JP2013062219A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture which has an excellent appearance and in which installation workability can be improved and moreover safety can be secured.SOLUTION: The lighting fixture is provided with a fixture body 1 which has fixing parts 13 on both end parts and is fixed to an installation part C through the fixing part 13, end part covers 5 which cover the fixing parts 13 of the fixture body 1 and moreover can operate and expose the fixing parts 13, and a regulating means S3 for locking and holding the end part covers 5 toward the fixture body 1 side while the fixing parts 13 are exposed.

Description

  Embodiments described herein relate generally to a lighting fixture having attachment portions at both ends of a lighting fixture main body.

  2. Description of the Related Art Conventionally, for example, lighting fixtures used for interior lights in vehicles such as buses and railway vehicles have been provided with a fixture main body installed on the ceiling surface (installed portion) of the vehicle, and a straight pipe is provided on the front side of the fixture main body. A light source unit such as a fluorescent lamp is disposed.

  In such a vehicular lighting fixture, there are cases where mounting portions are provided at both ends of the lighting fixture main body, and the fixture main body is attached to the ceiling surface of the vehicle by screwing or the like via the mounting portion.

JP 2008-296774 A

  However, when mounting portions are provided at both ends of the instrument body as described above, the mounting portions appear on the appearance, and the appearance may be impaired. For this reason, it is conceivable to provide an end cover that covers the attachment portion and can be operated so that the attachment portion can be exposed.

  However, in this case, when the instrument body is installed on the installation part or removed from the installation part, the end cover may fall off the instrument body and fall. Therefore, the workability and safety of the lighting fixture are lowered, and the end cover as a part may be damaged.

  This invention is made | formed in view of the said subject, and it aims at providing the lighting fixture which can improve construction workability | operativity while being excellent in external appearance property, and can ensure safety | security.

The lighting fixture according to the embodiment of the present invention has mounting portions at both ends, and covers the mounting body of the mounting body and the mounting portion of the mounting body, and the mounting portion can be exposed. And an end cover that can be operated.
In addition, there are provided restricting means for engaging and holding the end cover on the instrument main body side in a state where the attachment portion is exposed.

  According to the embodiment of the present invention, it is possible to provide a lighting apparatus that has good appearance, can improve workability, and can ensure safety.

It is a perspective view which shows the state by which the lighting fixture which concerns on embodiment of this invention was attached to the to-be-installed part. It is a top view which shows the same lighting fixture seeing from the front side. It is a top view which shows the same lighting fixture seeing from the back side. FIG. 4 is a cross-sectional view taken along line YY in FIG. It is a disassembled perspective view which shows the same lighting fixture seeing from the front side. It is a disassembled perspective view which shows the same lighting fixture seeing from the back side. It is a partial top view of the back side which shows the attachment procedure regarding the attachment member in the lighting fixture. Similarly, it is a partial plan view on the back side showing a mounting procedure related to the mounting member. Similarly, it is a partial plan view on the back side showing a mounting procedure related to the mounting member. It is a partial perspective view of the back side which shows the attachment process of the edge part cover in the same lighting fixture. Similarly, it is a partial perspective view of the back side showing the attachment process of the end cover. Similarly, it is a partial perspective view of the back side showing the attachment process of the end cover. It is a partial perspective view which expands and shows the globe in the lighting fixture. It is a partial perspective view which expands and shows the light source part (globe holding metal fitting) in the lighting fixture. It is sectional drawing which shows the holding | maintenance state of the globe in the lighting fixture. In the same lighting fixture, it is a partial top view which shows the state which slidably moved the edge part cover and exposed the attachment part from the front side. Similarly, it is a partial top view seen from the back side in the state where the end cover was slid and the mounting portion was exposed. Similarly, it is a partial perspective view seen from the back side in a state where the end cover is slid and the attachment portion is exposed. (A) And (b) has shown the state by which an edge part cover is hold | maintained at the instrument main body side, and is sectional drawing shown along XX in FIG. FIG. 20 is a cross-sectional view corresponding to FIG. 19 showing an embodiment (Example 1) for preventing the lighting fixture from dropping in a state where the lighting fixture is attached to the installation portion. Similarly, it is a side view showing an embodiment (Example 2) for preventing a fall. It is an enlarged view of the principal part which shows embodiment (Example 2) which prevents a fall similarly. FIG. 8 is an explanatory view showing an embodiment (Example 2) for preventing a fall and showing an operation for temporarily fixing a lighting fixture to an installation portion.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the present embodiment, a lighting fixture used as an interior lamp in a vehicle such as a bus or a train is shown. In addition, the same code | symbol is attached | subjected to the same part in each figure, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 1 to 6, the luminaire includes a long instrument body 1 attached to an installation part C such as a ceiling surface of a vehicle, a light source unit 2 disposed in the instrument body 1, and A globe 3 that covers the light source unit 2 and a lighting device 4 that controls the lighting of the light source unit 2 are provided. Moreover, the end cover 5 provided in the both ends of the instrument main body 1, the attachment metal fitting 6 as an end cover attachment member, and the installation metal fitting 7 as a member which attaches the instrument main body 1 to the to-be-installed part C are provided. . Such a lighting fixture has a front side as a light irradiation surface and a back side as a mounting surface to the installation part C.

