Lighting device

Abstract

To provide a small lighting device.SOLUTION: A lighting device includes: a body part; a lamp body part having a light source arrangement member in which a light source is disposed in an internal space; an arm part connecting the body part with the lamp body part; and a swing mechanism which has a motor and is configured to swing the lamp body part relative to the arm part. A partition member which partitions the internal space into a first internal space at one side in an axial direction and a second internal space at the other side in the axial direction is fixed to the light source arrangement member. The light source is disposed in the first internal space. The motor is disposed in the second internal space.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a lighting device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is known a lighting device whose lighting body can be rotated horizontally and vertically to change the irradiation direction to any direction (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-225799 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technique described in Patent Document 1 leaves room for improvement in terms of miniaturization of the lighting device.

[0005] The present invention has been made in view of the above, and has an object to provide a compact lighting device. [Means for solving the problem]

[0006] In order to solve the above problems and achieve the object, the lighting device according to the present invention comprises a main body, a lamp body having a light source arrangement member in which a light source is arranged in an internal space, an arm connecting the main body to the lamp body, and a swing mechanism having a motor and swinging the lamp body relative to the arm. A partition member is fixed to the light source arrangement member, which partitions the internal space into a first internal space on one side in the axial direction and a second internal space on the other side in the axial direction. The light source is arranged in the first internal space. The motor is arranged in the second internal space.

[0007] According to one aspect of the lighting device of the present invention, the lighting device can be made compact. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of the lighting device according to the first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the lighting device shown in FIG. [Diagram 3] FIG. 3 is a cross-sectional view of the lighting device shown in FIG. [Figure 4] 4 is a cross-sectional view of a light source arrangement member and a partition member in a lamp body portion of the lighting device shown in FIG. [Diagram 5] 5 is a perspective view of a light source placement member and a partition member in a lamp body portion of the lighting device shown in FIG. [Figure 6] FIG. 6 is an exploded perspective view of a portion of the lighting device according to the second embodiment. [Figure 7] FIG. 7 is a cross-sectional view of a portion of the lighting device shown in FIG. [Figure 8] FIG. 8 is a cross-sectional view of a portion of the lighting device shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The lighting device according to the embodiment will be described in detail below with reference to the drawings. The dimensional relationship and ratio of each element in the drawings may differ from the reality. The dimensional relationship and ratio may differ between the drawings.

[0010] (First embodiment) The lighting device 1 according to the first embodiment will be described with reference to Figs. 1 to 5. Fig. 1 is a perspective view of the lighting device 1 according to the first embodiment. Fig. 2 is an exploded perspective view of the lighting device 1 shown in Fig. 1. Fig. 3 is a cross-sectional view of the lighting device 1 shown in Fig. 1. Fig. 4 is a cross-sectional view of a light source positioning member 321 and a partition member 323 in the lamp body section 3 of the lighting device 1 shown in Fig. 1. Fig. 5 is a perspective view of the light source positioning member 321 and the partition member 323 in the lamp body section 3 of the lighting device 1 shown in Fig. 1.

[0011] 1 according to this embodiment, for convenience of explanation, a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other will be used. Each direction changes depending on the position where the lighting device 1 is attached, but as described later, for example, the third direction Z is the up-down direction and the direction Z1 is the down direction.

[0012] The lighting device 1 according to the present embodiment is disposed inside a building such as an apartment building, a detached house, a store, a warehouse, an art gallery, a museum, etc. The lighting device 1 shown in Fig. 1 includes, for example, a main body 2, a lamp body 3, an arm 4, a rotation mechanism 5 (see Fig. 2), and a swing mechanism 6 (see Fig. 2).

[0013] The main body 2 includes, for example, a power receiving terminal 21, a first casing 22, and a substrate 23. For ease of explanation, the following description will be given assuming that an axis 2z (see FIG. 3) of the main body 2 is aligned with the third direction Z. That is, in this state, the axial direction of the main body 2 coincides with the third direction Z.

[0014] The power receiving terminal 21 has a pair of conductive power receiving fittings (not shown) and is attached to a power feeding terminal (not shown). The power feeding terminal is, for example, a duct rail. And the power feeding terminal has, for example, a pair of conductive power feeding fittings. The power feeding fittings are, for example, made of a conductive metal and extend in the horizontal direction, and are electrically connected to a power source E (see FIG. 3). When the power receiving terminal 21 is attached to the power feeding terminal, the power receiving fittings are electrically connected to the power source E. In the lighting device 1 according to this embodiment, for example, when the pair of power feeding fittings are power feeding terminals facing each other in the horizontal direction, the third direction Z is the up-down direction. In this case, Z1, which is one direction in the third direction Z, is the down direction. On the other hand, in the lighting device 1, for example, when the pair of power feeding fittings are power feeding terminals facing each other in the up-down direction, the third direction Z is the horizontal direction.

