JP2017152158A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components.SOLUTION: A fixture body 2 includes: a housing 20 formed in a longitudinal gutter shape; a pair of end members 21 respectively blocking longitudinal both ends of the housing 20; and a cover 22 formed into a plate state with translucent material and blocking the open end of the housing 20 along the longitudinal direction. The housing 20 includes: a pair of side walls 201 adjacent to the open end; and a pair of base parts 202 projecting along the longitudinal direction of the housing 20 from the inside surfaces of the pair of side walls 201. A pair of base parts 202 are formed so as to be integrated with the pair of side walls 201. With respect to the pair of base parts 202, light source units 3 are mounted on a surface (front surface) at a side facing the cover 22.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture that uses a solid light source such as a light emitting diode as a light source.

  As a conventional example, an LED lighting apparatus described in Patent Document 1 is illustrated. The LED lighting apparatus described in Patent Document 1 (hereinafter referred to as a conventional example) is a tunnel lamp that is attached to an inner wall surface of a tunnel and performs tunnel illumination.

  This conventional example includes an instrument body, a power supply device, a translucent panel, a plurality of LEDs, an LED fixing plate, and the like. The instrument body is formed in a flat rectangular box shape with an open front surface. The plurality of LEDs are attached to the LED fixing plate. The LED fixing plate is attached to the inner surface of the bottom plate of the instrument body by two pairs of fixing plate supports. A power supply device is attached to the inner surface of the bottom plate of the instrument body. Moreover, the translucent panel is attached to the instrument main body by a hinge so as to be rotatable between a position where the front surface of the instrument main body is closed and a position where the front is opened.

JP 2011-175784 A

  Incidentally, in the conventional example described in Patent Document 1, the instrument main body and the plurality of fixing plate supports are configured as independent parts. Therefore, the plurality of fixing plate supports are attached to the inner surface of the bottom plate of the instrument body by an appropriate method such as welding or screwing. However, in the configuration as in the conventional example described in Patent Document 1, the number of parts increases due to the fixed plate support.

  The objective of this invention is providing the lighting fixture which can aim at reduction of a number of parts.

  The lighting fixture which concerns on 1 aspect of this invention is equipped with the light source unit and the fixture main body which accommodates the said light source unit in an inside. The instrument body is formed in a plate shape with a casing formed in a long bowl shape, a pair of end members that respectively close both ends in the longitudinal direction of the casing, and a material having translucency, And a cover for closing the open end along the longitudinal direction of the housing. The casing includes a pair of side walls adjacent to the open end, and a pair of base portions protruding along the longitudinal direction of the casing from the inner side surfaces of the pair of side walls. The pair of base portions are formed integrally with the pair of side walls. The light source unit is attached to a surface of the pair of base portions facing the cover.

  The lighting fixture according to one embodiment of the present invention has an effect that the number of parts can be reduced.

FIG. 1 is an exploded perspective view of a lighting fixture according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the luminaire described above. FIG. 3 is a perspective view of the same lighting fixture. FIG. 4A is a front view of the same lighting fixture. FIG. 4B is a plan view of the luminaire described above. FIG. 4C is a left side view of the same lighting fixture. FIG. 5A is a side view of a fixture body in a lighting fixture according to another embodiment of the present invention. FIG. 5B is a side view of the fixture main body and the light source unit in the same lighting fixture.

  Hereinafter, the lighting fixture 1 which concerns on one Embodiment of this invention is demonstrated in detail with reference to drawings. The luminaire 1 according to this embodiment (hereinafter abbreviated as luminaire 1) is a luminaire (tunnel lamp) used for tunnel illumination, as in the conventional example described in Patent Document 1. However, the lighting fixture 1 is not limited to a tunnel light. The configurations described in the following embodiments are merely examples of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  As shown in FIG. 1, the lighting fixture 1 includes a fixture body 2 and a light source unit 3. Moreover, it is preferable that the lighting fixture 1 is further provided with the attachment member 4, the power supply unit 5, the two control units 6, the transformer unit 7, etc. FIG. In the following description, in FIG. 1, the vertical direction, front-rear direction, and left-right direction of the lighting fixture 1 are defined.