  The instrument body 1 is formed in a long shape and includes a base plate 11 and a side frame 12. The base plate 11 is formed, for example, by bending from a metal material having good thermal conductivity such as aluminum, and is formed in a substantially bowl shape having mounting pieces 11a along the longitudinal direction on both sides in the width direction. ing. Moreover, the both ends of a longitudinal direction are comprised as an attaching part. In the present embodiment, specifically, the attachment portion is, for example, a circular screw insertion hole 13 through which an attachment screw is inserted as a fixing means used for attaching the instrument body 1 to the installation portion C.

  Note that the attachment portion can be configured by an insertion hole, a screw hole, a notch portion, or the like through which a fixing means such as a screw is inserted or attached, and is not particularly limited. It means a part or member that is interposed or provided to attach the instrument body 1 to the installation part C.

  The side frame 12 is formed in a long shape by a metal plate such as a hot dip galvanized steel plate, and is mainly formed in a substantially U-shaped cross section with inner surfaces facing each other open as shown in FIG. A step portion 12b that restricts sliding movement of the end cover 5 described later is formed on the upper end edge 12a that rises to the back side of the inner wall (see FIG. 10).

  Such a side frame 12 is attached to both sides along the longitudinal direction of the base plate 11 via attachment brackets 12c having a substantially L-shaped cross section. Specifically, a mounting bracket 12c having a substantially L-shaped cross section is fixed to the side frame 12, and a mounting piece 11a of the base plate 11 is placed on the mounting bracket 12c, and is screwed and integrated. ing.

  As representatively shown in FIGS. 4 and 5, the light source unit 2 includes a substrate 21, a plurality of light emitting elements 22 mounted on the substrate 21, and a phosphor layer 23 covering each light emitting element 22. Yes.

  The board | substrate 21 is formed in the elongate rectangular shape with materials, such as glass epoxy resin (FR-4) which is an insulating material. On the surface side, a wiring pattern made of copper foil is applied. Further, a resist layer is appropriately applied. A plurality of substrates 21, specifically, four substrates 21 are arranged in a straight line in the longitudinal direction on the front side of the instrument body 1. Therefore, the back surface side of the substrate 21 is in thermal contact with the front surface side of the instrument body 1 in thermal contact.

  The material of the substrate 21 is a ceramic material, a synthetic resin material, or an insulating layer on one surface of a base plate that has good thermal conductivity such as aluminum and has excellent heat dissipation in order to enhance the heat dissipation of each light emitting element 22. Can be applied, and the material is not particularly limited.

