JP2013179014A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a more elongated lighting fixture possessing sufficient mechanical strength.SOLUTION: A lighting fixture includes an elongated plate-like chassis installing an elongated substrate mounting light-emitting elements in a state connected in a longitudinal direction. On the center along the longitudinal direction of the chassis, a reinforcing member having a length of more than 1/2 of the total length of the chassis is fixed. The reinforcing member includes reinforcing ribs with edges along its longitudinal direction risen up in a direction away from the chassis.

Description

  Embodiments of the present invention relate to a luminaire having a relatively long chassis.

  In recent years, lighting fixtures using light-emitting diodes (LEDs) as light sources are becoming popular as lighting fixtures that have a long service life and low power consumption. As this type of lighting apparatus, a base light installed on a ceiling surface is known. In the base light, a plurality of LEDs are mounted side by side on an elongated board, and the boards are connected in the longitudinal direction and attached to the chassis.

  With the spread of this type of base light, development of a longer product in which more substrates are connected is desired, and development of a longer chassis is required.

JP 2011-258420 A

  However, if the baselight chassis is lengthened, the mechanical strength becomes insufficient and the possibility of bending and twisting increases.

  Therefore, it is desired to develop a longer lighting apparatus having sufficient mechanical strength.

  The lighting fixture according to the embodiment has an elongated plate-like chassis attached with an elongated substrate mounted with light emitting elements connected in the longitudinal direction. At the center along the longitudinal direction of the chassis, a reinforcing member having a length exceeding 1/2 of the entire length of the chassis is fixed. The reinforcing member has a reinforcing rib whose edge along the longitudinal direction is raised in a direction away from the chassis.

  According to the present invention, the development of a longer lighting device having sufficient mechanical strength can be expected.

FIG. 1 is an external perspective view of a base light as a reference example. FIG. 2 is a plan view of the base light of FIG. 1 viewed from the front side. FIG. 3 is an exploded perspective view of the base light of FIG. FIG. 4 is a cross-sectional view of the base light taken along the line YY of FIG. FIG. 5 is a partially enlarged cross-sectional view in which the portion A of FIG. FIG. 6 is a side view of the base light of FIG. 1 with one side plate and two lids removed from one end side. 7 is a plan view of one light source unit incorporated in the base light of FIG. 1 as viewed from the front side thereof, and a plan view showing a wiring pattern layer before providing a resist layer on the substrate of the light source unit. (B). FIG. 8 is an exploded perspective view showing a lid body and a side plate for closing one end of the cover member of the base light of FIG. 1. FIG. 9 is a perspective view showing a state in which the center cover of the relatively long base light according to the embodiment is separated. 10 is a partially enlarged perspective view showing a reinforcing member attached to the chassis of the base light of FIG.

  Before describing an embodiment of the present invention, a lighting apparatus as a reference example will be described with reference to FIGS. In the drawings, the same parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 shows an external perspective view of a base light 100 directly attached to a ceiling surface C as an example of a lighting fixture. The base light 100 is formed in an elongated flat and substantially rectangular shape. In the following description, the lower side in the drawing, that is, the light extraction side is referred to as the front side, and the upper side in the drawing, that is, the direction toward the ceiling surface C is referred to as the back side.

  As shown in FIG. 3, the base light 100 includes a chassis 1 that functions as an apparatus main body, a plurality of strip-like light source units 2 attached to the chassis 1, and a milky white and translucent covering the plurality of light source units 2. A long and thin tube-shaped cover member 3, a lighting device 4 that controls lighting of the light source unit 2, a center cover 5 having a substantially V-shaped cross section attached to the center of the chassis 1, two side plates 6, It has. Such a base light 100 has a front side as a light irradiation surface and a back side as a mounting surface to the ceiling surface C.

  As shown in FIGS. 3 and 4, the chassis 1 has an elongated, substantially rectangular plate-like structure, and is formed by processing a metal plate having thermal conductivity such as a hot-dip galvanized steel plate. The chassis 1 has a function of attaching a plurality of constituent members of the base light 100 and a function of a heat radiating member for releasing heat generated in the light source unit 2.

