JP2016126947A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture which has improved workability of replacement of a light distribution control member.SOLUTION: A lighting fixture 1 includes a light source unit 2 for accommodating a light source inside, a light distribution control member 3, a holding member 4, a case 5 and a support part 6 for supporting the light source unit 2 and the case 5. The holding member 4 arranges the light distribution control member 3 at an opening end 24 of a housing 22 of the light source unit 2 and holds it. On an outside surface of the housing 22, a groove 23 is formed which reaches a lens 26 on an upper surface of the housing 22 along an axial direction. At a portion corresponding to the groove 23 out of the portion which comes into contact with the housing 22 in the holding member 4, a rib 41 fitted in the groove 23 is formed. On an inner peripheral surface of the case 5, a restriction part 53 is formed which comes into contact with an opposite side of the portion which comes into contact with the housing 22 in the holding member 4, and which restricts the movement of the holding member 4.SELECTED DRAWING: Figure 3

Description

  The present invention relates generally to a lighting fixture, and more particularly to a lighting fixture having a light distribution control member.

  Conventionally, a lamp body (light source unit) on which a light source lamp is mounted, a cylindrical hood part (equipment case) attached to the lamp body and open on both sides, and a disk-shaped color filter (light distribution control member) There was a spotlight provided (see, for example, Patent Document 1). The hood portion is attached to the lamp body so as to cover the periphery of the light source lamp, and the disc-shaped color filter is attached to the hood portion and disposed in front of the light source lamp. A lamp body is detachably attached to one opening of the hood, and light from the light source lamp that has passed through the disk-shaped color filter is emitted from the other opening of the hood. The disc-shaped color filter is inserted from one opening of the hood portion in a state where it is removed from the lamp body, and is disposed at a position covering the other opening. The disk-shaped color filter is sandwiched between the step portion on the other opening side of the hood portion and the filter pressing ring, and the position is regulated.

JP 2006-19170 A

  In the luminaire described in Patent Document 1, in order to replace the disc-shaped color filter (light distribution control member), a hand is placed from one opening of the hood (apparatus case) to the mounting position near the other opening. I had to put it in. Therefore, if the front and rear dimensions of the hood part (the dimension from the edge part of one opening part to the edge part of the other opening part) are large, it is difficult to reach the mounting position and it is difficult to replace the disc-shaped color filter. There was a problem.

  This invention is made in view of the said subject, and it aims at providing the lighting fixture which improved the workability | operativity of replacement | exchange of a light distribution control member.

  In order to solve the above problems, a lighting fixture of the present invention includes a light source unit, a light distribution control member, a holding member, a fixture case, and a support portion that supports the light source unit and the fixture case, and It is comprised like this. The light source unit includes a light source and a casing that is formed in a bottomed cylindrical shape with one end open, accommodates the light source therein, and extracts light from the light source from the one end. The light distribution control member controls light distribution of the light from the light source. The holding member arranges and holds the light distribution control member at an opening end of the housing. The instrument case is formed in a bottomed cylindrical shape with one end open, a window hole for taking out light from the light source is formed on the bottom surface, and the light source unit, the light distribution control member, and the holding member are disposed inside. Store. A groove reaching the opening end along the axial direction is formed on the outer surface of the housing. Of the portion of the holding member that contacts the housing, a portion that corresponds to the groove is formed with a rib that fits into the groove. On the inner side surface of the instrument case, a regulating portion is formed that regulates the movement of the holding member in contact with the opposite side of the holding member in contact with the housing.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which improved the workability | operativity of replacement | exchange of a light distribution control part is realizable.

It is a perspective view of the lighting fixture which concerns on embodiment. It is a front view of the lighting fixture which concerns on embodiment. It is an AA line sectional view of a lighting fixture concerning an embodiment. It is a cross-sectional perspective view explaining the other principal part of the lighting fixture which concerns on embodiment. It is a disassembled perspective view explaining the principal part of the lighting fixture which concerns on embodiment. It is a cross-sectional perspective view explaining the principal part of the lighting fixture which concerns on embodiment. It is a bottom view explaining the other principal part of the lighting fixture which concerns on embodiment. It is sectional drawing explaining the other principal part of the lighting fixture which concerns on the modification of embodiment.

  Hereinafter, the lighting fixture 1 of this embodiment is demonstrated based on figures. In the following description, the directions of the arrows shown in FIG. 1 are defined as the front-rear direction, the vertical direction, and the left-right direction. This direction is defined for convenience of explanation, and is not intended to limit the direction in the actual use state to the above direction.

  The luminaire 1 is used as, for example, a spot luminaire attached to a building construction surface (wall material or the like). Moreover, it is comprised so that the light distribution control member which controls the light distribution of the light from a light source can be attached so that attachment or detachment is possible, so that the illumination range can be changed without changing the installation place and angle of the lighting fixture 1.

  Moreover, the luminaire 1 has improved waterproofness by sandwiching an elastic member (for example, packing) between members at a location where water entry is desired to be suppressed so that it can be used outdoors.

