JP2017050188A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire which enables simplification of attachment/detachment work of an optical member for light distribution adjustment.SOLUTION: A luminaire includes: a light source 30; a luminaire body 10 in which the light source 30 is disposed, the luminaire body 10 including a cylindrical shade part 11 enclosing an optical axis J of the light source 30; a cylindrical member 60 disposed on an inner surface of the shade part 11; and a spread filter 70 which is held by the cylindrical member 60 and has a substantially flat plate shape. The spread filter 70 has a first engaged part 710 which is engaged with the cylindrical member 60. The cylindrical member 60 has a first engaging part 612 which engages with the first engaged part 710. The spread filter 70 is elastically deformed to be attached to or detached from the cylindrical member 60.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a lighting fixture including an optical member for adjusting light distribution.

  2. Description of the Related Art Conventionally, as a lighting fixture, for example, a ceiling-embedded lighting fixture that is embedded in a mounted portion such as a ceiling and emits light downward is known. In a lighting device such as a downlight, a spread lens may be used as an optical member for adjusting light distribution in order to distribute light in an elliptical shape (for example, Patent Document 1). A spread lens is an optical member having anisotropy, and in a predetermined direction, light is refracted more than in a direction perpendicular to the direction, thereby converting light having a circular cross-sectional shape into an elliptical cross-sectional shape. Convert to light.

JP 2014-110119 A

  In the lighting fixture disclosed in Patent Document 1, it is necessary to adjust the mounting direction of the spread lens in order to irradiate elliptical light having a long axis in a desired direction by the spread lens. However, in the lighting fixture disclosed in Patent Document 1, in order to adjust the mounting direction of the spread lens, a complicated operation such as removing a holding frame and a screw for holding the spread lens is required.

  Therefore, the present invention provides a lighting fixture that can simplify the work of attaching and detaching the optical member for adjusting the light distribution.

  In order to solve the above-described problems, an aspect of a lighting fixture according to the present invention includes a light source, a fixture main body provided with a cylindrical shade portion in which the light source is disposed and surrounding an optical axis of the light source, and the shade. A cylindrical member disposed on the inner surface of the part, and a substantially flat spread filter held by the cylindrical member, wherein the spread filter is locked to the cylindrical member. The cylindrical member includes a first locking portion that locks the first locked portion, and the spread filter can be attached to and detached from the cylindrical member by being elastically deformed.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which can simplify the attachment or detachment operation | work of the optical member for light distribution adjustment can be provided.

FIG. 1 is a perspective view showing an appearance of the lighting apparatus according to Embodiment 1. FIG. 2 is an exploded perspective view of the lighting apparatus according to Embodiment 1. FIG. FIG. 3 is a cross-sectional view of the lighting fixture according to the first embodiment. 4 is an enlarged view of a main part of a cross section of the lighting apparatus according to Embodiment 1. FIG. FIG. 5 is a plan view showing the configuration of the spread filter according to the first embodiment. FIG. 6 is an enlarged view of a main part of a cross section of the lighting apparatus according to Embodiment 1. FIG. 7 is a partially cutaway perspective view showing a method for attaching a spread filter in the lighting apparatus according to Embodiment 1. FIG. FIG. 8 is a partially cutaway perspective view of the lighting apparatus according to Embodiment 2. FIG. FIG. 9 is a perspective view showing a configuration of a tubular member and a spread filter of the lighting apparatus according to Embodiment 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangement positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

(Embodiment 1)
[1-1. overall structure]
First, the whole structure of the lighting fixture which concerns on embodiment is demonstrated using FIGS.

  FIG. 1 is a perspective view showing an appearance of a lighting fixture 1 according to the present embodiment.

  FIG. 2 is an exploded perspective view of the lighting fixture 1 according to the present embodiment.

  FIG. 3 is a cross-sectional view of the lighting fixture 1 according to the present embodiment.

  FIG. 4 is an enlarged view of a main part of a cross section of the lighting fixture 1 according to the present embodiment. 4 is an enlarged view of a region surrounded by the broken line and the optical axis J in the cross-sectional view shown in FIG.

  In each figure, a direction parallel to the optical axis J is a y-axis direction, and two directions perpendicular to the optical axis J and perpendicular to each other are a z-axis direction and an x-axis direction. In the present embodiment, the y-axis direction is the vertical direction.

  The lighting fixture 1 shown in FIGS. 1 to 3 is an embedded lighting fixture such as a downlight that illuminates light downward (floor, wall, etc.) by being embedded in a mounted portion such as a ceiling of a building, for example. is there. In the present embodiment, the luminaire 1 has a direction in which light is emitted from the luminaire 1 (light emission direction) as the front, and a direction opposite to the light emission direction as the rear. That is, when the ceiling surface on which the luminaire 1 is installed is used as a reference, the floor side direction (downward) from the ceiling surface is the front side, and the upper side direction (upward) from the ceiling surface is the rear side. Moreover, the y-axis direction negative side is the front, and the y-axis direction positive side is the rear.

  As shown in FIGS. 2 and 3, the lighting fixture 1 includes a fixture body 10, a frame body 20, a light source 30, a mounting member 32, a connecting member 36, a reflecting member 40, an optical member 50, a cylindrical member 60, and a spread filter. 70. Hereinafter, each component of the lighting fixture 1 is demonstrated.

[1-1-1. Instrument body]
The instrument body 10 is a member in which the light source 30 is disposed. In the present embodiment, the instrument body 10 is a mounting base to which the light source 30 is attached. The instrument body 10 also functions as a heat sink that dissipates heat generated by the light source 30. Therefore, the instrument main body 10 is good to be comprised with material with high heat conductivity, such as a metal material. The instrument body 10 is made of, for example, aluminum die casting made of aluminum. As shown in FIG. 3, the instrument body 10 includes a shade part 11, an attachment part 12, and a heat dissipation part 13.

  The attachment portion 12 is a trapezoidal portion to which the light source 30 is attached. As shown in FIG. 3, the light source 30 is disposed on the front side of the attachment portion 12, and the heat dissipation portion 13 is disposed on the rear side of the attachment portion 12. Thereby, the heat generated by the light source 30 is efficiently transmitted to the heat radiating unit 13.

