WO2019065528A1

WO2019065528A1 - Lighting device

Info

Publication number: WO2019065528A1
Application number: PCT/JP2018/035157
Authority: WO
Inventors: 信樹松井; 恭男大野
Original assignee: ミネベアミツミ株式会社
Priority date: 2017-09-29
Filing date: 2018-09-21
Publication date: 2019-04-04
Also published as: EP3690307A1; JP2019067605A; EP3690307A4

Abstract

A lighting device (1) according to an embodiment is provided with a light source (30), a light distribution member (50, 80), and a colored portion (83). A frame body (10) is a tubular member disposed on a light extraction direction side of the light source. The colored portion is disposed along an inner peripheral wall of the light distribution member and is colored in a color that reflects a predetermined wavelength of light.

Description

Lighting device

The present invention relates to a lighting device.

Heretofore, there have been provided various lighting devices that emit different colors. For example, by providing a layer having a color temperature changing function on the head of an LED (Light Emitting Diode) element, a lighting device whose chromaticity changes depending on the location of a light diffuser (such as a shade) serving as a secondary light source is provided. It is done. In this case, for example, when the LED light source is turned on, the conical light diffuser becomes a white light secondary light source whose color temperature gradually changes to warm from the bottom to the top.

JP, 2017-092013, A

The color emitted from the lighting device can be changed to a desired color even in a lighting device such as a downlight or a pinhole light different from the lighting device that uses the light diffuser serving as the secondary light source as described above Is desired. However, in the above-described prior art, the color of the light diffuser is gradually changed, and it is difficult to change the position of the user to a desired color.

This invention is made in view of the above, Comprising: It aims at providing the illuminating device which can make the color which a user recognizes changeable according to the position with respect to an illuminating device.

In order to solve the problems described above and to achieve the object, an illumination device according to an aspect of the present invention includes a light source, a cylindrical light distribution member disposed on the light extraction direction side of the light source, and the light distribution And a colored portion provided along the inner circumferential surface of the member and colored to reflect light of a predetermined wavelength.

According to an aspect of the present invention, it is possible to change the color recognized by the user according to the position with respect to the lighting device.

FIG. 1 is a perspective view showing a lighting device according to the first embodiment. FIG. 2 is a perspective view showing the lighting device according to the first embodiment. FIG. 3 is a perspective view showing the lighting unit according to the first embodiment. FIG. 4 is a plan view showing the main part of the lighting device according to the first embodiment. FIG. 5 is a perspective view showing the main part of the lighting device according to the first embodiment. FIG. 6 is a plan view showing the main part of the lighting device according to the first embodiment. FIG. 7 is a plan view showing the main part of the lighting device according to the first embodiment. FIG. 8 is a plan view showing the main part of the lighting device according to the first embodiment. FIG. 9 is a perspective view showing the lens holder according to the first embodiment. FIG. 10 is a cross-sectional view showing the lighting apparatus according to the first embodiment. FIG. 11 is a perspective view showing a lighting device according to the second embodiment. FIG. 12 is a perspective view showing a lighting device according to the second embodiment. FIG. 13 is a perspective view showing the main part of the illumination device according to the second embodiment. FIG. 14 is a plan view showing the main part of the illumination device according to the second embodiment. FIG. 15 is a plan view showing the main part of the illumination device according to the second embodiment. FIG. 16 is a plan view showing the main part of the illumination device according to the second embodiment. FIG. 17 is a perspective view showing a lens holder according to a second embodiment. FIG. 18 is a cross-sectional view showing a luminaire according to a second embodiment.

In the following first embodiment, a lighting apparatus 1 which is a spotlight (pinhole light) using a lighting unit 2 will be described with reference to the drawings. The application of the illumination unit is not limited by the illumination device 1 according to the first embodiment described below. The lighting unit is not limited to the lighting device 1 and may be used for any lighting device depending on the purpose, as long as it is a usable lighting device. In addition, it should be noted that the drawings are schematic, and the relationship between dimensions of each element, the ratio of each element, and the like may differ from reality. Even between the drawings, there may be a case where the dimensional relationships and ratios differ from one another.

First Embodiment
First, the outline of the configuration of the illumination device 1 will be described with reference to FIGS. 1 to 3. FIG.1 and FIG.2 is a perspective view which shows the illuminating device based on 1st Embodiment. Specifically, FIG. 1 is a perspective view seen from the arrangement side of the heat sink 20 of the lighting device 1. Moreover, FIG. 2 is a perspective view seen from the arrangement | positioning side of the unit 3 for light distribution of the illuminating device 1. FIG. FIG. 3 is a perspective view showing the lighting unit 2 according to the first embodiment.

The lighting device 1 includes a lighting unit 2 and a light distribution unit 3. The lighting unit 2 includes a frame 10, a heat sink 20, and a light source unit 30. Further, the light distribution unit 3 has a base member 40 as a light distribution member, a lens holder 50 (see FIG. 9), and a lens unit 60 (see FIG. 9).

First, each configuration of the lighting unit 2 will be described. As shown in FIG. 3, the frame 10 has a cylindrical base 11 with a bottom and a locking portion 12 projecting from the peripheral end on the opening side of the base 11. Further, as shown in FIG. 1, the heat sink 20 has a rib portion 201 and four fin portions of first to fourth fin portions 21 to 24 which are continuous with the rib portion 201. For the heat sink 20, a metal material having a high thermal conductivity such as aluminum (aluminum) is used.

The first fin portion 21 and the second fin portion 22 are provided at positions sandwiching the rib portion 201. Further, the third fin portion 23 and the fourth fin portion 24 are provided at positions sandwiching the rib portion 201. The mounting member 25 is connected to the third fin portion 23 and the fourth fin portion 24. The details will be described later.

The light source unit 30 further includes a substrate 31 on which the light emitting element 311 is disposed on one surface, and a holding member 32 for holding the substrate 31. For example, the light emitting element 311 may be a light emitting diode (LED), and the light source unit 30 may be a chip on board (COB) or the like. Also, for example, the holding member 32 may be a COB holder or the like.

A central portion of the bottom portion 111 of the base portion 11 of the frame 10 is open, and the light source unit 30 is disposed in the opening portion of the bottom portion 111. As shown in FIG. 3, one surface of the light emitting element 311 is disposed on the bottom 111 of the base 11 so as to face the opening of the base 11. Hereinafter, the direction from the light emitting element 311 toward the opening of the base 11 may be referred to as “the light extraction direction of the light source unit 30”. The light emitting element 311 emits visible light (hereinafter, may be simply referred to as “light”).