  As illustrated in FIGS. 1 and 2, the lighting fixture 1 includes a case 5 (an appliance case) and a support portion 6 that supports the case 5.

  The case 5 is made of an aluminum die cast product, and is formed in a bottomed cylindrical shape with one end (the lower end in the present embodiment) opened. A light source unit 2 described later is housed inside the case 5. A window 51 for taking out light from the light source unit 2 is formed in a frame 51 (bottom surface) forming the bottom surface (upper surface in the present embodiment) of the case 5.

  As shown in FIG. 3, a convex portion 506 is formed at the edge of the opening of the case 5 (downward opening in the present embodiment). An annular groove 505 that fits into the convex portion 506 is formed at the edge of the opening end of the support portion 6. The case 5 is attached to the support portion 6 with the convex portion 506 of the case 5 fitted in the groove 505.

  The case 5 and the light source unit 2 are screwed to the support portion 6. The support portion 6 is made of an aluminum die cast product and is formed in a cylindrical shape having substantially the same diameter as the case 5, and the peripheral surface of the support portion 6 is flush with the peripheral surface of the case 5 with the case 5 attached. It becomes.

  A hinge portion 71 is provided on the peripheral surface of the support portion 6 (in this embodiment, the left peripheral surface in FIG. 1). The hinge portion 71 is made of an aluminum die-cast molded product that is integrally formed with the support portion 6. The hinge portion 71 is formed in a cylindrical shape, and is provided so that the shaft is in the radial direction of the support portion 6 (the front-rear direction in the present embodiment). On the front surface of the hinge portion 71, a hinge portion 72 formed in a cylindrical shape having substantially the same diameter as the hinge portion 71 is disposed. The hinge portion 71 and the hinge portion 72 are arranged to overlap in the front-rear direction so as to be coaxial. The hinge portion 71 and the hinge portion 72 are formed with holes 73 for passing bolts through the shafts. The hinge portion 71 and the hinge portion 72 are sandwiched between the bolts and nuts passed through the holes 73, so that The position of is regulated. Further, by loosening the bolt, the hinge portion 71 and the hinge portion 72 are rotatable with respect to each other about the bolt.

  A cylindrical arm portion 74 is formed on the peripheral surface of the hinge portion 72 (in this embodiment, the peripheral surface on the left side in FIG. 1). The arm portion 74 is disposed so that its axis is along the left-right direction, and is attached to the fixed portion 8. An opening is formed in the tip portion of the arm portion 74 (the left end portion in FIG. 1 in this embodiment), and a screw hole 75 is formed in the peripheral surface of the arm portion 74. The screw hole 75 will be described later.

  The hinge part 71, the hinge part 72, the arm part 74, and the fixing part 8 are each formed in a hollow shape, and the electric wire passes through each of them. The electric wire electrically connects a commercial power supply and a power supply unit (described later).

  The fixing portion 8 is attached by being screwed to a mounting bracket or the like attached to the construction surface. The fixing portion 8 is made of, for example, an aluminum die cast product, is formed in a bottomed cylindrical shape, and one end is open. A cylindrical convex portion projecting outward and a peripheral wall 81 that covers the peripheral surface of the convex portion from the outside are formed on the bottom surface of the fixed portion 8. The convex portion and the peripheral wall 81 are each formed in a hollow cylindrical shape coaxial with the fixed portion 8. When the convex portion is inserted inside the arm portion 74, the peripheral surface of the convex portion faces the screw hole 75, and the arm portion 74 is positioned with respect to the fixed portion 8 by screwing a screw into the screw hole 75. Further, by loosening the screw, the arm portion 74 is rotatable with respect to the fixed portion 8 around the convex portion.

  The direction of the case 5 is fixed with respect to the construction surface by fastening the screws passing through the hinge portions 71 and 72 and the screws screwed into the screw holes 75 respectively.

  When the screws passing through the hinge portions 71 and 72 and the screws screwed into the screw holes 75 are loosened, the direction of the case 5 can be changed. Thereby, the direction of the light radiated | emitted from case 5 can be adjusted in the state in which the fixing | fixed part 8 was attached to the construction surface.

  In the present embodiment, the case 5, the support portion 6, and the fixing portion 8 are each formed of an aluminum die cast product, but may be formed of an appropriate material.

  Next, the structure inside the case 5 will be described with reference to FIGS. 3, 4, and 5. In FIG. 5, only the light source unit 2 and the holding member 4 are shown and other members are omitted for easy understanding.

  The case 5 houses the light source unit 2, the light distribution control member 3, and the holding member 4 inside.

  As shown in FIG. 3, a frame 51 and a window hole 52 are formed on the bottom surface (upper surface in the present embodiment) of the case 5. The window hole 52 is formed at a position coaxial with the case 5 and is covered with the panel 501.