  The shade portion 11 is a cylindrical portion that is provided on the periphery of the attachment portion 12 and surrounds the optical axis J of the light source 30. The light emitted from the luminaire 1 is emitted from the front end portion of the shade portion 11. As shown in FIG. 4, a second locking portion 114 that locks the tubular member 60 is provided on the inner surface of the shade portion 11. In the present embodiment, the second locking portion 114 is an annular groove formed on the inner surface of the shade portion 11.

  The heat dissipating part 13 is a part that dissipates heat generated by the light source 30 and includes a plurality of fins. The heat radiating portion 13 is formed on the rear side of the mounting portion 12.

[1-1-2. Frame]
The frame body 20 is a member for attaching the instrument main body 10 to an attached portion such as a ceiling. In the present embodiment, the frame body 20 is a substantially cylindrical member that surrounds the shade portion 11 of the instrument body 10. Moreover, in this Embodiment, it is comprised so that the emission direction of the emitted light from the instrument main body 10 can be changed by changing the relative angle of the instrument main body 10 with respect to the fixed frame 20. FIG. That is, the luminaire 1 according to the present embodiment is a universal downlight.

  The frame body 20 can be formed of, for example, a metal material such as aluminum.

[1-1-3. light source]
The light source 30 is a light emitting module, and is a light source that emits predetermined light radially. In the present embodiment, the light source 30 is a light emitting module having an LED. The light source 30 is configured to emit white light, for example. The light source 30 is configured by a COB (Chip On Board) type LED, and as shown in FIG. 2, a base 302, a plurality of LEDs 304 which are bare chips (LED chips) mounted on the base 302, and these The LED 304 is sealed, and a sealing member including a phosphor is provided. In this embodiment, the sealing member collectively seals all the LEDs 304, but the configuration of the sealing member is not limited to this. It is good also as a structure which forms a sealing member in the shape of a plurality of lines along the sequence direction of LED304 arranged in the shape of a line.

  The light source 30 is attached to the attachment portion 12 of the instrument body 10. In the luminaire 1, the direction of the optical axis J of the light source 30 is the vertical direction (the y-axis direction in each figure).

  The base 302 is a mounting substrate for mounting a plurality of LEDs 304, and is, for example, a ceramic substrate, a resin substrate, an insulating-coated metal base substrate, or the like. In addition, the base 302 is, for example, a plate having a flat surface that is rectangular in plan view, and the bottom surface (rear surface) of the base 302 is attached to the attachment portion 12 of the instrument body 10. The base 302 is formed with a pair of electrode terminals (a positive electrode terminal and a negative electrode terminal) for receiving DC power for causing the LED 304 (light source 30) to emit light from the outside.

[1-1-4. Mounting member]
The attachment member 32 is a member for attaching the light source 30 to the attachment portion 12 of the instrument body 10. As shown in FIG. 2, the attachment member 32 includes a restriction portion 322 and a claw-like portion 324.

  The restricting unit 322 restricts the position of the light source 30 in the direction perpendicular to the optical axis J (x-axis direction and y-axis direction). The restricting portion 322 has a rectangular frame shape having an opening at the center. The opening formed at the center of the restricting portion 322 has a shape corresponding to the light source 30, and the light source 30 is disposed in the opening. The mounting member 32 is disposed on the surface (front side) of the mounting portion 12 where the light source 30 is disposed, and is fixed to the mounting portion 12 by the connecting member 36 and the screw 38 shown in FIG. More specifically, a through hole 326 is formed in the restricting portion 322 of the mounting member 32, and the screw 38 is screwed into a screw hole formed in the mounting portion 12 through the through hole 326. The attachment member 32 is fixed to the attachment portion 12. As a result, the mounting member 32 and the light source 30 disposed in the opening thereof are fixed to the mounting portion 12.

  The claw-shaped portion 324 is a claw-shaped portion for supporting the reflecting member 40, and locks the locking hole portion 440 of the reflecting member 40 as shown in FIG. In the present embodiment, the attachment member 32 includes two claw-shaped portions 324. The claw-like portion 324 has a substantially L-shaped shape, and an inclined surface (protrusion) that protrudes away from the optical axis J at the end of the claw-like portion 324 is inserted into the locking hole portion 440. As a result, the claw-shaped portion 324 locks the locking hole 440.

  The attachment member 32 can be formed using resin materials, such as polybutylene terephthalate (PBT) and a polycarbonate, for example.

[1-1-5. Connection member]
The connection member 36 is a member to which a wiring (not shown) that supplies current to the light source 30 is connected. As shown in FIG. 2, the lighting fixture 1 according to the present embodiment includes two connection members 36, one connection member 36 having a high potential side wiring, and the other connection member 36 having a low potential side. Each wiring is connected. The connection member 36 is provided with electrodes (not shown) that supply current to the light source 30. The electrode is connected to an electrode terminal formed on the light source 30.

  The connection member 36 also has a function of regulating the position of the light source 30. A through hole through which the screw 38 passes is formed in the connection member 36, and the connection member 36 is fixed to the attachment portion 12 and the attachment member 32 by the screw 38 inserted into the through hole. At that time, as shown in FIG. 3, the end of the connection member 36 on the optical axis J side presses the light source 30 toward the mounting portion 12, whereby the position of the light source 30 in the optical axis J direction (y-axis direction). To regulate.

  The housing of the connection member 36 can be formed using a resin material such as PBT or polycarbonate, for example. The electrode of the connection member 36 can be formed using a conductive member such as copper.

[1-1-6. Reflective member]
The reflection member 40 is a member that controls light distribution from the light source 30. In the present embodiment, the reflecting member 40 reflects the light from the light source 30 toward the optical member 50. As shown in FIG. 2, the reflecting member 40 has a substantially cylindrical shape in which an opening through which the optical axis J passes is formed.