[0015] The first casing 22 has, for example, a pair of side casings 221 facing each other in the first direction X, and a bottom casing 222. The pair of side casings 221 are provided with through holes and screw holes at predetermined locations, and the pair of side casings 221 are fixed to each other by inserting first screws N1 (see FIG. 2) into the through holes and screwing into the screw holes.

[0016] A control circuit that comprehensively controls each part of the lighting device 1 is formed on the board 23. The board 23 is housed inside the first casing 22. The control circuit is electrically connected to a power source E via a power receiving fitting and a power supply fitting. Furthermore, a communication circuit and an antenna are provided on the board 23, and the communication circuit and the antenna can drive and stop a first motor 52 and a second motor 62, which will be described later, in response to commands from a remote control.

[0017] The lamp unit 3 shown in FIG. 2 includes a light source 31, a second casing 32, a holder 33, a lens 34, and a sleeve 35. For ease of explanation, the following description will be given assuming that the axis 3z (see FIG. 3) of the lamp unit 3 is aligned with the third direction Z unless otherwise specified. That is, in this state, the axial direction of the lamp unit 3 coincides with the third direction Z. In addition, the radial size of the lamp unit 3 according to this embodiment is substantially the same as the radial size of the main body 2, as shown in FIG. 3. Therefore, the lighting device according to this embodiment can improve aesthetics by making the radial size of the main body 2 and the radial size of the lamp unit 3 substantially the same.

[0018] The light source 31 is, for example, an LED (light emitting diode). The light source 31 is electrically connected to the power source E via a power receiving fitting and a power supply fitting, and in this connected state, emits light to one side in the axial direction of the light body unit 3 (the Z1 side in the state shown in FIG. 3).

[0019] The second casing 32 shown in Fig. 3 includes a light source positioning member 321, a cover member 322, and a partition member 323. The light source positioning member 321 has an internal space 321s (see Fig. 4) in which the light source 31 is arranged, and is formed in a cylindrical shape having openings on both ends in the axial direction of the lamp body 3. In other words, the lamp body 3 has the light source positioning member 321 in which the light source 31 is arranged in the internal space 321s.

[0020] 4, the light source arrangement member 321 has a first inner peripheral surface 3211 located on one side of the axial direction of the lamp body 3, a second inner peripheral surface 3212 located on the other side of the axial direction of the lamp body 3, and a step portion 3213 located between the first inner peripheral surface 3211 and the second inner peripheral surface 3212 in the axial direction of the lamp body 3. A radius r11 from the axis 321z of the light source arrangement member 321 to the first inner peripheral surface 3211 is larger than a radius r12 from the axis 321z to the second inner peripheral surface 3212. Furthermore, before the lamp body 3 is assembled, the radius r11 from the axis 321z of the light source arrangement member 321 to the first inner peripheral surface 3211 is smaller than a radius r31 from the axis 321z to the outer peripheral surface 3231 of the partition member 323. These radii will be described later in the assembly of the lamp body 3. In the lighting device 1 according to this embodiment, the axis 321z of the light source arrangement member 321 shown in FIG. 4 coincides with the axis 3z of the lamp body 3 shown in FIG.

[0021] Further, the light source positioning member 321 is formed with a plurality of screw holes 321H1, first through holes 321H2, and second through holes (holes) 321H3 that penetrate the light source positioning member 321 in the X direction.

[0022] The first inner circumferential surface 3211 is formed as a smooth circumferential surface without irregularities in the radial direction, except for one end portion in the axial direction of the light body 3. In addition, a thread 11N1 is formed on the first inner circumferential surface 3211 at one end portion in the axial direction of the light body 3.

[0023] The second inner circumferential surface 3212 is formed as a smooth circumferential surface without unevenness in the radial direction, except for the other end portion in the axial direction of the light body 3. In addition, a thread 12N1 is formed on the second inner circumferential surface 3212 at the other end portion in the axial direction of the light body 3.

[0024] The cover member 322 shown in Fig. 3 closes the internal space 321s on the other side in the axial direction of the lamp body 3. A thread 22N2 is formed on the outer peripheral surface of the cover member 322. The thread 22N2 of the cover member 322 is screwed into the thread 12N1 of the second inner peripheral surface 3212, and the cover member 322 closes the other side of the internal space 321s in the axial direction of the lamp body 3. A recess 3221 is formed in the cover member 322, the central part of which is recessed in the radial direction relative to the outer peripheral part in the radial direction, and the internal volume of the second casing 32 can be increased by adding an additional space 21s by the recess 3221 to the internal space 321s.