  The chassis 1 has a flat top plate surface 11 at the center, and has two long and narrow arrangement portions 12 and 12 for contacting the back surfaces of the plurality of light source units 2 at both end edges along the longitudinal direction. . Each arrangement portion 12 is integrally formed by expanding a part of the chassis 1 toward the front surface side, and has an elongated flat surface that contacts and thermally couples the back surface of the light source portion 2. The arrangement part 12 has a length that exceeds the length in which the three light source parts 2 are connected.

  In other words, the two arrangement portions 12 are provided over the entire length of the chassis 1, and also have a function as reinforcing ribs that increase the mechanical strength along the longitudinal direction of the chassis 1.

  Further, attachment holes 11 a are formed in the vicinity of both longitudinal ends of the top plate surface 11 of the chassis 1. A pair of mounting bolts (not shown) provided in the ceiling structure body are penetrated from the back side into the mounting holes 11a and fastened with nuts (not shown) arranged on the front side of the chassis 1 so that the chassis 1 is fixed to the ceiling surface C.

  As shown in FIGS. 2 to 4 and 7, the light source unit 2 includes an elongated rectangular belt-like substrate 21, a plurality of light emitting elements 22 mounted on the surface of the substrate 21, and a phosphor that covers each light emitting element 22. And a layer 23. In FIG. 2, the cover member 3 on one side (the upper side in the drawing) is shown transparent for easy understanding. FIG. 7B shows the wiring pattern layer 21a of the substrate 21 before the light emitting element 22 is mounted.

  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. A wiring pattern layer 21a made of copper foil is applied on the surface side (see FIG. 7b). A resist layer 21b (see FIG. 7a) is appropriately applied on the wiring pattern layer 21a. The substrate 21 is made of a ceramic material, a synthetic resin material, or an insulating layer on one surface of a base plate that has good heat conductivity such as aluminum to improve heat dissipation of each light emitting element 22 and excellent heat dissipation. A laminated metal base substrate can be used, and the material is not particularly limited.

  As shown in FIG. 7B, the wiring pattern layer 21 a is formed, for example, by arranging a plurality of substantially rectangular wiring pads in two rows so as to be adjacent to each other along the longitudinal direction of the substrate 21. Each wiring pad is provided corresponding to the light emitting element 22 on a one-to-one basis. The wiring pattern layer 21 a is a conductive layer that electrically connects each light emitting element 22, and also has a function as a heat dissipation layer that diffuses and dissipates heat generated from each light emitting element 22.

  On the surface layer of the substrate 21, a white resist layer 21b having a high reflectance is laminated on almost the entire surface except for the mounting area of the light emitting element 22 and the mounting part of the components. As a result, among the light emitted from the light emitting element 22, the light directed in the lateral direction is reflected by the surface of the white resist layer 21b having a high reflectance and is emitted to the front side.

  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 the light source unit 2 to emit white light is used. The bare chip of the LED is bonded onto the wiring pattern layer 21a using a silicone resin-based insulating adhesive, and is electrically connected to the wiring pattern layer 21a by a bonding wire.

  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 substantially cylindrical shape with a small height so as to cover 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 this reference example, since the light emitting element 22 emits blue light, yellow fluorescent light that emits yellow light that is complementary to the blue light is emitted to the phosphor so that the light source unit 2 can emit white light. The body is used.

  The shape of the phosphor layer 23 is not particularly limited as long as the individual light emitting elements 22 can be covered, and a mountain shape or a line shape continuously covering the plurality of light emitting elements 22 may be applied. it can. Further, as the light emitting element 22, a surface mount type LED package may be used, and the mounting method and form are not particularly limited.

  Furthermore, in this reference example, the wiring pattern layer 21a functions as a heat dissipation layer, but the wiring pattern layer 21a and the heat dissipation layer may be formed separately. In this case, the light-emitting element 22 is disposed on the heat-dissipating layer, but the heat-dissipating layer is not electrically connected, and serves mainly as a mounting pad for the light-emitting element 22 to promote the heat-dissipating action.

  The light source unit 2 having the above structure is connected to the cover member 3 in the longitudinal direction. In this reference, three light source parts 2 are connected and mounted in one cover member 3, and a total of six light source parts 2 are incorporated in the base light 100. In the case of configuring a longer base light, the number of light source units 2 connected in the longitudinal direction is increased.