  As shown in FIG. 3, the reflecting member 40 has an inner diameter from the end on the side where the light from the light source 30 is incident (the positive side in the y-axis direction) toward the end where the light is emitted. It has a substantially cylindrical shape configured to gradually increase. The light from the light source 30 is reflected on the inner surface of the reflecting member 40.

  As shown in FIG. 4, a locking hole portion 440 that is locked to the claw-shaped portion 324 of the mounting member 32 is provided on the outer surface side of the reflecting member 40. The locking hole portion 440 is a hole provided in a member erected on the outer surface side of the reflecting member 40. The reflecting member 40 is locked to the attachment member 32 by the locking hole 440 being locked to the claw-shaped portion 324. Thereby, the reflection member 40 is attached to the attachment portion 12 of the instrument body 10 via the attachment member 32.

  As shown in FIG. 2, three claw-like portions 410 are provided at the end of the reflecting member 40 on the light emission side. The claw-like portion 410 is a portion that locks the optical member 50.

  The reflecting member 40 can be formed using a hard white resin material such as PBT, for example. The reflecting member 40 may be provided with a metal film such as aluminum on the inner surface.

[1-1-7. Optical member]
As shown in FIG. 4, the optical member 50 includes a light incident surface 510 on which light from the reflecting member 40 is incident and a light emitting surface 520 from which light incident on the light incident surface 510 is emitted. It is a member. The optical member 50 may have a function of controlling and emitting the light distribution of the light incident from the reflecting member 40. In the present embodiment, the optical member 50 is a Fresnel lens. The optical member 50 condenses the light incident from the light incident surface 510 and emits light having a substantially circular cross section from the light emitting surface 520.

  As shown in FIG. 2, three concave portions 530 are provided in the peripheral portion of the optical member 50. In the present embodiment, the concave portion 530 is a portion having a concave shape provided on the light emitting surface 520 of the optical member 50. When the concave portion 530 of the optical member 50 is locked to the claw-like portion 410 of the reflecting member 40, the optical member 50 is locked to the reflecting member 40. Thereby, the optical member 50 is attached to the attachment portion 12 of the instrument body 10 via the reflection member 40 and the attachment member 32. In addition, by arranging the optical member 50 at the light emitting side end of the reflecting member 40 in this manner, the light emitted from the reflecting member 40 is efficiently incident on the optical member 50.

  The optical member 50 is formed using a translucent material. For example, the optical member 50 can be formed using a transparent resin material such as PMMA (acrylic) or polycarbonate, or a transparent material such as a glass material.

[1-1-8. Cylindrical member]
As shown in FIG. 3, the tubular member 60 is a tubular member disposed on the inner surface of the shade portion 11. The cylindrical member 60 has an incident opening 610 through which light emitted from the optical member 50 enters and an outgoing opening 620 through which light incident on the incident opening 610 exits. The cylindrical member 60 is disposed on the inner surface of the shade portion 11 of the instrument body 10 and on the light emitting surface 520 side of the optical member 50.

  As shown in FIG. 4, the tubular member 60 is disposed in the vicinity of the front end portion of the shade portion 11 so that the emission opening 620 is located. The length of the cylindrical member 60 in the optical axis J direction (y-axis direction) is about the length from the light emitting surface 520 of the optical member 50 to the front side end of the shade portion 11. Thereby, the cylindrical member 60 can cover a part of the inner surface of the shade part 11 from the vicinity of the light emitting surface 520 of the optical member 50 to the vicinity of the front end of the shade part 11. Here, the inner surface (surface on the optical axis J side) of the cylindrical member 60 is a black glare suppressing surface. Thereby, glare in a portion from the vicinity of the light emitting surface 520 of the optical member 50 to the vicinity of the front end of the shade portion 11 in the inner surface of the shade portion 11 is suppressed.

  The inner surface of the cylindrical member 60 is not particularly limited as long as it is a black glare suppressing surface. The black glare-suppressing surface can be realized, for example, by applying a matte treatment to the surface painted black. Further, the black glare-suppressing surface can be realized by applying a texturing process to a surface coated with black or a surface made of a black member. Furthermore, in order to further suppress glare on the inner surface of the cylindrical member 60, a stepped portion (baffle) may be provided on the inner surface of the cylindrical member 60 as shown in FIG.

  As shown in FIG. 4, the tubular member 60 includes a first locking portion 612 that locks the spread filter 70. In the present embodiment, the first locking portion 612 is an annular step portion provided on the inner surface of the cylindrical member 60. That is, the first locking portion 612 is a step portion provided at a position along the periphery of the spread filter 70 on the inner surface of the tubular member 60 when the spread filter 70 is disposed.

  As shown in FIGS. 2 and 4, the cylindrical member 60 includes a second locked portion 660 on the outer surface. The cylindrical member 60 is held inside the instrument body 10 by the second locked portion 660 being locked to the second locking portion 114. In the present embodiment, the second locked portion 660 is a plurality of convex portions, and the second locking portion 114 is an annular groove formed on the inner surface of the shade portion 11. The cylindrical member 60 can be easily attached only by being inserted into the shade portion 11 by having the above-described configuration. The second locked portion 660 contacts the second locking portion 114. Thereby, it can suppress that the cylindrical member 60 rotates with respect to the shade part 11 with the frictional force between the 2nd to-be-latched part 660 and the 2nd latching | locking part 114. FIG. That is, it can suppress that the cylindrical member 60 rotates with respect to the shade part 11 by the vibration at the time of transportation of the lighting fixture 1, etc. For this reason, the light diffusion direction of the spread filter 70 held by the tubular member 60 can be stabilized.

  A configuration in which the second locked portion 660 is pressed against the second locking portion 114, that is, a configuration in which the second locked portion 660 is pressed against the second locking portion 114 may be employed. . Thereby, since the frictional force between the 2nd to-be-latched part 660 and the 2nd latching | locking part 114 increases, it can suppress further that the cylindrical member 60 rotates with respect to the shade part 11. FIG. .