The heat sink 20 is disposed on the outer surface side of the bottom portion 111 of the base 11. For example, the rib portion 201 of the heat sink 20 is disposed at a position overlapping the central portion of the bottom portion 111. As shown in FIG. 3, the attachment fins 211 of the first fin portion 21 are screwed to the insertion holes provided in the attachment portion 112 of the base 11 by the screw members 212. Further, as shown in FIG. 2, the attachment fins 221 of the second fin portion 22 are screwed to the insertion holes provided in the attachment portion 112 of the base 11 by the screw members 222. Thereby, the heat sink 20 is attached to the frame 10.

Further, the light source unit 30 is attached to the heat sink 20 by screwing the holding member 32 to the insertion hole provided in the rib portion 201 by the screw member 321 (see FIG. 6). Thereby, the light source unit 30 and the heat sink 20 are in thermal contact with each other. Thus, by providing the heat sink 20 on the back surface side of the substrate 31 of the light source unit 30, the heat from the substrate 31 can be efficiently transferred to the heat sink 20 on the back surface side.

The base 11 is provided with a reflecting surface 13 which is an inclined surface which increases in diameter toward the opening. As described above, the base 11 is provided with the reflective surface 13 facing the light extraction direction.

The locking portion 12 is provided on the outer peripheral wall of the portion of the base 11 where the reflective surface 13 is formed. For example, on the outer peripheral wall of the base 11, three locking portions 12 are provided at equal intervals (for example, 120 ° intervals) along the outer periphery. In the example shown in FIG. 3, the three locking portions 12 are provided on the outer peripheral wall of the portion of the base 11 where the reflective surface 13 is formed.

Further, at the outer peripheral end of the opening side of the base 11, a mounting portion 121 extending in the radial direction is provided. For example, the outer circumferential wall of the base 11 is provided along the entire outer circumferential end on the opening side.

In addition, a rotation restricting portion 14 is provided on the outer periphery of the bottom portion 111 of the base portion 11. The rotation restricting portion 14 has an insertion hole 140 used for screwing. For example, on the outer peripheral wall of the base 11, three rotation restricting portions 14 are provided at equal intervals (for example, 120 ° intervals) along the outer peripheral end on the opening side.

Here, connection of the attachment member 25 to the heat sink 20 will be described. As shown in FIG. 3, mounting members 25-1 and 25-2 are connected to the third fin portion 23 and the fourth fin portion 24 of the heat sink 20, respectively. Specifically, the mounting member 25-1 is connected to the third fin portion 23, and the mounting member 25-2 is connected to the fourth fin portion 24. When the attachment members 25-1 and 25-2 are not distinguished from one another, they are referred to as the attachment member 25.

The configuration of the mounting member 25 and the mounting (fixing) of the mounting member 25 to the heat sink 20 will be described with reference to FIG. 4. FIG. 4 is a plan view showing the main part of the lighting device according to the first embodiment. Specifically, FIG. 4 is a view showing a connection portion between the third fin portion 23 of the heat sink 20 and the attachment member 25-1.

The mounting member 25 has a spring portion 26 and a bearing portion 27. The spring portion 26 is formed of an elastic material or the like. The spring portion 26 in the lighting device 1 is a wound spring used for installation (attachment) of the lighting device 1. The spring portion 26 includes a pair of arm portions 261 extending substantially in parallel at intervals, a pair of coil portions 262 continuing to one end of each arm portion 261, and a support portion 263 continuing to the other end of each arm portion 261. Have. The bearing portion 27 has a cylindrical base portion 271 and a pair of extending portions 272 extending in the axial direction of the base portion 271 from both end portions of the base portion 271. As shown in FIG. 4, the diameter of the base portion 271 of the pivotal support portion 27 is larger than the inner diameter of the coil portion 262, and the diameter of the extension portion 272 is smaller than the inner diameter of the coil portion 262. The base portion 271 of the bearing portion 27 is disposed between the pair of coil portions 262 of the spring portion 26, and the pair of extending portions 272 of the bearing portion 27 are inserted into the corresponding coil portions 262. For example, by applying a force to the spring portion 26 in the direction in which the distance between the pair of coil portions 262 separates, the distance between the pair of coil portions 262 is increased to arrange the pivot portion 27 between the pair of coil portions 262. By releasing the force applied to the portion 26, the pair of extending portions 272 may be inserted into the corresponding coil portions 262.

Further, the bearing portion 27 has a shaft rod 273 that is inserted into a through hole (not shown) formed in the base portion 271 and one extending portion 272. The tip of the shaft rod 273 protrudes from the end of the extending portion 272. Then, the tip of the shaft rod 273 is inserted into an insertion hole (not shown) provided in each of the pair of support fins 231 of the third fin portion 23, whereby the attachment member 25-1 is connected to the heat sink 20. Be done. In addition, a C ring 274 is attached to the tip of the shaft 273 protruding from the support fin 231, and the shaft 273 is pulled out of the through hole of the base 271 and one extending portion 272 by the C ring 274. Is suppressed.

Further, the spring portion 26 is centered on the pivot support portion 27 of the attachment member 25-1 by the distal end portion 264 of the coil portion 262 being inserted through the restriction hole (insertion hole) provided in the third fin portion 23. And rotation is regulated. In addition, the third fin portion 23 has a placement fin 232 between the pair of support fins 231. For example, the third fin portion 23 has two placement fins 232. As shown in FIG. 1, the placement fins 232 are formed such that the attachment member 25-1 can be placed between the pair of support fins 231. For example, the placement fin 232 is partially cut away so that the attachment member 25-1 can be placed between the pair of support fins 231.

Further, also in the fourth fin portion 24, the attachment member 25 is connected similarly to the third fin portion 23. As shown in FIG. 2, the tip of the shaft rod 273 in the mounting member 25-2 is inserted into an insertion hole (not shown) provided in each of the pair of support fins 241 of the fourth fin portion 24, The mounting member 25-2 is coupled to the heat sink 20. In addition, a C ring 274 is attached to the tip of the shaft rod 273 protruding from the support fin 241, and the shaft rod 273 is pulled out of the through holes of the base 271 and the pair of extension parts 272 by the C ring 274. Is suppressed.

