JP2017092004A - Light control unit and illuminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light control unit and an illuminating device which can enhance versatility thereof at a low cost.SOLUTION: A light control unit 178 is used for an illuminating device which has a plurality of LEDs as light sources and controls distribution of light emitted from the plurality of LEDs. The light control unit 178 has: a lens body 177 formed by integrating a plurality of resin lenses 209, which are arranged corresponding to respective LEDs and reflect or deflect the light emitted from corresponding LEDs, through a connection section 210; and a resin lens cover 179 which is arranged at a light emitting side of the lens body 177. The lens cover 179: has a diffusion section 213b which diffuses the light emitted from the lenses 209; and can be attached to and detached from the lens body 177.SELECTED DRAWING: Figure 21

Description

  The present invention relates to a light control unit that controls light distribution from a light source, and an illumination device including the light control member.

In recent years, with the growing awareness of the environment, LED lighting devices that use LEDs with excellent power savings as light sources have come to be actively used, and LEDs are also used in spotlights that are attached to duct rails. Yes.
The spotlight includes a lens that controls the light distribution of the light emitted from the light source in order to highlight and illuminate exhibits and products. The lens is disposed to face the LED of the light source unit (for example, Patent Documents 1 and 2).
The lens is designed so as to obtain desired orientation characteristics. In Patent Document 1, the entrance surface is subjected to a diffusion treatment, and in Patent Document 2, the exit surface is made uneven.

Japanese Patent No. 5380052 JP 2011-96712 A

There are various uses of the lighting device, and in the lighting device using the resin lens disclosed in Patent Documents 1 and 2, there is a problem that it is costly to give versatility so as to correspond to various uses. There is.
An object of the present invention is to provide a light control unit and a lighting device that can be versatile at low cost.

A light control unit according to the present invention is used in a lighting device including a plurality of LEDs as a light source and controls light distribution of light emitted from the plurality of LEDs. A lens body in which a plurality of resin lenses, which are provided and reflect or refract light emitted from the corresponding LED, are integrated by a connecting portion, and a resin lens disposed on the light emission side of the lens body The lens cover has a diffusing portion for diffusing the light emitted from the lens, and is detachable from the lens body.
An illumination device according to the present invention includes a plurality of LEDs and the light control unit that controls light distribution of light emitted from the plurality of LEDs.

  According to the above configuration, since the lens cover that can be manufactured at low cost is replaceable, the light control unit and the lighting device can be provided with versatility at a low cost.

It is a perspective view of the state where the illuminating device concerning an embodiment was attached to a duct rail. It is the perspective view which looked at the illuminating device which concerns on embodiment from the back side. It is the figure which looked at the illuminating device which concerns on embodiment from the back side. It is the figure which looked at the cross section of the illuminating device which concerns on embodiment from the side. It is the perspective view which looked at the section of the circuit box concerning an embodiment from the back side. It is a figure of the case which concerns on embodiment, (a) is the figure seen from the back side, (b) is the perspective view which looked at the cross section from the back side side. It is a figure of the fixed plug side cover which concerns on embodiment, (a) is the perspective view seen from the back side, (b) It is the perspective view reversed front and back, (c) is the figure seen from the front side . It is the figure of the electrode plug side cover body which concerns on embodiment, (a) is the perspective view seen from the back side, (b) is the perspective view reversed front and back. It is a perspective view of the fixed plug which concerns on embodiment. It is a disassembled perspective view of the electrode plug which concerns on embodiment. It is a figure of the connection unit which concerns on embodiment, (a) is the perspective view which reversed the front and back in the state which removed one input cable, (b) attached an electrode plug, one connection electrode and the electrode plug side It is a perspective view in the state where a lid was removed. (A) is a perspective view of the AC circuit which concerns on embodiment, (b) is a perspective view of the DC circuit which concerns on embodiment. It is a perspective view of the arm concerning an embodiment. It is sectional drawing of the arm which concerns on embodiment. It is a disassembled perspective view of the arm which concerns on embodiment. It is the perspective view which reversed the front and back of the outer cylinder member which concerns on embodiment. It is a perspective view of the inner cylinder member concerning an embodiment. It is a disassembled perspective view of the lamp body which concerns on embodiment. It is a perspective view of the heat sink concerning an embodiment. It is the figure which looked at the heat sink which concerns on embodiment from the thermal radiation part side. It is a disassembled perspective view of the light control unit which concerns on embodiment. It is a figure of the main cover which concerns on embodiment, (a) is the figure seen from the opening side, (b) is sectional drawing seen from the side. It is a cross-sectional enlarged view of the connection part of the lamp body and arm which concerns on embodiment. It is sectional drawing of the light control unit of another shape.

