JP7236651B2 - lighting equipment - Google Patents

Description

The present disclosure relates to lighting devices.

2. Description of the Related Art Conventionally, there is one described in Patent Document 1 as a lighting device. This lighting device includes a housing including a tubular portion, a light source arranged in the housing, and a cylindrical reflecting member screwed to the light exit side of the housing.

JP 2016-207369 A

In the lighting device described above, since the reflective member is screwed, it is necessary to accurately align the reflective member with respect to the housing and to hold the housing and the reflective member in the aligned state. Hateful. Furthermore, some lighting devices change light distribution by rotating a lens with respect to a housing. In the case of such a structure, for example, grooves extending in the circumferential direction are provided on the inner peripheral surface of the housing, and protrusions projecting radially outward are provided on the outer peripheral side of the lens holder that holds the lens. Then, the protrusion is accommodated in the groove, and the protrusion moves in the groove in the circumferential direction, thereby moving the lens holder in the circumferential direction with respect to the housing. In such a structure, it is necessary to divide the housing in order to accommodate the protrusions in the grooves, and to form the housing, it is necessary to integrate a plurality of members by screwing or the like. Therefore, when a member that rotates relative to the housing is fixed to the housing, it is particularly difficult to perform construction work smoothly, and it is difficult to achieve a good appearance.

Accordingly, an object of the present disclosure is to provide a lighting device that facilitates smooth holding of the tubular structure in the housing, facilitates prevention of the tubular structure from coming off, and improves workability.

In order to solve the above problems, a lighting device according to the present disclosure includes a housing including an inner peripheral surface having a concave portion, a light source arranged in the housing, a cylindrical portion, and an elastically deformable radial direction. a cylindrical structure having at least one projecting portion projecting radially outward from the cylindrical portion and fitted into the recess, at least a part of which is accommodated in the housing.

According to the lighting device according to the present disclosure, the cylindrical structure can be easily held by the housing, the falling off of the cylindrical structure can be easily prevented, and workability can be improved.

1 is a perspective view of a lighting device according to an embodiment of the present disclosure; FIG. It is an exploded perspective view of the main part of the main-body part of the said illuminating device. It is a perspective view when the housing|casing of the said illuminating device is seen from a light-projection side. 4 is a perspective view of a light source assembly of the lighting device; FIG. FIG. 4 is a perspective view showing a state in which a fixed lens and a lens mounting member are removed from the light source assembly, and a perspective view showing a state in which the light source is visible; Fig. 3 is a perspective view of a moving lens assembly of the lighting device; FIG. 4 is an exploded perspective view of the main parts of the moving lens assembly; It is an exploded perspective view of the optical block of the said illumination device, and is an enlarged perspective view which shows a lens holder and a moving lens. It is a perspective view of a tube structure. It is a top view of the ring member of the said illuminating device. FIG. 3 is a perspective view showing the end portion of the housing on the light exit side; FIG. 4 is a cross-sectional view of part of the end portion of the housing on the light emission side; It is a figure explaining fitting of a cylindrical structure with respect to a housing|casing. It is a schematic cross-sectional view of part of the lighting device. It is a perspective view of the cylindrical member of a modification. It is a figure explaining fitting of the cylindrical structure of a modification with respect to a housing|casing.

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that the characteristic portions thereof will be appropriately combined to construct a new embodiment. Further, in the following embodiments, the same reference numerals are given to the same configurations in the drawings, and redundant explanations are omitted. In addition, a plurality of drawings include schematic diagrams, and the dimensional ratios of length, width, height, etc. of each member do not necessarily match between different drawings. Also, in the drawings and the following description, the R direction is the radial direction of the housing 30 and coincides with the radial direction of the movable lens 63 (see FIG. 8). The θ direction is the circumferential direction of the housing 30 and coincides with the radial direction of the movable lens 63 . The Z direction is the direction of the optical axis, which coincides with the height direction of the housing 30 and also coincides with the extending direction of the central axis of the movable lens 63 . The R direction, θ direction, and Z direction are orthogonal to each other. Further, in the following description, the side opposite to the light emission side in the optical axis direction is simply referred to as the side opposite to the light emission side, and the light emission side in the optical axis direction is simply referred to as the light emission side. The optical axis direction may coincide with the vertical direction, but does not necessarily have to coincide with the vertical direction. In addition, the inclined groove described below has a structure having a pair of inner wall surfaces that are inclined with respect to the Z direction and face each other, and at least a part of the fitting portion positioned between the pair of inner wall surfaces is a pair of grooves. It is defined as a structure that allows the fitting portion to move along the extending direction of the pair of inner wall surfaces by being guided by the inner wall surfaces of the pair of inner wall surfaces. Therefore, although the inclined groove may have a structure with a bottom, it has a structure of a through-hole having an elongated elongated hole shape inclined with respect to the optical axis direction, like the inclined groove 64c described below. It may penetrate through the side wall of the block (lens assembly) in the thickness direction. In addition, among the constituent elements described below, constituent elements that are not described in independent claims indicating the highest concept are optional constituent elements and are not essential constituent elements.