  The panel 501 is formed in a disk shape from a light-transmitting material (for example, tempered glass). The entire edge of the panel 501 is covered with the packing 502. The packing 502 is formed in an annular shape with an elastic material (for example, ethylene propylene rubber), and the edge portion of the panel 501 is fitted and held in a groove 508 formed on the inner peripheral surface of the annular shape.

  A flange 503 is formed on the outer peripheral surface of the packing 502. The packing 502 is screwed to the lower surface of the frame 51 by a screw 504 that passes through a hole formed in the flange 503. The packing 502 is sandwiched between the frame 51 and the panel 501 and fills the gap, thereby preventing water and dust from entering the case 5 from the window hole 52.

  Below the window hole 52, the cylindrical light source unit 2 is arranged so as to be coaxial with the window hole 52.

  The light source unit 2 includes a bottomed cylindrical casing 22 having an opening end 24, a bottom plate 25, a lens 26 covering the opening end 24, and an LED (Light Emitting Diode) 21 (light source) housed in the casing 22. And.

  The housing 22 includes a bottomed cylindrical lower housing 221, a bottomed cylindrical tubular outer housing 222, and a cylindrical inner housing 223 opened at both ends.

  As shown in FIG. 4, a disc-shaped bottom plate 25 is disposed on the lower surface of the housing 22 (the bottom surface of the lower housing 221). A prismatic heat radiating portion 251 is integrally formed on the upper surface of the bottom plate 25. The bottom plate 25 is made of, for example, an aluminum die cast product. The heat radiating portion 251 is provided to thermally radiate the heat of the LED 21 by being thermally bonded to the LED module 212 described later.

  A screw hole for fixing a holder 211 to be described later is formed on the upper surface of the heat radiating portion 251.

  The lower casing 221 has a bottom 226 disposed on the lower side so that the opening is directed upward. The lower housing 221 is formed so that the diameter is approximately the same as the diameter of the bottom plate 25. A cover portion 225 that covers the periphery of the heat dissipation portion 251 is formed on the bottom portion 226 of the lower housing 221 so as to protrude upward. The cover part 225 is formed in a rectangular tube shape when viewed from the up-down direction, and the inside of the tube penetrates in the axial direction (up-down direction). A heat radiating portion 251 is disposed inside the cover portion 225. The overhang dimension (height dimension) of the cover part 225 is formed to be approximately the same as the height dimension of the heat radiation part 251 so that the edge part of the cover part 225 and the upper surface of the heat radiation part 251 are flush with each other. Is formed.

  A power supply unit that supplies power for causing the LED 21 to emit light is disposed between the cover 225 and the inner peripheral surface of the lower housing 221. For example, the power supply unit is configured to convert an input AC voltage into a desired DC voltage by a switching power supply or the like and output the converted voltage to the LED 21. In addition, although the circuit element which comprises a power supply unit is mounted on the board | substrate 27 (upper surface and lower surface), illustration of the circuit element of a power supply unit is abbreviate | omitted in this embodiment.

  The substrate 27 is formed in a disc shape, and a hole 271 is formed along the outer periphery of the cover portion 225 in the central portion. The outer peripheral portion of the substrate 27 is formed along the inner surface of the lower housing 221. The substrate 27 is attached in the lower housing 221 so as to be parallel to the bottom 226 in a state where the cover 225 is passed through the hole 271. For example, the position of the substrate 27 is regulated in contact with the protrusion on the inner surface of the lower housing 221 and the protrusion on the outer surface of the cover 225.

  The LED module 212 is disposed inside the lower housing 221 so as to be exposed from the opening. The LED module 212 has a rectangular substrate, and the LED 21 is mounted on the substrate. The LED module 212 is disposed in parallel with the lens 26 (opening end 24), and the LED 21 emits light toward the opening end 24.

  The LED module 212 has an outer peripheral portion held by a resin holder 211. The holder 211 is formed in a rectangular shape whose dimensions in the vertical and horizontal directions are larger than those of the LED module 212, and a hole for exposing the LED 21 is formed in the central portion. The holder 211 holds the LED module 212 with the LED 21 exposed. The holder 211 is formed with a hole through which the screw 213 is passed. By screwing the screw 213 into the screw hole of the heat dissipating part 251, the LED module 212 and the heat dissipating part 251 come into contact and are thermally coupled. Heat generated when the LED 21 is lit is transmitted to the bottom plate 25 through the heat radiating portion 251 and is radiated.

  The inner housing 223 is disposed so as to be coaxial with the lower housing 221. A reflection plate 28 is formed on the inner peripheral surface of the inner casing 223 so as to project obliquely downward (direction toward the LED 21) from the entire circumference of the inner peripheral surface. A window hole 281 is formed in the central portion of the reflecting plate 28 (that is, the portion facing the LED 21). The reflector 28 reflects the light of the LED 21 that has passed through the window hole 281 toward the opening end 24.

  On the lower surface of the reflecting plate 28, there is provided a locking portion 282 that is formed so as to protrude downward (in the direction toward the LED module 212) and hooks on the edge of the holder 211. The position of the reflecting plate 28 is regulated with respect to the LED 21 by the locking portion 282 and the outer peripheral portion of the inner housing 223.