Further, the spring portion 26 can be rotated about the pivotal support portion 27 of the mounting member 25-2 by inserting the end portion 264 of the coil portion 262 into the restriction hole provided in the fourth fin portion 24. It is regulated. In addition, the fourth fin portion 24 has a placement fin 242 between the pair of support fins 241. For example, the fourth fin portion 24 has two placement fins 242. As shown in FIG. 2, the placement fins 242 are formed such that the attachment member 25-2 can be placed between the pair of support fins 241. For example, the placement fins 232 are partially cut away so that the attachment member 25-2 can be placed between the pair of support fins 231.

Thus, the mounting member 25-1 and the mounting member 25-2 are provided at positions sandwiching the rib portion 201 of the heat sink 20 by being connected to the third fin portion 23 and the fourth fin portion 24, respectively. That is, in the lighting device 1, the mounting strength of the mounting member 25 can be improved by connecting the mounting member 25 to the heat sink 20 formed of a metal material such as aluminum. For example, in the lighting device 1, the mounting strength of the mounting member 25 can be improved as compared to the case where the mounting member 25 is mounted on a member other than the heat sink 20 in the lighting device 1 such as the base member 40. The details of the installation of the lighting device 1 by the mounting member 25-1 and the mounting member 25-2 will be described later.

Next, referring back to FIG. 1 and FIG. 2, each configuration of the light distribution unit 3 will be described. As shown in FIG. 1, the base member 40 is formed in a cylindrical shape. Here, the inner diameter of the base member 40 is larger than the outer diameter of the portion including the mounting portion 121 in the base portion 11 of the frame 10 and is larger than the outer diameter of the portion including the locking portion 12 in the base portion 11 of the frame 10 It shall be small. Further, a notch groove 41 is provided at one axial end of the base member 40 (hereinafter, may be simply referred to as “one end of the base member 40”).

Further, at the other end of the base member 40 in the axial direction, a diameter is larger than that of the other end, and a cover 45 that covers the other end is provided. The cover 45 is formed in a disk shape, and an opening 451 is formed at the center. Thus, the light from the light source unit 30 is emitted from the opening 451 of the cover 45 to the outside of the lighting device 1.

From here, attachment of the lighting unit 2 and the light distribution unit 3 will be described using FIGS. 5 and 6. FIG. 5 is a perspective view showing the main part of the lighting device according to the first embodiment. Specifically, FIG. 5 is a view showing a connecting portion between the locking portion 12 and the notch groove 41. As shown in FIG. FIG. 6 is a plan view showing the main part of the lighting device according to the first embodiment.

The notch groove 41 has a bottom portion 411 and an extension portion 412 extending from the bottom portion 411 in one circumferential direction. In the example shown in FIG. 6, the notch groove 41 has an extending portion 412 extending from the bottom 411 in the clockwise direction. Hereinafter, the clockwise direction in FIG. 6 is referred to as “one direction”. The width of the bottom portion 411 of the notch groove 41 is larger than the width in the circumferential direction of the locking portion 12, and the locking portion 12 can be inserted. Further, the height of the extension portion 412 of the notch groove 41 is larger than the height of the locking portion 12 in the axial direction of the frame 10, and the locking portion 12 can be inserted. For example, on the outer peripheral wall of the base member 40, three notched grooves 41 are provided at equal intervals (for example, 120 ° intervals) along the outer peripheral end on one end side in the axial direction. In the example shown in FIG. 6, three notch grooves 41 are provided at positions corresponding to each of the three locking portions 12 of the frame 10.

For example, in the base member 40, the frame 10 is inserted with its axis aligned from the opening side. Specifically, the frame 10 is inserted into the base member 40 with its axis aligned from the opening side, with each of the three locking portions 12 superimposed on the position of the three notch grooves 41. Further, the frame body 10 is rotated in one direction in a state in which each locking portion 12 is inserted into the base member 40 until reaching the vicinity of the bottom portion 411 of the corresponding notch groove 41. Thereby, each locking portion 12 of the frame 10 is disposed in the extending portion 412 of the corresponding notch groove 41. Thus, the movement of the base member 40 relative to the frame 10 in the axial direction of the base member 40 can be restricted by arranging the locking portion 12 in the extending portion 412 of the notch groove 41. . In the lighting device 1, the locking portion 12 is formed by the notched groove 41 by the tapered portion 413 formed in the vicinity of the outer peripheral end of the notched groove 41 and the tapered portion 414 (see FIG. 2) formed in the extending portion 412. It can be guided inward and the locking portion 12 can be easily disposed in the extension portion 412. Below, the position of the frame 10 in the state in which the latching | locking part 12 is arrange | positioned in the extending part 412 of the notch groove 41 may be made into "the fixed position of the frame 10."

At the fixed position of the frame 10, the base member 40 is provided with three insertion holes (not shown) at positions respectively corresponding to the insertion holes 140 of the three rotation restricting portions 14. That is, at the fixed position of the frame 10, the insertion hole of the base member 40 and the insertion hole 140 of the rotation restricting portion 14 overlap. Then, the screw member 141 is screwed into the insertion hole of the base member 40 and the insertion hole 140 of the rotation restricting portion 14, whereby the base member 40 is screwed and attached to the frame 10. Thereby, the base member 40 and the frame 10 are connected. In addition, the rotation of the base member 40 about the axis of the base member 40 relative to the frame 10 is restricted. Thereby, lighting installation 1 can control rotation of base member 40 in the direction which rotates from the fixed position of frame 10 further, and can control the load concerning lock part 12. As shown in FIG.

Further, the base member 40 is screwed to the frame 10 and attached, thereby restricting the rotation of the base member 40 in one direction. Thereby, lighting installation 1 can control rotation of base member 40 in the direction which returns from the fixed position of frame 10 to the position before rotation. Accordingly, the lighting device 1 can suppress the locking portion 12 of the frame 10 from coming out of the notch groove 41.

As described above, in the lighting device 1, the base member 40 is screwed and attached to the frame 10 by the screw member 141. Thereby, the base member 40 becomes rotatable with respect to the frame 10 by removing the screw member 141. Therefore, the installer of the lighting device 1 removes the screw member 141 and rotates the base member 40 in one direction with respect to the frame 10 to release the connection between the locking portion 12 and the notch groove 41. be able to. Therefore, the installer of the lighting device 1 can attach various light distribution units to the lighting unit 2.