  Adjacent ends of each light source unit 2 are connected via a wiring Z shown in FIG. Further, the wiring Z is also derived from at least one end of the light source units 2 at both ends of the connected light source units 2. Then, the wiring Z led out from this end is connected to the lighting device 4 attached to the chassis 1 so that power can be supplied to each light source unit 2.

  The cover member 3 includes a front surface portion 3 a that covers the front surface side of each light source portion 2, and a slit-shaped opening portion 31 that exposes the back surface of each light source portion 2. For this reason, by attaching the cover member 3 to the chassis 1, the back surface of the substrate 21 of each light source unit 2 comes into contact with the flat surface of the arrangement portion 12 in the chassis 1 through the open portion 31. It is thermally coupled to the chassis 1.

  The cover member 3 is formed of an insulating material having translucency such as an acrylic resin or a polycarbonate resin. In this reference example, the cover member 3 was formed by extrusion molding of polycarbonate. As shown in FIGS. 3 to 5, the cover member 3 is formed in a long tube shape, has a symmetrical cross-sectional shape, and is attached to the arrangement portions 12 formed on both sides of the chassis 1. The cover member 3 has substantially the same length as the arrangement portion 12. Note that openings 32 for inserting the light source unit 2 are provided at both ends in the longitudinal direction of the cover member 3.

  For example, as shown in FIG. 5, a pair of holding grooves 33 that are opened opposite to each other are formed on the edge along the longitudinal direction of the opening 31 over the entire length. The pair of holding grooves 33 are formed between the front side support part 33a and the back side support part 33b along the longitudinal direction. In addition, a pair of locking portions 34 that are substantially U-shaped in cross section and open to the inside are formed outside the holding groove 33 over the entire length in the longitudinal direction.

  Both ends of the plurality of light source units 2 along the longitudinal direction of the substrates 21 are inserted into the pair of holding grooves 33 facing each other in the cover member 3. Specifically, as shown in FIG. 3, three light source parts 2 are connected by wiring Z and inserted from one opening 32 of the cover member 3, and both ends of each light source part 2 along the longitudinal direction of the substrate 21. The edge is guided and held by the pair of holding grooves 33. As a result, the light source unit 2 is held by the cover member 3 and integrated with the cover member 3. FIG. 7A illustrates how the front-side support member 33a and the edge extending in the longitudinal direction of the substrate 21 overlap when the light source unit 2 and the cover member 3 are integrated.

  As shown in FIG. 8, lids 35 that close the openings 32 are attached to the openings 32 at both ends in the longitudinal direction of the cover member 3. That is, as described above, after the three light source portions 2 are mounted in the pair of holding grooves 33 of the cover member 3, the lid body 35 is attached so as to close both ends of the cover member 3. Thus, by attaching the lid body 35 to the openings 32 at both ends of the cover member 3, it is possible to prevent the light source unit 2 from falling out of the cover member 3.

  The lid 35 has an insulating property, is formed of a light-transmitting material having light diffusibility from the surface to the inside of the material, and is milky white like the cover member 3. For this reason, the light emitted from the light source unit 2 can be irradiated to the outside through the lid 35.

  The position of the lid 35 is regulated by being combined with a side plate 6 described later. Furthermore, a wiring Z that connects the end of the substrate 21 and the lighting circuit 4 exists between the back side of the lid 35 and the front surface of the end of the chassis 1. The wiring Z led out from the end portion of the substrate 21 must pass through the end portion of the chassis 1 before reaching the lighting device 4. However, since the lid 35 on the front surface of the wiring Z conducts light, the light is emitted. The presence of the wiring Z present at the end of the main body becomes inconspicuous.

Here, with reference to FIG.3 and FIG.5, the method to attach the cover member 3 holding the three light source parts 2 to the chassis 1 is demonstrated.
When attaching the cover member 3 to the chassis 1, first, of the pair of locking portions 34 having a substantially U-shaped cross section, the U-shaped inner surface side of the locking portion 34 positioned on the outer side in the short direction of the chassis 1, The edge part 13 along the longitudinal direction of the chassis 1 is inserted. The outer surface side of the inner locking portion 34 close to the center cover 5 is locked by the stopper member 36.