  Further, the frictional force for suppressing the cylindrical member 60 from rotating with respect to the shade portion 11 does not necessarily have to be generated between the second locked portion 660 and the second locking portion 114. Good. That is, it is also possible to employ a configuration in which the cylindrical member 60 is in contact with or pressed against the shade portion 11 at a portion other than the second locked portion 660. For example, a convex portion may be provided on the outer surface of the cylindrical member 60 in addition to the second locked portion 660, and the convex portion may be brought into contact with the inner surface of the shade portion 11.

  Moreover, in this Embodiment, since the 2nd latching | locking part 114 is a cyclic | annular groove | channel, the cylindrical member 60 can also be rotated by applying the force exceeding the said friction force to the cylindrical member 60. FIG. That is, the spread filter 70 can be rotated with respect to the shade part 11 by rotating the cylindrical member 60 with respect to the shade part 11. Since the spread filter 70 can be rotated with respect to the cylindrical member 60, the cylindrical member 60 may be configured not to rotate with respect to the shade portion 11. In this Embodiment, in order to suppress rotation with respect to the shade part 11 of the cylindrical member 60 more, for example, the height direction of the second locked part 660 (from the second locked part 660 to the optical axis J). It is good also as a structure which the 2nd to-be-latched part 660 press-contacts the 2nd latching | locking part 114 by enlarging the dimension in the direction of the perpendicular of (2). That is, the frictional force may be increased by the second locked portion 660 pressing the second locking portion 114.

  The cylindrical member 60 can be formed using resin materials, such as a polycarbonate and PBT, for example.

[1-1-9. Spread filter]
The spread filter 70 is a kind of optical member for adjusting light distribution. In the present embodiment, the spread filter 70 is an anisotropic diffusion sheet, and diffuses light more in a predetermined direction than in a direction perpendicular to the predetermined direction. For example, the spread filter 70 converts light having a circular cross-sectional shape into light having an elliptical cross-sectional shape. Hereinafter, the direction in which light is largely diffused by the spread filter 70 is referred to as a light diffusion direction.

  The spread filter 70 is a substantially flat plate member held by the cylindrical member 60. In addition, it is not limited to a flat plate by description with substantially flat form here. The substantially flat plate shape includes, for example, a shape in which a protrusion or the like is formed on a part of the flat plate in addition to the flat plate.

  Hereinafter, a detailed configuration of the spread filter 70 will be described with reference to FIG. 5 in addition to FIGS.

  FIG. 5 is a plan view showing the configuration of the spread filter 70 according to the present embodiment.

  As shown in FIGS. 2, 4, and 5, the spread filter 70 includes a plurality of first locked portions 710 that are locked to the tubular member 60. In the present embodiment, the first locked portion 710 is a protrusion provided on the periphery of the spread filter 70, and the first locked portion 710 is connected to the first locking portion 612 of the tubular member 60. Locked. The locking configuration by the first locking portion 612 of the first locked portion 710 will be described later.

  Further, as shown in FIG. 5, a cutout portion 720 and a mark portion 730 are formed on the periphery of the spread filter 70. The notch 720 is a notch for avoiding interference with the protrusion when the protrusion is provided on the inner surface of the cylindrical member 60. The mark portion 730 is a portion having a predetermined shape formed on the periphery of the spread filter 70 and indicates the direction in which light is diffused by the spread filter 70. In the present embodiment, the mark portion 730 is a substantially triangular cutout and has a shape different from that of the cutout portion 720. In the present embodiment, two mark portions 730 are formed at opposite positions on the periphery of the spread filter 70, and in the direction connecting the two mark portions 730 (the direction indicated by the dashed line arrow in FIG. 5). Light diffusion is relatively large. That is, the direction connecting the two mark portions 730 is the light diffusion direction. Further, light diffusion is relatively small in a direction perpendicular to the direction. Note that the two mark portions 730 may be arranged so that the direction in which the two mark portions 730 are connected is the direction in which the light diffusion is the smallest.

  The spread filter 70 is made of resin and can be elastically deformed. In other words, the spread filter 70 has flexibility, and even if the force is applied and deformed, the spread filter 70 returns to its original shape when the state is returned to a state where no force is applied. The spread filter 70 can be attached to and detached from the tubular member 60 by being elastically deformed. A method for attaching and detaching the spread filter 70 will be described later.

  The spread filter 70 can be formed, for example, by laminating an acrylic anisotropic diffusion filter on a polyethylene terephthalate (PET) sheet. The spread filter 70 may be formed using other elastically deformable translucent resin.

[1-2. Spread filter locking configuration]
Next, the locking configuration of the spread filter 70 according to the present embodiment using the tubular member 60 will be described in detail with reference to FIG.

  FIG. 6 is an enlarged view of a main part of a cross section of the lighting fixture 1 according to the present embodiment. FIG. 6 is an enlarged view of a region surrounded by a two-dot chain line in the cross-sectional view shown in FIG.

  As shown in FIG. 6, in the present embodiment, the cylindrical member 60 has an annular shape as a first locking portion 612 in the vicinity of the end portion on the optical member 50 side (rear side, that is, the y-axis direction positive side). Are formed. That is, the step is provided over the entire circumferential direction of the tubular member 60.

  Here, the maximum dimension (dimension L shown in FIG. 5) in the direction perpendicular to the optical axis J of the spread filter 70 is larger than the inner diameter of the cylindrical member 60. Furthermore, in the present embodiment, the maximum dimension of the spread filter 70 in the direction perpendicular to the optical axis J is larger than the diameter of the first locking portion 612 that is an annular step. Further, the maximum dimension (dimension D shown in FIG. 5) in the direction perpendicular to the optical axis J of the part of the spread filter 70 excluding the first locked part 710 is smaller than the diameter of the first locking part 612. Therefore, as shown in FIG. 6, the first locked portion 612 is in contact with the first locked portion 710 of the spread filter 70 while being elastically deformed in the direction toward the optical axis J. Thereby, since the some 1st to-be-latched part 710 provided in the periphery of the spread filter 70 is pressed on the 1st latching | locking part 612, the spread filter 70 is each of the some 1st to-be-latched part 710. To about the same force in the optical axis J direction. Therefore, the position of the spread filter 70 in the direction perpendicular to the optical axis J is stabilized.