From here, the lens holder 50 and the like of the light distribution unit 3 will be described with reference to FIGS. 7 to 9. FIG. FIG. 7 is a plan view showing the main part of the lighting device according to the first embodiment. Specifically, FIG. 7 is a plan view showing the illumination device 1 excluding the illumination unit 2, that is, the light distribution unit 3. FIG. 8 is a plan view showing the main part of the lighting device according to the first embodiment. Specifically, FIG. 8 is a plan view showing the light distribution unit 3 with the lens 61 removed. FIG. 9 is a perspective view showing the lens holder according to the first embodiment.

As shown in FIG. 7, a lens unit 60 is provided at one end of the base member 40. The lens unit 60 has a lens 61 and a lens shade 62. As shown in FIG. 8, a lens shade 62 is disposed at one end of the base member 40. The lens shade 62 is formed of a metal material such as aluminum. The lens shade 62 may be a light shielding plate. The lens shade 62 has an opening 621 at the center.

Further, the outer periphery of the lens shade 62 is formed in a shape that matches the shape of the one end portion of the base member 40. For example, a recess 622 is provided on the outer periphery of the lens shade 62 in accordance with the shape of the protrusion 452 that protrudes inward from one end of the base member 40. The movement of the lens shade 62 with respect to the base member 40 is restricted by the protrusion 452 of the base member 40 fitting into the recess 622. Further, on the outer periphery of the lens shade 62, portions other than the concave portion 622 are also formed in a shape conforming to the shape of one end portion of the base member 40, and the lens shade 62 rotates in the rotational direction with respect to the base member 40 at each portion. As a result, the movement of the lens shade 62 with respect to the base member 40 is restricted.

Further, as shown in FIG. 7, the lens 61 is disposed so as to overlap the lens shade 62 at one end of the base member 40. That is, in the illumination device 1, the lens 61 and the lens shade 62 are arranged in order from the light source unit 30 side. As described above, by arranging the lens shade 62 so as to overlap the lens 61, the lens 61 can be protected, and light can be prevented from leaking to the outside of the lighting apparatus 1 from a location other than the opening 621 of the lens shade 62.

The outer periphery of the lens 61 is formed in a shape that matches the shape of one end of the base member 40. For example, a recess 611 is provided on the outer periphery of the lens 61 in accordance with the shape of the projecting portion 452 which protrudes inward from one end of the base member 40. The movement of the lens 61 relative to the base member 40 is restricted by the protrusion 452 of the base member 40 being fitted in the recess 611. Further, two restriction pieces 612 extending in the radial direction are formed on the outer periphery of the lens 61, and the two restriction pieces 612 abut on one end of the base member 40 to move the lens 61 relative to the base member 40. Is regulated.

Further, as shown in FIG. 9, the lens holder 50 is provided so as to overlap the lens unit 60. Specifically, in the illumination device 1, the lens 61, the lens shade 62, and the lens holder 50 are arranged in order from the light source unit 30 side. Thus, the lens holder 50 supports the lens 61. For example, the lens holder 50 may be formed of a resin material such as polycarbonate.

The lens holder 50 is disposed in the base member 40. The lens holder 50 is a tubular light distribution member. The lens holder 50 is disposed along the cover 45 of the base member 40 with one end 52 of the base 51 formed in a cylindrical shape. In addition, the lens holder 50 is disposed with the other end of the base 51 along the peripheral end of the opening 621 of the lens shade 62.

The base portion 51 is provided along the inner circumferential surface, and is provided with a colored portion 53 colored in a color that reflects light of a predetermined wavelength. As described above, in the lighting device 1, the colored portion 53 is provided so as to overlap the lens holder 50, that is, the inner peripheral surface of the light distribution member. The light reflected by the colored portion 53 may be light of any wavelength as long as it is visible light. For example, the colored portion 53 may be colored to reflect various lights such as red, yellow, green, and blue. For example, the base 51 may be formed of a light absorbing color, that is, a black member.

For example, the colored portion 53 may be a sheet member disposed along the inner circumferential surface of the base 51. For example, the colored portion 53 may be various members such as paper or film colored in a desired color. For example, the colored portion 53 may be a sheet-like member such as paper or a film rounded to a shape (cylindrical shape) along the inner peripheral surface of the base 51. Also, for example, the colored portion 53 may be formed by applying a predetermined material to the inner peripheral surface of the base 51. In this case, the colored portion 53 may be an inner circumferential surface colored to reflect light of a predetermined wavelength by applying a paint of a desired color.

Here, with reference to FIG. 10, the installation (attachment) of the illumination device 1 and the aspect of the color visually recognized by the user by the coloring unit 53 will be described. FIG. 10 is a cross-sectional view showing the lighting apparatus according to the first embodiment. In addition, sectional drawing of the illuminating device 1 shown in FIG. 10 is schematic which illustrates installation of the illuminating device 1, the illumination range of the illuminating device 1, etc. FIG.

In the example of FIG. 10, the coloring part 53 shows the case where it is an inner peripheral surface colored by the color which reflects the light of a predetermined wavelength by applying the coating material of a desired color. Moreover, in the example of FIG. 10, the light source part 30 shows the case where white light is emitted. Moreover, in the example of FIG. 10, the side which the light source part 30 (light emitting element 311) faces is demonstrated as downward. That is, the base member 40 side of the illuminating device 1 is referred to as the lower side, and the heat sink 20 side is described as the upper side.

First, installation of the lighting device 1 will be described. In the example of FIG. 10, the lighting device 1 is fixed to the embedded hole HL provided in the ceiling CL by the mounting member 25. Specifically, the lighting device 1 moves upward by the base member 40 being inserted into the embedding hole HL and the cover 45 having an outer diameter larger than the embedding hole HL coming into contact with the ceiling CL from below. Is regulated. For example, the installer of the lighting device 1 inserts the lighting device 1 into the embedded hole HL from the heat sink 20 in a state where the mounting member 25 is pressed and narrowed. After the heat sink 20 is inserted into the embedding hole HL, the mounting member 25 expands to the original state by its own bias on the back side of the ceiling CL, and the mounting member 25 abuts on the ceiling CL, whereby the base member 40 is The lighting device 1 is installed in the ceiling CL by being fitted into the embedded hole HL.