[0025] The partitioning member 323 is formed, for example, in a disk shape. An outer peripheral surface 3231 of the partitioning member 323 is formed into a smooth peripheral surface without any unevenness in the radial direction. The partitioning member 323 according to this embodiment is made of an aluminum alloy. As shown in FIG. 4, the partitioning member 323 is disposed in the internal space 321s of the light source arrangement member 321, and partitions the internal space 321s into a first internal space 321s1 on one side in the axial direction of the lamp body unit 3 and a second internal space 321s2 on the other side in the axial direction of the lamp body unit 3.

[0026] 5, the partition member 323 has a notch 3232. The notch 3232 is formed on the outer circumferential edge of the partition member 323 so as to be recessed radially inward.

[0027] When the partitioning member 323 is assembled to the light source positioning member 321, the first inner circumferential surface 3211 of the light source positioning member 321 comes into contact with the outer circumferential surface 3231 of the partitioning member 323, and the step portion 3213 comes into contact with the surface 323f on the other side in the axial direction of the partitioning member 323. In the lamp body unit 3 according to this embodiment, the entire circumference of the first inner circumferential surface 3211 of the light source positioning member 321 comes into contact with the outer circumferential surface 3231 of the partitioning member 323 excluding the notch 3232. The step portion 3213 is formed so as to continue along the entire circumference of the inner circumferential surface of the light source positioning member 321 in the circumferential direction.

[0028] 2 is a member that holds the light source 31, and is fixed to the partition member 323 with screws or the like (not shown). The lens 34 is, for example, a cup lens, and distributes the light emitted from the light source 31 in a desired direction.

[0029] The sleeve 35 presses the lens 34 against the partition member 323 via the holder 33 in the axial direction of the lamp body 3, thereby attaching the lens 34 to the light source arrangement member 321 and the partition member 323.

[0030] The arm section 4 has an arm base member 41, a first arm cover 42, and a second arm cover 43. The arm base member 41, the first arm cover 42, and the second arm cover 43 are made of, for example, synthetic resin. The first arm cover 42 and the second arm cover 43 are formed to have the same shape and size. Furthermore, the arm section 4 is attached to the main body section 2 so as to be rotatable around an axis 2z (see FIG. 3) of the main body section 2. Furthermore, the arm section 4 connects the lamp section 3 to the main body section 2.

[0031] The first arm cover 42 is attached to the arm base member 41 by the second screw N2. When the first arm cover 42 is attached to the arm base member 41, the arm base member 41 and the first arm cover 42 form a first arm internal space 42s as shown in Fig. 3. That is, the arm unit 4 has the first arm internal space 42s.

[0032] The second arm cover 43 is attached to the arm base member 41 by the second screw N2. When the second arm cover 43 is attached to the arm base member 41, a second arm internal space 43s is formed by the arm base member 41 and the second arm cover 43. In other words, the arm unit 4 has the second arm internal space 43s.

[0033] The rotation mechanism 5 rotates the lamp body 3 and the arm 4 around the axis 2z of the main body 2. The rotation mechanism 5 includes a first bracket 51, a first motor 52, and a rotor 53. The rotation mechanism 5 having such a configuration is disposed inside the first casing 22. As described above, when the lighting device 1 is attached to a power supply terminal in which a pair of power supply fittings face each other in the horizontal direction, the rotation mechanism 5 serves as a horizontal angle adjustment mechanism (so-called pan mechanism) that rotates the lamp body 3 and the arm 4 around the axis 2z of the main body 2 and rotates the light emission direction.

[0034] The first bracket 51 fixes the first motor 52 to the first casing 22. More specifically, the first bracket 51 has, for example, a plurality of first through holes 51H1 and one second through hole 51H2 penetrating the first bracket 51 in the axial direction of the main body 2. The first motor 52 is fixed to the first casing 22 by fixing the first motor 52 to the bottom casing 222 with third screws N3 inserted into the first through holes 51H, respectively.

[0035] The first motor 52 is electrically connected to a power source E via electric wires, a power receiving metal fitting, and a power supply metal fitting (not shown). Furthermore, the first motor 52 has a first motor body 521 and a first drive shaft 522 that is rotatable relative to the first motor body 521. The first drive shaft 522 is inserted into the second through hole 51H2 of the first bracket 51.

[0036] The rotating body 53 is fixed to the arm base member 41 by a fourth screw N4. The rotating body 53 also has a first driven shaft 531 (see FIG. 3) fixed to the first driving shaft 522 inserted through the second through hole 51H2. When the first motor 52 is driven, the first driven shaft 531 and the rotating body 53 rotate together with the rotation of the first driving shaft 522. In other words, when the first motor 52 is driven, the rotating body 53, the arm unit 4, and the lamp unit 3 rotate around the axis 2z of the main body unit 2.