  The outer peripheral portion of the lower open end of the inner casing 223 is in contact with the inner peripheral surface of the annular packing 227. The position of the packing 227 is regulated by being sandwiched between the opening end of the outer casing 222 and the opening end of the lower casing 221. The packing 227 is in contact with the opening end of the outer casing 222, the opening end of the lower casing 221, and the lower opening end of the inner casing 223 to fill the gaps, thereby improving the airtightness of the casing 22. ing. Further, the packing 227 is in contact with the lower opening end of the inner casing 223 and suppresses the positional displacement of the inner casing 223 in the radial direction.

  The outer casing 222 is formed in a cylindrical shape having an opening downward and a lens 26 provided on the upper surface. The lens 26 constitutes a bottom portion of the outer casing 222 formed of a translucent member and is disposed at a position covering the open end 24 of the inner casing 223. The lens 26 is composed of, for example, a Fresnel lens, and is provided to make the radial light from the LED 21 and the reflection plate 28 parallel light. The dimension from the lower end of the outer casing 222 to the lower surface of the lens 26 is formed to be substantially the same as the dimension (height dimension) in the axial direction of the inner casing 223. The outer casing 222 of the present embodiment is a cover that arranges the lens 26 at the opening end 24 of the inner casing 223 and covers the outer periphery of the inner casing 223.

  In addition, although the housing | casing 22 of this embodiment has the said structure, it is not the meaning limited to the light source unit 2 having the housing | casing 22 of the said structure. The light source unit 2 may have any configuration as long as the light source unit 2 includes a light source and a housing having the light source and is configured to emit light from the light source from an opening end provided in the housing.

  As shown in FIG. 5, three grooves 23 along the axial direction are formed on the outer peripheral surface of the outer casing 222. The groove 23 is formed so as to reach the upper surface of the lens 26. One groove 23 is formed in the outermost portion (right side in FIG. 7) of the outer casing 222, and the grooves 23 are formed at different positions 120 degrees around the axis of the outer casing 222. Has been. The shape of the groove 23 is formed so as to be cylindrical when viewed in the vertical direction. The shape of the groove 23 is not limited to a cylindrical shape, and may be an appropriate shape such as a rectangular shape or a polygonal shape. Further, the number of the grooves 23 is not limited to three, and an arbitrary number may be formed. Furthermore, the position of the groove 23 may be an appropriate position as long as it is formed on the outer peripheral surface of the light source unit 2.

  Each of the outer casing 222 and the lower casing 221 has a hole into which the screw 29 is inserted along the axial direction. The hole is formed so as to be coaxial with the outer casing 222 and the lower casing 221, and penetrates the outer casing 222 and the lower casing 221. The screw 29 is inserted from the outer housing 222 toward the bottom plate 25 and screwed into the screw hole of the bottom plate 25. The screw 29 is fixed with the screw head and the bottom plate 25 sandwiching the peripheral wall of the outer casing 222 and the peripheral wall of the lower casing 221. In the present embodiment, three screws 29 are screwed into the screw holes of the bottom plate 25.

  A step portion slightly deeper than the height of the screw head of the screw 29 is formed in the opening portion of the screw hole formed on the upper surface of the lens 26, and the screw head of the screw 29 extends from the upper surface of the lens 26. It does not overhang. The light source unit 2 of the present embodiment has three screws 29. However, if the light source unit 2 has appropriate means for fixing the outer casing 222, the lower casing 221 and the bottom plate 25, The screw 29 may not be provided.

  A groove 224 is formed in a portion corresponding to the groove 23 in the lower housing 221. The groove 224 is formed along the axial direction so as to form a straight line with the groove 23. A hole 252 is formed in a portion corresponding to the groove 224 in the bottom plate 25, and a screw passed through the hole 252 from the groove 224 side is screwed into the support portion 6 and the light source unit 2 is attached to the support portion 6. In the present embodiment, three holes 252 are formed. In addition, when the light source unit 2 can be attached to the support portion 6 by an appropriate method, the groove 224 and the hole 252 can be omitted.

  The casing 22 is not limited to the configuration having the outer casing 222, the inner casing 223, and the lower casing 221. The casing 22 is formed in a bottomed cylindrical shape so as to emit light from the light source from the opening end. What is necessary is just to be comprised and the groove | channel 23 should just be formed in the outer surface.

  The case 5 and the light source unit 2 are each screwed to the support portion 6 as shown in FIG. The support portion 6 is formed with a column 61 projecting upward. The cylinder 61 has a screw hole formed in the shaft, and a screw passing through the bottom plate 25 is screwed in. The screw passed through the hole 252 of the bottom plate 25 is screwed into the screw hole of the column 61, and the light source unit 2 is attached to the support portion 6. In addition, the case 5 is attached to the support portion 6 by screwing a screw passed from below the support portion 6 into a screw hole 507 (see FIG. 7) of the case 5. In addition, the support part 6 should just be comprised so that the case 5 and the light source unit 2 can be fixed, and the cylinder 61 and the groove | channel 505 may be abbreviate | omitted.