  The light source unit 3 preferably has three types of light source units (a first light source unit 3A, a second light source unit 3B, and a third light source unit 3C). The first light source unit 3A includes two substrates 30, a plurality of LEDs (light emitting diodes) mounted on the front surfaces of the two substrates 30, and two attached to the two substrates 30, respectively. It is preferable to have the lens unit 31A. The substrate 30 is formed in a rectangular plate shape. The two lens units 31A each have a rectangular plate-shaped base portion 310, a plurality (30 in the illustrated example) of lenses 311A, and four attachment portions 312. Each of the lenses 311A is formed in a dome shape in which a spheroid is roughly divided in half along the major axis. Two each of the four attachment portions 312 are provided approximately at the center of the two side surfaces along the longitudinal direction (left-right direction) of the base portion 310. Here, the components such as the base portion 310, the lens 311A, and the mounting portion 312 of the lens unit 31A are integrally formed as a molded body of a synthetic resin material having translucency and elasticity such as polycarbonate resin and acrylic resin. Is preferred. However, in the lens unit 31A, the components other than the attachment portion 312 may be made of glass (for example, quartz glass). The second light source unit 3B and the third light source unit 3C have the same configuration as the first light source unit 3A except for the lens 311B of the lens unit 31B and the lens 311C of the lens unit 31C.

  Each of the three types of light source units 3 is attached to three attachment members 4 (see FIGS. 1 and 2). These three attachment members 4 each have a pair of first leg portions 40, a pair of second leg portions 41, and an attachment portion 42. Furthermore, it is preferable that the three attachment members 4 each have a pair of reinforcing portions 43. The attachment portion 42 is generally formed in a rectangular plate shape. The light source unit 3 is attached to the front surface of the attachment portion 42 by screwing. The pair of first leg portions 40 respectively project rearward from the upper end portions at both ends in the longitudinal direction (left-right direction) of the attachment portion 42. A pair of 1st leg part 40 is formed in the L shape seeing from the up-down direction. In addition, semi-circular screw insertion grooves 400 are respectively provided at the rear end portions of the pair of first leg portions 40. The pair of second leg portions 41 protrudes rearward from the lower end portions at both ends in the longitudinal direction (left-right direction) of the attachment portion 42. A pair of 2nd leg part 41 is formed in the L-shape seeing from the up-down direction. Also, semi-circular screw insertion grooves 410 are provided at the rear end portions of the pair of second leg portions 41, respectively. Each of the pair of reinforcing portions 43 has a rectangular plate shape and is configured to protrude rearward from the upper end edge and the lower end edge of the attachment portion 42. In addition, it is preferable that a pair of 1st leg part 40, a pair of 2nd leg part 41, the attaching part 42, and a pair of reinforcement part 43 are integrally formed by bending metal plates, such as a steel plate.

  The power supply unit 5 includes a circuit block 50 in which various electronic components are mounted on a long printed wiring board, and a power supply case 51 that houses the circuit block 50 (see FIG. 1). The circuit block 50 is configured to convert an AC voltage / current supplied from the power system into a DC voltage / current. In addition, the circuit block 50 is configured to adjust (light control) the light output (light flux) of the light source unit 3 by increasing or decreasing the direct current output current under the control of the control unit 6.

  Each of the two control units 6 includes a control circuit block 60 in which an electronic component such as an electrolytic capacitor is mounted on a rectangular printed wiring board, and a case 61 that houses the control circuit block 60. Each of these two control circuit blocks 60 smoothes (integrates) a dimming signal including, for example, a PWM (pulse width modulation) signal, and outputs a smoothed voltage signal (control signal) to the circuit block 50 of the power supply unit 5. Is configured to do. The circuit block 50 of the power supply unit 5 adjusts the DC output current according to the control signals output from the control circuit blocks 60 of the two control units 6.