  The plurality of light emitting elements 22 are LED bare chips. For example, an LED bare chip that emits blue light in order to cause white light to be emitted from the light emitting unit is used. The LED bare chip is bonded onto the substrate 21 using a silicone resin-based insulating adhesive, and is electrically connected to the wiring pattern by bonding wires.

  The phosphor layer 23 is made of a translucent synthetic resin, for example, a transparent silicone resin, and contains an appropriate amount of a phosphor such as YAG: Ce. The phosphor layer 23 has a mountain shape that covers each light emitting element 22 for each light emitting element 22. The phosphor is excited by light emitted from the light emitting element 22 and emits light having a color different from the color of light emitted from the light emitting element 22. In the present embodiment in which the light emitting element 22 emits blue light, a yellow phosphor that emits yellow light having a complementary color relationship with blue light is used for the phosphor so that white light can be emitted. Has been.

  Note that a surface-mount LED package may be used as the light-emitting element. Further, a bullet-type LED may be mounted, and the mounting method and format are not particularly limited.

  As shown in FIGS. 1, 2, 4, and 5, the globe 3 has translucency, a side cross-section is formed in an elongated shape, and covers the light source unit 2. It has become. The globe 3 is formed of a transparent polycarbonate resin, an acrylic resin, or the like, and its surface side is covered with a glass cloth 31 that is a nonflammable material.

  As shown with reference to FIG. 13, both end portions along the longitudinal direction of the glass cloth 31 are substantially the entire length in the longitudinal direction of the globe 3 so as to be wound inside the semicircular open end from the surface side of the globe 3. It is attached by the elongate fastener 32 extending over. The fastener 32 is formed in a substantially Ω-shaped cross section and has a spring property, and is attached so as to sandwich the end portion of the glass cloth 31 from the outside. Accordingly, the concave strip portion 32 a is formed on both sides of the fastener 32.

  Further, both end portions of the globe 3 in the longitudinal direction are held by the globe end plate 33 and attached to the instrument body 1. As shown in FIG. 16 with reference to FIG. 16, the globe end plate 33 has a flange portion 33 a so as to cover the semicircular openings at both ends of the globe 3, and is formed in a substantially semicircular shape. The fixing piece 33b for attaching to the instrument body 1 is provided. A pair of screw through holes are formed in the fixed piece 33b. Accordingly, the globe 3 is attached from the front side by a mounting screw S1 that passes through the screw through hole of the fixing piece 33b and the pair of screw through holes formed in the instrument body 1 and is screwed into the screw hole 61b of the mounting bracket 6 to be described later. It is done.

  Here, as shown in FIGS. 5, 14, and 15, globe holding metal fittings 34 are provided at a plurality of appropriate locations on both sides in the longitudinal direction of the light source unit 2. The globe holding bracket 34 is formed by bending a plate-like material into a substantially U shape, and both ends thereof are arranged to extend from the back side to the front side of the instrument body 1. A plurality of convex portions 34a extending outward are formed at both extended end portions.

  Therefore, when attaching the globe 3, first, the concave strip portion 32 a on the outside of the fastener 32 is elastically engaged with the convex portion 34 a of the globe holding fixture 34 to hold the globe 3 on the instrument body 1 side. Then, it attaches by fixing the glove end plate 33 to the instrument main body 1 side.

  As described above, the globe 3 is held by the globe holding bracket 34 using the fastener 32 that sandwiches the glass cloth 31. Therefore, the central portion of the elongated globe 3 over time due to vibration or the like can be obtained with a simple configuration. It is possible to avoid such a problem that droops downward due to its own weight.

  In this case, since the fasteners 32 are formed in a long shape over substantially the entire length in the longitudinal direction of the globe 3, there are few restrictions on the positions when providing the globe holding fittings 34 at a plurality of locations in the longitudinal direction. The degree of freedom of arrangement can be ensured, and the holding of the globe 3 to the instrument body 1 is ensured by the fasteners 32 and the globe holding fittings 34.