  A disk-shaped light distribution control member 3 and a holding member 4 are disposed on the opening end 24 side of the light source unit 2 (in this embodiment, the upper surface side of the lens 26). The light distribution control member 3 is configured, for example, so as to make the emission angle of the emitted light larger than the incident angle of the incident light, and is used for diffusing the light of the LED 21 to illuminate a wider range. The light distribution control member 3 is not limited to widening the light irradiation range, and is a member that performs appropriate light distribution control such as narrowing the light irradiation range or changing the color or polarization direction of light. Good.

  As shown in FIG. 5, the holding member 4 is made of an elastic member (silicon rubber in the present embodiment) and is formed in a cylindrical shape having both ends opened. A groove 402 is formed on the entire inner peripheral surface of the holding member 4, and the light distribution control member 3 is held by the holding member 4 by fitting the edge portion of the light distribution control member 3 into the groove 402. .

  The holding member 4 is formed with a flange portion 42 protruding in the radial direction and a rib 41 protruding in the axial direction from the lower surface.

  The rib 41 is provided on the surface of the holding member 4 that faces the opening end 24 (the surface that contacts the lens 26 in this embodiment). The rib 41 is formed at a portion corresponding to the groove 23 on the outer peripheral surface of the outer casing 222. The rib 41 is formed in a columnar shape having a diameter slightly larger than the diameter of the groove 23 when viewed from the vertical direction. Therefore, the rib 41 is elastically deformed when inserted into the groove 23 and fits into the groove 23 in a state where the peripheral wall of the groove 23 is pressed. When the rib 41 fits into the groove 23, the holding member 4 is positioned with respect to the light source unit 2, and the light distribution control member 3 is held at a position facing the opening end 24. The light incident on the light distribution control member 3 is radiated to the outside through the window hole 401.

  The collar portion 42 projects in a radial direction from a lower portion of the outer peripheral surface so as to be flush with a surface in contact with the opening end of the outer casing 222. In addition, the collar part 42 of this embodiment protrudes from the outer peripheral surface of the left-right direction among the outer peripheral surfaces of the holding member 4, and does not protrude from the outer peripheral surface of the front-back direction (refer FIG. 7), but is limited to this structure. For example, you may overhang from the perimeter of the outer peripheral surface of the holding member 4. FIG.

  A restricting portion 53 formed on the inner peripheral surface of the case 5 is in contact with a surface opposite to a surface in contact with the opening end of the outer casing 222 in the flange portion 42 (in this embodiment, the upper surface of the flange portion 42). The restricting portion 53 is formed in a prismatic shape protruding from the inner peripheral surface of the case 5. The restricting portion 53 restricts the movement of the holding member 4 in the axial direction so that the holding member 4 is not separated from the outer casing 222.

  Here, a configuration in which the holding member 4 arranges and holds the light distribution control member 3 on the upper surface of the lens 26 (that is, a position covering the opening end 24) will be described with reference to FIGS.

  As shown in FIG. 6, when the holding member 4 is disposed on the upper surface of the lens 26 with the rib 41 fitted in the groove 23, the light distribution control member 3 covers the upper surface of the lens 26. Since the three ribs 41 are respectively fitted in the grooves 23, the holding member 4 is displaced with respect to the direction in which the light distribution control member 3 is orthogonal to the axial direction of the outer casing 222 (front and rear, left and right directions in the present embodiment). That is restrained. In the present embodiment, the number of ribs 41 is three, but an arbitrary number of ribs 41 and grooves 23 may be provided as long as the same number is provided.

  When the case 5 is attached to the support portion 6 with the rib 41 fitted in the groove 23, the restricting portion is formed on the upper surface of the flange portion 42 (that is, the surface opposite to the surface in contact with the outer casing 222 in the flange portion 42). 53 touches. Therefore, movement of the holding member 4 in the direction along the groove 23 (the axial direction of the outer casing 222) is restricted, and the rib 41 is difficult to be removed from the groove 23.

  As shown in FIG. 7, four restricting portions 53 are formed on the inner surface of the case 5 in the present embodiment. Two restricting portions 53 are formed on the inner peripheral surface on the right side of the case 5 (the right side in FIG. 7), and are arranged in the front-rear direction (vertical direction in FIG. 7) of the rib 41 disposed on the rightmost side. Yes. The other two restricting portions 53 are formed at positions symmetrical to the center of the case 5.

  The restricting portion 53 is formed so as to be in contact with a portion near the outer periphery on the upper surface of the flange portion 42. By restricting the position of the restricting portion 53 from the lens 26 (opening end 24), the restricting portion 53 is less likely to block the light of the LED 21.