  The transformer unit 7 uses a high voltage (for example, an AC voltage having an effective value of 415 [V]) supplied from the power system as a rated input voltage (for example, an AC voltage having an effective value of 200 [V] or less). ). The transformer unit 7 includes a down transformer (step-down transformer) and a case 70. The case 70 is formed in a long rectangular tube shape by a metal plate material. Case 70 houses a down transformer therein. That is, the transformer unit 7 supplies the power supply unit 70 with the AC voltage stepped down by the down transformer. The lighting fixture 1 may include an emergency lighting unit. The emergency lighting unit may be configured to store the AC power supplied from the power system in the storage battery, and supply the power stored in the storage battery to the power supply unit 70 in the event of a power failure in the power system to perform emergency lighting. preferable.

  The instrument body 2 includes a housing 20, a pair of end members 21, and a cover 22. Moreover, it is preferable that the instrument main body 2 further includes a first seal member 23, a mounting screw 24, a second seal member 25, a fixture 26, and the like.

  As shown in FIG. 2, the housing 20 includes a pair of side walls 201 and a pair of base parts 202. The housing 20 preferably includes a bottom wall 200, four screw receiving portions 203, a pair of storage portions 204, and the like. The bottom wall 200 is formed in a long rectangular plate shape whose longitudinal direction is the left-right direction. Each of the pair of side walls 201 has a long rectangular plate shape, and is integrally formed with the bottom wall 200 so as to protrude forward from the edges of both ends (upper and lower ends) along the longitudinal direction of the bottom wall 200. Yes. In other words, the housing 20 is formed in a square hook shape with the front surface and both left and right end surfaces opened.

  Each of the pair of base parts 202 is formed in a long rectangular plate shape equal to the length of the side wall 201 in the longitudinal direction (left-right direction). One base portion 202 is formed integrally with the side wall 201 so as to protrude downward from the substantially center in the front-rear direction on the inner side surface of the upper side wall 201 in parallel with the bottom wall 200. The other base portion 202 is formed integrally with the side wall 201 so as to protrude upward and parallel to the bottom wall 200 from the substantially center in the front-rear direction on the inner side surface of the lower side wall 201.

  Each of the four screw receiving portions 203 has a C shape when viewed from the axial direction (left-right direction), and is formed in a cylindrical shape having a length equal to the length of the side wall 201 in the longitudinal direction (left-right direction). (See FIGS. 1 and 2). The two screw receiving portions 203 are respectively provided at the inner portion (corner) of the joint between the bottom wall 200 and the upper side wall 201 and at the inner portion (corner) of the joint between the bottom wall 200 and the lower side wall 201. One by one. The remaining two screw receiving portions 203 are arranged one by one on the inner side surfaces (upper surface and lower surface) of each side wall 201 at a position between the open ends (front ends) of the pair of side walls 201 and the pair of base portions 202. (See FIG. 2). Each of the four screw receiving portions 203 has a female screw formed on the inner peripheral surface of both end portions (both left and right ends) in the axial direction.

  Each of the pair of storage portions 204 is L-shaped when viewed from the left-right direction, and is formed in a plate shape having a length equal to the length of the side wall 201 in the longitudinal direction (left-right direction) (FIGS. 1 and 2). One storage portion 204 is disposed on the inner side surface (upper surface) of the upper side wall 201 at a position between the open end (front end) of the upper side wall 201 and the upper base portion 202 (see FIG. 2). ). The other storage portion 204 is disposed on the inner side surface (lower surface) of the lower side wall 201 at a position between the open end (front end) of the lower side wall 201 and the lower base portion 202 ( (See FIG. 2).

  Furthermore, the housing 20 preferably includes three bolt holding portions 205. Two bolt holding portions 205 (hereinafter may be referred to as first bolt holding portions 205 </ b> A) are arranged one by one on the rear surfaces of the tips of the pair of base portions 202. The remaining one bolt holding part 205 (hereinafter sometimes referred to as the second bolt holding part 205B) is disposed at the substantially vertical center of the bottom wall 200. The two first bolt holding portions 205 </ b> A have a length equal to the length of the pair of base portions 202 in the longitudinal direction (left-right direction), and project from the rear surface of each base portion 202 to the rear. It is formed in a cylindrical shape. However, in each of the pair of base parts 202, two grooves 206A and 206B connected to the internal spaces of the two first bolt holding parts 205A are formed over the entire length in the longitudinal direction (left and right direction) (see FIG. 1 and FIG. 1). (See FIG. 2). Each of the two first bolt holding portions 205A holds the head 10 in the internal space and holds the plurality of bolts 10 such that the screw portion 12 protrudes from the groove 206A (see FIG. 2).