  Further, as shown in FIG. 6, the spread filter 70 includes the first locked portion 710 sandwiched between the first locking portion 612 and the light emitting surface 520 of the optical member 50, so that the optical axis Variation in position in the J direction (y-axis direction) is restricted.

  Further, as described above, since the first locking portion 612 is an annular stepped portion provided on the inner surface of the cylindrical member 60, the first locked portion 710 of the spread filter 70 has the optical axis J. The direction of rotation about the center is not restricted by the first locking portion 612. Therefore, the spread filter 70 is rotatably held with respect to the cylindrical member 60 and the shade portion 11.

  In addition, the structure of the 1st latching | locking part 612 is not limited to a cyclic | annular level | step difference, For example, a cyclic | annular groove | channel may be sufficient. By making the first locking portion 612 an annular groove, the spread filter 70 can be held only by the cylindrical member 60 without using the optical member 50. Moreover, the 1st latching | locking part 612 may not be cyclic | annular. For example, the first locking portion 612 may include a configuration in which a plurality of arc-shaped steps are arranged in series in the circumferential direction of the tubular member 60. Thereby, the spread filter 70 is held by the cylindrical member 60 in a state of being rotatable by a predetermined angle around the optical axis J.

[1-3. How to attach / detach the spread filter]
Subsequently, a method of attaching / detaching the spread filter 70 according to the present embodiment to / from the cylindrical member 60 will be described with reference to FIG.

  FIG. 7 is a partially cutaway perspective view showing a method of attaching the spread filter 70 in the lighting apparatus 1 according to the present embodiment.

  As shown in FIG. 7, in the lighting apparatus 1, the spread filter 70 is finally attached to the tubular member 60 in a state in which components other than the spread filter 70 are assembled. In FIG. 7, as an example, an example in which the spread filter 70 is attached in a state where a part other than the spread filter 70 of the lighting fixture 1 is attached to a construction material 90 such as a ceiling is shown.

  As described above, the maximum dimension of the spread filter 70 in the direction perpendicular to the optical axis J direction is larger than the inner diameter of the cylindrical member 60. Therefore, in order to insert the spread filter 70 into the cylindrical member 60 in the direction of the arrow in FIG. 7, the spread filter 70 is inserted into the cylindrical member 60 in a state of being elastically deformed so that the maximum dimension is reduced. Is done. Subsequently, at least a portion other than the first locked portion 710 of the spread filter 70 is disposed so that at least one first locked portion 710 is locked to the first locking portion 612. It is returned to its original shape. When the spread filter 70 is returned to the original shape, the position of the spread filter 70 is adjusted so that all the first locked portions 710 are arranged in the first locking portions 612. Thereby, all of the plurality of first locked portions 710 can be arranged in the first locking portion 612. Subsequently, the spread filter 70 is rotated with respect to the optical axis J as necessary so that the light diffusion direction of the spread filter 70 matches the desired direction. Here, the spread filter 70 may be rotated with respect to the tubular member 60. Further, the cylindrical member 60 may be rotated with respect to the shade portion 11 without rotating the spread filter 70 with respect to the cylindrical member 60.

  Moreover, when removing the spread filter 70 from the lighting fixture 1, it inserts a hand etc. in the inside of the cylindrical member 60 from the exterior of the lighting fixture 1, and is elastically deformed by picking the spread filter 70, for example. As a result, the first locked portion 710 is detached from the first locking portion 612. And the spread filter 70 can be taken out from the inside of the cylindrical member 60 in the state elastically deformed so that the maximum dimension of the spread filter 70 may become small.

  As described above, in the lighting fixture 1 according to the present embodiment, when the spread filter 70 is attached / detached, it is not necessary to attach / detach and move other components of the lighting fixture 1 such as screws. That is, the lighting fixture 1 according to the present embodiment can simplify the work of attaching and detaching the spread filter 70.

[1-4. Summary]
As described above, the lighting fixture 1 according to the present embodiment includes the light source 30 and the fixture main body 10 including the cylindrical shade portion 11 in which the light source 30 is disposed and the optical axis of the light source 30 is surrounded. Furthermore, the luminaire 1 includes a tubular member 60 disposed on the inner surface of the shade portion 11 and a substantially flat spread filter 70 held by the tubular member 60. The spread filter 70 includes a first locked portion 710 that is locked to the tubular member 60. The cylindrical member 60 includes a first locking portion 612 that locks the first locked portion 710. The spread filter 70 can be attached to and detached from the tubular member 60 by being elastically deformed.

  Thereby, in the lighting fixture 1 which concerns on this Embodiment, the spread filter 70 can be attached or detached only by moving the spread filter 70 in the elastically deformed state. Thus, in the lighting fixture 1 which concerns on this Embodiment, the attachment or detachment work of the spread filter 70 can be simplified.

  Moreover, in the lighting fixture 1 which concerns on this Embodiment, the cylindrical member 60 is provided with the 2nd to-be-latched part 660 on the outer surface, and the instrument main body 10 has the 2nd to-be-latched part 660 on the inner surface of the shade part 11. FIG. And the second locked portion 660 may abut against the second locking portion 114.

  Thereby, it can suppress that the cylindrical member 60 rotates with respect to the shade part 11 with the frictional force between the 2nd to-be-latched part 660 and the 2nd latching | locking part 114. FIG. That is, it can suppress that the cylindrical member 60 rotates with respect to the shade part 11 by the vibration at the time of transportation of the lighting fixture 1, etc. For this reason, the light diffusion direction of the spread filter 70 can be stabilized.

  Moreover, in the lighting fixture 1 which concerns on this Embodiment, the spread filter 70 may be hold | maintained rotatably with respect to the fixture main body 10. FIG.

  Thereby, the light diffusion direction of the spread filter 70 can be easily adjusted.

  Moreover, in the lighting fixture 1 according to the present embodiment, the first locked portion 710 is a protruding portion provided on the periphery of the spread filter 70, and the first locking portion 612 is the inner surface of the tubular member 60. It may be an annular stepped portion provided on the surface.