  Since the restricting portion 53 is in contact with the flange portion 42 and the movement of the holding member 4 in the axial direction is restricted in a state where the three ribs 41 are fitted in the grooves 23, the holding member 4 is attached to the outer casing 222. On the other hand, it becomes difficult to shift the position. Therefore, the light distribution control member 3 held by the holding member 4 is held on the upper surface of the lens 26 (that is, the position covering the open end 24 of the housing 22).

  Here, the replacement procedure of the light distribution control member 3 will be described with reference to FIG.

  The light distribution control member 3 is disposed between the upper surface of the light source unit 2 and the restricting portion 53 of the case 5 while being held by the holding member 4.

  When the case 5 is removed from the support portion 6, the light source unit 2 protrudes upward from the support portion 6, and the holding member 4 and the light distribution control member 3 are exposed from the upper surface of the light source unit 2. The operator moves the holding member 4 upward, removes the three ribs 41 from the grooves 23, and removes the light distribution control member 3 from the light source unit 2. An operator places another light distribution control member 3 attached in advance to another holding member 4 on the upper surface of the light source unit 2. Another light distribution control member 3 is, for example, a replacement part having the same light distribution characteristic as the original light distribution control member 3 or a light distribution control member having a different light distribution characteristic. The operator aligns the three ribs 41 with the respective grooves 23 and pushes the ribs 41 downward, so that the ribs 41 are elastically deformed and fit into the grooves 23. Since the rib 41 is elastically deformed while being fitted in the groove 23, the peripheral surface of the rib 41 is pressed against the peripheral surface of the groove 23, and the holding member 4 is not easily separated from the upper surface of the light source unit 2 due to frictional force. . Therefore, it becomes easy for an operator to temporarily hold the light distribution control member 3 on the upper surface of the light source unit 2, and the light distribution control member 3 can be easily replaced.

  In addition, when replacing the light distribution control member 3, the holding member 4 and the light distribution control member 3 may be replaced with a new set by considering the holding member 4 and the light distribution control member 3 as one set, or the light distribution control member 3 is detached from the holding member 4. The new light distribution control member 3 may be attached to the original holding member 4 and attached to the light source unit.

  When the case 5 is attached to the support portion 6 in a state where the replaced light distribution control member 3 and the holding member 4 are attached to the upper surface of the light source unit 2, the restricting portion 53 comes into contact with the upper surface of the flange portion 42. When the case 5 is attached to the support portion 6 and the screw through the hole of the support portion 6 is screwed into the screw hole 507 (see FIG. 7) of the case 5, the case 5 and the support portion 6 are fixed. At this time, the restricting portion 53 of the case 5 contacts the flange portion 42 of the holding member 4 and presses the holding member 4 against the edge portion on the upper surface of the outer casing 222. Since the holding member 4 is formed of silicon rubber in the present embodiment, the light distribution control member 3 is held in a state of being elastically deformed by being sandwiched between the restricting portion 53 and the outer casing 222. Therefore, the airtightness between the holding member 4 and the light source unit 2 is enhanced, and it is possible to prevent water and dust from entering the light source unit 2.

  As described above, the lighting fixture 1 of the present embodiment has the light source unit 2, the light distribution control member 3, the holding member 4, the case 5 (device case), and the support that supports the light source unit 2 and the case 5. Part 6. The light source unit 2 is formed in a bottomed cylindrical shape with an LED 21 (light source) and one end (open end 24 in the present embodiment) open. The light source unit 2 houses the LED 21 inside and takes out the light of the LED 21 from the one end. Have The light distribution control member 3 controls the light distribution of the LED 21. The holding member 4 arranges and holds the light distribution control member 3 at the opening end 24 of the housing 22 (inner housing 223). The case 5 is formed in a bottomed cylindrical shape with one end opened, and a window hole 52 for taking out the light of the LED 21 is formed in the frame 51 (bottom surface). The light source unit 2, the light distribution control member 3, and the holding member 4. Is stored inside. The support unit 6 supports the light source unit 2 and the case 5. A groove 23 ((groove 23 reaching the upper surface of the lens 26 in this embodiment) reaching the opening end 24 along the axial direction is formed on the outer surface of the housing 22. The housing 22 in the holding member 4 and A rib 41 that fits into the groove 23 is formed in a portion corresponding to the groove 23 in the contacting portion, and the housing 22 of the holding member 4 and the inner surface of the case 5 (inner circumferential surface in the present embodiment). A regulating portion 53 that regulates the movement of the holding member 4 in contact with the opposite side of the contacting portion is formed.

  When the operator removes the case 5 from the support portion 6 to expose the light source unit 2, the light distribution control member 3 and the holding member 4 are exposed, so that the light distribution control member 3 can be easily replaced. Further, by fitting the rib 41 into the groove 23, the light distribution control member 3 is positioned on the light source unit 2 in a state of covering the opening end 24, and the light distribution control member 3 can be temporarily held on the light source unit 2. It is easy to replace the control member 3. Furthermore, since the holding member 4 is sandwiched between the restricting portion 53 and the light source unit 2 and the position thereof is restricted, a member (for example, a screw) for restricting the position of the holding member 4 is not necessary, and is necessary for the lighting fixture 1. It is also preferable that the number of parts can be reduced.