<Overview>
A light control unit according to an aspect of the embodiment is used in an illumination device including a plurality of LEDs as a light source, and controls light distribution of light emitted from the plurality of LEDs. A lens body in which a plurality of lenses made of resin that are provided correspondingly and reflect or refract light emitted from the corresponding LED are integrated by a connecting portion, and a resin disposed on the light emitting side of the lens body The lens cover has a diffusion portion that diffuses light emitted from the lens, and is detachable from the lens body.
In the light control unit according to another aspect of the embodiment, the lens has a rotating body shape having the optical axis of the corresponding LED as a rotation center axis. Thereby, desired light distribution characteristics can be obtained.
In the light control unit according to another aspect of the embodiment, the light emitting surface of the lens and the light incident surface of the lens cover are in contact with each other by design. Thereby, stable optical characteristics can be obtained.
In the light control unit according to another aspect of the embodiment, the lens has an inclined portion with a gradually increasing diameter and a straight portion with a constant diameter along the rotation center axis, and the inclination of the lens The side with the small diameter in the part is arranged on the LED side. Thereby, desired light distribution characteristics can be easily obtained.
In the light control unit according to another aspect of the embodiment, the outer peripheral surface of the inclined portion is a total reflection surface that reflects light emitted from the corresponding LED toward the outer peripheral surface. Thereby, the light radiate | emitted from LED can be utilized effectively.

1. Overall Configuration An outline of the illumination device 1 according to the present embodiment will be described mainly with reference to FIGS. 1 and 2.
The illumination device 1 is attached to the duct rail 2 and used as a spotlight. For example, it is used to effectively illuminate products displayed in a store. The lighting device 1 includes a circuit box 3 attached to the duct rail 2, a lamp body 4 having a plurality of LEDs as a light source, and an arm 5 that connects the circuit box 3 and the lamp body 4.
In other words, the lighting device 1 includes the lamp body 4 having the LED unit 171, the circuit box 3 having the lighting circuit 101 for lighting the LED unit 171, and the lamp body 4 and the circuit box 3 so that the irradiation direction can be adjusted. And the arm 5 for electrically connecting the LED unit 171 and the lighting circuit 101.

Here, the direction orthogonal to the installation surface on which the duct rail 2 is arranged (the “X” direction in FIG. 1) is simply “front and back direction”, and the side closer to the installation surface is separated from the installation side. Let each side be the front side. Further, the direction parallel to the direction in which the duct rail 2 extends (the “Y” direction in FIG. 1) is simply referred to as the “longitudinal direction”, and the direction (“Z” in FIG. 1) perpendicular to the front and back directions and the longitudinal direction. Direction)) is simply referred to as “short direction”. The front and back directions coincide with the direction in which the lighting device 1 is attached to the duct rail 2 and the direction in which it is removed, and are also simply referred to as the attachment direction to the duct rail.
The duct rail 2 has a T-shaped fixed groove 11 having an opening on a surface opposite to the installation surface, and a pair of power supply pieces 13 a and 13 b for supplying power to the lighting device 1 is provided on the fixed groove 11. Has inside. The power feeding pieces 13 a and 13 b are provided along the longitudinal direction of the fixed groove 11.

The arm 5 is connected to the circuit box 3 so as to be rotatable with respect to the circuit box 3 with the front and back directions as rotation axes. The arm 5 is connected to the arm 5 so as to be rotatable about an arbitrary direction in the surface). In addition, the surface orthogonal to the front and back direction includes the direction orthogonal to the front and back direction, and the lamp body 4 is simply orthogonal to the front and back direction with respect to the arm 5 in any direction in the surface orthogonal to the front and back direction. Also called direction.
In the state of the lighting device 1 shown in FIG. 1 and the like, the rotation axis of the lamp body 4 with respect to the arm 5 is a direction parallel to the short direction, and the center axis of the lamp body 4 is parallel to the longitudinal direction. That is, the main emission direction of the light of the lighting device 1 and the extending direction of the duct rail 2 coincide. This state (the posture of the lamp body) is an example, but in the specification, the state may be described assuming this state.

2. The circuit box will be described mainly with reference to FIGS.
The circuit box 3 is configured to be movable along the longitudinal direction of the duct rail 2. The circuit box 3 rotatably connects the arm 5 with a direction (front and back direction) orthogonal to the duct rail 2 (the same on the installation surface) as a rotation axis.
The circuit box 3 has a lighting circuit 101 for generating LED lighting power inside the case 21. The circuit box 3 has an electrode plug 27 and a fixed plug 29 arranged in the longitudinal direction on the duct rail 2 side of the case 21. Thereby, the circuit box 3 is attached to the duct rail 2. The electrode plug 27 has a function of receiving power from the duct rail 2. The circuit box 3 has a connection unit 91 electrically connected to the electrode plug 27 inside the case 21 on the front side of the electrode plug 27, and the connection unit 91 and the lighting circuit 101 (AC circuit 103) are input. They are connected by a cable 97 (see FIG. 11A).

