JP2020119745A - Lighting device - Google Patents

Abstract

Kind Code: A1 To provide a lighting device capable of performing light distribution adjustment, facilitating compactness, and excellent in appearance. A lighting device includes a light source arranged in a housing, and a lens 30 arranged in the housing on the light emitting side of the light source, and is rotatable relative to a stationary part that is stationary with respect to the light source. and a rotating member 50 which is rotatable with respect to a stationary portion while maintaining substantially the same position in the optical axis direction. One of the optical block 70 and the rotary member 50 has a guide groove 46, and the other of the optical block 70 and the rotary member 50 is fitted into the guide groove 46 so that when the rotary member 50 rotates with respect to the stationary part, It has an engaging portion 66 whose position in the guide groove 46 varies. [Selection drawing] Fig. 3

Description

The present disclosure relates to a lighting device.

BACKGROUND ART Conventionally, as a lighting device, there is one described in Patent Document 1. This lighting device includes a base, a light source module, a first cylindrical member, a second cylindrical member, a lens holder, and a lens. The base constitutes the upper side of the housing and has a plurality of fins on the side opposite to the light emitting side. The light source module is fixed to the end surface (main surface) on the light emitting side of the base and emits light to the side opposite to the fin side in the optical axis direction. Further, the first cylindrical member is fixed to the base so as not to be movable relative to it, and the second cylindrical member is attached to the first cylindrical member so as to be relatively movable in the optical axis direction. When the second cylindrical member rotates with respect to the first cylindrical member, the height position with respect to the first cylindrical member changes. The lens holder constitutes the lower side of the housing of the lighting device, and is fixed to the outer side of the second cylindrical member in the radial direction so as not to be movable. The lens is fixed inside the lens holder so as not to move relative to it. The lens is located on the light emission side of the light source module in the optical axis direction. In this illumination device, the height position of the lens holder with respect to the light source module can be changed by rotating the first cylindrical member with respect to the second cylindrical member, so that the position of the lens in the optical axis direction with respect to the light source module is adjusted. it can. Therefore, the light distribution adjustment of the emitted light can be executed.

Japanese Patent No. 6159460

In the above illumination device, when the second cylindrical member is rotated with respect to the first cylindrical member in order to change the position of the lens with respect to the light source module in the optical axis direction, the end position of the second cylindrical member is changed to the end of the first cylindrical member. It will fluctuate so as to project from the part. Therefore, the dimension of the illuminating device in the optical axis direction fluctuates, so that the illuminating device is likely to become large and does not look good.

Therefore, an object of the present disclosure is to provide a lighting device that can perform light distribution adjustment, can easily be made compact, and is also excellent in aesthetics.

An illumination device according to an embodiment of the present disclosure includes a housing, a light source arranged in the housing, and a lens arranged on the light emission side of the light source in the housing, and is relative to a stationary portion that is stationary with respect to the light source. The optical block includes a rotatable optical block and a rotating member whose position in the optical axis direction is substantially unchanged and which is rotatable with respect to a stationary portion. One of the optical block and the rotating member has a guide groove, and the other of the optical block and the rotating member fits in the guide groove, and when the rotating member rotates with respect to the stationary portion, the existing position in the guide groove is changed. It has a changing engaging part.

According to the lighting device of the present disclosure, it is possible to perform light distribution adjustment, it is easy to realize compactness, and moreover, it is excellent in aesthetics.