  Further, a packing 35 is interposed between the end portion along the longitudinal direction of the globe 3 and the front side of the instrument body 1. Therefore, the vibration of the globe 3 is mitigated by the packing 35, and the gap between the end portion along the longitudinal direction of the globe 3 and the front side of the instrument body 1 is coupled with the holding action of the globe holding bracket 34. The generation of dust and insects into the globe 3 can be prevented.

  The lighting device 4 is attached to the back side of the instrument body 1. The lighting device 4 is configured by housing circuit components in a box-shaped case, and is connected to a commercial AC power supply AC and receives the AC power supply AC to generate a DC output. The lighting device 4 is configured, for example, by connecting a smoothing capacitor between output terminals of a full-wave rectifier circuit, and connecting a DC voltage conversion circuit and current detection means to the smoothing capacitor. Therefore, the lighting device 4 is connected to the light source unit 2, supplies the direct current output to the light emitting element 22, and controls the lighting of the light emitting element 22. The lighting device 4 may be connected to an external DC power supply DC, receive the DC power supply DC, and supply a DC output to the LED.

  Next, the attachment member relationship for installing the instrument main body 1 to the installation part C, that is, the end cover 5, the attachment bracket 6, and the installation bracket 7 will be described. These members are formed from a metal plate and are provided at both ends of the instrument body 1. These members are common to both end portions (left and right in the drawing).

  Mainly referring to FIG. 5 (illustration of the mounting screws is omitted) and FIG. 6, and as shown with reference to other drawings as required, the end cover 5 is a flat shape having a substantially rectangular shape. Cover wall 51, side wall 52 and front wall 53 formed so as to stand up from both sides of cover wall 51.

A screw through hole 51 a is formed near the front wall 53 of the cover wall 51. A pair of slide pieces 54 that extend in a substantially L shape outward in the width direction is formed at the edge of the side wall 52. The slide piece 54 is formed with a stopper portion 54a that extends to the outside larger than other portions.
In addition, a pair of guide pieces 53 a that extend inward and have some elasticity in the width direction are provided at both ends of the front wall 53.

  The mounting bracket 6 has a base wall 61 formed in a substantially rectangular shape, a mounting wall 62 extending obliquely forward from the base wall 61, and side walls 63 formed so as to stand up from both sides of the base wall 61. ing. The base wall 61 is formed with a screw insertion hole 61a facing the screw insertion hole 13 of the instrument body 1 and a pair of screw holes 61b closer to the end. A screw hole 62 a is formed in the mounting wall 62 so as to face the screw through hole 51 a of the end cover 5. Further, a pair of attachment pieces 63a are formed on the edge of the side wall 63 toward the outside in the width direction, and screw holes 63b into which screws as regulating means described later are screwed into the attachment pieces 63a. Is formed.

  The mounting bracket 7 includes a base wall 71 formed in a substantially rectangular shape having a long side in the width direction, a pair of mounting pieces 72 bent from the base wall 71 and extended outward in the width direction, and the base wall 71. The front wall 73 is bent in the vertical direction. The base wall 71 is formed with a screw through hole 71a facing the screw insertion hole 13 of the instrument body 1, and each attachment piece 72 is formed with a screw through hole 72a.

Next, an attachment procedure related to the attachment member will be described with reference to FIGS. Schematically, as shown in FIGS. 5 and 6, first, the mounting bracket 6 is attached from the back side of the instrument body 1. Next, similarly, the installation bracket 7 is attached from the back side of the instrument body 1. Subsequently, the end cover 5 is disposed and attached so as to slide from the end side in the longitudinal direction of the instrument body 1. Note that the order of the attachment procedure is not particularly limited. The order may be changed and installed.
More details will be described below mainly with reference to FIGS.
[Mounting of mounting bracket 6]

  As shown in FIGS. 6 and 7, the mounting bracket 6 is disposed on the back side of the instrument body 1. In this case, the pair of screw holes 61b formed in the base wall 61 are arranged in alignment with the screw through holes on the instrument body 1 side. Thereby, the screw insertion hole 61a comes to align with the screw insertion hole 13 on the instrument body 1 side.