[0037] The swing mechanism 6 swings the lamp body 3 about the axis 2z of the main body 2 with the arm 4 interposed therebetween. The swing mechanism 6 includes a second bracket 61, a second motor 62, a shaft coupling 63, and a pair of joints 64. That is, the swing mechanism 6 has at least the second motor 62. As described above, when the lighting device 1 is attached to the power supply terminals where the pair of power supply fittings face each other in the horizontal direction, the swing mechanism 6 becomes a vertical angle adjustment mechanism (so-called tilt mechanism) that rotates the lamp body 3 about an axis perpendicular to the axis 2z of the main body 2 to change the direction in which light is emitted.

[0038] The second bracket 61 is fixed to the partition member 323 by a plurality of fifth screws N5. That is, the second bracket 61 is fixed to the second casing 32 by the fifth screws N5. The second bracket 61 has, for example, a plurality of first through holes 61H1 penetrating the second bracket 61 in the first direction X and one second through hole 61H2 penetrating the second bracket 61 in the first direction X.

[0039] The second motor 62 has a second motor body (motor body) 621 and a second drive shaft (drive shaft) 622 rotatable relative to the second motor body 621. The second drive shaft 622 is inserted through the second through hole 61H2. The second motor 62 is fixed to the partition member 323 via the second bracket 61 by a sixth screw N6. The second motor 62 is also electrically connected to the power source E via the electric wire W, the power receiving metal fitting, and the power supply metal fitting. The second motor 62 according to this embodiment is disposed in the internal space 321s of the light source positioning member 321. More specifically, the second motor 62 is disposed in the second internal space 321s2 in the light source positioning member 321.

[0040] The shaft coupling 63 transmits the driving force of the second drive shaft 622 of the second motor 62 to the arm unit 4, and has a second driven shaft (motor side driven shaft) 631, a plurality of elastic members 632, and a third driven shaft 633 (arm side driven shaft). In other words, the second drive shaft 622 is fixed to the arm unit 4 via the shaft coupling 63. In addition, the swing mechanism 6 according to this embodiment functions as a clutch.

[0041] The second driven shaft 631 is formed, for example, to extend in the first direction X, and has a first end 6311 located on one side of the first direction X and fixed to the second driving shaft 622, and a second end 6312 located on the other side of the first direction X and in contact with the inner surface of the elastic member 632.

[0042] The elastic member 632 is formed, for example, from rubber or the like, so as to be elastically deformable in the radial and axial directions of the axis 622x of the second drive shaft 622. The elastic member 632 is formed, for example, in an annular shape, and the second driven shaft 631 contacts the inner circumferential surface of the elastic member 632, while the third driven shaft 633 contacts the outer circumferential surface of the elastic member 632.

[0043] The third driven shaft 633 has a plate-shaped first portion 6331 and a cylindrical second portion 6332. The first portion 6331 and the second portion 6332 are fixed to the arm base member 41 by a plurality of seventh screws N7. The position of the second driven shaft 631 in the first direction X is determined with respect to the second portion 6332 in a rotatable state by an eighth screw N8.

[0044] The shaft coupling 63 having the above-mentioned configuration is housed in the first arm internal space 42s. In other words, the shaft coupling 63 that transmits the driving force of the second drive shaft 622 of the second motor 62 is disposed in the first arm internal space 42s. Meanwhile, an electric wire W that electrically connects the second motor 62 and a power source E is disposed in the second arm internal space 43s.

[0045] The pair of joints 64 support the lamp unit 3 rotatably around the axis 622x of the second drive shaft 622 relative to the arm unit 4. Each of the joints 64 includes a fixing ring 641 that fixes the joint 64 to the arm base member 41. Each of the joints 64 is fixed to the light source arrangement member 321 by a ninth screw N9.

[0046] In the oscillating mechanism 6 of this embodiment, the second motor body 621 is fixed to the partition member 323 via the second bracket 61, while the second drive shaft 622 is inserted through the second through hole 61H2 and fixed to the second driven shaft 631.

[0047] When a driving force exceeding the maximum static friction force of the elastic member 632 is applied to the second driving shaft 622 by driving the second motor 62, the inner peripheral surface of the second portion 6332 of the third driven shaft 633 slides against the outer peripheral surface of the elastic member 632, thereby rotating the second motor 62 relative to the arm portion 4, whereas when a force exceeding the maximum static friction force of the elastic member 632 is not applied to the second driving shaft 622, the shaft coupling 63 having a function as a clutch does not rotate the third driven shaft 633. In other words, when the second motor 62 is driven in the lighting device 1, the second motor main body 621 rotates relative to the arm portion 4 by the swing mechanism 6, thereby swinging the lamp portion 3 relative to the main body portion 2 and the arm portion 4.