It is a perspective view of the illuminating device concerning one embodiment of this indication. It is a bottom view of an illuminating device. It is an exploded perspective view of the main composition of a lighting installation. It is a perspective view which shows the light source module arrange|positioned at the base part of the base of an illuminating device. It is sectional drawing parallel to the optical axis direction in an illuminating device. It is an exploded perspective view of an optical block and a rotation member. It is an assembly perspective view of an optical block. It is an assembly perspective view of an optical block and a rotation member. It is a perspective view for explaining movement of an optical block with respect to a rotation member. It is a perspective view similar to FIG. 7 which shows the modification of a lens holder. It is a figure which shows the modification of the engaging part which engages with the guide groove of a lens holder.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. When a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that a new embodiment is constructed by appropriately combining the characteristic parts thereof. Further, in the following embodiments, the same reference numerals are given to the same components in the drawings, and duplicated description will be omitted. Further, in different drawings, the dimensional ratios such as the length, the width, and the height of each member do not necessarily match. In the drawings and the following description, the optical axis direction is the direction along the optical axis of the emitted light of the illuminating device, the radial direction is the radial direction orthogonal to the optical axis, and the circumferential direction is the circumference of the optical axis. In the circumferential direction. The optical axis direction also matches the extending direction of the central axis of the lens, and also matches the vertical direction and the height direction when the lighting device is installed on the ceiling and directed vertically downward. In the following description, the upper side refers to the side opposite to the light emitting side in the optical axis direction, and the lower side refers to the light emitting side in the optical axis direction. Further, among the components described below, the components not described in the independent claim indicating the highest concept are arbitrary components and are not essential components.

FIG. 1 is a perspective view of a lighting device 1 according to an embodiment of the present disclosure. In FIG. 1, the optical axis L of the emitted light of the illuminating device 1 is shown by the alternate long and short dash line. FIG. 2 is a bottom view of the lighting device 1. As shown in FIG. 1, the illuminating device 1 is an embedded universal downlight, which is embedded in a ceiling of a building such as a hall, and can change the optical axis direction of emitted light emitted downward.

The lighting device 1 includes a base 10. The base 10 constitutes the upper side of the housing of the lighting device 1 and has a bottomed cylindrical portion 11. The base 10 functions as a mounting base for mounting the light source 62 (see FIG. 4) in the bottomed cylindrical portion 11. The base 10 has a plurality of fins 12 projecting upward, and the whole base also functions as a heat sink for dissipating the heat generated by the light source 62. In particular, the fins 12 dissipate the heat from the light source 62 to the outside air. .. Therefore, the base 10 is preferably made of a material having a high thermal conductivity such as a metal material. The base 10 is formed by integrally molding the bottomed cylindrical portion 11 and the fin 12 with, for example, aluminum die casting. The base may have a structure in which the bottomed cylindrical portion and the fin are joined together. In this case, for example, the projection provided on the bottomed cylindrical portion may be inserted into the hole provided on the fin and then plastically deformed to connect the bottomed cylindrical portion to the fin, or the fin may be connected. May be fastened and fixed to the bottomed tubular portion with a screw. The base may not have fins.

The lighting device 1 further includes a spring mounting member 15, an optical axis adjusting member 17, and a frame body 20. Each of the spring mounting member 15, the optical axis adjusting member 17, and the frame body 20 is preferably formed of a metal material such as aluminum or a resin material such as polybutylene terephthalate. The base 10, the spring mounting member 15, the optical axis adjusting member 17, and the frame body 20 are integrated as shown below.

As shown in FIG. 1, the spring mounting member 15 includes an annular flat plate portion 15a and two spring mounting portions 15b, and the two spring mounting portions 15b are located at positions spaced in the circumferential direction of the annular flat plate portion 15a. It projects downward from the annular flat plate portion 15a. The frame body 20 is a tubular member that constitutes the lower side of the housing, and includes an annular disc-shaped upper end surface (not shown). Further, as shown in FIGS. 1 and 2, the optical axis adjusting member 17 includes an annular flat plate portion 17a, an upper base fixing portion 17b, and a lower base fixing portion 17c, and the upper base fixing portion 17b is While protruding upward from the annular flat plate portion 17a, the lower base fixing portion 17c projects downward from the annular flat plate portion 17a.

With reference to FIG. 1, the annular flat plate portion 15 a of the optical axis adjusting member 17 is sandwiched between the annular flat plate portion 15 a of the spring mounting member 15 and the upper end surface of the frame body 20. It is fixed to the upper end surface of the with screws 27. By this fixing, the spring mounting member 15, the optical axis adjusting member 17, and the frame body 20 are integrated. The upper base fixing portion 17b has a long hole 17d, and the lower base fixing portion 17c has a screw insertion hole. The base 10 is screwed to the frame 20 using the elongated holes 17d of the upper base fixing portion 17b and the screw insertion holes of the lower base fixing portion 17c with respect to the frame 20.