FIG. 1 is a perspective view of a lighting device 1 according to one embodiment of the present disclosure. The illumination device 1 is a so-called spotlight, and includes a power source section 5 that also serves as a mounting section, a support section 10 and a main body section 15 . The power supply unit 5 is attached to a wiring duct (not shown). The power supply unit 5 has a housing 6 and a power supply circuit (not shown) housed in the housing 6 . AC power from an external power supply such as a commercial power supply is supplied to the power supply circuit through a wiring duct. The power supply circuit converts the AC power into DC power by, for example, rectifying or smoothing the supplied AC power, and supplies the converted DC power to the light source described later. Further, although not described in detail, the support portion 10 is attached to, for example, one side end portion in the longitudinal direction of the elongated accommodation portion 6 and extends in a direction substantially perpendicular to the longitudinal direction. The body portion 15 incorporates a light source 43 (see FIG. 5). The body portion 15 is attached to the support portion 10 so that the optical axis direction of the light emitted from the light source 43 can be changed.

Note that the lighting device of the present disclosure is not limited to a spotlight, and may be any lamp, such as a downlight. Therefore, the mounting portion does not have to have a substantially rectangular parallelepiped elongated shape as shown in FIG. The attachment part may have any shape as long as it is a structure that can be attached to a building or the like.

FIG. 2 is an exploded perspective view of the main portion 20 of the main body portion 15. As shown in FIG. As shown in FIG. 2, the main section 20 includes a housing 30, a light source assembly 40, a moving lens assembly 60, and a hood 95. As shown in FIG. The light source assembly 40 is screwed into the housing 30 and the moving lens assembly 60 is rotatably mounted on the housing 30 . The hood 95 is a cylindrical member and is locked to the movable lens assembly 60 using a spring member (not shown). The hood 95 plays a role such as limiting the irradiation area of the emitted light. Hereinafter, the structures of the light source assembly 40 and the moving lens assembly 60 and the method of mounting them will be described in detail, and the method of mounting the hood 95 will be briefly described.

FIG. 3 is a perspective view of the housing 30 viewed from the light exit side. As shown in FIG. 3, the housing 30 has a cylindrical portion 31 that is open on the light output side, and includes a substrate contact portion 33 on its main surface 32 (end surface on the light output side). A light source assembly 40 (see FIG. 2) is fixed to the main surface 32 . 4 is a perspective view of the light source assembly 40. FIG. 5 is a perspective view showing a state in which the fixed lens 48 and the lens mounting member 50 are removed from the light source assembly 40, and is a perspective view showing a state in which the light source 43 is visible.

As shown in FIG. 4, the light source assembly 40 includes a light source module 41, a substrate holder 45, a fixed lens 48, and a lens mounting member 50. As shown in FIG. The light source module 41 has a substrate 42 which is substantially rectangular in plan view, and the substrate holder 45 has a substrate fixing recess having an opening having a shape corresponding to the shape of the substrate 42 in plan view on the light output side. As shown in FIG. 5 , the light source module 41 has a substrate 42 and a light source 43 . The substrate 42 has a substantially rectangular shape in plan view, and the light source 43 has a disk-like shape and is arranged substantially in the center of the mounting surface of the substrate 42 .

For example, the light source module 41 is inserted into the substrate fixing recess 46 from the light emitting side so that the light source 43 is positioned on the light emitting side. Thereafter, referring to FIG. 4, fixed lens 48 is arranged so that body portion 48a thereof covers the light emitting side of light source 43, and then fixed lens 48 is attached to lens mounting member 50 having annular portion 50a and mounting portion 50b. position relative to Thereafter, the fixed lens 48 is also positioned with respect to the lens positioning portion (not shown) of the substrate holder 45, and the mounting portion 50b of the lens mounting member 50 is locked to the locking portion 45a extending toward the light emitting side of the substrate holder 45. to fix it. Upon fixing, the light source module 41 , the substrate holder 45 , the fixed lens 48 and the lens mounting member 50 are integrally integrated to form the light source assembly 40 .

The light source assembly 40 is fixed to the main surface 32 using the screw hole 55 thereof and the screw hole 35 (see FIG. 3) provided in the main surface 32 of the housing 30 and is arranged in the cylindrical portion 31 . This fixation is performed by tightening bolts in the threaded hole of the substrate holding member (not shown), the threaded hole 55 of the light source assembly 40, and the threaded hole 35 of the main surface 32 in that order. The substrate holding member presses a part of the periphery of the surface of the substrate 42 on the light emitting side to the side opposite to the light emitting side. In a state where the light source assembly 40 is fixed to the main surface 32, the surface of the substrate 42 opposite to the light emitting side comes into contact with the substrate contact portion 33 (see FIG. 3), so that the heat generated by the light source 43 is removed. Efficient heat transfer.