The lighting circuit 101 is formed by mounting a plurality of circuit components constituting the lighting circuit 101 separately on a plurality of circuit boards. The circuit board as an example of the plurality of sheets includes an AC circuit board 109 on which an AC circuit component 107 for converting AC power received by the electrode plug 27 into DC power is mounted, and the converted DC power is used for LED lighting DC. It is two sheets with DC circuit board 113 which mounts DC circuit component 111 for converting into electric power.
Note that a circuit for converting AC power (commercial power) into DC power is an AC circuit 103, and a circuit component for the AC circuit 103 is an AC circuit component 107. A circuit for converting DC power to DC power for LED lighting is a DC circuit 105, and a circuit component for the DC circuit 105 is a DC circuit component 111.
The AC circuit 103 is arranged on the front side of the electrode plug 27, particularly the front side of the connection unit 91, and the DC circuit 105 is arranged on the front side of the fixed plug 29.
The circuit box 3 accommodates a connecting body 42 for connecting to the case-side connecting body 123 of the arm 5.
Hereinafter, each part will be described.

(1) Case A description will be given mainly with reference to FIGS.
The case 21 is, for example, a resin box. Although the conventional case is made of metal, the case 21 itself becomes an insulator by making the case 21 resin. Thereby, electrical safety can be improved. Moreover, this can reduce the weight and cost.
The case 21 has a rectangular parallelepiped shape that is long in the longitudinal direction. The case 21 has a shape in which a cross section perpendicular to the longitudinal direction is close to a square shape. The case 21 has a case body 23 whose back side is open (opened) and a lid body 25 that closes the opening. The lid body 25 is composed of an electrode plug side lid body 25a and a fixed plug side lid body 25b that occupy the opening in half in the longitudinal direction. The electrode plug-side cover 25a is provided with an electrode plug 27 that functions as a mechanical fixing means and an electrical connection means, and the fixed plug-side cover 25b has a fixed plug 29 that functions as a mechanical fixing means. Is provided.

(1-1) Case Main Body Description will be made mainly with reference to FIGS. 3, 5, and 6.
The case body 23 is provided with a rectangular front wall 31 that is long in the longitudinal direction, a pair of short side walls 33 a and 33 b that are erected from the short side of the front wall 31 to the back side, and a long side of the front wall 31 that is erected from the long side. It has a pair of long side walls 33c and 33d. The short side walls 33a and 33b and the long side walls 33c and 33d are also simply referred to as a side wall 33.
The case main body 23 has a plurality of lid fixing portions 35 inside. The lid fixing part 35 is for fixing the electrode plug side lid 25a and the fixed plug side lid 25b to the case body 23 directly or indirectly. As an example of fixing, a screw body is used, and the lid fixing portion 35 includes a boss portion 35a and a screw hole 35b provided in the boss portion 35a.

The case body 23 includes a support portion 37 that supports the lid body 25 from the front side. The support portion 37 as an example is configured by a step formed on the inner peripheral surface of the back side end portion of the side wall 33.
The case main body 23 has a housing portion 39 on the front wall 31 for housing a coupling body 42 (nut body 42 a) for coupling with the arm 5. The accommodating portion 39 is formed inside a protruding portion 41 in which a part of the front wall 31 is bent and protrudes to the front side. The protruding tip wall 41 a of the protruding portion 41 has a through hole 41 b for receiving a screw body that is an example of the case side connecting body 123.
In addition, the arm 5 is connected with the protrusion part 41, and this part is a connection part. A rotation restricting portion 41 d that restricts the rotation of the arm 5 is provided on the protruding tip wall 41 a and the protruding peripheral wall 41 c of the protruding portion 41.
The case body 23 has a support portion 43 on the side wall 33 that supports a connection unit 91 described later from the front side. The support part 43 as an example is comprised by the several rib (it is what is called a "vertical rib") 43a which protrudes inside and is extended in the front and back.

(1-2) Fixed plug side cover body It demonstrates mainly using FIG.5 and FIG.7.
The fixed plug side cover 25b includes a plate-like portion 51 mainly having a cover function, a case fixing portion 53 for fixing to the case body 23, a plug mounting portion 55 for mounting the fixed plug 29, and the duct rail 2. , Positioning protrusions 57 and 58 for positioning the circuit box 3 and a DC circuit accommodating portion 59.