As shown in FIG. 1, in a state where the extending direction of the central axis of the frame body 20 is substantially aligned with the optical axis direction, the base 10 is fastened to the central portion of the long hole 17d on the paper surface with the screw 21. There is. The base 10 inclines with respect to the frame body 20 as the tightening position by the screw 21 moves to the left side or the right side of the long hole 17d on the paper surface. Thereby, the optical axis direction of the illuminating device 1 can be oriented in a state of being inclined at a desired angle with respect to the central axis direction of the frame body 20 along the vertical direction, for example.

The lighting device 1 further includes two mounting springs 23. The two mounting springs 23 are arranged outside the frame so as to face each other in the radial direction of the frame 20 with the central axis interposed therebetween, and each mounting spring 23 is fixed to the spring mounting portion 15b. The mounting spring 23 is formed of, for example, a metal plate having a bent portion and has a leaf spring structure. The mounting spring 23 is distorted so that the mounting spring 23 abuts around the embedded hole in the ceiling. As a result, the lighting device 1 is fixed to the inner surface of the embedded hole in the ceiling by the mounting spring 23.

Since the spring attachment portion 15b is attached to the frame body 20, it is stationary with respect to the frame body 20 and also with respect to the embedded hole in the ceiling. Therefore, since the frame body 20 stands still with respect to the embedding hole, it is possible to tilt the base 10 whose tilt angle can be adjusted with respect to the frame body 20 with respect to the ceiling by a desired angle. Therefore, since the optical axis L of the emitted light emitted from the light source 62 (see FIG. 4) fixed to the base 10 can be tilted by a desired angle with respect to the vertical direction, the degree of freedom of the irradiation area is significantly increased. Can be very expensive. Note that three or more mounting springs may be provided. The structure for mounting the lighting device on the ceiling may be any structure as long as the lighting device can be fixed to the ceiling, and the mounting spring may not be included.

The illumination device 1 can change the position of the lens in the optical axis direction with respect to the light source, and can adjust the distribution of the emitted light. Next, this will be described. FIG. 3 is an exploded perspective view of the main configuration of the lighting device 1. In FIG. 3, illustration of the frame body 20, the mounting spring 23, and the like is omitted. Further, FIG. 4 is a perspective view showing the light source module 60 arranged on the pedestal portion 24 of the base 10, and FIG. 5 is a sectional view parallel to the optical axis direction of the lighting device 1.

As shown in FIG. 3, the lighting device 1 includes a lens 30, a lens holder 40, a rotating member 50, and a light source module 60 in addition to the base 10 and the frame 20. The light source module 60 is fixed to the pedestal portion 24 corresponding to the bottom of the bottomed cylindrical portion 11 of the base 10 with screws 63, and has a substrate 61 and a light source 62. The substrate 61 has a substantially rectangular shape in a plan view, and the light source 62 has a disk shape, and is arranged substantially at the center of the lower surface (mounting surface) of the substrate 61. The light source module 60 has, for example, a COB (Chip On Board) structure, and the light source 62 includes a plurality of LEDs (light emitting diodes) mounted on the substrate 61 and a sealing member that seals the plurality of LEDs. ..

The substrate 61 is composed of, for example, a ceramic substrate, a resin substrate, a metal base substrate, or the like. On the substrate 61, a pair of electrode terminals 64a and 64b and a metal wiring (not shown) having a predetermined pattern are formed. The pair of electrode terminals 64a and 64b are provided to receive DC power for causing the LED of the light source 62 to emit light from the outside. Further, the metal wiring having a predetermined pattern is provided to electrically connect the LEDs to each other.