The fixed lens 48 is preferably made of a transparent resin material such as acrylic, polycarbonate, or silicone, or a glass material, and more preferably made of a translucent material with high heat resistance, such as silicone material or glass. The fixed lens 48 suppresses the spread of the emitted light emitted from the light source 43 in the radial direction. It is provided in order to suppress the drop-out phenomenon, that is, the phenomenon that the central position of the emitted light becomes dark. Note that the fixed lens 48 and the lens mounting member 50 may not exist.

Next, with reference to FIG. 5, the light source module 41 will be described in more detail. The light source module 41 has, for example, a COB (Chip On Board) structure, and the light source 43 includes a plurality of LEDs (light emitting diodes) mounted on the substrate 42 and a sealing member that seals the plurality of LEDs. .

The substrate 42 is composed of, for example, a ceramic substrate, a resin substrate, or a metal base substrate. Although not described in detail, the substrate 42 is formed with a pair of electrode terminals and a predetermined pattern of metal wiring. A pair of electrode terminals is provided for externally receiving DC power for causing the LED to emit light. Moreover, the metal wiring of a predetermined pattern is provided for electrically connecting the LEDs.

An LED is an example of a light emitting device. The LED is composed of, for example, a bare chip that emits monochromatic visible light, and is composed of a blue LED chip that emits blue light when energized. A plurality of LEDs are arranged in a matrix on the substrate 42, for example. Note that only one LED may be mounted on the substrate. The sealing member is made of, for example, translucent resin and contains a phosphor. The phosphor serves to wavelength convert the light from the LED. The sealing member is made of, for example, phosphor-containing resin in which phosphor particles are dispersed in silicone resin. If the light source module 41 emits white light and the LED is a blue LED chip that emits blue light, the phosphor particles are made of, for example, a YAG-based yellow phosphor.

The sealing member may, for example, collectively seal all the LEDs, may seal a plurality of LEDs in a line for each row, or may seal each LED individually. good too. Also, the light source may be composed of a light-emitting element other than an LED, or may be composed of a solid-state light-emitting element such as a semiconductor laser element, an organic EL (Electro Luminescence) element, or an inorganic EL element. Alternatively, the light source may consist of an incandescent lamp or a fluorescent lamp.

Next, the structure of moving lens assembly 60 will be described in detail. 6 is a perspective view of the moving lens assembly 60, and FIG. 7 is an exploded perspective view of the main parts of the moving lens assembly 60. FIG. As shown in FIGS. 6 and 7, the moving lens assembly 60 comprises an optical block 61 and a barrel structure 65. As shown in FIG. The optical block 61 has a lens holder 62 and a movable lens 63 as an example of an optical member. Also, the tubular structure 65 has a tubular member 64 and a ring member 67 .

First, the optical block 61 will be explained. 8 is an exploded perspective view of the optical block 61 and an enlarged perspective view showing the lens holder 62 and the moving lens 63. FIG. As shown in FIG. 8, the lens holder 62 is an annular member and includes a plurality of protrusions 62b that protrude inward in the R direction from an inner peripheral surface 62a thereof. The plurality of protruding portions 62b are positioned at intervals in the θ direction. On the other hand, the movable lens 63 includes a plurality of fitting recesses 63b recessed inward in the R direction in the outer peripheral edge portion 63a, and the plurality of fitting recesses 63b are positioned at intervals in the θ direction. The moving lens 63 is fixed to the lens holder 62 by fitting the projecting portions 62b of the lens holder 62 into the fitting recesses 63b of the moving lens 63 by press fitting or the like.

The moving lens 63 can be made of, for example, a transparent resin material such as acrylic, polycarbonate, or silicone, or a glass material. Further, as shown in FIG. 8, the lens holder 62 includes a plurality of columnar portions 62c having a concave surface 62e that is concave on the inner side in the R direction on the outer surface on the outer side in the R direction. They are spaced apart in the θ direction. The role of this columnar portion 62c will be described later.

Next, the tubular structure 65 will be described. 9 is a perspective view of the tube structure 65. FIG. As shown in FIG. 9, the cylindrical member 64 includes a cylindrical portion 64a as a cylindrical portion and an operation portion 69 integrally formed with the cylindrical portion 64a. The cylindrical portion 64a includes a plurality of through holes 64b that are spaced apart in the θ direction and extend in the R direction. The operation part 69 has a flange shape (disc shape) and is positioned at the end of the tubular member 64 on the light exit side. The outer peripheral surface of the operating portion 69 is a gripping portion 69a that is gripped by a person to rotate the operating portion 69. As shown in FIG. A role of the operation unit 69 will be described later.