  On the other hand, the second bolt holding portion 205 </ b> B is configured by a pair of protruding strips protruding forward from the center of the front surface of the bottom wall 200. The pair of protruding strips are formed in an L shape when viewed from the left-right direction. The second bolt holding portion 205B has an internal space surrounded by the pair of protrusion pieces and the bottom wall 200, and a groove 206B provided between the tip portions of the pair of protrusion pieces (see FIG. 2). The second bolt holding portion 205B holds a plurality of bolts such that the head is housed in the internal space and the thread portion protrudes from the groove 206B. However, the first bolt holding portion 205A and the second bolt holding portion 205B hold the bolt 10 so as to be movable along the longitudinal direction (left-right direction).

  In addition, rectangular recesses 207 along the longitudinal direction of the side wall 201 are respectively provided between the screw receiving portion 203 and the storage portion 204 on the inner side surfaces of the pair of side walls 201 (see FIG. 2). Four mounting brackets 208 are fixed to the pair of recesses 207, respectively. Each of the eight mounting brackets 208 has a fixed piece 2080 and a mounting piece 2081. The fixed piece 2080 and the attachment piece 2081 are preferably formed integrally by bending a metal plate. These mounting brackets 208 are fixed to the side wall 201 by the fixing piece 2080 being fitted into the recess 207 of the side wall 201 (see FIG. 2). Further, a screw hole 2082 is formed at the tip of the mounting piece 2081 (see FIG. 2).

  Here, the casing 20 may be integrally formed with a bottom wall 200, a side wall 201, a base portion 202, a screw receiving portion 203, a storage portion 204, and a bolt holding portion 205 by extrusion molding of aluminum or an aluminum alloy. preferable. That is, the pair of base parts 202 are formed integrally with the housing 20 as a part of the housing 20, not as separate components.

  Each of the pair of end members 21 includes a side plate 210, a peripheral wall 211, four bosses 212, and a storage recess 213. The side plate 210 is formed in a substantially rectangular plate shape. The peripheral wall 211 is formed so as to protrude from the upper end, lower end, and rear end of the side plate 210 in the thickness direction (left-right direction) of the side plate 210. However, the front end portion of the peripheral wall 211 is located behind the front end of the side plate 210. And the storage recessed part 213 is comprised so that it may be enclosed by the front-end part of the side plate 210, and the front-end part of the surrounding wall 211 (refer FIG. 1). Each of the four bosses 212 is formed in a cylindrical shape. However, the two bosses 212 are disposed at both corners of the side plate 210 and the peripheral wall 211, respectively. Further, the remaining two bosses 212 are disposed near the front at the upper and lower ends of the side plate 210, respectively.

  Each of the pair of end members 21 is attached to an end of the housing 20 in the longitudinal direction (left-right direction). That is, each of the pair of end members 21 is screwed to the female screws of the four screw receiving portions 203 of the housing 20 with the four screws 215. That is, four screws 215 are inserted into four screw insertion holes that respectively penetrate the four bosses 212, and these four screws 215 are respectively screwed into the female screws of the four screw receiving portions 203. As a result, the pair of end members 21 are attached to the casing 20 so as to close the openings at the left and right ends of the casing 20 (see FIG. 3). In addition, in a state where the pair of end members 21 are attached to the housing 20, the housing recesses 213 of the pair of end members 21 and the housing portion 204 of the housing 20 are connected.

  The fixture 26 has a screwing piece 260 screwed to the end member 21 and an attachment piece 261 attached to a place to be attached (for example, the inner wall of the tunnel) (see FIG. 1). However, it is preferable that the fixing member 26 be formed integrally with the screwing piece 260 and the attachment piece 261 by bending a rectangular plate material into an L shape.