The LED is an example of a light emitting element. The LED is, for example, a bare chip that emits visible light of a single color, and a blue LED chip that emits blue light when energized. The plurality of LEDs are arranged on the substrate 61 in a matrix, for example. Note that only one LED may be mounted on the board. The sealing member is made of, for example, a translucent resin and contains a phosphor. The phosphor plays a role of converting the wavelength of the light from the LED. The sealing member is made of, for example, a phosphor-containing resin in which phosphor particles are dispersed in silicone resin. When the light source module 60 emits white light and the LED is a blue LED chip that emits blue light, the phosphor particles are composed of, for example, a YAG-based yellow phosphor.

The sealing member may be, for example, all LEDs may be collectively sealed, a plurality of LEDs may be linearly sealed in each row, or each LED may be individually sealed one by one. Good. Further, the light source may be composed of a light emitting element other than the LED, and may be composed of a semiconductor laser element, a solid state light emitting element such as an organic EL (Electro Luminescence) element or an inorganic EL element. Alternatively, the light source may be an incandescent lamp or a fluorescent lamp.

As shown in FIG. 4, the substrate 61 is fixed to the substrate holder 65. The substrate holder 65 has a substantially rectangular outer shape in a plan view, and is preferably made of, for example, a resin member. The substrate 61 is fixed to the substrate holder 65 by adhesion, sandwiching or the like, and the substrate holder 65 is fixed to the pedestal portion 24 of the base 10 by screws 63.

Further, as shown in FIGS. 3 and 4, the substrate holder 65 is provided with an engaging portion 66. In this embodiment, the two engaging portions 66 are integrally formed with the substrate holder 65. The substrate holder 65 has a rectangular shape in a plan view, and is formed in the central portion of each of the two short side edge portions. The engaging portion 66 is formed as a claw-shaped portion having a substantially L-shaped side surface shape when viewed in a direction orthogonal to the optical axis direction. More specifically, the engaging portion 66 has a shape that protrudes from the surface of the substrate holder 65 toward the light emitting side and has its tip bent outward in the direction orthogonal to the optical axis direction. The tip of the engaging portion 66 is fitted into and engaged with a guide groove of the lens holder 40 described later. Since the substrate holder 65 is a stationary portion fixed to the base 10, the engaging portion 66 of the substrate holder 65 also constitutes a stationary portion that is stationary with respect to the light source 62 fixed to the base 10.

With reference to FIG. 5, the lens 30 is arranged on the light emission side of the light source module 60 with respect to the optical axis direction. More precisely, the end surface 35 of the lens 30 on the light incident side in the optical axis direction is located on the light emitting side in the optical axis direction with respect to the light source 62. The lens holder 40 is arranged so as to surround the lens 30, and the rotating member 50 is arranged so as to surround the lens holder 40.

FIG. 6 is an exploded perspective view of the optical block 70 and the rotating member 50. FIG. 7 is an assembled perspective view of the optical block 70. FIG. 8 is an assembled perspective view of the optical block 70 and the rotating member 50.

As shown in FIG. 5, the lighting device 1 includes an optical block 70. As shown in FIGS. 6 and 7, the optical block 70 includes a lens 30 and a lens holder 40 that holds the lens 30.

The lens 30 is made of a translucent material having translucency, and is preferably made of a transparent resin material such as acrylic, polycarbonate, or silicone, or a glass material. The lens 30 has a concave portion 31 including a cylindrical space at the center of the upper portion, an outer peripheral surface 32 that is divergent in a frustoconical shape from the upper end portion to the lower end portion, and a flange portion 33 that projects radially outward at the lower end portion of the outer peripheral surface 32. Have and. Plural (three in the present embodiment, two of which are shown in FIG. 6) fitting portions 34 are formed in the flange portion 33 at intervals in the circumferential direction so as to be concave inward in the radial direction. Further, the fitting portion 34 is formed with a cutout portion 36 that extends radially inward.