In this state, the globe 3 disposed on the front side of the instrument body 1 is attached to the instrument body 1 by the globe end plate 33. Specifically, as shown in addition with reference to FIG. 16, the screw through hole of the fixing piece 33 b in the glove end plate 33 and the screw through hole formed in the instrument body 1 are penetrated from the front side, The mounting screw S1 is screwed into the pair of screw holes 61b.
As a result, the globe 3 is attached to the instrument body 1, and the mounting bracket 6 is attached to the instrument body 1.
[Attaching the mounting bracket 7]

  As shown in FIGS. 6 to 8, the installation fitting 7 is arranged on the back side of the instrument body 1. In this case, the screw through hole 72a formed in each attachment piece 72 is aligned with the screw through hole on the instrument body 1 side. As a result, the screw through hole 71 a comes to be aligned with the screw insertion hole 61 a of the mounting bracket 6.

And it attaches from the back side to the screw hole formed in the mounting bracket 12b having a substantially L-shaped cross section fixed to the side frame 12 through the screw through hole 72a of the mounting piece 72 and the screw through hole on the side of the instrument body 1. Screw in the screw S2. Thereby, the installation fitting 7 is attached to the instrument body 1.
[Attaching the end cover 5]

  As shown in FIGS. 5, 6, 8 to 12, the end cover 5 is attached so as to slide from the end side in the longitudinal direction of the instrument body 1. Specifically, as representatively shown in FIGS. 10 to 12, the slide piece 54 is slid inward in the longitudinal direction using the upper edge 12 a of the inner wall of the side frame 12 as a guide.

  FIG. 10 shows the end side of the instrument main body 1 and the end cover 5, and shows a state before the end cover 5 is attached. From this state, as shown in FIG. 11, the pair of slide pieces 54 in the end cover 5 are placed on the upper end edge 12 a of the side frame 12, and the cover wall 51 is placed on the front side of the base plate 11 in the instrument body 1 ( The end cover 5 is slid to the instrument body 1 side so as to be disposed on the lower side in the drawing.

  At the end stage of the sliding movement of the end cover 5, the guide piece 53a provided on the front wall 53 of the end cover 5 is guided to the inner wall surface of the side frame 12, and the end cover 5 is disposed at a predetermined position. (See FIGS. 9 and 12).

  In this state, as shown in FIGS. 9 and 12, a screw S3 as a restricting means is screwed into the screw hole 63b of each mounting piece 63a of the mounting bracket 6. As a result, the screw S3 is positioned so as to advance from the opening in the side frame 12 having a substantially U-shaped cross section to the front side. At the same time, the mounting screw S4 is passed through the screw through hole 51a of the end cover 5 from the front side and screwed into the screw hole 62a of the mounting wall 62 of the mounting bracket 6. Thus, the end cover 5 is attached to the instrument body 1.

  In this state where the end cover 5 is attached, the screw insertion hole 13 as the attachment portion of the instrument body 1 is covered with the end cover 5 on the front side and cannot be visually recognized. In addition, the mounting screw S1 on the globe end plate 33 is also covered with the end cover 5 (see FIGS. 1, 2 and 16).

  As a mounting procedure, first, the mounting bracket 6 is arranged on the back side of the instrument body 1, and the installation bracket 7 is mounted from the back side of the instrument body 1 so that the mounting bracket 6 is temporarily fixed. The globe 3 may be attached to the instrument body 1 with the attachment screw S1 by the globe end plate 33 on the front side of the body 1 and at the same time the attachment bracket 6 may be fixedly attached to the instrument body 1.