10 is a plan view of the ring member 67. FIG. As shown in FIG. 10, the ring member 67 includes three or more arcuate portions 67a extending in the θ direction and two or more convex portions 67b. It connects a pair of end portions adjacent to each other in the θ direction, has a substantially U shape, and protrudes outward in the R direction from the arcuate portion 67a.

The ring member 67 has a shape with a gap 67c at one point in the θ direction. More specifically, the ring member 67 has a shape different from that of the C-shaped ring only in that it is provided with U-shaped projections 67b projecting radially outward at intervals. In this specification, a U-shape is defined as a shape of a structure having pillars arranged oppositely (they do not necessarily have to be arranged in parallel) and connecting portions that connect one-side ends of each pillar. do.

The ring member 67 is not only made of a material with excellent spring properties, but also has a shape with a gap 67c at one point in the θ direction. . The ring member 67 is accommodated inside the cylindrical member 64 in a state of being deformed so as to reduce its diameter inward in the R direction, and as shown in FIG. fit in. In this manner, the ring member 67 is fixed to the tubular member 64 . When the ring member 67 is fixed to the tubular member 64, the tip side of the protrusion 67b protrudes outward in the R direction from the through hole 64b, and as a result protrudes outward in the R direction from the cylindrical portion 64a. A portion of the convex portion 67 b that protrudes outward in the R direction from the cylindrical portion 64 a constitutes a protruding portion 70 .

As shown in FIG. 8, the lens holder 62 has two fitting claws 62d on the outer peripheral side. The fitting claw 62d is an example of a fitting portion. The two fitting claws 62d are arranged to face each other in the R direction, and each fitting claw 62d has a plate shape with a pair of inclined surfaces facing in the Z direction. It extends in a direction inclined with respect to the Although the case where the fitting portion is the fitting claw 62d has been described, the fitting portion may be cylindrical (pin-shaped).

On the other hand, as shown in FIG. 9, the tubular member 64 is a substantially cylindrical member and has two inclined grooves 64c spaced apart in the θ direction. The slanted groove 64c has a shape consisting of a part of a spiral groove. The inclined groove 64c is inclined with respect to the Z direction and extends from the lower side in the Z direction of the cylindrical member 64 to the upper side in the Z direction toward one side in the θ direction. The slanted groove 64c has a structure of an elongated long hole-shaped through-hole penetrating the cylindrical member 64 in the thickness direction, and includes a pair of inner wall surfaces (slanted surfaces) facing each other in the Z direction.

As shown in FIG. 6, the optical block 61 and the tubular structure 65 are integrally integrated by fitting the fitting claws 62d protruding outward in the R direction of the optical block 61 into the inclined grooves 64c of the tubular member 64. and the moving lens assembly 60 is constructed. 62 d of fitting claws are movable in the extending direction of the inclined groove 64c in the inclined groove 64c. When the optical block 61 rotates relative to the tubular member 64 in the direction indicated by θ1 from the state shown in FIG. By adjusting the position of the fitting claw 62d in the inclined groove 64c in this way, the Z-direction position of the moving lens 63 with respect to the cylindrical member 64 can be adjusted.

Referring to FIG. 2 again, the hood 95 has an annular flange portion 95a extending outward in the R direction on the side opposite to the light emitting side. Further, although not shown, the tubular member 64 has an annular flange portion extending inward in the R direction. Although not described in detail, the flange portion 95a is brought into contact with the end surface of the flange portion of the cylindrical member 64 on the side opposite to the light emission side, and a part of the outer peripheral surface of the hood 95 on the side opposite to the light emission side is cylindrical. A ring-shaped urging member fixed to the member 64 presses the hood 95 inward in the R direction to lock the hood 95 to the tubular member 64 so as not to fall off.

Next, the mounting structure of the movable lens assembly 60 with respect to the housing 30 will be described. 11 is a perspective view showing the end of the housing 30 on the light output side, and FIG. 12 is a cross-sectional view of part of the end of the housing 30 on the light output side. As shown in FIGS. 11 and 12, the inner peripheral surface 36 of the housing 30 has a plurality of inclined recesses 36a and an annular groove 36b as an example of recesses. The inclined concave portion 36a has an inclined surface 36c that is inclined inward in the R direction from the end of the housing 30 on the light emitting side toward the light source 43 side.

As shown in FIG. 12, the end of the inclined recess 36a on the side of the light source 43 in the Z direction is connected to the cylindrical inner peripheral surface 36d, and the annular groove 36b and the inclined recess 36a are connected via the cylindrical inner peripheral surface 36d. In this embodiment, the annular groove 36b and the inclined recess 36a are connected via the cylindrical inner peripheral surface portion 36d. The recess may be directly connected to the annular groove. Also, the case where the inner peripheral surface 36 of the housing 30 has the annular groove 36b has been described. However, the inner peripheral surface of the housing may have a plurality of circumferentially extending non-annular circumferentially extending grooves formed at the same position in the Z direction.