  The stopper member 36 is a metal fitting bent in a key shape, and includes a locking piece portion 36a and a fixed piece portion 36b formed integrally with the locking piece portion 36a. Further, a screw through hole is formed in the fixed piece portion 36b. The locking piece portion 36a of the stopper member 36 is locked to the outer surface side of the locking portion 34 in the cover member 3, and the fixed piece portion 36b is fixed by an attachment screw 36c that passes through the screw through hole and is screwed into the chassis 1. Is done.

  As shown in FIG. 3, a plurality of stopper members 36 are provided apart from each other along the longitudinal direction of the cover member 3, and the stopper member 36 and the edge portion 13 of the chassis 1 allow the cover member 3. The movement in the front direction (the vertical direction in the figure) is regulated.

  As described above, when the cover member 3 is attached to the chassis 1, the back surface of each light source unit 2 held by the cover member 3, that is, the back surface of the substrate 21 is flat through the open portion 31 of the cover member 3. The plurality of light source units 2 are thermally coupled to the chassis 1 in contact with the arrangement unit 12. In other words, since the cover member 3 has the open portion 31, the disposing portion 12 protruding toward the front surface side of the chassis 1 enters the open portion 31, and the thermal contact between the disposing portion 12 and the substrate 21 is achieved. Bonding is possible. Further, this thermal coupling is performed simultaneously with the attachment of the cover member 3 to the chassis 1.

  In addition, the disposition portion 12 protruding to the front side of the chassis 1 fits and supports the extending wall 33c whose side wall extends to the back side of the back side support portion 33b forming the holding groove 33. ing. For this reason, the movement of the cover member 3 in the short direction (left-right direction in FIG. 5) is restricted by the arrangement portion 12 of the chassis 1.

  As shown in FIGS. 3 and 6, the lighting device 4 is attached to the front side of the top plate portion 11 of the chassis 1. The lighting device 4 controls lighting of the light source unit 2 and is configured by accommodating a circuit board on which a plurality of circuit components are mounted in a box-like case. This lighting device 4 is connected to a commercial AC power source (not shown), and converts AC to DC and outputs it. 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. The lighting device 4 is connected to the light emitting element 22 via the substrate 21, supplies the direct current output to the light emitting element 22, and controls the lighting of the light emitting element 22.

  A terminal block 7 is attached to the front side of the top plate 11. The terminal block 7 is connected to wirings not shown here such as a power supply line, a feed line, and a dimming signal line. The lighting device 4 dims the light source unit 2 based on the dimming signal.

  As shown in FIGS. 1 to 6, the center cover 5 is disposed on the front side of the top plate portion 11 of the chassis 1. The center cover 5 is formed from a metal plate such as a hot-dip galvanized steel sheet, and the side surface has a V shape. Further, at least the surface side is coated with white and functions as a reflector.

  A plurality of attachment tongues 52 are formed on an edge 51 (see FIG. 3) along the longitudinal direction in which the center cover 5 expands. On the other hand, on the chassis 1 side facing the mounting tongue piece 52, an insertion hole 14 formed by being slightly bulged and deformed to the front side by cutting is formed.

  The center cover 5 is capable of reducing the width dimension to be expanded by elastically deforming the expanding edge in the width direction around the V-shaped top. Therefore, when the center cover 5 is attached to the chassis 1, the center cover 5 is elastically deformed so as to reduce the width of the center cover 5, the attachment tongue 52 is aligned with the position of the insertion hole 14, and the elastic deformation is released. Return to the original state. Thereby, the attachment tongue piece 52 is inserted into the insertion hole 14, and the center cover 5 is attached to the chassis 1.

  When the center cover 5 is thus attached to the chassis 1, the edge 51 of the center cover 5 is brought into contact with the fixed piece portion 36 b of the stopper member 36. Therefore, for example, even if the mounting screw 36c of the stopper member 36 is loosened due to vibration with time or the like, the stopper member 36 can be prevented from being detached or excessively moved. Thereby, it can be expected that the thermal coupling between the chassis 1 and the substrate 21 is ensured.

  In addition, the lighting device 4, the terminal block 7, the wiring, and the like are covered with the center cover 5 and cannot be visually recognized from the outside, and the appearance is not impaired.

  The side plate 6 is formed of a synthetic resin material and is attached so as to close both ends of the chassis 1 in the longitudinal direction.