  The first seal member 23 is preferably composed of, for example, an annular gasket made of silicone resin (see FIG. 1). The first seal member 23 is housed in the housing portions 204 of the pair of side walls 201 and the housing recesses 213 of the pair of end members 21 (see FIG. 2).

  The cover 22 is formed in a shape obtained by rounding four corners of a long rectangle with a light-transmitting material (glass, acrylic resin, polycarbonate resin, or the like). The cover 22 is provided with four round holes 220 in the upper part and the lower part, respectively. The four round holes 220 provided in the upper part of the cover 22 are arranged so as to be arranged on the straight line at equal intervals along the longitudinal direction (left-right direction) of the cover 22. Further, the four round holes 220 provided in the lower part of the cover 22 are arranged so as to be arranged on the straight line at equal intervals along the longitudinal direction (left-right direction) of the cover 22.

  Each of the eight second seal members 25 has a cylindrical body portion 250 and a disk-shaped outer flange portion 251 that protrudes in the radial direction of the body portion 250 from one axial end (front end) of the body portion 250. (See FIG. 1). In addition, it is preferable that the trunk | drum 250 and the outer collar part 251 are integrally formed with the material which has elasticity, such as a silicone resin. Each of the eight mounting screws 24 is a hexagon bolt with a collar.

  Next, a procedure for assembling the lighting fixture 1 will be described. An operator who performs the assembly work causes the second bolt holding part 205 </ b> B of the bottom wall 200 of the housing 20 to hold a plurality of bolts. Then, the operator screws the power supply case 51 of the power supply unit 5, the case 61 of the control unit 6, and the case 70 of the transformer unit 7 to the plurality of bolts. As a result, the power supply unit 5, the control unit 6, and the transformer unit 7 are fixed to the bottom wall 200 of the housing 20. In this way, if the power supply case 51 or the like is screwed to the bolt held by the second bolt holding portion 205B provided in the housing 20, a bolt hole is not required in the bottom wall 200 of the housing 20. is there. Therefore, the waterproof structure of the housing 20 can be simplified as compared with a case where a bolt hole is provided in the bottom wall 200 of the housing 20.

  Subsequently, the worker holds the six bolts 10 in the first bolt holding portions 205 </ b> A of the pair of side walls 201. Then, the worker attaches the three attachment members 4 to which the first to third light source units 3 </ b> A to 3 </ b> C are attached to the pair of base portions 202 of the housing 20. First, the operator is held by the pair of first bolt holding portions 205 </ b> A in the screw insertion grooves 400 of the first leg portions 40 and the screw insertion grooves 410 of the second leg portions 41 of the three attachment members 4. The threaded portions 12 of the twelve bolts 10 are respectively inserted. Further, the operator tightens the nut 13 on the screw portion 12 of the bolt 10 inserted through the screw insertion grooves 400 and 410. As a result, the three attachment members 4 are attached to the pair of base portions 202 of the housing 20 (see FIG. 2). The operator can move the attachment member 4 together with the bolt 10 and the nut 13 while the nut 13 is loosened.

  Next, the worker attaches one end member 21 to each of the left and right ends of the housing 20. The operator inserts the four screws 215 into the four screw insertion holes of each end member 21, and screws the four screws 215 into the female screws of the four screw receiving portions 203 of the housing 20, respectively. As a result, the pair of end members 21 are attached to the housing 20 so as to close the openings at the left and right ends of the housing 20.

  Then, the operator stores the first seal member 23 in the storage portion 204 of the housing 20 and the storage recess 213 of the pair of end members 21. Then, the operator puts the cover 22 on the front end of the housing 20 from the front of the first seal member 23, and inserts the body portions 250 of the eight second seal members 25 into the eight round holes 220 of the cover 22 from the front. To do. Finally, the operator inserts the eight mounting screws 24 into the eight second seal members 25, respectively, and screws them into the screw holes 2082 of the eight mounting brackets 208 attached to the recesses 207 of the pair of side walls 201, respectively. . As a result, the cover 22 is attached to the housing 20 in a state of being sealed by the first seal member 23 (see FIGS. 3 and 4A to 4C). In the configuration in which the cover 22 is screwed to the housing 20 as described above, the number of parts can be reduced and the cover can be attached to the housing by a hinge as in the conventional example described in Patent Document 1. The housing 20 can be downsized.