As shown in FIG. 6, the lens holder 40 is an annular member and is arranged so as to surround the lens 30. The lens holder 40 is preferably formed of a metal material such as aluminum or a resin material such as polybutylene terephthalate. The lens holder 40 has a frustoconical outer peripheral surface 41 that extends along the radially outer side of the outer peripheral surface 32 of the lens 30. A plurality of (three in the present embodiment) fitting protrusions 42 are formed at the lower end of the outer peripheral surface 41 at intervals in the circumferential direction so as to project in the optical axis direction. A locking protrusion 43 is formed on the radially inner surface of the fitting protrusion 42. When the lens holder 40 is assembled to the lens 30, the locking projections 43 are fitted into the cutout portions 36 formed in the fitting portion 34 of the lens 30 so that the lens 30 moves from the lens holder 40 in the optical axis direction. Serves the function of holding it in place.

In addition, a guide protrusion 44 having a rectangular shape in a side view is formed so as to project on the radially outer surface of each fitting convex portion 42 of the lens holder 40. The guide protrusion 44 fits into a cutout portion of the rotating member 50 described later and moves in the cutout portion to guide the lens holder 40 to move along the axial direction of the rotating member 50.

Further, the lens holder 40 has two arc-shaped wall portions 45 protruding upward from the upper end surface of the outer peripheral surface 41. The two arcuate wall portions 45 are provided so as to face each other in the radial direction of the lens holder 40. A guide groove 46 is formed in each arc-shaped wall portion 45. The guide groove 46 extends in a direction inclined with respect to a plane orthogonal to the optical axis direction. Each of the guide grooves 46 formed in the two arc-shaped wall portions 45 is formed in a shape having the same height position at positions facing each other in the radial direction.

The rotating member 50 is a substantially cylindrical member, and is preferably formed of a resin material such as polybutylene terephthalate. The rotating member 50 has an upper end cylinder portion 51, an intermediate cylinder portion 52, and a grip portion 53 in order from the upper side. The upper end cylinder portion 51 is formed with three notches 54 extending in the optical axis direction at intervals in the circumferential direction. The notch 54 is open upward, and the guide protrusion 44 of the lens holder can be received through the opening. The notch 54 may be a plurality of two or four or more.

The inner diameter of the upper end cylinder portion 51 is formed larger than the maximum diameter of the outer peripheral surface 41 of the lens holder 40. Thereby, the lens holder 40 holding the lens 30 can be moved in the optical axis direction within the upper end cylinder portion 51.

The outer diameter of the middle tubular portion 52 is smaller than that of the upper end tubular portion 51. Therefore, a step portion 55 having an annular shape when viewed from below is formed between the upper end tubular portion 51 and the intermediate tubular portion 52. When the rotating member 50 is arranged in the bottomed cylindrical portion 11 of the base 10, the step portion 55 is engageable with the annular protrusion 13a formed on the inner peripheral surface of the bottomed cylindrical portion 11. And serves to prevent the rotary member 50 from falling off the base 10.

The grip portion 53 is an annular portion that projects radially outward from the lower end portion of the intermediate tubular portion 52. An uneven shape is formed on the surface of the grip portion 53 over the entire circumference in the circumferential direction, which makes it easy for a person to grip the grip portion 53 by hand and rotate the rotating member 50.

A plurality of (four in this embodiment) locking projections 56 are formed at intervals in the circumferential direction near the lower end of the intermediate tubular portion 52. The locking protrusion 56 is formed as a trapezoidal protrusion when viewed from the circumferential direction. A gap is formed between the lower end surface of the locking projection 56 and the upper end surface of the grip portion 53. As shown in FIG. 5, when the rotating member 50 is arranged in the bottomed cylindrical portion 11 of the base 10, the gap is formed so as to project radially inward at the lower end of the bottomed cylindrical portion 11. The flange portion 13b is inserted and arranged. This serves to prevent the rotary member 50 from falling off the base 10, and allows the rotary member 50 to rotate with respect to the base 10 without substantially changing the position in the optical axis direction.