  Thereby, the spread filter 70 can be freely rotated with respect to the cylindrical member 60. For this reason, the light diffusion direction of the spread filter 70 can be easily adjusted.

  Moreover, in the lighting fixture 1 which concerns on this Embodiment, the cylindrical member 60 is provided with the some 2nd to-be-latched part 660, and the 2nd to-be-latched part 660 is a convex part, A 2nd latching | locking part 114 may be an annular groove formed on the inner surface of the shade section 11.

  Thereby, the cylindrical member 60 can be rotated with respect to the shade part 11. The spread filter 70 can be rotated with respect to the shade part 11 by rotating the cylindrical member 60 with respect to the shade part 11. That is, the light diffusion direction of the spread filter 70 can be adjusted by rotating the cylindrical member 60 with respect to the shade portion 11.

  Moreover, in the luminaire 1 according to the present embodiment, a Fresnel lens may be provided between the light source 30 and the spread filter 70.

  Thereby, the condensed light having a substantially circular cross section is incident on the spread filter 70 from the optical member 50 which is a Fresnel lens. Therefore, the spread filter 70 can emit light having a substantially elliptical cross-sectional shape.

  Moreover, in the luminaire 1 according to the present embodiment, the spread filter 70 may be made of resin.

  Thereby, the spread filter 70 which can be elastically deformed is realizable.

  In the lighting fixture 1 according to the present embodiment, the maximum dimension of the spread filter 70 in the direction perpendicular to the optical axis J may be larger than the inner diameter of the tubular member 60.

  Thereby, the spread filter 70 can be held by the tubular member 60. Further, although the maximum dimension of the spread filter 70 is larger than the inner diameter of the cylindrical member 60, the spread filter 70 can be easily attached to and detached from the cylindrical member 60 by elastically deforming the spread filter 70.

(Embodiment 2)
Next, the lighting fixture which concerns on Embodiment 2 is demonstrated. The lighting fixture 1 according to the first embodiment has a configuration that can freely adjust the light diffusion direction of the spread filter 70, whereas the lighting fixture according to the present embodiment can fix the light diffusion direction of the spread filter. It has a configuration. Hereinafter, the lighting fixture according to the present embodiment will be described focusing on differences from the lighting fixture 1 according to the first embodiment.

[2-1. overall structure]
First, the whole structure of the lighting fixture which concerns on this Embodiment is demonstrated using FIG.8 and FIG.9.

  FIG. 8 is a partially cutaway perspective view of the luminaire 1a according to the present embodiment. In FIG. 8, in order to demonstrate the structure of the shade part 11a of the fixture main body 10a with which the lighting fixture 1a is equipped, the figure of the state in which the cylindrical member and the spread filter are not attached is shown.

  FIG. 9 is a perspective view showing configurations of the tubular member 60a and the spread filter 70a of the lighting fixture 1a according to the present embodiment.

  The lighting fixture 1a which concerns on this Embodiment is the lighting fixture 1 similarly to the lighting fixture 1, the fixture main body 10a, the frame 20, the light source 30, the attachment member 32, the connection member 36, the reflection member 40, the optical member 50, the cylindrical member 60a, and A spread filter 70a is provided. The lighting fixture 1a according to the present embodiment is different from the lighting fixture 1 according to the first embodiment in the configuration of the fixture main body 10a, the cylindrical member 60a, and the spread filter 70a, and is identical in other configurations. Hereinafter, the structure of the fixture main body 10a, the cylindrical member 60a, and the spread filter 70a which are the differences between the lighting fixture 1a which concerns on this Embodiment, and the lighting fixture 1 which concerns on Embodiment 1 is demonstrated.

  As shown in FIG. 8, the instrument main body 10 a includes a shade part 11 a, an attachment part 12, and a heat radiating part 13 in the same manner as the instrument main body 10 according to Embodiment 1. The instrument main body 10a differs from the instrument main body 10 according to Embodiment 1 in the configuration of the shade portion 11a. In the present embodiment, the shade portion 11a includes a plurality of second locking portions 114a. As shown in FIG. 8, the second locking portion 114a is a recess. In the present embodiment, the shade portion 11a includes four second locking portions 114a. The 2nd latching | locking part 114a latches the 2nd to-be-latched part 660 of the cylindrical member 60a.

  As shown in FIG. 9, the tubular member 60a includes a plurality of first locking portions 612a that lock the spread filter 70a. In the present embodiment, the first locking portion 612a is a notch provided on the inner surface of the cylindrical member 60a. Moreover, the 1st latching | locking part 612a is arrange | positioned at equal intervals in the circumferential direction of the cylindrical member 60a. Thereby, by providing the first locked portions 710a and 711 of the spread filter 70a at a position corresponding to the first locking portion 612a, the first locked portion 711 is any of the plurality of first locking portions 612a. Can also be locked. That is, the light diffusion direction of the spread filter 70a can be selected as one of a plurality of directions.

  The cylindrical member 60a includes four second locked portions 660 on the outer surface in the same manner as the cylindrical member 60 according to the first embodiment. The cylindrical member 60a is held inside the instrument body 10a by the second locked portion 660 being locked to the second locking portion 114a. In the present embodiment, the second locked portion 660 is a plurality of convex portions, the second locking portion 114a is formed on the inner surface of the shade portion 11a, and the plurality of second locked portions 660 are arranged. A plurality of recesses that are respectively locked. By providing the cylindrical member 60a with the above-described configuration, the cylindrical member 60a is simply inserted into the shade portion 11a so that the four second locked portions 660 are locked to the four second locking portions 114a, respectively. Easy to install. Moreover, since the 2nd latching | locking part 114a is a recessed part as FIG. 8 shows, rotation with respect to the shade part 11a of the cylindrical member 60a is controlled. For this reason, the light diffusion direction of the spread filter 70a held by the tubular member 60a can be stabilized.