[0048] Furthermore, in the case where a third party applies excessive force from the outside to the lamp unit 3 in an attempt to change the position of the lamp unit 3 relative to the main body unit 2 and the arm unit 4, the shaft coupling (clutch) 63 according to this embodiment rotates the lamp unit 3 relative to the arm unit 4 by causing the outer circumferential surface of the elastic member 632 to slide against the inner circumferential surface of the second portion 6332 of the third driven shaft 633. At this time, since an excessive force exceeding the maximum static friction force from the outside is not applied to the second driven shaft 631, it is possible to prevent excessive force from being applied to the second drive shaft 622 of the second motor 62.

[0049] Next, a manufacturing method (assembly method) for part of the lamp body 3 according to this embodiment will be described below. A light source arrangement member 321 shown in Fig. 4 is formed by cutting an aluminum alloy pipe.

[0050] Next, the worker inserts the tip of pin P1 into second through hole 321H3 of light source positioning member 321.

[0051] Next, the partitioning member 323 is fixed to the light source positioning member 321 by shrink fitting. More specifically, the heating process heats the light source positioning member 321 to a required temperature or higher, causing it to thermally expand, so that the radius r11 from the axis 321z of the light source positioning member 321 to the first inner circumferential surface 3211 is made slightly larger than the radius r31 from the axis 321z to the outer circumferential surface 3231 of the partitioning member 323. In this state, the radius r12 from the axis 321z of the light source positioning member 321 to the second inner circumferential surface 3212 is slightly smaller than the radius r31 from the axis 321z to the outer circumferential surface 3231 of the partitioning member 323.

[0052] In this state, the partition member 323 is inserted into the first internal space 321s1 from one opening in the axial direction of the light source positioning member 321, and the light source positioning member 321 is temporarily fixed so that the axis 321z of the light source positioning member 321 is aligned in the vertical direction.

[0053] In this state, the partition member 323 is moved circumferentially inside the light source positioning member 321, and the pin P1 is engaged with the notch 3232 of the partition member 323 in the circumferential direction, thereby positioning the partition member 323 relative to the light source positioning member 321 in the circumferential direction.

[0054] When the pin P1 engages with the notch 3232, the outer peripheral surface 3231 of the partition member 323 faces the first inner peripheral surface 3211, and the surface 323f on one side of the partition member 323 in the axial direction contacts the step portion 3213, thereby positioning the partition member 323 relative to the light source positioning member 321 in the axial direction (third direction Z).

[0055] Thereafter, the light source positioning member 321 is thermally shrunk by dissipating heat, and the radius r11 from the axis 321z of the light source positioning member 321 to the first inner surface 3211 is made slightly smaller than the radius r31 from the axis 321z to the outer peripheral surface 3231 of the partitioning member 323, so that the outer peripheral surface 3231 of the partitioning member 323 comes into contact with the first inner surface 3211, thereby fixing the partitioning member 323 to the light source positioning member 321.

[0056] As described above, the lighting device 1 according to this embodiment includes the main body 2, the lamp unit 3 having the light source arrangement member 321 in which the light source 31 is arranged in the internal space 321s, the arm 4 connecting the lamp unit 3 to the main body 2, and the swing mechanism 6 having a motor and swinging the lamp unit 3 relative to the arm 4. The light source arrangement member 321 has a partition member 323 fixed thereto that partitions the internal space 321s into a first internal space 321s1 on one side in the axial direction and a second internal space 321s2 on the other side in the axial direction. The light source 31 is arranged in the first internal space 321s1, and the second motor (motor) 62 is arranged in the second internal space 321s2. Therefore, the lighting device 1 according to this embodiment can effectively utilize the internal space 321s of the light source arrangement member 321. As a result, the lighting device 1 according to this embodiment does not need to arrange a motor inside the arm, and the arm 4 can be made small, so that the lighting device 1 can be made small.

[0057] In the lighting device 1 according to this embodiment, the arm portion 4 has a first arm internal space 42s and a second arm internal space 43s, a shaft coupling 63 that transmits the driving force of a second drive shaft (drive shaft) 622 of a second motor (motor) 62 is disposed in the first arm internal space 42s, and an electric wire W that electrically connects the second motor 62 and a power source E is disposed in the second arm internal space 43s. Therefore, the lighting device 1 according to this embodiment can effectively utilize the first arm internal space 42s and can effectively utilize the second arm internal space 43s, so that a compact lighting device 1 can be provided.