As shown in FIG. 7, the lens holder 40 is attached to the lens 30 so as to be covered from above, and the optical block 70 is assembled. In this state, the locking protrusions 43 (see FIG. 6) formed on the fitting protrusions 42 of the lens holder 40 fit into the notches 36 (see FIG. 6) in the fitting portion 34 of the lens 30. As a result, the lens 30 is held so as not to come off from the lens holder 40 in the optical axis direction.

The optical block 70 thus assembled is assembled in a state of being inserted into the upper end cylinder portion 51 of the rotating member 50, as shown in FIG. At this time, since the maximum diameter portion of the lens holder 40 forming the optical block 70 is smaller than the inner diameter of the upper end cylinder portion 51, the optical block 70 and the rotating member 50 can relatively move in the optical axis direction. Further, when the relative movement is performed in this manner, the guide protrusion 44 of the lens holder 40 fits into the cutout portion 54 of the rotating member 50 and moves in the cutout portion 54, so that the optical block 70 is moved within the rotating member 50. It can be moved stably along the direction.

Next, with reference to FIG. 9, light distribution adjustment in the illumination device 1 will be described. FIG. 9 is a perspective view for explaining the movement of the optical block 70 with respect to the rotating member 50.

With the lighting device 1 assembled, the substrate holder 65 of the light source module 60 is fixed to the pedestal portion 24 of the base 10, and the rotating member 50 is attached to the bottomed cylindrical portion 11 of the base 10. Although it is rotatable, it is arranged immovably in the optical axis direction. Further, the engaging portion 66 of the substrate holder 65 is fitted and engaged with one end side in the circumferential direction of the guide groove 46 formed in the arc-shaped wall portion 45 of the lens holder 40.

In this state, as shown in FIG. 9, when a person grips the grip portion 53 and rotates the rotating member 50 to one side in the circumferential direction indicated by the arrow R1, the engaging portion 66 of the substrate holder 65 follows the guide groove 46. The lens holder 40 moves in the direction of arrow Z1, that is, the lens 30 moves toward the light source module 60. As a result, the light distribution angle of the emitted light emitted from the illumination device 1 is increased, and the illumination range is widened. On the contrary, in a state in which the engaging portion 66 of the substrate holder 65 is located in the intermediate region or the other end side in the circumferential direction of the guide groove 46, a person holds the rotating member 50 by grasping the holding portion 53 and moves the rotating member 50 to the arrow R2. When the lens holder 40 is rotated to the other side in the circumferential direction indicated by, the engaging portion 66 of the substrate holder 65 moves along the guide groove 46, whereby the lens holder 40 moves in the arrow Z2 direction, that is, the direction in which the lens 30 moves away from the light source module 60. Move to. As a result, the light distribution angle of the emitted light emitted from the illuminating device 1 becomes smaller and the illumination range becomes narrower.

When the light distribution is adjusted in the illumination device 1 as described above, the position of the rotary member 50 with respect to the base 10 in the optical axis direction does not change, and the rotary member 50 is assembled to the base 10 and the bottomed cylindrical portion 11 is provided. Does not project further from the end of the.

Note that, in the above, an example in which the engaging portion 66 is provided in the substrate holder 65 serving as the stationary portion and the guide groove 46 is provided in the lens holder 40 of the light source module 60 serving as the moving portion has been described, but the present invention is not limited thereto. Not a thing. On the contrary, a guide groove may be provided in the substrate holder 65 or the base 10 that serves as a stationary portion, and an engaging portion may be provided in the light source module 60 that serves as a moving portion.

As described above, the illumination device 1 of the present embodiment includes the base 10, the light source 62 arranged in the base 10, and the lens 30 arranged in the base 10 on the light emitting side of the light source 62. An optical block 70 capable of relative rotation with respect to a stationary portion that is stationary with respect to the light source 62, and a rotating member 50 that is rotatable with respect to the stationary portion with its position in the optical axis direction substantially unchanged. .. One of the optical block 70 and the rotating member has a guide groove 46, and the other of the optical block 70 and the rotating member 50 fits into the guide groove 46 and guides when the rotating member 50 rotates with respect to a stationary portion. It has an engaging portion whose position in the groove 46 varies.