  As described above, the light source unit 3 is attached to the pair of base parts 202 formed integrally with the housing 20. Therefore, the lighting fixture 1 can aim at reduction of a number of parts compared with the case where a light source unit is attached to the some fixing plate support tool which is a component separate from the fixture main body.

  The light source unit 3 is preferably attached to the pair of base portions 202 by the attachment member 4. That is, if the light source unit 3 is attached to the pair of base portions 202 using the attachment member 4, the irradiation range of the light beam emitted from the light source unit 3 can be adjusted by the attachment member 4. That is, according to the length (height) of the first leg portion 40 of the attachment member 4 and the length (height) of the second leg portion 41, the attachment portion 42 of the attachment member 4 with respect to the pair of base portions 202. Therefore, the irradiation range of the light source unit 3 can be adjusted by the mounting member 4.

  As described above, the lighting fixture 1 includes the light source unit 3 and the fixture body 2 that houses the light source unit 3 therein. The instrument body 2 is formed in a plate shape with a casing 20 formed in a long bowl shape, a pair of end members 21 that respectively close both ends of the casing 20 in the longitudinal direction, and a translucent material. And a cover 22 that closes an open end along the longitudinal direction of the housing 20. The housing 20 includes a pair of side walls 201 adjacent to the open end, and a pair of base portions 202 protruding from the inner side surfaces of the pair of side walls 201 along the longitudinal direction of the housing 20. The pair of base portions 202 are formed integrally with the pair of side walls 201. The light source unit 3 is attached to a surface (front surface) of the pair of base portions 202 facing the cover 22.

  If the luminaire 1 is configured as described above, the light source unit 3 is attached to the pair of base portions 202 formed integrally with the housing 20, so that the housing and the base portion are configured separately. The number of parts can be reduced compared to the case where the

  Moreover, in the lighting fixture 1, it is preferable to provide the attachment member 4 for attaching the light source unit 3 to a pair of base parts 202. FIG.

  If the lighting fixture 1 is configured as described above, the irradiation range of the light beam emitted from the light source unit 3 can be adjusted by the mounting member 4.

  Further, in the lighting fixture 1, the attachment member 4 includes a first leg portion 40 fixed to one base portion 202 of the pair of base portions 202 and the other base of the pair of base portions 202. It is preferable to have the 2nd leg part 41 fixed to the base part 202. FIG. The attachment member 4 preferably has a plate-like attachment portion 42 that is bridged between the first leg portion 40 and the second leg portion 41. It is preferable that the light source unit 3 is attached to the attachment portion 42.

  If the lighting fixture 1 is configured as described above, the inclination of the attachment portion 42 of the attachment member 4 with respect to the pair of base portions 202 changes according to the length of the first leg portion 40 and the second leg portion 41. The irradiation range of the light source unit 3 can be adjusted by the mounting member 4.

  By the way, as shown in FIG. 5A, the pair of base portions 202 are arranged so as to gradually move away from the cover (front end of the side wall 201) on the surface (front surface) to which the light source unit 3 is attached. A plurality of steps 2021 to 2025 may be arranged. That is, the pair of base portions 202 may be formed in a step shape. In the following description, the plurality of steps are referred to as a first step 2021, a second step 2022, a third step 2023, a fourth step 2024, and a fifth step 2025 in order from the front end of the side wall 201. There is a case.