Referring to FIG. 13, the cylinder is arranged so that the range in the .theta. direction in which the plurality of projections 70 formed by the tips of the plurality of projections 67b exist is included in the range in the .theta. direction in which the plurality of inclined recesses 36a exist. The structure 65 can be placed on one side of the housing 30 in the Z direction. 10 is smaller than the maximum inner diameter of the inclined recess 36a indicated by Rc in FIG. is larger than the minimum inner diameter of the inclined recess 36a indicated by Re (the same as the inner diameter of the cylindrical inner peripheral surface portion 36d). Also, the maximum outer diameter Ra of the projection 67b is the same as or slightly larger than the maximum inner diameter (bottom inner diameter) Rd of the annular groove 36b. Also, the Z-direction dimension of the annular groove 36b is slightly larger than the axial thickness of the ring member 67 .

Again referring to FIG. 13 , as described above, the circumferential position of each projection 70 is included in the circumferential position of the inclined recess 36 a, and the central axis of the moving lens assembly 60 is aligned with the housing 30 . A fit-in preparation state in which it is substantially aligned with the central axis can be obtained. Also, the ring member 67 is highly elastic and easily deformed so as to contract inward in the R direction. Therefore, when the tubular structure 65 is relatively moved to the side opposite to the light emitting side indicated by the arrow A with respect to the housing 30 in the fitting preparation state, the protruding portion 70 can be smoothly inserted into the inclined recessed portion 36a. Each protrusion 70 can be deformed to have a reduced diameter. Then, as shown in FIG. 14, that is, a schematic cross-sectional view of a part of the illumination device 1, each projecting portion 70 is smoothly inserted into the annular groove 36b after getting over the cylindrical inner peripheral surface portion 36d (see FIG. 12). can be fitted in.

Since the maximum outer diameter Ra of the convex portion 67b is the same as the maximum inner diameter (bottom inner diameter) Rd of the annular groove 36b or slightly larger than the maximum inner diameter Rd, the convex portion 67b escapes from the annular groove 36b. never. Therefore, it is possible to prevent the moving lens assembly 60 from detaching from the housing 30 and integrate the moving lens assembly 60 with the housing 30 . Furthermore, since the Z-direction dimension of the annular groove 36b is slightly larger than the axial thickness of the ring member 67, the Z-direction position of the ring member 67 hardly changes, and thus the Z-direction position of the cylindrical structure 65 does not change much either. Further, as shown in FIG. 1, when the movable lens assembly 60 is integrated with the housing 30, the operation portion 69 of the cylindrical structure 65 is exposed from the housing 30, and a person can grasp the grip portion 69a. can be done.

Furthermore, the fitting of the moving lens assembly 60 into the housing 30 is performed so as to limit the relative movement of the optical block 61 in the θ direction. More specifically, as shown in FIG. 3, the housing 30 has pillars 39 that protrude inward in the R direction from an inner peripheral surface 38 and are spaced apart in the θ direction. The end face on the one side is a convex surface 39a that is convex inward in the R direction. Further, as described above, referring to FIG. 8, the lens holder 62 includes a plurality of columnar portions 62c having concave surfaces 62e that are concave on the inner side in the R direction on the outer surface on the outer side in the R direction. The columnar portions 62c are positioned at intervals in the θ direction. When the movable lens assembly 60 is fitted into the housing 30 , each concave surface 62 e of the lens holder 62 is engaged with the convex surface 39 a of the housing 30 . This locking prevents the lens holder 62 from moving relative to the housing 30 in the .theta. can be prevented.

In the above configuration, it is assumed that a person rotates the cylindrical structure 65 with respect to the housing 30 using the grip portion 69a. Then, the optical block 61 cannot rotate with respect to the housing 30 because the concave surface 62e of the columnar portion 62c is engaged with the convex surface 39a of the column portion 39 of the housing 30, so that the cylindrical structure 65 rotates. The cylindrical structure 65 rotates relative to the optical block 61 without co-rotating together. Accordingly, this relative rotation causes the fitting claw 62d to move within the inclined groove 64c, and as a result, the optical block 61 moves relative to the tubular structure 65 in the Z direction. Therefore, as described above, even if the cylindrical structure 65 rotates, the Z-direction position of the cylindrical structure 65 hardly changes, so that the Z-direction position of the optical block 61 can be freely changed. Therefore, since the Z-direction position of the moving lens 63 included in the optical block 61 can also be freely changed, the Z-direction position of the moving lens 63 with respect to the light source module 41 can be appropriately adjusted, and narrow-angle control of emitted light can be performed. can. Furthermore, since the maximum outer diameter Ra of the convex portion 67b is the same as the maximum inner diameter Rd of the annular groove 36b or slightly larger than the maximum inner diameter Rd, a slight frictional force acts between the annular groove 36b and the convex portion 67b. It acts between portions 67b. Therefore, when the movable lens 63 is set at an appropriate position in the Z direction and the cylindrical structure 65 is stationary with respect to the housing 30, the cylindrical structure 65 does not move relative to the housing 30 in the θ direction. It is possible to prevent the Z-direction position of the lens 63 from fluctuating.