As described above, the lighting device 1 is biased upward by the mounting member 25 connected to the heat sink 20, whereby the downward movement by its own weight is restricted. Specifically, the lighting device 1 is biased upward by the support portion 263 of the spring portion 26 of the mounting member 25 pressing the ceiling CL downward. Thus, the lighting device 1 is fitted in the embedded hole HL provided in the ceiling CL and installed in the ceiling CL. Further, in the lighting device 1, the mounting member 25 is connected to the heat sink 20, whereby the mounting member 25 is positioned above the position of the embedded hole HL in the vertical direction. Therefore, compared with the case where the attachment member 25 is connected with the base member 40 etc., the illuminating device 1 can match the embedding hole HL with the size (outer diameter) of the base member 40, and improves the designability. Can.

Here, in the conventional lighting device, the mounting member is often connected to a member on the direction (the light extraction direction of light) facing the light source. For example, in the conventional lighting device, the mounting member is often connected to the base member or the like. In such a case, it is difficult to match the size (outside diameter) of the embedding hole or the like in which the lighting device is installed to the outside diameter of the base member or the like due to the restriction by the arrangement of the mounting member. Therefore, in the conventional lighting device, it is difficult to reduce the size (outside diameter) of the embedded hole or the like in which the lighting device is installed, and there is a problem that it is difficult to improve the design. On the other hand, in the lighting device 1, as described above, the mounting member 25 is connected to the heat sink 20, so that the embedding hole HL can be matched to the size (outer diameter) of the base member 40, and the designability is improved. It can be done. In the conventional lighting device, the mounting member is often connected to a member (base member or the like) formed of a resin material or the like. Therefore, in the conventional lighting device, there is a problem that it is difficult to improve the mounting strength of the mounting member due to the restriction on the member side formed of the resin material or the like. On the other hand, in the lighting apparatus 1, the mounting strength of the mounting member 25 can be improved by connecting the mounting member 25 to the heat sink 20 formed of a metal material such as aluminum.

Further, in the lighting device 1, the light emitted from the light emitting element 311 of the light source unit 30 is emitted to the outside of the lighting device 1 through the inside of the frame 10, the lens unit 60 and the base member 40. Specifically, the light emitted from the light emitting element 311 and the light reflected by the reflecting surface 13 of the frame 10 are controlled by the lens 61 of the lens unit 60, and the lens holder 50 disposed in the base member 40. The light passes through the inside and is emitted from the opening 451 of the cover 45 to the outside of the lighting device 1.

As shown in FIG. 10, the lighting device 1 is a spotlight (pinhole light), and the diameter of the opening 451 of the cover 45 is smaller than the inner diameter of the lens holder 50. Therefore, the light distribution control of the lighting device 1 is performed so as to illuminate the area directly below the ceiling CL on which the lighting device 1 is installed, as shown in the lighting range AR11.

Here, for example, in the conventional illumination device which is a spotlight (pinhole light), the inner peripheral surface of the lens holder (light distribution member) is colored to absorb visible light, that is, black. Therefore, in the conventional illumination device, the inner circumferential surface of the lens holder absorbs visible light and does not reflect visible light. Therefore, when the user looks at the lighting device from outside the illumination range of the conventional lighting device, the user does not recognize the light emitted from the conventional lighting device. As described above, in the conventional lighting device, since the inner peripheral surface of the lens holder absorbs visible light, it may be possible for the user positioned outside the lighting range of the conventional lighting device to determine whether the conventional lighting device emits light. Not visible. In addition, the inside of the lighting device is visually recognized by a user who looks at the lighting device from outside the illumination range of the conventional lighting device, for example, in an oblique direction.

On the other hand, in the illumination device 1, the colored portion 53 is provided on the inner peripheral surface of the lens holder 50. Therefore, in the lighting device 1, the colored portion 53 provided on the inner peripheral surface of the lens holder 50 reflects light of a predetermined color. For example, when the colored portion 53 is red, in the illumination device 1, the colored portion 53 of the lens holder 50 reflects light of a wavelength (for example, 620 to 750 nm) corresponding to red. Therefore, when the user looks at the illumination device 1 from outside the illumination range AR11 of the illumination device 1, the user recognizes the red light reflected by the colored portion 53 of the lens holder 50. In the example of FIG. 10, when the user looks at the illumination device 1 from the viewpoint VP11, the user recognizes the red light reflected by the colored portion 53 of the lens holder 50. For example, when white light is emitted from the light source unit 30 and the user looks at the illumination device 1 from the viewpoint VP11, the user emits red light reflected by the coloring unit 53 of the lens holder 50 from the light source unit 30 The color (eg, pink color) in which the white light is mixed is recognized.

As described above, in the lighting device 1, since the colored portion 53 provided on the inner peripheral surface of the lens holder 50 reflects predetermined light, the user who is located outside the lighting range AR11 of the lighting device 1 receives desired light. It can be made visible. That is, the illumination device 1 emits a color (for example, white light) emitted from the light source unit 30 to the illumination range AR11 so that a user located outside the illumination range AR11 can recognize desired light. The light is emitted to the outside of the lighting device 1. Thereby, the user located in the illumination range AR11 visually recognizes the light (for example, white light) irradiating the illumination range AR11, and the user located outside the illumination range AR11 is the desired light reflected by the coloring unit 53 Visualize. Therefore, the lighting device 1 can change the color recognized by the user according to the position with respect to the lighting device 1. For example, the lighting device 1 can change the color recognized by the user according to the position at which the user visually recognizes the lighting device 1 such as the viewpoint VP11. In addition, although the illuminating device 1 which is a spotlight (pinhole light) uses much direct light radiated to the exterior of the illuminating device 1 from the opening 451 of the cover unit 45 from the light source unit 30 through the lens unit 60, The light reflected by the lens holder 50 is also used.

Second Embodiment
The lighting device is not limited to the lighting device 1 such as a spotlight (pinhole light), but may be various lighting devices. This point will be described using FIG. 11 to FIG. In the following second embodiment, a lighting device 4 which is a downlight will be described with reference to the drawings. In addition, about the structure similar to embodiment, the code | symbol same as embodiment is attached | subjected and description is abbreviate | omitted suitably. For example, the lighting unit 2 is the same as the lighting unit 2 shown in the lighting device 1, and the description will be omitted. As described above, the lighting unit 2 can be used for various lighting devices such as the lighting device 1 and the lighting device 4.