  In the first step 2021 of the upper base 202 and the fifth step 2025 of the lower base 202, the respective front surfaces (mounting surfaces of the light source units 3) are part of the same plane. It is formed as follows. Further, the second step 2022 of the upper base portion 202 and the fourth step 2024 of the lower base portion 202 are formed so that the front surfaces thereof are part of the same plane. . Further, the third step 2023 of the upper base portion 202 and the third step 2023 of the lower base portion 202 are formed so that the front surfaces thereof are part of the same plane. . Further, the fourth step 2024 of the upper base portion 202 and the second step 2022 of the lower base portion 202 are formed so that the front surfaces thereof are part of the same plane. . Further, the fifth step 2025 of the upper base portion 202 and the first step 2021 of the lower base portion 202 are formed so that the front surfaces thereof are part of the same plane. .

  As illustrated in FIG. 5B, the light source unit 3 may be attached to the front surface of the first step 2021 of the upper base portion 202 and the front surface of the fifth step 2025 of the lower base portion 202. . Alternatively, when the light source unit 3 is attached to the front surface of the second step 2022 of the upper base portion 202 and the front surface of the fourth step 2024 of the lower base portion 202, as shown in FIG. 5B. There is. Alternatively, as shown in FIG. 5B, the light source unit 3 is attached to the front surface of the third step 2023 of the upper base portion 202 and the front surface of the third step 2023 of the lower base portion 202. There is. Furthermore, as shown in FIG. 5B, the light source unit 3 is attached to the front surface of the fourth step 2024 of the upper base portion 202 and the front surface of the second step 2022 of the lower base portion 202. There is. Alternatively, as shown in FIG. 5B, the light source unit 3 is attached to the front surface of the fifth step 2025 of the upper base portion 202 and the front surface of the first step 2021 of the lower base portion 202. There is. That is, the light source unit 3 is attached to the pair of base portions 202 by any one of the five attachment methods described above.

  Here, the irradiation range (vertical angle) of the light beam emitted from the light source unit 3 is different for each of the five attachment methods described above. That is, the light beam irradiation range of the light source unit 3 can be adjusted by the difference in the mounting direction (mounting direction) of the light source unit 3 with respect to the pair of base parts 202. However, the number of steps of the base portion 202 formed in a step shape is not limited to five steps, and may be two to four steps or six steps or more.

  As described above, in the lighting fixture 1, the pair of base portions 202 are arranged so as to gradually move away from the cover (front end of the side wall 201) on the surface (front surface) to which the light source unit 3 is attached as the distance from the side wall 201 increases. It is preferable to have a plurality of steps 2021 to 2025 arranged side by side. Each of the pair of base parts 202 is preferably formed in a staircase shape.

  If the lighting fixture 1 is comprised as mentioned above, according to the attachment method (attachment method) of the light source unit 3 with respect to a pair of base part 202, the irradiation range of the light beam of the light source unit 3 will be adjustable.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Appliance main body 3 Light source unit 4 Attachment member 20 Case 21 End member 22 Cover 40 1st leg part 41 2nd leg part 42 Attachment part 201 Side wall 202 Base part 2021-2025 Step

Claims (4)

A light source unit, and an instrument body that houses the light source unit inside,
The instrument body is formed in a plate shape with a casing formed in a long bowl shape, a pair of end members that respectively close both ends in the longitudinal direction of the casing, and a material having translucency, A cover for closing an open end along the longitudinal direction of the housing;
The housing includes a pair of side walls adjacent to the open end, and a pair of base portions protruding along the longitudinal direction of the housing from the inner side surfaces of the pair of side walls,
The pair of base portions are formed integrally with the pair of side walls,
The light source unit is attached to a surface of the pair of base portions facing the cover.   The lighting fixture according to claim 1, further comprising an attachment member for attaching the light source unit to the pair of base portions. The mounting member includes a first leg portion fixed to one of the pair of base portions and a first leg portion fixed to the other base portion of the pair of base portions. Two leg portions, and a plate-like attachment portion spanned between the first leg portion and the second leg portion,
The lighting apparatus according to claim 2, wherein the light source unit is attached to the attachment portion.   Each of the pair of base portions has a plurality of steps arranged on the surface to which the light source unit is attached in a direction that gradually moves away from the cover as the distance from the side wall increases. The lighting fixture of any one of Claims 1-3 characterized by the above-mentioned.

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