  In the luminaire 1 of the present embodiment, the holding member 4 is also preferably formed of an elastic material (silicon rubber in the present embodiment) that is elastically deformed while being sandwiched between the light source unit 2 and the restricting portion 53. It is also preferable that the rib 41 is formed of an elastic material (silicon rubber in the present embodiment) that is elastically deformed while being fitted in the groove 23. Since the holding member 4 is elastically deformed while being sandwiched between the light source unit 2 and the restricting portion 53, the holding member 4 is in contact with the light source unit 2 and the restricting portion 53 and holds the light distribution control member 3 in a stable state. it can. Further, when the light distribution control member 3 is replaced, if the holding member 4 is disposed on the upper surface of the light source unit 2 and the rib 41 is pushed into the groove 23, the rib 41 is elastically deformed and fits into the groove 23, so that it is difficult to remove. Since the holding member 4 is stably and temporarily held on the upper surface of the light source unit 2, the light distribution control member 3 can be easily replaced.

  A plurality of ribs 41 and grooves 23 are preferably formed. By fitting the plurality of ribs 41 in the corresponding grooves 23, the holding member 4 and the light distribution control member 3 are less likely to be displaced in the radial direction and the circumferential direction of the housing 22.

  It is also preferable that the holding member 4 is formed with a flange 42 that protrudes in a direction orthogonal to the axial direction of the light source unit 2 (in the present embodiment, the radial direction of the light source unit 2) and comes into contact with the restriction portion 53. By forming the flange portion 42 on the holding member 4, it is possible to increase the area in contact with the restricting portion 53, so that it is easy to suppress the displacement of the holding member 4.

  It is also preferable that the restricting portion 53 is formed in a rib shape that protrudes from the inner side surface (in this embodiment, the inner peripheral surface) of the case 5 (instrument case). Since the restricting portion 53 can be formed when the case 5 is formed, the case 5 having the restricting portion 53 can be formed efficiently.

  Here, as a modification of the present embodiment, a case 5 in which a tapered portion 531 is formed in the restricting portion 53 will be described with reference to FIG.

  A tapered portion 531 is formed on a surface orthogonal to the radial direction of the case 5 in the restricting portion 53 of the modification.

  The taper portion 531 is formed by reducing the protruding dimension in the radial direction from the inner peripheral surface of the case 5 in the restricting portion 53 as the distance from the light source unit 2 increases. By forming the tapered portion 531 in the restricting portion 53, the light from the LED 21 and the reflecting plate 28 toward the window hole 52 is not easily blocked by the restricting portion 53, and the light extraction efficiency can be increased. Further, in order to further increase the light extraction efficiency, a window hole 52 having a larger diameter by reducing the size of a portion of the frame 51 that protrudes inward from the tapered portion 531 may be formed.

  As described above, in the lighting fixture 1 of the present embodiment, the restricting portion 53 has the taper portion 531 whose protruding dimension in the direction orthogonal to the axis of the case 5 (device case) decreases as the distance from the light source unit increases. Is preferred. The direction orthogonal to the axis of the case 5 is the radial direction of the case 5 in the present embodiment. By forming the tapered portion 531 in the restricting portion 53, the light from the LED 21 and the reflecting plate 28 toward the window hole 52 is not easily blocked by the restricting portion 53, and the light extraction efficiency can be increased.

  The tapered portion may be formed on a surface of the restricting portion 53 that is orthogonal to the inner peripheral surface of the case 5. For example, as shown in FIG. 8, a taper portion is also provided on a surface (side portion 532) of the restricting portion 53 that is orthogonal to the inner peripheral surface of the case 5 and parallel to the axis of the case 5. The height dimension (the width dimension in the circumferential direction) may decrease as the distance from the light source unit 2 increases. That is, at least one of the thickness dimension (width dimension along the circumferential direction of the case 5) and the height dimension (width dimension along the radial direction of the case 5) of the restricting portion 53 decreases as the distance from the light source unit 2 increases. The taper part should just be comprised like this.

  Moreover, although the regulation part 53 of this embodiment is formed in the prismatic shape protruding from the internal peripheral surface of case 5, it is not limited to a prismatic shape, A columnar shape or a polygonal columnar shape may be sufficient. Further, the restricting portion 53 is not limited to projecting from the inner peripheral surface of the case 5, and may project from the lower surface of the frame 51.

  Further, the restricting portion 53 may be formed so as to project in an annular shape from the entire circumference of the inner peripheral surface of the case 5 toward the axis of the case 5. When the restricting portion 53 is formed in an annular shape, an area where the restricting portion 53 contacts the flange portion 42 is increased. Therefore, the force for pressing the holding member 4 against the light source unit 2 is increased, and the positional deviation between the holding member 4 and the light source unit 2 is increased. It becomes difficult to get up. Further, since it is difficult to form a gap between the holding member 4 and the light source unit 2, it becomes difficult for water, dust, and the like to enter the light source unit 2. In addition to being formed on the inner peripheral surface of the case 5, the annular restricting portion 53 may be formed, for example, so as to protrude from the lower surface of the frame 51 (bottom surface) toward the light source unit 2.