First, the outline of the configuration of the illumination device 4 will be described using FIGS. 11 and 12. 11 and 12 are perspective views showing a lighting device according to the second embodiment. Specifically, FIG. 11 is a perspective view seen from the arrangement side of the heat sink 20 of the lighting device 4. FIG. 12 is a perspective view seen from the arrangement side of the light distribution unit 5 of the lighting device 4.

The lighting device 4 has a lighting unit 2 and a light distribution unit 5. The lighting unit 2 includes a frame 10, a heat sink 20, and a light source unit 30. The configuration of the illumination unit 2 is the same as that of the first embodiment, and thus the description thereof is omitted. Also, the light distribution unit 5 has a base member 70 as a light distribution member, a lens holder 80 (see FIG. 17), and a lens unit 90 (see FIG. 17).

From here, each configuration of the light distribution unit 5 will be described using FIGS. 13 to 17. FIG. FIG. 13 is a perspective view showing the main part of the illumination device according to the second embodiment. Specifically, FIG. 13 is a view showing a connection portion between the locking portion 12 and the notch groove 71. As shown in FIG. FIG. 14 is a plan view showing the main part of the illumination device according to the second embodiment. FIG. 15 is a plan view showing the main part of the illumination device according to the second embodiment. Specifically, FIG. 15 is a plan view showing the illumination device 4 excluding the illumination unit 2, that is, the light distribution unit 5. FIG. 16 is a plan view showing the main part of the illumination device according to the second embodiment. Specifically, FIG. 16 is a plan view showing the light distribution unit 5 with the lens 91 removed. FIG. 17 is a perspective view showing a lens holder according to a second embodiment.

In addition, about the structure similar to 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected, and description is abbreviate | omitted suitably. That is, in the second embodiment, the description of the configuration corresponding to the configuration in the first embodiment will be omitted as appropriate, and points different from the first embodiment will be described below.

For example, each configuration in the base member 70 in the second embodiment corresponds to each configuration of the base member 40 in the first embodiment. Thus, since the base member 70 in the second embodiment corresponds to the base member 40 in the first embodiment, in the base member 70, the points similar to the base member 40 are the same as in the first embodiment. "4 *" in shall be replaced with "7 *". Note that “*” is an arbitrary character string (number). For example, the notch groove 71 corresponds to the notch groove 41 of the first embodiment, the cover 75 corresponds to the cover 45 of the first embodiment, and the opening 751 corresponds to the first embodiment. Corresponding to the opening 451 of

Also, for example, each configuration in the lens holder 80 in the second embodiment corresponds to each configuration of the lens holder 50 in the first embodiment. As described above, since the lens holder 80 in the second embodiment corresponds to the lens holder 50 in the first embodiment, in the lens holder 80, the points similar to the lens holder 50 are the same as in the first embodiment. "5 *" shall be replaced with "8 *". For example, the base 81 corresponds to the base 51 of the first embodiment, and the colored portion 83 corresponds to the colored portion 53 of the first embodiment. For example, the base 81 is provided along the inner circumferential surface, and is provided with a colored portion 83 colored in a color that reflects light of a predetermined wavelength. As described above, in the lighting device 4, the colored portion 83 is provided so as to overlap the lens holder 80, that is, the inner peripheral surface of the light distribution member. In addition, “the colored portion is provided so as to overlap on the inner circumferential surface of the light distribution member” means that a colored portion separate from the light distribution member is provided on the inner circumferential surface of the light distribution member, It includes both the configuration in which the inner circumferential surface itself of the member is a colored portion.

Also, for example, each configuration in the lens unit 90 in the second embodiment corresponds to each configuration of the lens unit 60 in the first embodiment. As described above, since the lens unit 90 in the second embodiment corresponds to the lens unit 60 in the first embodiment, in the lens unit 90, the points similar to the lens unit 60 are the same as in the first embodiment. "6 *" shall be replaced with "9 *". For example, the lens 91 corresponds to the lens 61 of the first embodiment, the lens shade 92 corresponds to the lens shade 62 of the first embodiment, and the opening 921 corresponds to the opening 621 of the first embodiment. Corresponds to

The outer periphery of the lens shade 92 is formed in a shape that matches the shape of one end of the base member 70. For example, a recess 922 is provided on the outer periphery of the lens shade 92 in accordance with the shape of the protrusion 752 that protrudes inward from one end of the base member 70. As shown in FIG. 16, the base member 70 is provided with two protrusions 752, and the lens shade 92 is provided with two recesses 922 corresponding to the respective protrusions 752. The movement of the lens shade 92 relative to the base member 70 is restricted by the corresponding projections 752 of the base member 70 being fitted into the respective recesses 922. Further, on the outer periphery of the lens shade 92, portions other than the concave portion 922 are also formed in a shape conforming to the shape of one end of the base member 70, and the lens shade 92 rotates in the rotational direction with respect to the base member 70 at each portion As a result, the movement of the lens shade 92 relative to the base member 70 is restricted.

The outer periphery of the lens 91 is formed in a shape that matches the shape of one end of the base member 70. For example, a recess 911 is provided on the outer periphery of the lens 91 in accordance with the shape of the protrusion 752 that protrudes inward from one end of the base member 70. As shown in FIG. 15, the lens 91 is provided with two recesses 911 corresponding to the respective protrusions 752. The movement of the lens 91 relative to the base member 70 is restricted by the corresponding projections 752 of the base member 70 being fitted in the respective recesses 911. Further, two restricting pieces 912 extending in the radial direction are formed on the outer periphery of the lens 91, and the two restricting pieces 912 abut on one end of the base member 70 to move the lens 91 relative to the base member 70. Is regulated.

Here, with reference to FIG. 18, the installation (attachment) of the illumination device 4 and the aspect of the color visually recognized by the user by the coloring unit 83 will be described. FIG. 18 is a cross-sectional view showing a luminaire according to a second embodiment. In addition, sectional drawing of the illuminating device 4 shown in FIG. 18 is schematic which illustrates installation of the illuminating device 4, the illumination range of the illuminating device 4, etc. FIG.

In the example of FIG. 18, the coloring part 83 shows the case where it is an inner peripheral surface colored by the color which reflects the light of a predetermined wavelength by applying the coating material of a desired color. Specifically, in the example of FIG. 18, the case where the colored portion 83 is provided by applying a paint of a desired color to the surface of the inner peripheral wall 811 of the base 81, that is, the inner peripheral surface is shown. Further, in the example of FIG. 18, the light source unit 30 emits white light. Moreover, in the example of FIG. 18, the side which the light source part 30 (light emitting element 311) faces is demonstrated as downward. That is, the base member 70 side of the illuminating device 4 is referred to as the lower side, and the heat sink 20 side is described as the upper side.