[0058] In the lighting device 1 according to this embodiment, the light source positioning member 321 has a first inner peripheral surface 3211 located on one side in the axial direction, a second inner peripheral surface 3212 located on the other side in the axial direction, and a step portion 3213 located between the first inner peripheral surface 3211 and the second inner peripheral surface 3212 in the axial direction, and a radius r11 from the axis 321z of the light source positioning member 321 to the first inner peripheral surface 3211 is larger than a radius r12 from the axis 321z to the second inner peripheral surface 3212, so that the first inner peripheral surface 3211 of the light source positioning member 321 contacts the outer peripheral surface 3231 of the partitioning member 323, and the step portion 3213 contacts the surface 323f of the partitioning member 323 on the other side in the axial direction. Therefore, the lighting device 1 according to this embodiment can easily position the partitioning member 323 relative to the light source positioning member 321 in the axial direction by the step portion 3213.

[0059] The lighting device 1 according to this embodiment includes a light source arrangement member 321 made of an aluminum alloy and a partition member 323 made of an aluminum alloy. Therefore, the lighting device 1 according to this embodiment can further improve the cooling efficiency of the light source 31. As a result, the lighting device 1 according to this embodiment does not need to provide a heat sink in the lamp body 3 for cooling the heat from the light source 31, so that a small and inexpensive lighting device 1 can be provided.

[0060] In the lighting device 1 according to this embodiment, the light source positioning member 321 has a second through hole (hole portion) H3 that communicates between the outside and the internal space 321s and a pin P1 inserted into the second through hole 321H3, and the partitioning member 323 has a notch 3232 that extends radially inward from the outer circumferential edge in the radial direction and engages with the pin P1. Therefore, the lighting device 1 according to this embodiment can easily position the partitioning member 323 relative to the light source positioning member 321 in the radial direction by the second through hole 321H3, the pin P1, and the notch 3232.

[0061] In the lighting device 1 of this embodiment, the second motor (motor) 62 has a second drive shaft (drive shaft) 622 and a second motor body (motor body) 621, the second motor body 621 is fixed to the partition member 323, and the second drive shaft 622 is fixed to the arm portion 4 via a shaft coupling 63. When the second motor 62 is driven, the swing mechanism 6 causes the second motor body 621 to rotate relative to the arm portion 4, thereby swinging the lamp portion 3 relative to the main body portion 2 and the arm portion 4.

[0062] In the lighting device 1 of this embodiment, the oscillating mechanism 6 has a shaft coupling (clutch) 63 that rotates the second motor 62 relative to the arm portion 4 when a driving force exceeding the maximum static friction force of the elastic member 632 is applied to the second driving shaft 622 by driving the second motor 62, but does not rotate the third driven shaft 633 when a force exceeding the maximum static friction force of the elastic member 632 is not applied to the second driving shaft 622.

[0063] In the lighting device 1 of this embodiment, the shaft coupling 63 having the function of a clutch has a second driven shaft (motor side driven shaft) 631 provided on the second motor (motor) 62 side and transmitting the driving force of the second drive shaft 622 of the second motor 62, a third driven shaft (arm side driven shaft) 633 provided on the arm portion 4 side and transmitting the driving force of the second drive shaft 622 of the second motor 62, and an elastic member 632 formed in a cylindrical shape, in contact with each of the second driven shaft 631 and the third driven shaft 633, and elastically deformable in the radial direction of the second drive shaft 622.

[0064] In the lighting device 1 according to this embodiment, the arm portion 4 has an arm base member 41, a first arm cover 42, and a second arm cover 43, and the first arm cover 42 and the second arm cover 43 are formed to have the same shape and size. Therefore, the lighting device 1 according to this embodiment can share a mold for manufacturing the first arm cover 42 and the second arm cover 43 that constitute the arm portion 4, so that an inexpensive lighting device 1 can be provided.

[0065] The lighting device 1 according to this embodiment does not have a spot adjustment mechanism that axially moves the lens 34 or the light source 31. Therefore, the lighting device 1 according to this embodiment can provide an inexpensive lighting device 1 by reducing the number of parts such as a motor used in the spot (light distribution angle) adjustment mechanism.

[0066] The rotation mechanism 5 and the swing mechanism 6 of the lighting device 1 according to this embodiment are not provided with a speed reduction mechanism configured with gears or the like. Therefore, the lighting device 1 according to this embodiment can reduce the number of parts of the rotation mechanism 5 and the swing mechanism 6. As a result, an inexpensive lighting device 1 can be provided.

[0067] In the illumination device 1 according to the above embodiment, the light source positioning member 321 has been described as having the first inner circumferential surface 3211, the second inner circumferential surface 3212, and the step portion 3213. However, in the illumination device 1 according to the present embodiment, the light source positioning member 321 is not limited to this. For example, the light source positioning member 321 may have one inner circumferential surface without the step portion 3213. In this illumination device 1, the inner circumferential surface of the light source positioning member 321 and the outer circumferential surface 3231 of the partition member 323 come into contact with each other.