  Next, an outline of the case where the lighting fixture configured as described above is attached to the installation part C will be described with reference mainly to FIGS. 16 to 19. The luminaire is shipped with the end cover 5, the mounting bracket 6 and the installation bracket 7 attached as described above, and construction work is performed at the installation site.

  When attaching the luminaire to the installation part C, the attachment screw S4 is removed, and the end cover 5 is slid and pulled outward as shown in FIGS. Therefore, as shown in FIG. 16, the screw insertion hole 13 that is an attachment portion of the instrument body 1 is exposed.

  In this state, the instrument main body 1 is supported by hand and pushed upward to be placed at a predetermined position of the installation part C. As shown in FIG. 4, the mounting screw S5 is inserted from the front side including the head. The mounting screw S5 is inserted through the screw insertion hole 13 of the fixture body 1 and the screw insertion hole 61a of the mounting bracket 6, and then the mounting screw S5 is threaded through the screw through hole 71a of the mounting bracket 7 and screwed into the installation portion C side.

  Thereby, the instrument main body 1 is attached to the installation part C. Subsequently, as shown in FIGS. 9 and 12, the end cover 5 is slid and returned to the original position, and fixed to the instrument body 1 side by the mounting screw S4. Therefore, as described above, the screw insertion hole 13 as the attachment portion of the instrument body 1 is naturally covered with the end cover 5 and cannot be visually recognized, and the attachment screw S1 on the glove end plate 33 is also end-mounted. It is covered with the part cover 5.

  In the process of attaching the luminaire to the installation part C, the apparatus body 1 is pushed upward and placed in the installation part C in a state where the end cover 5 is pulled out. In this case, the end cover 5 may fall off the instrument body 1 and fall, but in this embodiment, the end cover 5 is prevented from falling off, and the restricting means is locked and held on the instrument body 1 side. Is provided.

  Specifically, as shown in FIGS. 18 and 19A, the slide piece 54 of the end cover 5 is locked to the step portion 12 b of the upper end edge 12 a of the side frame 12. Therefore, the slide movement to the outside of the end cover 5 is primarily restricted.

  However, for example, when the end cover 5 is inclined obliquely during the construction work, the locking of the slide piece 54 of the end cover 5 is released from the stepped portion 12b, and the end cover 5 falls off and falls. A possibility arises.

  In the present embodiment, screws S3 are screwed into the mounting pieces 63a of the mounting bracket 6 as regulating means for locking and holding the end cover 5 on the instrument body 1 side. Accordingly, as shown in FIG. 19B, even when the end cover 5 is inclined, the stopper portion 54a of the slide piece 54 collides with the shaft portion of the screw S3 and is locked. . For this reason, the end cover 5 is securely held on the instrument body 1 side without falling off from the instrument body 1 side.

When power is supplied to the lighting device 4 in the installation state of the lighting fixture, the light emitting element 22 in the light source unit 2 is energized and the light emitting element 22 emits light. The light emitted from the light emitting element 22 is diffused through the globe 3 and irradiated to a predetermined light distribution range.
Further, heat is generated as the light emitting element 22 emits light. This heat is mainly conducted from the back side of the substrate 21 to the instrument body 1 and radiated.

  Thus, when the light source part 2 which uses the light emitting element 22 as a light source is arrange | positioned in the instrument main body 1, the thermal radiation of the light source part 2 is required. For this reason, the attachment part comes to be provided in the both ends of the instrument main body 1 from the restrictions on a structure. Therefore, the configuration of the present embodiment is suitable when applied to a lighting fixture that uses the light emitting element 22 as a light source.

  As described above, according to the present embodiment, the attachment portions (screw insertion holes 13) at both ends of the instrument body 1 can be covered with the end cover 5, so that the appearance is good. Moreover, when installing the instrument main body 1 in the installation part C or removing it from the installation part C, the end cover 5 can be operated so that the attachment part can be exposed without being removed from the instrument main body 1, and Since it is locked and held by the instrument main body 1, construction workability can be improved, and further safety can be ensured.