First, installation of the illumination device 4 will be described. In the example of FIG. 18, the lighting device 4 is fixed to the embedded hole HL provided in the ceiling CL by the mounting member 25. Specifically, the lighting device 4 moves upward by the base member 70 being inserted into the embedding hole HL and the cover part 75 having an outer diameter larger than the embedding hole HL coming into contact with the ceiling CL from below. Is regulated. For example, the installer of the lighting device 4 inserts the lighting device 4 into the embedding hole HL from the heat sink 20 in a state where the mounting member 25 is pressed and narrowed. After the heat sink 20 is inserted into the embedding hole HL, the mounting member 25 expands to the original state by its own bias on the back side of the ceiling CL, and the mounting member 25 abuts on the ceiling CL, whereby the base member 70 is The illumination device 4 is installed in the ceiling CL by being fitted into the embedded hole HL.

As described above, the lighting device 4 is biased upward by the mounting member 25 connected to the heat sink 20, whereby the downward movement due to its own weight is restricted. Specifically, the lighting device 4 is biased upward by the support portion 263 of the spring portion 26 of the mounting member 25 pressing the ceiling CL downward. Thereby, the illuminating device 4 is fitted in the embedding hole HL provided in the ceiling CL, and is installed in the ceiling CL. Further, in the lighting device 4, the mounting member 25 is connected to the heat sink 20, whereby the mounting member 25 is positioned above the position of the embedded hole HL in the vertical direction. Therefore, compared with the case where the attachment member 25 is connected with the base member 70 etc., the illuminating device 4 can match the embedding hole HL with the size (outer diameter) of the base member 70, and improves the designability. Can.

Further, in the lighting device 4, the light emitted from the light emitting element 311 of the light source unit 30 is radiated to the outside of the lighting device 4 through the inside of the frame 10, the lens portion 90 and the base member 70. Specifically, the light emitted from the light emitting element 311 and the light reflected by the reflecting surface 13 of the frame 10 are controlled by the lens 91 of the lens unit 90, and the lens holder 80 disposed in the base member 70. The light passes through the inside and is emitted from the opening 751 of the cover 75 to the outside of the lighting device 4.

As shown in FIG. 18, the illumination device 4 is a downlight, and the diameter of the opening 751 of the cover 75 is formed to be substantially the same as the inner diameter of the lens holder 80. Therefore, the light distribution control of the lighting device 4 is performed so as to illuminate the area directly below the ceiling CL where the lighting device 4 is installed, as shown in the lighting range AR21.

Here, for example, in the conventional illumination device which is a downlight similar to the illumination device 4, the inner peripheral surface of the lens holder (light distribution member) reflects a mirror surface, that is, light. Therefore, in the conventional illumination device, the inner circumferential surface of the lens holder mirrors the inside as a mirror. Therefore, when the user looks at the lighting device from outside the illumination range of the conventional lighting device, the user sees the internal structure of the conventional lighting device. As described above, the internal structure of the illumination device reflected on the inner peripheral surface of the lens holder is visually recognized by the user who looks at the illumination device from outside the illumination range of the conventional illumination device, for example, in an oblique direction.

On the other hand, in the illumination device 4, the colored portion 83 is provided on the inner peripheral surface of the lens holder 80. Therefore, in the lighting device 4, the colored portion 83 provided on the inner peripheral surface of the lens holder 80 reflects light of a predetermined color. For example, when the colored portion 83 is red, in the illumination device 4, the colored portion 83 of the lens holder 80 reflects light of a wavelength (for example, 620 to 750 nm) corresponding to red. Therefore, when the user looks at the illumination device 4 from the outside of the illumination range AR 21 of the illumination device 4, the user recognizes the red light reflected by the colored portion 83 of the lens holder 80. In the example of FIG. 18, when the user looks at the illumination device 4 from the viewpoint VP <b> 21, the user recognizes the red light reflected by the colored portion 83 of the lens holder 80. For example, when white light is emitted from the light source unit 30 and the user looks at the illumination device 1 from the viewpoint VP21, the user emits red light reflected by the coloring unit 83 of the lens holder 80 from the light source unit 30 The color (eg, pink color) in which the white light is mixed is recognized.

As described above, in the lighting device 4, since the colored portion 83 provided on the inner peripheral surface of the lens holder 80 reflects predetermined light, desired light is given to the user located outside the lighting range AR 21 of the lighting device 4. It can be made visible. That is, the illumination device 4 emits a color (for example, white light) emitted from the light source unit 30 to the illumination range AR21 so that a user located outside the illumination range AR21 can recognize desired light. The light is emitted to the outside of the lighting device 4. Thereby, the user located in the illumination range AR21 visually recognizes the light (for example, white light) that illuminates the illumination range AR21, and the user located outside the illumination range AR21 is the desired light reflected by the coloring unit 83 Visualize. Therefore, the lighting device 4 can change the color recognized by the user according to the position of the lighting device 4. For example, the lighting device 4 can change the color recognized by the user according to the position where the user visually recognizes the lighting device 4 such as the viewpoint VP21. In addition, when the user looks at the illumination device 4 from outside the illumination range AR21, the illumination device 4 can suppress the user from visually recognizing the internal structure of the illumination device 4.

Note that the illumination device 4 which is a downlight is a direct light emitted from the light source unit 30 through the lens unit 90 to the outside of the illumination device 4 from the opening 751 of the cover 75 and a light reflected by the lens holder 80 Use As described above, the lighting device 4 uses more light reflected by the lens holder 80 than the lighting device 1. For example, the lighting device 4 uses the light reflected by the lens holder 80 more frequently than the lighting device 1.

In addition, as shown in FIG. 18, the opening 751 of the cover 75 according to the second embodiment is formed larger in diameter than the opening 451 of the cover 45 according to the first embodiment shown in FIG. 2. . In this case, the lighting device 4 using the base member 70 is more likely to cause glare due to direct visual recognition of the light emitting element 311 of the light source unit 30 or the like than the lighting device 1 using the base member 40. Therefore, the base member 70 according to the second embodiment is formed longer in the axial direction than the base member 40 according to the first embodiment. That is, the axial height of the base member 70 is formed higher than the axial height of the base member 40.