  According to the base light 100 configured as described above, the rear surface of the light source unit 2, that is, the rear surface of the substrate 21, is simply mounted on the chassis 1 with the cover member 3 holding the light source unit 2. It can be thermally bonded by contacting with a relatively wide surface. Therefore, the assembly workability is good, the heat dissipation of the substrate 21 can be improved, and the temperature rise of the light emitting element 22 can be suppressed.

  Further, since the end edge portion 13 along the longitudinal direction of the chassis 1 is inserted into the locking portion 34 of the cover member 3 and covered with the locking portion 34, the end edge portion 13 is not subjected to special processing. The danger resulting from the sharpness of the edge portion 13 can be avoided, and the safety of the assembly workability can be ensured.

  Further, as shown in FIG. 6, since the cover member 3 holding the light source unit 2 and the lighting device 4 are arranged side by side in the lateral direction of the chassis 1, the base light 100 can be thinned.

  Further, as shown in FIG. 5, the locking portion 34 of the cover member 3 is extended outward from the end edge portion 13 of the chassis 1, and therefore, the light emitting element 22 from the extended portion. A part of the light emitted in the lateral direction from is emitted to the outside. Furthermore, part of the light emitted from the light emitting element 22 in the lateral direction at both ends in the longitudinal direction is emitted from the translucent lid 35 to the outside. Since the light emitted to the outside irradiates the ceiling surface C, the brightness of the illumination can be increased.

  On the other hand, heat generated when each light emitting element 22 is turned on is transmitted to the wiring pattern layer 21 a, and is mainly transferred from the back side of the substrate 21 to the arrangement portion 12 of the chassis 1, and further conducted to the entire chassis 1. To dissipate heat. Thereby, the temperature rise of the light emitting element 22 can be suppressed.

  When the base light 100 is turned on, power is supplied to the lighting device 4, a direct current output is supplied to the light source unit 2 via the wiring Z, and the light emitting element 22 is energized via the substrate 21, so that each light emitting element 22 is turned on. To do. The light emitted from the light emitting element 22 is transmitted through the phosphor layer 23, diffused through the milky white translucent cover member 3, and is emitted mainly downward to illuminate a predetermined light distribution range.

  FIG. 9 is a perspective view of the base light 200 according to the embodiment with the center cover 5 separated. FIG. 10 is a partially enlarged perspective view showing the reinforcing member 40 fixed to the approximate center of the chassis 201 of the base light 200. The reinforcing member 40 is disposed inside the center cover 5 together with the lighting device 4 and the terminal block 7.

  The base light 200 has a chassis 201 that is longer than the chassis 1 of the base light 100 of the reference example described above, and the entire base light 200 is also longer than the base light 100 of the reference example. For this reason, the reinforcing member 40 is attached to the chassis 201 of the base light 200. Since the structure other than this is substantially the same as the reference example described above, the same reference numerals are given to components that function in the same manner, and detailed description thereof is omitted.

  More specifically, the chassis 201 of the base light 200 of this embodiment has a length of about 2400 mm. For example, in a base light having a chassis with a length of more than 1500 mm, there is a possibility that the chassis becomes bent or twisted only by the disposition portion 12 that functions as a reinforcing rib as in the above-described reference example.

  For this reason, in this embodiment, the reinforcing member 40 is fixedly provided at the approximate center of the chassis 201. When the length of the reinforcing member 40 is changed and the bending and twisting of the chassis 201 are observed, the length of the reinforcing member 40 is longer than ½ of the length of the chassis 201, for example, 1800 mm. It turns out that no twisting occurs. Actually, the reinforcing member 40 having a length of about 2000 mm is suitable for the 2400 mm chassis 201.

  The reinforcing member 40 is attached to the flat top plate surface 11 of the chassis 201. The approximate center referred to here is an approximate center along the longitudinal direction of the chassis 201 and an approximate center along the short side direction of the chassis 201, that is, the width direction. And the lighting device 4 and the terminal block 7 which were mentioned above were attached to this reinforcement member 40. FIG. In the present embodiment, the power supply terminal block 7 a and the dimming terminal block 7 b are attached to the reinforcing member 40.

  The reinforcing member 40 is obtained by processing a substantially rectangular elongated plate-like body. Specifically, the reinforcing member 40 includes elongated reinforcing ribs 41 and 42 that rise in the direction of separating both edges along the longitudinal direction from the chassis 201. The reinforcing ribs 41 and 42 at both ends in the width direction of the reinforcing member 40 continuously extend over the entire length of the reinforcing member 40. The reinforcing member 40 is fixed to the chassis 201 by, for example, welding.

