion 35 of each screw 16 is screwed into each screw mounting hole 23 of the instrument body 13 through each screw insertion hole 31 of the reflector 15, and the head of each screw 16 is secured. The reflector 15 is fastened and attached between the portion 36 and the instrument body 13.

  At this time, by screwing the screw portion 35 of the screw 16 into the screw mounting hole 23, a thread is cut in the screw mounting hole 23, and even if the screw mounting hole 23 is painted, the coating is peeled off. Conductive with the instrument body 13.

  Further, in the middle of screwing the screw portion 35 of the screw 16 into the screw mounting hole 23, the head portion 36 of the screw 16, that is, the flange 37, contacts the protruding portion 32 and slides while contacting. Since the tip of the protrusion 32 is difficult to paint and the tip of the protrusion 32 is easily formed as a conducting part, the flange 37 of the screw 16 contacts the tip of the protrusion 32, so that the screw 16 and the reflector 15 Can be conducted. Even if the tip of the projection 32 is painted, stress or friction force concentrates on the tip of the projection 32, so that the coating can be easily peeled off and the screw 16 and the reflector 15 are electrically connected. Can be made. Therefore, the screw 16 is conducted to both the instrument body 13 and the reflector 15, and the instrument body 13 and the reflector 15 are conducted through the screw 16 to be grounded.

  Therefore, without using a special screw, a general-purpose screw 16 can be used to connect the reflector 15 to the instrument body 13 and simultaneously connect the reflector 15 to the instrument body 13 to be grounded.

  Further, in order to cope with variations in the positional relationship between the screw insertion hole 31 of the reflector 15 and the screw mounting hole 23 of the instrument body 13 in the longitudinal direction, the screw insertion hole 31 of the reflector 15 is provided in a long hole shape. Even if it is, since the protrusion 32 is provided in the central portion of the long side of the screw insertion hole 31, the screw 16 can be connected regardless of the positional relationship between the screw insertion hole 31 and the screw 16 screwed into the screw mounting hole 23. The head 36 can be reliably brought into contact with the protrusion 32.

  In addition, since the protrusion 32 of the reflector 15 is continuous from the inner edge of the screw insertion hole 31, the protrusion 32 can be processed simultaneously when forming the screw insertion hole 31 of the reflector 15, thereby improving productivity. It can be improved. For example, when the screw insertion hole 31 is formed by press punching, the protrusion 32 is processed by slightly changing the press die so as to provide a region that is not completely punched outside the inner edge of the screw insertion hole 31. it can.

  Note that the protruding shape of the protrusion 32 of the reflector 15 is not limited to a substantially triangular cross section, and may be a curved surface.

  Further, the type of the luminaire 11 is not limited to a ceiling-mounted luminaire, but can also be applied to a suspended luminaire, an embedded luminaire, and the like.

  Further, the shape of the reflector 15 is not limited to the shape of the reflective shade, and can be applied to various shapes used according to the type of lighting fixture such as a substantially V-shaped cross section.

  In addition, the screw 16 is not limited to a flanged screw, and when the protrusion 32 of the reflector 15 is continued from the inner edge of the screw insertion hole 31, a screw whose head 36 does not include the flange 37 is used. Also good.

It is sectional drawing of the decomposition | disassembly state of the lighting fixture which shows one embodiment of this invention. It is an expanded sectional view of the screw penetration hole part of the reflector of a lighting fixture same as the above. It is an enlarged bottom view of the screw insertion hole part of a reflector same as the above. It is a bottom view of a reflector same as the above. It is a perspective view of a lighting fixture same as the above.

Explanation of symbols

11 Lighting equipment
13 Instrument body
15 Reflector
16 screw
31 Screw insertion hole
32 Protrusion
35 Screw part
36 head

Claims (3)

An instrument body having a screw mounting hole;
A reflector having a screw insertion hole provided corresponding to the position of the screw mounting hole of the instrument body, and a protrusion protruding to the opposite side of the instrument body at a peripheral position of the screw insertion hole;
A screw portion that is screwed into the screw mounting hole of the instrument body through the screw insertion hole of the reflector, and a head that engages with a peripheral position of the screw insertion hole of the reflector, and the head contacts the protrusion. A screw in conduction with the reflector;
The lighting fixture characterized by comprising. The lighting apparatus according to claim 1, wherein the screw insertion hole of the reflector is provided in a long hole shape, and the protrusion is provided in a central region of the long side of the insertion hole. The lighting device according to claim 1, wherein the protrusion of the reflector is provided continuously from the inner edge of the screw insertion hole.

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