  Next, in the state where the lighting fixture is attached to the installation part C, the attachment screw S5 is screwed into the installation part C and the attachment state is maintained, but the attachment screw S5 is affected by the influence of vibration over time or the like. May come loose. In this case, there is a risk that the luminaire is detached from the installation part C and falls.

With reference to FIG. 20 thru | or FIG. 23, embodiment which prevents the fall in the state with which the lighting fixture was attached to the to-be-installed part C is described. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the said embodiment, and the overlapping description is abbreviate | omitted. 20A and 20B show the first embodiment, and FIGS. 21 to 23 show the second embodiment.
Example 1

  FIG. 20 shows a cross section corresponding to FIG. 19, FIG. 20 (a) shows a state in which the end cover 5 is slid and pulled out, and FIG. 20 (b) shows the end cover 5 as the original. The state (usage state) which returned to the state and was fixed to the instrument main body side with the attachment screw S4 is shown.

  The end cover 5 of the present embodiment is provided with a fall prevention piece 55 that extends inside the end cover 5. The fall prevention piece 55 is a metal plate having a predetermined width dimension, and extends in the longitudinal direction.

  When the end cover 5 is slid from the state of FIG. 20A to the state of FIG. 20B, the fall prevention piece 55 is positioned below the mounting screw S5. Therefore, even if the mounting screw S5 is loosened due to the influence of vibration or the like, the head of the mounting screw S5 abuts against the fall prevention piece 55, and the mounting screw S5 is prevented from being detached from the installation portion C and falling off. can do.

It should be noted that the portion of the fall prevention piece 55 where the head of the mounting screw S5 abuts is caused by the vibration of the vehicle after the head of the mounting screw S5 abuts, and the fall prevention piece 55 and the mounting screw S5. In order to prevent the generation of abnormal noise due to contact with the head, it is preferable to attach a cushioning material such as tape or packing.
As described above, according to the present embodiment, it is possible to reliably prevent the lighting apparatus from falling and improve safety.
(Example 2)

  In this embodiment, a function for preventing a fall is added to a temporary fixing mechanism for facilitating the mounting of the lighting fixture to the installation portion C, and the locking screw 8 and the lighting fixture main body 1 side are provided. The formed locking hole 9 is provided.

  As shown in FIG. 21, a pair of locking screws 8 are screwed into the installation portion C with a predetermined interval. On the other hand, a pair of locking holes 9 are formed on the luminaire main body 1 side so as to face the locking screws 8. When the locking hole 9 is locked to the locking screw 8, when the lighting fixture is attached to the installation portion C, the lighting fixture is temporarily fixed to the installation portion C, and when the lighting fixture is installed, the lighting fixture is dropped. Will be prevented.

  Specifically, as shown in FIG. 22, the locking screw 8 is a stepped screw, is cylindrical, and has three steps with different outer diameters, that is, a first step 81. The second step portion 82 and the third step portion 83 are provided, and a shaft portion 84 formed with a male screw is provided on the distal end side.

  The first step portion 81 is formed so that its outer diameter dimension increases in order from the third step portion 83, the outer diameter size of the first step portion 81 is d 1, and the second step portion 82 When the outer diameter is d2 and the outer diameter of the third step portion 83 is d3, the dimensional relationship is d1 <d2 <d3.

  Moreover, the latching hole 9 is formed in the plate-shaped mounting bracket 15 provided in the back side of the lighting fixture. The locking hole 9 has a shape such that large and small circular holes having different diameters are connected by a straight hole, and is formed in a generally gourd shape. The circular hole having a large diameter functions as the insertion portion 91, and the circular hole having a small diameter functions as the locking portion 92. Further, the linear hole functions as the slide portion 93.