  The reinforcing ribs 41 and 42 are provided with a plurality of hooks 41a and 42a for hooking and holding the wiring Z to which the lighting device 4 is connected and the wiring Z to which the terminal blocks 7a and 7b are connected. Each hook 41a, 42a is formed by forming a notch from the tip of the reinforcing ribs 41, 42 spaced from the chassis 201. Each notch extends partway from the distal end of the reinforcing ribs 41 and 42 toward the base end, that is, toward the bent portion of the reinforcing rib, and does not reach the full width of the reinforcing ribs 41 and 42. For this reason, the formation of the hooks 41a and 42a can prevent a problem that the reinforcing ribs 41 and 42 lower the mechanical strength more than necessary.

  The hooks 41a and 42a provided on the two reinforcing ribs 41 and 42 are provided in a positional relationship that is offset from each other. That is, the hook 42a of the other reinforcing rib 42 is not provided at a position facing the hook 41a formed on the one reinforcing rib 41, and one is positioned at a position facing the hook 42a formed on the other reinforcing rib 42. The hook 41a of the reinforcing rib 41 is not provided. As a result, the hooks 41a and 42a are provided at the same length positions of the left and right reinforcing ribs 41 and 42, so that stress can be prevented from concentrating on the part and causing problems such as bending. A structure with high strength can be provided.

  According to the lighting fixture of the embodiment described above, since the reinforcing member 40 is attached to the approximate center of the relatively long chassis 201, a long base light can be realized without causing the chassis 201 to bend or twist. In addition, since the hooks 41a and 42a are provided on the reinforcing ribs 41 and 42 raised from the edge along the longitudinal direction of the reinforcing member 40, a binding band for holding the wiring Z and an M-type clamp become unnecessary, and the number of parts is accordingly increased. The base light 200 can be manufactured at a low cost.

  In particular, since the notches for providing the hooks 41a, 42a are not formed in the entire width of the reinforcing ribs 41, 42, but in the middle of the reinforcing ribs 41, 42, the strength reduction of the reinforcing ribs 41, 42 can be suppressed, Mechanical strength can be maintained. Furthermore, according to the present embodiment, since the positions of the hooks 41a and 42a provided on the two reinforcing ribs 41 and 42 facing each other in the width direction of the reinforcing member 40 are set to offset positions that do not face each other, the bending due to the stress concentration is caused. And the like, and the reliability of the apparatus can be improved.

  The above-described embodiments are presented as examples and are not intended to limit the scope of the invention. The above-described embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. The above-described embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and spirit of the invention.

  For example, in the above-described embodiment, the case where an LED is used as an example of the light emitting element 22 is described. However, the present invention is not limited to this, and other individual light emitting elements such as an organic EL may be used.

  DESCRIPTION OF SYMBOLS 1,201 ... Chassis, 2 ... Light source part, 3 ... Cover member, 4 ... Lighting apparatus, 5 ... Center cover, 6 ... Side plate, 7, 7a, 7b ... Terminal block, 12 ... Arrangement part, 21 ... Board | substrate, 22 ... Light emitting element (LED) 32... Opening 35. Lid 40. Reinforcing member 41 and 42 Rib 41a and 42a Hook 100 and 200 Base light Z Wiring

Claims (4)

An elongated substrate mounted with a light emitting element;
An elongated plate-like chassis attached with the substrates connected in the longitudinal direction;
It has a length exceeding half of the entire length of the chassis, and has a reinforcing rib that rises in the direction away from the chassis along the longitudinal direction thereof, and is provided at the center along the longitudinal direction of the chassis. A fixed reinforcing member;
A lighting fixture having.   The lighting fixture according to claim 1, wherein the reinforcing rib has a hook for hooking a wiring for connecting a lighting device and a terminal block.   The lighting device according to claim 2, wherein the hook is formed by forming a notch extending partway from the distal end of the reinforcing rib toward the proximal end. The reinforcing rib is raised from both edges along the longitudinal direction of the reinforcing member,
The lighting fixture according to claim 3, wherein the notch is provided in a positional relationship offset from each other on the two reinforcing ribs raised from the both edges.

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