  Furthermore, you may provide the taper part mentioned above in the control part 53 formed in cyclic | annular form. For example, a taper portion in which the radially inward projecting dimension of the annular restricting portion 53 is reduced as the distance from the light source unit 2 is formed, and the diameter of the opening portion of the annular restricting portion 53 is separated from the light source unit 2 is formed. If it enlarges, it will become difficult for the control part 53 to block the light of LED21.

  As described above, in the lighting fixture 1 of the present embodiment, the restricting portion 53 is formed in an annular shape that protrudes from the entire circumference of the inner surface (inner circumferential surface in the present embodiment) of the case 5 (device case). Also good. Since the annular regulating portion 53 has a larger area in contact with the flange portion 42 than the rib-like regulating portion 53, the force for pressing the holding member 4 against the light source unit 2 can be increased, and the positional deviation of the holding member 4 can be reduced. It becomes easy to suppress.

  In addition, although the regulation part 53 and the rib 41 of this embodiment are each arrange | positioned in the position shown in FIG. 7, it is not the meaning limited to this arrangement | positioning. For example, the restricting portion 53 may be provided at a position coaxial with the rib 41 (that is, directly above the rib 41). Further, in the case of the holding member 4 in which the collar portion 42 is not formed, the restricting portion 53 is in contact with a portion that covers the upper surface of the light distribution control member 3 and restricts the positions of the holding member 4 and the light distribution control member 3. Good.

  The opening end 24 of the housing 22 of the present embodiment is covered with a lens 26, but the lens 26 may be omitted. In that case, for example, the housing 22 is formed in a bottomed cylindrical shape so as to emit light from the light source from the opening end, and a groove reaching the opening end is formed on the outer peripheral surface of the housing 22. That's fine.

  Although the light distribution control member 3 of the present embodiment is formed in a disk shape, the shape of the light distribution control member 3 is not limited to the disk shape, and may be an appropriate shape held by the holding member 4, for example, It may be a rectangular plate shape or a shape other than a flat plate shape (for example, a spherical lens).

  In addition, the shapes of the case 5, the support portion 6, and the housing 22 are not limited to a cylindrical shape, and may be a cylindrical shape having a polygonal cross-sectional shape such as a rectangular tube shape.

  The LED module 212 of the present embodiment is arranged so as to be parallel to the lens 26 (opening end 24). However, the LED module 212 is not limited to this arrangement, and the LED module 212 emits light toward the opening end 24. It only has to be arranged so that it can.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Light source unit 21 LED (light source)
22 Housing 23 Groove 24 Open End 3 Light Distribution Control Member 4 Holding Member 41 Rib 42 Gutter 5 Case (Appliance Case)
51 frame (bottom)
52 Window hole 53 Restriction part 531 Taper part 6 Support part

Claims (7)

A light source unit having a light source and a housing that is formed in a bottomed cylindrical shape with one end open and that houses the light source and extracts light from the light source from the one end;
A light distribution control member for controlling the light distribution of the light source;
A holding member that arranges and holds the light distribution control member at an opening end of the housing;
An instrument case which is formed in a bottomed cylindrical shape with one end open, a window hole for taking out light from the light source is formed on the bottom surface, and the light source unit, the light distribution control member, and the holding member are housed therein; ,
A support part for supporting the light source unit and the instrument case,
A groove reaching the opening end along the axial direction is formed on the outer surface of the housing,
A rib that fits into the groove is formed in a portion corresponding to the groove in a portion of the holding member that contacts the housing.
On the inner side surface of the fixture case, there is formed a restricting portion that is in contact with the opposite side of the holding member in contact with the housing and restricts the movement of the holding member. The holding member is formed of an elastic material that is elastically deformed in a state of being sandwiched between the light source unit and the restricting portion,
The lighting apparatus according to claim 1, wherein the rib is formed of an elastic material that is elastically deformed in a state of being fitted in the groove.   The lighting apparatus according to claim 1, wherein a plurality of the ribs and the grooves are formed. The lighting device according to any one of claims 1 to 3, wherein the restricting portion has a taper portion whose protruding dimension in a direction orthogonal to the axis of the device case decreases as the distance from the light source unit increases. . The flange part which protrudes in the direction orthogonal to the axial direction of the said housing | casing and contacts the said control part is formed in the said holding member. The Claim 1 characterized by the above-mentioned. lighting equipment.   The lighting device according to claim 1, wherein the restricting portion is formed in a rib shape protruding from an inner surface of the device case.   The lighting device according to any one of claims 1 to 5, wherein the restricting portion is formed in an annular shape protruding from the entire circumference of the inner surface of the device case.

Images