According to this configuration, since the light distribution adjustment can be performed and the rotating member 50 does not project from the base 10, it is possible to easily realize compactness and provide an illuminating device having an excellent appearance.

In the case of a universal illumination device in which the optical axis direction can be changed with respect to the height direction of the frame body, as in the prior art, a base on which the lens is fixed when the position of the lens in the optical axis direction is changed. It is assumed that a configuration in which the length in the optical axis direction fluctuates is adopted. Then, when the optical axis direction is largely inclined with respect to the height direction of the frame body and the length of the base becomes long, the base easily interferes with the frame, so avoid this. Therefore, it is necessary to increase the size of the frame body, and the lighting device is likely to be particularly large. However, in the case of the technology of the present disclosure, even if the illuminating device 1 is a universal type, when the position of the lens 30 in the optical axis direction is changed, the lens 30 simply moves within the rotating member 50, and the illuminating device 1 The appearance (dimensions) does not change at all. Therefore, when the illuminating device 1 is of a universal type, one of the operational effects of the technique of the present application that the illuminating device 1 is easily made compact becomes particularly remarkable.

In the lighting device 1 of this embodiment, the guide groove 46 is provided in the lens holder 40 of the optical block 70. According to this structure, there is an advantage that the manufacturing is easier than in the case where the guide groove 46 is provided on the base 10 which is a stationary portion.

Further, in the illumination device 1 of the present embodiment, the guide groove 46 is inclined with respect to the plane orthogonal to the optical axis direction. As a result, it is possible to easily and reliably convert the rotational movement of the rotating member 50 in the circumferential direction into the movement movement of the light source module 60 in the optical axis direction.

Further, in the illumination device 1 of the present embodiment, the optical block 70 has the lens holder 40 that holds the lens 30, and the guide groove 46 is provided in the lens holder 40. According to this configuration, there is an advantage that the manufacturing is easier than in the case where the guide groove 46 is provided in the lens 30 or the base 10 that is the stationary portion.

Further, in the illumination device 1 of the present embodiment, the optical block 70 has the guide protrusion 44 that projects radially outward on the outer peripheral portion, and the rotating member 50 has the notch portion 54 that extends in the optical axis direction. When the block 70 moves in the optical axis direction with respect to the rotating member 50, the guide protrusion 44 moves along the cutout portion 54 while being fitted in the cutout portion 54. With this configuration, the optical block 70 can be stably moved in the rotating member 50 along the optical axis direction.

Further, in the illumination device 1 of the present embodiment, the housing includes the base 10 to which the light source 62 is fixed, and the frame body 20 arranged on the light emitting side of the base body 10, and the frame body 20 in the height direction. The tilt angle in the optical axis direction with respect to may be variable. According to this configuration, the light emission direction can be changed by changing the inclination angle in the optical axis direction, and the illumination direction by the illumination device 1 can be easily changed.

FIG. 10 is a perspective view similar to FIG. 7 showing a modified example of the lens holder. As shown in FIG. 10, the lens holder 40A has two arc-shaped wall portions 45a, and guide grooves 46 are formed in each of the arc-shaped wall portions 45a. It is not inclined with respect to the orthogonal planes, but is formed so as to extend along the circumferential direction. The other configuration is the same as that of the lens holder 40 described above. In this case, even if the rotating member 50 is rotated with the engaging portion 66 of the substrate holder 65 engaged with the guide groove 46, the position of the light source module 60 including the lens 30 and the lens holder 40A in the optical axis direction does not change. , The rotational position of the lens 30 only changes. In this case, by using a lens having a prism performance as the lens, it is possible to change the light emitting direction or the illumination direction by rotating the lens.

FIG. 11 is a view showing a modified example of the engaging portion that engages with the guide groove 46 of the lens holder 40. Although the example in which the engaging portion 66 that fits into the guide groove 46 of the lens holder 40 is provided in the substrate holder 65 of the light source module 60 has been described above, the invention is not limited to this. For example, as shown in FIG. 11, an engaging member 66A may be attached to the bottomed cylindrical portion 11 of the base 10 penetrating from the outside to engage with the guide groove 46 of the lens holder 40, or The engaging portion projecting from the inner surface of the bottom cylindrical portion 11 may be formed integrally with the base 10 and engaged with the guide groove 46 of the lens holder 40.