  Further, the locking hole 9 has a relationship with the dimension of the locking screw 8 when the width dimension of the slide part 93 is D1, the inner diameter dimension of the locking part 92 is D2, and the inner diameter dimension of the insertion part 91 is D3. The width dimension D1 of the slide portion 93 is slightly larger than the outer diameter dimension d1 of the first step portion 81 and smaller than the outer diameter d2 of the second step portion 82, and has a dimensional relationship of d1 <D1 <d2. .

Further, the inner diameter dimension D2 of the locking portion 92 is slightly larger than the outer diameter d2 of the second step portion 82 and smaller than the outer diameter d3 of the third step portion 83, so that the dimensional relationship is d2 <D2 <d3. The inner diameter D3 of the insertion portion 91 is slightly larger than the outer diameter d3 of the third step portion 83, and has a dimensional relationship of D3> d3.
With respect to the dimensional relationship between the locking screw 8 and the locking hole 9, a temporary fixing state before the lighting fixture is installed and fixed to the installation part C will be described with reference to FIG.

  First, as shown in FIG. 23 (a), the locking screw 8 is screwed into the installation portion C and attached, and the lighting fixture is supported by the hand so that the locking hole 9 is aligned with the locking screw 8 and pushed upward. Specifically, the insertion portion 91 is inserted through the locking screw 8, and the rear side of the luminaire is disposed so as to contact the installation portion C as shown in FIG.

  Next, the lighting fixture is slid leftward in the figure from the state shown in FIG. In this case, the slide portion 93 of the locking hole 9 is slid and guided by the outer diameter of the first step portion 81 of the locking screw 8. At the end point of the slide movement, the locking portion 92 of the locking hole 9 is positioned corresponding to the locking screw 8 as shown in FIG.

  Here, when the support of the lighting fixture is released, the inner diameter D2 of the locking portion 92 is larger than the outer diameter d2 of the second step portion 82 of the locking screw 8, as shown in FIG. Since the luminaire is formed smaller than the outer diameter d3 of the step portion 83, the locking portion 92 is hooked and supported by the third step portion 83 due to the weight of the luminaire, and the luminaire is temporarily stopped. From this temporarily fixed state, the luminaire can be securely installed and fixed to the installation portion C by the mounting screw S5.

  Although the temporary fixing mechanism is configured as described above, even if the mounting screw S5 is loosened and removed due to the influence of vibration or the like, the locking portion 92 is hooked on the third step portion 83 as in the temporary fixed state. It is supported in the past and can prevent the lighting apparatus from falling. Further, since the width dimension D1 of the slide portion 93 is formed smaller than the outer diameter d2 of the second step portion 82, the lateral direction of the lighting fixture can be obtained even when a lateral force acts on the lighting fixture due to vibration or the like. Movement in the direction (slide movement) is prevented, and the support of the locking portion 92 is not released from the third step portion 83.

  As described above, according to the present embodiment, when the lighting fixture is attached to the installation part C, the lighting fixture can be temporarily fixed, and the lighting fixture can be reliably prevented from falling to increase safety. it can.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary of invention. Moreover, the said embodiment is shown as an example and is not intending limiting the range of invention. For example, in the above embodiment, the screw has been described as an example of the restricting means. However, the restricting means may be any member or part that can hold and hold the end cover on the instrument body side, and is a specially specified one. It is not limited to.

1 ... instrument body, 2 ... light source,
3 ... globe, 4 ... lighting device,
5 ... end cover, 6 ... mounting bracket,
7 ... Installation bracket, 11 ... Base plate,
12 ... side frame, 13 ... mounting part (screw insertion hole),
21 ... substrate, 22 ... light emitting element (LED),
S3 ... Restricting means (screw), C ... Installed part

Claims (1)

An instrument main body having attachment portions at both ends and being attached to the installation portion via the attachment portions;
An end cover that covers the attachment portion of the instrument body and that can be operated to expose the attachment portion;
A restricting means for engaging and holding the end cover on the instrument body side in a state where the mounting portion is exposed;
The lighting fixture characterized by comprising.

Images