As described above, the illumination device 1 includes the housing 30 including the inner peripheral surface having the annular groove (recess) 36 b and the light source 43 arranged in the housing 30 . In addition, the illumination device 1 has a cylindrical portion (cylindrical portion) 64a, and 1 which is elastically deformable in the R direction (radial direction), protrudes outward in the R direction from the cylindrical portion 64a, and is fitted into the annular groove 36b. A tubular structure 65 having the protrusion 70 as described above is provided. At least part of the cylindrical structure 65 is housed inside the housing 30 .

Therefore, since each projecting portion 70 projecting outward in the R direction from the cylindrical portion 64a is elastically deformable in the R direction (radial direction), the projecting portion 70 is deformed so as to be distorted inward in the R direction. It can be smoothly moved to the position where the annular groove 36b exists in the Z direction. Further, after the projecting portion 70 reaches the position where the annular groove 36b exists, the projecting portion 70 can be expanded in diameter so as to release the elastic energy of the projecting portion 70, and the projecting portion 70 can be smoothly inserted into the annular groove 36b. can be accommodated. Therefore, even if the housing 30 does not have a split structure, the projecting portion 70 can be smoothly accommodated in the annular groove 36b, the Z-direction position of the cylindrical structure 65 does not substantially change, and the θ of the cylindrical structure 65 with respect to the housing 30 A structure capable of relative rotation in direction can be realized much more easily. Therefore, the tubular structure 65 can be smoothly held by the housing 30, and the tubular structure 65 can be easily prevented from falling off the housing 30, thereby greatly improving workability.

Further, the tubular structure 65 may have a tubular member 64 having two or more through holes 64b extending in the R direction, and a ring member 67 having a gap at one point in the θ direction. The ring member 67 has three or more arcuate portions 67a extending in the θ direction, and a pair of end portions of the three or more arcuate portions 67a adjacent to each other in the θ direction, and has a substantially U shape. It may include two or more protrusions 67b that protrude outward in the R direction from the arcuate portion 67a. Each protrusion 67b may pass through the through hole 64b, and the protrusion 70 may be included in a portion of the protrusion 67b that protrudes outward in the R direction from the through hole 64b.

According to the above configuration, since the tubular structure 65 includes the tubular member 64 and the ring member 67, the ring member 67 can be separated from the tubular member 64, and the ring member 67 can be separated from the tubular member 64. can be removed. It may be desired to change the emitted light of the illumination device 1 later, and it may be desired to replace the light source 43 . In such a case, referring to FIG. 9, a tool or the like is inserted between the arc-shaped portion 67a and the inner peripheral surface of the cylindrical member 64 to apply force to the arc-shaped portion 67a on the inner side in the R direction. By doing so, the ring member 67 can be removed from the tubular member 64 . Therefore, the light source 43 can be replaced without destroying the lighting device 1, and the convenience of the lighting device 1 can be improved.

Further, the housing 30 may have one or more inclined recesses 38a having inclined surfaces 36c that incline inward in the R direction from the end opposite to the light source toward the light source in the Z direction. good. Further, the cylindrical structure 65 can be arranged on one side of the housing 30 in the Z direction so that the range in the θ direction in which the one or more protrusions 70 exist is included in the range in the θ direction in which the one or more inclined recesses 38a exist. good.

According to the above configuration, the projecting portion 70 can be inserted into the housing 30 via the inclined recessed portion 38a. Therefore, the projecting portion 70 can be smoothly contracted so that its outer diameter is gradually reduced. Therefore, the projecting portion 70 can be smoothly accommodated in the annular groove 36b, and workability in assembling the lighting device 1 can be improved.

Further, the maximum outer diameter Ra of the protrusion 70 (matching the maximum outer diameter of the protrusion 67b) in a state where no external force is applied may be smaller than the maximum inner diameter Rc of the inclined recess 36a. It may be larger than the inner diameter Re.

According to the above configuration, since the maximum outer diameter Ra is smaller than the maximum inner diameter Rc of the inclined recess 36a, the projecting portion 70 can be smoothly inserted into the inclined recess 36a. In addition, since the maximum outer diameter Ra is larger than the minimum inner diameter Re of the inclined recess 36a, the projection 70 is reliably prevented from being removed from the housing 30 after being accommodated in the annular groove 36b. can.