[0068] In this case, in the lighting device 1, the inner circumferential surface of the light source positioning member 321 and the outer circumferential surface 3231 of the partitioning member 323 come into contact with each other. Therefore, in the lighting device 1 according to this embodiment, heat generated in the light source 31 can be released to the outside via the partitioning member 323 and the light source positioning member 321, thereby cooling the light source 31.

[0069] Second embodiment The lighting device 1 according to the above embodiment has been described as including the second driven shaft 631, the elastic member 632, and the third driven shaft 633, and the shaft coupling 63 having a clutch function. However, the shaft coupling 63 of the lighting device 1 according to the present invention is not limited to this. For example, the lighting device 1A according to the second embodiment has a shaft coupling (clutch) 63A described below, which is different from the shaft coupling 63 of the lighting device 1 according to the first embodiment.

[0070] Fig. 6 is an exploded perspective view of a portion of the lighting device 1A according to the second embodiment. Fig. 7 is a cross-sectional view of a portion of the lighting device 1A shown in Fig. 6. Fig. 8 is a cross-sectional view of a portion of the lighting device 1A shown in Fig. 6. Differences between the configuration of the lighting device 1A according to the present embodiment and the configuration of the lighting device 1 according to the first embodiment will be described below, and the same configuration will be denoted by the same reference numerals and description thereof will be omitted.

[0071] The swing mechanism 6A of the lighting device 1A according to this embodiment includes a second bracket 61, a second motor (motor) 62, a shaft coupling 63A, and a pair of joints 64, as shown in FIG.

[0072] As shown in FIG. 6, the shaft coupling 63A has a second driven shaft 631A, a third driven shaft 633A, a plate-like member 634, and a spring 635, and functions as a clutch.

[0073] The second driven shaft 631A is formed, for example, to extend in the first direction X, and has a first end 6311A located on one side of the first direction X and fixed to the second driving shaft 622, and a second end 6312A located on the other side of the first direction X. The second end 6312A according to this embodiment is formed in a disk shape, and has a first engagement portion 12A formed by alternately arranging first convex portions protruding toward one side of the first direction X and first concave portions recessed toward the other side of the first direction X in the first direction X on the outer circumferential edge in the first direction X.

[0074] The third driven shaft 633A has a plate-shaped first portion 6331A and a cylindrical second portion 6332A. The first portion 6331A is fixed to the arm base member 41 by a plurality of seventh screws N7. The second portion 6332A according to this embodiment has a second engagement portion 32A that can be engaged with the first engagement portion 12A. The second engagement portion 32A has a second recess that engages with the protrusion of the first engagement portion 12A and a second protrusion that engages with the recess of the first engagement portion 12A, which are alternately arranged along the circumferential direction. The second recess of the second engagement portion 32A is recessed toward one side in the first direction X. The second protrusion of the second engagement portion 32A protrudes toward the other side in the first direction X.

[0075] The plate-shaped member 634 is, for example, a plate spring formed to be deformable in the first direction X. The plate-shaped member 634 has an attachment portion 6341 attached to the arm base member 41 via the third driven shaft 633A by a plurality of seventh screws N7, a contact portion 6342 that contacts the spring 635, and a step portion 6343 located between the attachment portion 6341 and the contact portion 6342.

[0076] The spring 635 is, for example, a coil spring, and extends in the first direction X. The spring 635 generates a predetermined elastic force in the first direction X by being compressed in the first direction X. The other end of the spring 635 in the first direction X contacts the first end 6311A of the second driven shaft 631A. Meanwhile, the one end of the spring 635 in the first direction X contacts the contact portion 6342 of the plate-shaped member 634. The spring 635 presses the second driven shaft 631A toward the third driven shaft 633A in the X-axis positive direction with a predetermined elastic force as shown by the arrow F in FIG. 8 by being compressed in the first direction X. Then, the spring 635 is biased in this manner, so that the disc portion C2 of the second portion 6332A engages with the recess C1 of the second end 6312A.

[0077] In this embodiment, when a driving force exceeding the pressing force of the spring 635 is applied to the second driving shaft 622A by driving the second motor 62, the first engagement portion 12A slides relative to the second engagement portion 32A, thereby rotating the second motor 62 relative to the arm portion 4. On the other hand, when a force exceeding the pressing force of the spring 635 is not applied to the second driving shaft 622A, the shaft coupling 63A having the function of a clutch rotates the second motor 62 relative to the arm portion 4.

[0078] Furthermore, in the case where a third party applies excessive force from outside to the lamp unit 3 in an attempt to change the position of the lamp unit 3 relative to the main body unit 2 and the arm unit 4, the shaft coupling (clutch) 63A according to this embodiment rotates the lamp unit 3 relative to the arm unit 4 by causing the first engagement part 12A to slip relative to the second engagement part 32A. At this time, since no excessive force is applied from outside to the second driven shaft 631A, it is possible to prevent excessive force from being applied to the second drive shaft 622 of the second motor 62.