  Further, the second locked portion 660 contacts the second locking portion 114a. Thereby, it can suppress that the cylindrical member 60a rattles with respect to the shade part 11a with the frictional force between the 2nd to-be-latched part 660 and the 2nd latching | locking part 114a. Moreover, in order to suppress the rattling with respect to the shade part 11a of the cylindrical member 60a more, for example, by increasing the dimension in the height direction (the radial direction of the cylindrical member 60a) of the second locked part 660. The second locked portion 660 may be in pressure contact with the second locking portion 114a. That is, the frictional force may be increased by the second locked portion 660 pressing the second locking portion 114a.

  Although not shown in FIG. 8, the cylindrical member 60a according to the present embodiment is arranged inside the shade portion 11a, similarly to the cylindrical member 60 according to the first embodiment.

  As shown in FIG. 9, the spread filter 70a includes first locked portions 710a and 711 locked to the first locking portions 612a of the tubular member 60a. In the present embodiment, the first locked portions 710a and 711 are protrusions provided on the periphery of the spread filter 70a. A mark portion 730 a is formed on the first locked portion 711. The mark part 730a is a part having a predetermined shape formed at the tip part of the first locked part 711, and indicates the direction in which light is diffused by the spread filter 70a. In the present embodiment, the mark portion 730a is a substantially triangular cutout. In the present embodiment, a mark portion 730a is formed in each of the first locked portions 711 provided at the opposing positions on the periphery of the spread filter 70a, and the direction connecting the two mark portions 730a (FIG. 9). (The direction indicated by the one-dot chain line arrow) is relatively large in light diffusion. Further, light diffusion is relatively small in a direction perpendicular to the direction. Note that light diffusion may be relatively small in the direction connecting the two mark portions 730a, and light diffusion may be increased in a direction perpendicular to the direction.

  Although not shown in FIG. 8, the spread filter 70a according to the present embodiment is held by the cylindrical member 60a inside the shade portion 11a. Details of the locking configuration of the spread filter 70a will be described later.

[2-2. Spread filter locking configuration]
Subsequently, a locking configuration of the spread filter 70a according to the present embodiment will be described. Also in the present embodiment, the spread filter 70a is held by the cylindrical member 60a.

  As shown in FIG. 9, in the present embodiment, the cylindrical member 60a has a plurality of notches as first locking portions 612a in the vicinity of the end on the optical member 50 side (positive side in the y-axis direction). Is formed.

  Here, the maximum dimension of the spread filter 70a in the direction perpendicular to the optical axis J is larger than the inner diameter of the cylindrical member 60a. Further, in the present embodiment, the maximum dimension of the spread filter 70a in the direction perpendicular to the optical axis J is larger than the distance between the two first locking portions 612a facing each other. Further, the maximum dimension (diameter) in the direction perpendicular to the optical axis J of the part excluding the first locked portions 710a and 711 of the spread filter 70a is smaller than the distance between the two first locking portions 612a facing each other. . Therefore, as FIG. 9 shows, the 1st to-be-latched parts 710a and 711 of the spread filter 70a can be arrange | positioned at the 1st latching | locking part 612a, respectively. In the present embodiment, when the first locked portions 710a and 711 of the spread filter 70a are arranged in this way, the spread filter 70a is not elastically deformed.

  As described above, by disposing the spread filter 70a on the cylindrical member 60a, the first locked portions 710a and 711 are locked to the first locking portion 612a. Thereby, it is suppressed that the spread filter 70a rotates centering on the optical axis J with respect to the cylindrical member 60a. Moreover, when the 2nd to-be-latched part 660 is latched by the 2nd latching | locking part 114a of the shade part 11a, it is suppressed that the cylindrical member 60a rotates with respect to the shade part 11a.

  As described above, the spread filter 70a is held so as not to rotate with respect to the lighting fixture 1a. For this reason, in the lighting fixture 1a which concerns on this Embodiment, the light-diffusion direction of the spread filter 70a can be fixed. Therefore, the light distribution characteristic of the lighting fixture 1a can be stabilized.

  On the other hand, in the optical filter J direction, the spread filter 70a has first locked portions 710a and 711 between the tubular member 60a and the optical member 50 disposed on the positive side in the y-axis direction of the tubular member 60a. Positional fluctuation is regulated by the pinching.

  As described above, the spread filter 70a according to the present embodiment is restricted from moving in the optical axis J direction of the lighting fixture 1a. Thereby, it is suppressed that the spread filter 70a leaves | separates from the lighting fixture 1a.

[2-3. How to attach / detach the spread filter]
Next, a method for attaching / detaching the spread filter 70a according to the present embodiment to / from the cylindrical member 60a will be described.

  Also in the present embodiment, as in the first embodiment, in the lighting fixture 1a, the components other than the spread filter 70a are assembled, and finally the spread filter 70a is attached to the tubular member 60a.

  As described above, the maximum dimension of the spread filter 70a in the direction perpendicular to the optical axis J direction is larger than the inner diameter of the cylindrical member 60a. Therefore, in order to insert the spread filter 70a into the cylindrical member 60a, the spread filter 70a is inserted into the cylindrical member 60a in a state of being elastically deformed so as to reduce the maximum dimension. The spread filter 70a is arranged so that at least one of the first locked portions 710a and 711 is locked to the first locking portion 612a, and then returned to its original shape. When the spread filter 70a is returned to the original shape, the position of the spread filter 70a is adjusted so that all the first locked portions 710a and 711 are arranged in the first locking portions 612a, respectively. Thereby, all the 1st to-be-latched parts 710a and 711 can be arrange | positioned at the 1st latching | locking part 612a. When the spread filter 70a is arranged on the tubular member 60a, it is necessary to select the arrangement of the mark portion 730a so that the light diffusion direction of the spread filter 70a becomes a desired direction.

  Moreover, when removing the spread filter 70a from the lighting fixture 1a, it can take out similarly to the case of Embodiment 1. FIG.

  As mentioned above, also in the lighting fixture 1a which concerns on this Embodiment, the spread filter 70a can be attached or detached only by moving the spread filter 70a in the state elastically deformed. That is, the lighting fixture 1a according to the present embodiment can simplify the attaching / detaching work of the spread filter 70a.