Further, the maximum outer diameter Ra of the protruding portion 70 in a state where no external force is applied may be equal to or greater than the maximum inner diameter Rd of the annular groove 36b of the housing 30 .

According to the above configuration, a frictional force is generated between the projecting portion 70 and the annular groove 36b. Therefore, it is possible to substantially prevent the movable lens 63 from rotating relative to the annular groove 36b after the Z-direction position of the movable lens 63 is determined. Therefore, after the Z-direction position of the moving lens 63 is determined, it is possible to substantially prevent the Z-direction position of the moving lens 63 from fluctuating, and the desired narrow-angle control of the emitted light can be executed.

Note that, unlike the above-described embodiment, the maximum outer diameter of the protruding portion when no external force is applied may be smaller than the maximum inner diameter of the recessed portion of the housing. According to this modification, the protrusion can be prevented from receiving force from the recess of the housing, and the protrusion can be prevented from being deteriorated due to contact with the recess. Therefore, the durability of the projecting portion can be increased, and the life of the lighting device 1 can be extended.

The illumination device 1 may also include a movable lens (optical member) 63 held by the cylindrical structure 65 .

According to the above configuration, the movable lens 63 can be smoothly attached to the housing. Although the case where the optical member is the moving lens 63 has been described, the optical member may be a translucent cover or the like that is made of a translucent material and does not have a lens function. Moreover, although the moving lens 63 is fixed to the lens holder 62 and the lens holder 62 is held by the cylindrical structure 65, the lens holder may be omitted and the lens may be directly held by the cylindrical structure. Alternatively, the cylindrical structure may not hold the optical member.

The illumination device 1 may also comprise an optical block 61 including a moving lens 63 . Alternatively, the concave portion provided in the housing 30 may be the annular groove 36b extending in the θ direction, and the position of the projecting portion 70 in the θ direction within the annular groove 36b may be variable. Further, the cylindrical structure 65 may be rotatable with respect to the housing 30 without substantially changing its position in the Z direction. Also, the optical block 61 may be restricted in relative rotation with respect to the housing 30 . Also, the cylindrical structure 65 may have an inclined groove 64c that is inclined with respect to the Z direction. The optical block 61 may have a fitting claw (fitting portion) 62d that is fitted in the inclined groove 64c and changes its position in the inclined groove 64c when the cylindrical structure 65 rotates with respect to the housing 30. good.

According to the above configuration, the Z-direction position of the moving lens 63 can be freely changed without substantially changing the Z-direction position of the cylindrical structure 65 . Therefore, narrow-angle control of emitted light can be performed without changing the dimension of the illumination device 1 in the Z direction, so not only narrow-angle control of emitted light can be performed, but also the appearance of the illumination device 1 can be improved.

Note that the optical block including the lens may be relatively rotatable with respect to the housing, and the cylindrical structure may not have an inclined groove that is inclined with respect to the Z direction. Further, the optical block does not have to have a fitting portion that is fitted in the slanted groove and changes its position in the slanted groove when the cylindrical structure rotates with respect to the housing. Some lighting devices can change the light distribution by controlling the rotation of the lens. According to this modification, such a lighting device can be easily realized without dividing the housing.

It should be noted that the present disclosure is not limited to the above embodiments and modifications thereof, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents.

For example, in the above embodiment, the tubular structure 65 includes the tubular member 64 including the tubular portion and the ring member 67 including the projecting portion. included configuration.

More specifically, as shown in FIG. 15, a perspective view of a modified tubular member 164, the unitary tubular member 164 may include a tubular structure 165 that includes a tubular portion 169 and a protrusion 170. good. Further, the tubular portion 169 may have a through hole 169a extending in the θ direction. Further, the tubular member 164 may include a circumferential protrusion 175 that protrudes from the tubular portion 169 and whose tip portion 177 overlaps the through hole 169a when viewed from the R direction. Protrusion 170 may then be included in tip 177 .

It is preferable that the tubular member 164 is made of an elastic resin material. According to this modification, the circumferential projection 175 extends toward the through hole 169a extending in the θ direction from the cylindrical portion 169, so the circumferential projection 175 is bent inward in the R direction. can be transformed into Therefore, the projecting portion 170 can be elastically deformed smoothly in the radial direction.

16, the cylindrical member 164 is moved to the Z direction of the housing 30 with the extending position of the protrusion 170 in the θ direction aligned with the position of the inclined recess 136a of the housing 30. As shown in FIG. It is placed on the light exit side of the direction. By moving the cylindrical member 164 relative to the housing 30 to the side opposite to the light emitting side indicated by the arrow B, the protruding portion 170 smoothly fits into the inclined recessed portion 136a in the same manner as in the embodiment shown in FIG. and then smoothly into the annular groove 36b (see FIG. 11).