It should be noted that the present disclosure is not limited to the above-described embodiments and modifications thereof, and various improvements and changes can be made within the scope of the matters described in the claims of the present application.

For example, the case where the optical block 70 is composed of the lens holder 40 and the lens 30 has been described above. However, the optical block may be composed of only lenses.

Moreover, the case where the guide groove 46 penetrates the arc-shaped wall portion 45 in the thickness direction has been described. However, the guide groove does not have to penetrate the wall portion of the optical block in the thickness direction, and may have a shape formed by a pair of side wall portions and a bottom portion.

Further, a case has been described in which the lighting device 1 has a configuration in which the tilt angle of the optical axis direction with respect to the height direction of the frame body 20 can be changed, and the lighting device 1 is a so-called universal downlight. However, the illumination device may have a configuration in which the tilt angle of the optical axis direction with respect to the vertical direction cannot be adjusted, and need not be a universal illumination device.

Furthermore, although downlights and spotlights have a wide variety of structures, the technology of the present disclosure may be based on any of these various downlights and spotlights. Further, although the case where the lighting device 1 is the embedded downlight has been described, the lighting device may be a type that is hung on a rail or a type that is hung on a ceiling.

DESCRIPTION OF SYMBOLS 1 illuminating device, 10 base (housing), 11 bottomed cylindrical part, 12 fins, 13a annular projection part, 13b, 33 flange part, 15 spring mounting member, 15a annular flat plate part, 15b spring mounting part, 17 Optical axis adjusting member, 17a annular flat plate portion, 17b upper base fixing portion, 17c lower base fixing portion, 17d long hole, 20 frame body, 21,63 screw, 23 mounting spring, 24 pedestal portion, 30 lens, 31 concave part, 32, 41 outer peripheral surface, 34 fitting part, 35 end face, 36 cutout part, 40, 40A lens holder, 42 fitting convex part, 43 locking projection, 44 guide projection (projecting part), 45, 45a circle Arc-shaped wall portion, 46 guide groove, 50 rotating member, 51 upper end tubular portion, 52 intermediate tubular portion, 53 gripping portion, 54 cutout portion, 55 step portion, 56 locking protrusion, 60 light source module, 61 substrate, 62 light source, 64a , 64b electrode terminal, 65 substrate holder, 66 engaging portion, 66A engaging member, 70 optical block, L optical axis.

Claims (6)

A housing,
A light source arranged in the housing,
An optical block that includes a lens disposed on the light emission side of the light source in the housing, and is rotatable relative to a stationary portion that is stationary with respect to the light source;
A position that does not change substantially in the direction of the optical axis and is rotatable with respect to the stationary portion,
One of the optical block and the rotating member has a guide groove,
The other of the optical block and the rotating member has an engaging portion that fits in the guide groove and whose position in the guide groove changes when the rotating member rotates with respect to the stationary portion. .. The lighting device according to claim 1, wherein the guide groove is provided in the optical block. The illumination device according to claim 1, wherein the guide groove is inclined with respect to a plane orthogonal to the optical axis direction. The optical block has a lens holder for holding the lens,
The illumination device according to claim 1, wherein the guide groove is provided in the lens holder. The optical block has a protruding portion that protrudes outward in the radial direction on the outer peripheral portion, the rotating member has a notch portion that extends in the optical axis direction, and the optical block has an optical axis direction with respect to the rotating member. The illumination device according to any one of claims 1 to 4, wherein the protrusion moves into the notch when moving to the position along the notch. The housing includes a base to which the light source is fixed, and a frame body arranged on the light emitting side of the base,
The lighting device according to claim 1, wherein an inclination angle of the optical axis direction with respect to a height direction of the frame body is variable.

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