[2-4. Effect etc.]
As described above, the luminaire 1a according to the present embodiment is similar to the luminaire 1 according to the first embodiment, in which the light source 30 and the light source 30 are disposed inside, and the tube shape surrounds the optical axis of the light source 30. The instrument main body 10a provided with the shade part 11a. Furthermore, the luminaire 1a includes a cylindrical member 60a disposed on the inner surface of the shade portion 11a, and a substantially flat spread filter 70a held by the cylindrical member 60a. The spread filter 70a includes a first locked portion 710a that is locked to the tubular member 60a. The cylindrical member 60a includes a first locking portion 612a that locks the first locked portion 710a. The spread filter 70a can be attached to and detached from the cylindrical member 60a by being elastically deformed.

  Thus, the lighting fixture 1a which concerns on this Embodiment can simplify the attachment or detachment work of the spread filter 70a similarly to the lighting fixture 1 which concerns on Embodiment 1. FIG.

  Moreover, in the lighting fixture 1a which concerns on this Embodiment, the spread filter 70a may be hold | maintained so that it may not rotate with respect to the fixture main body 10a.

  Thereby, the light diffusion direction of the spread filter 70a can be stabilized.

  Moreover, in the lighting fixture 1a which concerns on this Embodiment, the spread filter 70a is provided with the some 1st to-be-latched part 710a, and the 1st to-be-latched part 710a is the protrusion part arrange | positioned at the periphery of the spread filter 70a. The cylindrical member 60 may include a plurality of first locking portions 612a, and the plurality of first locking portions 612a may be a plurality of cutout portions arranged at equal intervals on the cylindrical member 60. .

  Accordingly, the first locked portions 711 are locked to any of the plurality of first locking portions 612a by providing the first locked portions 710a and 711 at positions corresponding to the first locking portions 612a. Can be made. That is, the light diffusion direction of the spread filter 70a can be selected as one of a plurality of directions.

  Moreover, in the lighting fixture 1a which concerns on this Embodiment, the cylindrical member 60a is provided with the some 2nd to-be-latched part 660a, the 2nd to-be-latched part 660a is a convex part, and the shade part 11a is A plurality of second locking portions 114a are provided, and the second locking portions 114a may be concave portions.

  Thereby, it is suppressed that the cylindrical member 60a rotates with respect to the shade part 11a. For this reason, the light diffusion direction of the spread filter 70a held by the tubular member 60a can be stabilized.

(Variations, etc.)
As mentioned above, although the lighting fixture which concerns on this invention was demonstrated based on embodiment, this invention is not limited to the said embodiment.

  For example, in the above embodiment, the optical member 50 is a Fresnel lens, but the optical member 50 is not limited to this. The optical member 50 may be, for example, a hybrid lens or a dome type lens.

  Moreover, in the said embodiment, although the level | step-difference part and the notch part were used as the 1st latching | locking parts 612 and 612a, the structure of a 1st latching | locking part is not limited to these. For example, the first locking portion may be a groove portion.

  Moreover, in the said embodiment, although COB type LED was used in the light source 30, you may use another light emitting element. For example, an SMD (Surface Mount Device) type LED may be used. Moreover, you may use other solid light emitting elements, such as an organic EL (Electro Luminescence) element, or other light sources other than a solid light emitting element.

  In addition, the present invention can be realized by various combinations conceived by those skilled in the art for each embodiment, or by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention. This form is also included in the present invention.

DESCRIPTION OF SYMBOLS 1, 1a Lighting fixture 10, 10a Appliance main body 11, 11a Seed part 12 Mounting part 13 Heat radiation part 20 Frame 30 Light source 50 Optical member (Fresnel lens)
60, 60a Tubular member 70, 70a Spread filter 114, 114a Second locking part 612, 612a First locking part 660 Second locked part 710, 710a, 711 First locked part J Optical axis

Claims (11)

A light source;
An instrument body provided with a cylindrical shade portion surrounding the optical axis of the light source, wherein the light source is disposed inside;
A cylindrical member disposed on the inner surface of the shade portion;
A substantially flat spread filter held by the tubular member;
The spread filter includes a first locked portion that is locked to the cylindrical member,
The cylindrical member includes a first locking portion that locks the first locked portion,
The spread filter can be attached to and detached from the cylindrical member by being elastically deformed. The cylindrical member includes a second locked portion on the outer surface,
The instrument body includes a second locking portion for locking the second locked portion on the inner surface of the shade portion,
The lighting fixture according to claim 1, wherein the second locked portion is in contact with the second locking portion. The lighting fixture according to claim 1, wherein the spread filter is rotatably held with respect to the fixture main body. The first locked portion is a protrusion provided on the periphery of the spread filter,
The lighting fixture according to any one of claims 1 to 3, wherein the first locking portion is an annular stepped portion provided on an inner surface of the cylindrical member. The cylindrical member includes a plurality of the second locked portions,
The second locked portion is a convex portion,
The lighting fixture according to claim 2, wherein the second locking portion is an annular groove formed on an inner surface of the shade portion. The lighting fixture according to claim 1, wherein the spread filter is held so as not to rotate with respect to the fixture main body. The spread filter includes a plurality of the first locked portions,
The first locked portion is a protrusion disposed at the periphery of the spread filter,
The cylindrical member includes a plurality of the first locking portions,
The lighting fixture according to claim 1, wherein the plurality of first locking portions are a plurality of cutout portions arranged at equal intervals on the cylindrical member. The cylindrical member includes a plurality of the second locked portions,
The second locked portion is a convex portion,
The shade portion includes a plurality of the second locking portions,
The lighting fixture according to claim 2, wherein the second locking portion is a recess. The lighting fixture according to claim 1, further comprising a Fresnel lens between the light source and the spread filter. The lighting apparatus according to claim 1, wherein the spread filter is made of resin. The lighting fixture according to claim 1, wherein a maximum dimension of the spread filter in a direction perpendicular to the optical axis is larger than an inner diameter of the cylindrical member.

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