Thereby, the distance (first length) from the light emitting element 311 of the light source unit 30 in the lighting device 4 to the opening 751 of the cover 75 is the opening of the light emitting element 311 of the light source unit 30 in the lighting device 1 to the cover 45 It is longer than the distance (second length) to the part 451. Therefore, in the illumination device 4, the range in which the light source unit 30 is directly viewed from the opening 751 compared to the case where the distance from the light emitting element 311 of the light source unit 30 to the opening 751 of the cover 75 is the second length. Can be narrowed. That is, the illumination device 4 can make the light blocking angle larger than that of the illumination device 1. Thereby, the illuminating device 4 can suppress glare.

(Modification)
Moreover, the illumination device 1 and the illumination device 4 may adopt various configurations in order to cope with variations in light emitted from the light source unit 30 (the light emitting element 311). This point will be described below.

For example, since the present LED (light emitting element) has a large production variation and a variation in color temperature (chromaticity), the color temperature of the LED is selected to match the color temperature of the fixture (lighting device) or , Using a limited number of ranks of LEDs. In addition, there are cases where limited LEDs of multiple ranks can not be purchased by designating a rank, or variations may occur even if a rank is designated. When such an LED is mounted, for example, diagonal mounting based on the color temperature of the LED is performed, and if measures such as narrowing the range of variation are taken, cost and man-hours increase.

Therefore, in the lighting device 1 and the lighting device 4, the members such as the

lens units

60 and 90 are colored in accordance with the variation of the color temperature (chromaticity) of the light emitted by the light source unit 30. The light emitted by the device 4 may be matched to the desired color temperature.

For example, in the illumination device 1 and the illumination device 4, the light emitted by the illumination device 1 and the illumination device 4 by coloring the optical member according to the variation of the color temperature (chromaticity) of the light emitted by the light source unit 30 May be adjusted to the desired color temperature. For example, in the illumination device 1 and the illumination device 4, the illumination device 1 and the illumination device 4 emit radiation by coloring the

lenses

61 and 91 according to the variation in color temperature (chromaticity) of the light emitted by the light source unit 30. The desired light may be matched to the desired color temperature.

In addition, for example, in the illumination device 1 and the illumination device 4, the illumination device 1 and the illumination are colored by coloring a member for protecting the optical member according to the variation of the color temperature (chromaticity) of the light emitted by the light source unit 30. The light emitted by the device 4 may be matched to the desired color temperature. For example, in the illumination device 1 and the illumination device 4, the illumination device 1 and the illumination device 4 are colored by coloring the lens shades 62 and 92 according to the variation in color temperature (chromaticity) of light emitted by the light source unit 30. The emitted light may be matched to the desired color temperature. The above is only an example, and the light emitted from the lighting device 1 or 4 may be adjusted to a desired color temperature by coloring other members of the lighting device 1 or 4.

Further, as described above, the illumination unit 2 may be a light distribution member having different axial heights, like the base member 40 in the first embodiment and the base member 70 in the second embodiment. Is easily replaceable. Thus, the lighting unit 2 can also be used as a configuration of various types of lighting devices such as a spotlight (pinhole light) and a downlight.

In the first and second embodiments, the light source is not limited to the LED, and may be another light source such as a krypton ball, for example. Moreover, the illumination device in which the illumination unit is used is not limited to the spotlight (pinhole light) and the downlight as described above, and may be various types of illumination devices.

DESCRIPTION OF SYMBOLS 1 illumination apparatus, 2 illumination unit, 10 frame, 11 base, 12 locking part, 121 mounting part, 13 reflecting surface, 14 rotation control part, 140 insertion hole, 20 heat sink, 25 mounting member, 30 light source part, DESCRIPTION OF SYMBOLS 3 Light distribution unit, 40 base member, 41 notch groove, 411 bottom part, 412 extending part, 45 cover part, 50 lens holder (light distributing member), 53 coloring part, 60 lens part, 4 illuminating device, 5 light distribution Unit, 70 base member, 71 notch groove, 711 bottom portion, 712 extension portion, 75 cover portion, 80 lens holder (light distribution member), 83 colored portion, 90 lens portion

Claims

Light source,
A cylindrical light distribution member disposed on the light extraction direction side of the light source;
A colored portion provided along an inner circumferential surface of the light distribution member and colored to reflect light of a predetermined wavelength;
A lighting device equipped with
The lighting device according to claim 1, wherein the colored portion is a sheet member disposed along the inner circumferential surface.
The lighting device according to claim 1, wherein the colored portion is formed by applying a predetermined material to the inner circumferential surface.
The inner circumferential surface of the light distribution member is a surface that absorbs light,
The lighting device according to any one of claims 1 to 3, wherein the colored portion is provided so as to overlap the inner peripheral surface of the light distribution member.
The inner circumferential surface of the light distribution member is a surface that reflects light,
The lighting device according to any one of claims 1 to 3, wherein the colored portion is provided so as to overlap the inner peripheral surface of the light distribution member.
A heat sink disposed on the back side of the light source;
A mounting member fixed to the heat sink and used for mounting the lighting device;
The lighting device according to any one of claims 1 to 5, further comprising:
The lighting device according to claim 6, wherein the attachment member is a wound spring.
A frame in which an opening facing the light source is formed at one end, the light distribution member is disposed at the one end, and a heat sink is disposed at the other end;
A protrusion which protrudes from an outer peripheral wall of the frame, and is disposed on the outer peripheral wall of the frame so as to overlap a base member extending in the light extraction direction of the light source;
The lighting device according to any one of claims 1 to 7, further comprising:
The lighting device according to claim 8, wherein the frame is formed with a reflective surface facing the light extraction direction side of the light source.
The locking portion is disposed in an extension portion extending in one circumferential direction from a bottom portion of a notch groove provided at one end of the cylindrical base member into which the frame can be inserted. The lighting device according to claim 8, wherein the movement of the base member in the axial direction of the base member is restricted.
The locking portion is provided in a plurality along the outer periphery of the frame, and each locking portion is disposed in the extension portion of each of a plurality of notch grooves provided in the base member. The lighting device according to claim 10, wherein the base member is restricted from axial movement of the base member.
A lens disposed between the light source and the light distribution member;
And further
The illumination device according to any one of claims 1 to 11, wherein the light distribution member is a lens holder for supporting the lens.