[0079] The shaft coupling (clutch) 63A of the lighting device 1A according to this embodiment is composed of a second driven shaft 631A, a third driven shaft 633A, a plate-like member 634, and a spring 635. Therefore, the shaft coupling 63A according to this embodiment does not require a plurality of elastic members 632, and can be easily assembled. Furthermore, the shaft coupling 63A according to this embodiment can reduce deterioration of the clutch function over time.

[0080] The above has been described based on the embodiments of the lighting devices 1 and 1A according to the present invention, but the present invention is not limited to the embodiments, and it goes without saying that various modifications are possible within the scope of the present invention. The present invention also includes configurations in which the components of the above-mentioned embodiments are appropriately combined. Such modifications that do not depart from the scope of the present invention are also included in the technical scope of the present invention, and this will be clear to those skilled in the art from the description of the claims. [Explanation of symbols]

[0081] 1, 1A lighting device, 2 main body, 3 lamp body, 31 light source, 321 light source arrangement member, 321H3 second through hole (hole), 321s internal space, 3211 first inner circumferential surface, 321s1 first internal space, 3212 second inner circumferential surface, 321s2 second internal space, 3213 step portion, 323 partition member, 3231 outer circumferential surface, 3232 notch, 4 arm portion, 41 arm base member, 42 first arm cover, 42s first arm internal space, 43 second arm cover, 43s second arm internal space, 6, 6A swing mechanism, 63, 63A shaft coupling (clutch), 62 second motor (motor), 621 second motor body (motor body), 622 Second driving shaft (driving shaft), 631 second driven shaft (motor side driven shaft), 632 elastic member, 633 third driven shaft (arm side driven shaft), r11 radius from shaft center to first inner peripheral surface, r31 radius from shaft center to second inner peripheral surface, P1 pin, W electric wire

Claims

1. A main body portion, a light body portion having a light source arrangement member in which a light source is arranged in an internal space; an arm portion that connects the light body portion to the main body portion; a swing mechanism having a motor and configured to swing the lamp body relative to the arm; Equipped with a partition member is fixed to the light source arrangement member to partition the internal space into a first internal space on one side in the axial direction and a second internal space on the other side in the axial direction; The light source is disposed in the first internal space, The motor is disposed in the second internal space. Lighting equipment.

2. The arm portion has a first arm internal space and a second arm internal space, a shaft coupling for transmitting a driving force of a drive shaft of the motor is disposed in the first arm internal space, An electric wire electrically connecting the motor and a power source is disposed in the second arm internal space.

10. The lighting device of claim 1.

3. an inner circumferential surface of the light source positioning member and an outer circumferential surface of the partition member are in contact with each other; 10. The lighting device of claim 1.

4. the light source positioning member has a first inner circumferential surface located on one side in the axial direction, a second inner circumferential surface located on the other side in the axial direction, and a step portion located between the first inner circumferential surface and the second inner circumferential surface in the axial direction, a radius from an axis center of the light source positioning member to the first inner circumferential surface is larger than a radius from the axis center to the second inner circumferential surface, a first inner circumferential surface of the light source positioning member contacts an outer circumferential surface of the partition member, The step portion contacts a surface of the partition member on the other side in the axial direction.

10. The lighting device of claim 1.

5. the light source positioning member has a hole portion communicating between the outside and an internal space and a pin inserted into the hole portion, The partition member has a notch extending radially inward from an outer circumferential edge in the radial direction and engaging with the pin.

5. The lighting device according to claim 3 or 4.

6. The motor has a motor body and a drive shaft. The motor body is fixed to the partition member, The drive shaft is fixed to the arm portion, When the motor is driven, the motor body is rotated by the swing mechanism, thereby swinging the lamp body.

3. The lighting device according to claim 1 or 2.

7. a clutch which rotates the motor body relative to the arm when a driving force exceeding the maximum static friction force of the elastic member is applied to the drive shaft by driving the motor, and which does not rotate the arm-side driven shaft when a force exceeding the maximum static friction force of the elastic member is not applied to the drive shaft; 7. The lighting device according to claim 6.

8. The clutch is a motor-side driven shaft provided on the motor side and configured to transmit a driving force of the drive shaft of the motor; an arm-side driven shaft provided on the arm portion side and configured to transmit a driving force of the drive shaft of the motor; an elastic member formed in a cylindrical shape, in contact with each of the motor side driven shaft and the arm side driven shaft, and elastically deformable in a radial direction of the drive shaft; having 8. An illumination device according to claim 7.

9. The arm portion has an arm base member, a first arm cover, and a second arm cover, The first arm cover and the second arm cover are formed to have the same shape and size.

3. The lighting device according to claim 1 or 2.

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