Further, in the above-described embodiment, the case where the concave portion provided in the housing 30 is a groove extending in the circumferential direction and the cylindrical structure 65 is rotatable relative to the housing 30 has been described. However, the recess provided in the housing may not extend in the circumferential direction, and the cylindrical structure may not be relatively rotatable with respect to the housing. Also in this case, unlike the structure described in the prior art, the tubular structure can be fixed to the housing without using screws. Therefore, the tubular structure can be fixed to the housing with great ease, and workability can be greatly improved.

Reference Signs List 1 illumination device 30 housing 36b annular groove 36c inclined surface 38a inclined recess 43 light source 61 optical block 62 lens holder 62d fitting claw (fitting portion) 63 moving lens (optical member) 64 , 164 tubular member 64a cylindrical portion (tubular portion) 64b through hole 64c inclined groove 65,165 tubular structure 67 ring member 67a arc-shaped portion 67b convex portion 70 projecting portion 169 tubular portion , 169a through-hole extending in the circumferential direction, 170 protrusion, 175 circumferential protrusion, 177 tip, Ra maximum outer diameter of the protrusion when no external force is acting, Rc maximum inner diameter of the inclined recess, Rd housing The maximum inner diameter of the annular groove of the body, Re the minimum inner diameter of the inclined recess, the R direction the radial direction of the housing, the θ direction the circumferential direction of the housing, and the Z direction the optical axis direction.

Claims (9)

a housing including an inner peripheral surface having a recess;
a light source disposed within the housing;
a cylindrical portion, and one or more protrusions that are elastically deformable in a radial direction and protrude outward in the radial direction from the cylindrical portion and are fitted into the recess, at least part of which being the housing a cylindrical structure to be accommodated in the body ;
The cylindrical structure is
a tubular member having two or more through holes extending in the radial direction;
three or more arcuate portions extending in the circumferential direction, and a pair of end portions of the three or more arcuate portions that are adjacent in the circumferential direction and having a substantially U shape, extending from the arcuate portion a ring member including two or more projections projecting outward in the radial direction and having a gap at one location in the circumferential direction;
Each of the protrusions penetrates through the through hole,
the projecting portion is included in a portion of the projecting portion projecting outward in the radial direction from the through hole,
The lighting device , wherein the projection is rotatable with respect to the housing in a circumferential direction of the housing . a housing including an inner peripheral surface having a recess;
a light source disposed within the housing;
a cylindrical portion, and one or more protrusions that are elastically deformable in a radial direction and protrude outward in the radial direction from the cylindrical portion and are fitted into the recess, at least part of which being the housing a cylindrical structure to be accommodated in the body;
the cylindrical structure is included in an integrated cylindrical member including the cylindrical portion and the projecting portion;
The cylindrical portion has a through hole extending in the circumferential direction,
The tubular member includes a circumferential protrusion that protrudes from the tubular portion and has a distal end portion that overlaps the through hole when viewed in the radial direction,
The lighting device, wherein the projecting portion is included in the tip portion. The housing is inclined inward in the radial direction from an end opposite to the light source side in the optical axis direction of the emitted light emitted from the light source toward the light source side in the optical axis direction. having one or more slanted recesses with slanted surfaces;
The cylindrical structure is arranged on one side of the housing in the optical axis direction so that the circumferential range in which the one or more protrusions exist is included in the circumferential range in which the one or more inclined recesses exist. 3. A lighting device according to claim 1 or 2 , capable of. 4. The lighting device according to claim 3 , wherein the maximum outer diameter of the protrusion in a state where no external force is applied is smaller than the maximum inner diameter of the inclined recess and larger than the minimum inner diameter of the inclined recess. 5. The lighting device according to any one of claims 1 to 4 , wherein a maximum outer diameter of said protrusion in a state where no external force is applied is greater than or equal to a maximum inner diameter of said recess of said housing. 5. The lighting device according to any one of claims 1 to 4 , wherein a maximum outer diameter of said protrusion in a state where no external force acts is smaller than a maximum inner diameter of said recess of said housing. 7. A lighting device according to any one of the preceding claims, comprising an optical member held in said tubular structure. Equipped with an optical block containing a lens,
The recess is a groove extending in the circumferential direction, the position of the protrusion in the recess in the circumferential direction is variable, and the cylindrical structure is the optical axis of the light emitted from the light source. 8. The lighting device according to any one of claims 1 to 7 , wherein the lighting device is rotatable with respect to the housing without substantially changing its directional position. the optical block is restricted in relative rotation with respect to the housing,
The cylindrical structure has an inclined groove inclined with respect to the optical axis direction,
9. The illumination device according to claim 8 , wherein the optical block has a fitting portion that fits into the slant groove and changes its position in the slant groove when the cylindrical structure rotates with respect to the housing.

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