The plate-like portion 51 has a rectangular shape that is long in the longitudinal direction when viewed from the duct rail 2 side. The front end 51a of the plate-like portion 51 is supported in contact with the support portion 37 of the case body 23. The case fixing portion 53 is constituted by a through hole 53a that penetrates the plate-like portion 51 on the front and back sides. The through hole 53a is provided in the boss portion 53b. The boss portion 53b extends from the plate-like portion 51 to the front side. The case fixing portion 53 is provided at a total of two locations on the end portion in the longitudinal direction of the case main body 23 and on both ends in the lateral direction. Note that the screw body 56 inserted through the through hole 53a is screwed into the screw hole 35b of the lid fixing portion 35 of the case body 23 (see FIGS. 3 and 6).
The plug attachment portion 55 is configured by a boss portion 55a that is an example of a protrusion provided substantially at the center of the plate-like portion 51, and a screw hole 55b formed in the boss portion 55a. The boss portion 55a has a columnar shape with a narrow protruding tip.

The positioning protrusions 57 and 58 are constituted by projecting portions that project from the plate-like portion 51 to the duct rail 2 side. In a state where the circuit box 3 is attached to the duct rail 2, the projecting portion comes from the first projecting portions 57 a and 58 a that abut the surface of the duct rail 2 or project to the vicinity of the surface, and the first projecting portions 57 a and 58 a. It has the 2nd protrusion parts 57b and 58b which protrude so that it may approach into the inside of the fixed groove | channel 11 of the duct rail 2. As shown in FIG.
The positioning protrusions 57 and 58 are provided so that the second protrusions 57b and 58b are located at both ends in the longitudinal direction of the plate-like portion 51 and at substantially the center in the short direction. The second protrusions 57b and 58b have a rectangular shape when viewed from the duct rail 2 side, and the longitudinal direction of the second protrusions 57b and 58b coincides with the short direction of the circuit box 3.

Instead of the conventional duct rail guide, when the circuit box 3 is viewed from the longitudinal direction, the left and right substantially symmetrical positioning projections 57 and 58 are provided. The direction of is free, and the mounting work becomes easy.
The first protrusions 57a and 58a also have a function as a stopper for restricting an operation range of an operation lever 73b (see FIG. 3) for operating a fixed plug 29 described later. The stopper of the operation lever 73b does not necessarily have to be shared with the positioning protrusions 57 and 58. For example, a stopper that does not enter the fixing groove 11 of the duct rail 2 may be provided separately from the positioning protrusions 57 and 58. Good.

  The DC circuit housing portion 59 is configured by a cylindrical enclosure 59 a that protrudes from the inner portion of the plate-like portion 51 where the front-side peripheral end portion 51 a is left. The enclosure 59a is provided at the periphery of the plate-like portion 51 having a rectangular shape that is long in the longitudinal direction when viewed from the front side, and has a rectangular cylindrical shape. DC circuit board fixing parts 61 and 63 for fixing the DC circuit board 113 are provided inside the DC circuit housing part 59 using positioning protrusions 57 and 58. That is, the first protrusions 57a and 58a and the second protrusions 57b and 58b have a hollow shape having openings 57c and 58c on the front side.

The DC circuit board fixing portions 61, 63 are provided on the surfaces of the protrusions 61a, 63a that protrude from the surface of the second protrusions 57b, 58b to the front side beyond the plate-like portion 51, and the protrusions 61a, 63a. The screw holes 61b and 63b are configured. Accordingly, the screw holes 61b and 63b can be lengthened even when the DC circuit board 113 is brought close to the plate-like portion 51 and the plate-like portion 51 is thinned.
The DC circuit housing portion 59 in which the DC circuit 105 is housed is filled with a heat conductive potting material (not shown). The thermally conductive potting material is in contact with the DC circuit board 113 and the DC circuit component 111, and the heat of the DC circuit board 113 and the DC circuit component 111 is conducted to the fixed plug side lid 25b through the thermally conductive potting material. .

(1-3) Electrode Plug Side Lid The description will be made mainly with reference to FIGS.
The electrode plug-side lid 25a has a plate-like portion 65 mainly having a lid function, a case fixing portion 67 for fixing to the case body 23, and a plug attachment portion 69 for attaching the electrode plug 27 (see FIG. 3). And a positioning protrusion 70 for positioning the circuit box 3 with respect to the duct rail 2 and a restricting portion 71 for restricting the operating range of the operating lever 81d (see FIG. 3) for operating the electrode plug 27.
The plate-like portion 65 has a rectangular shape that is long in the longitudinal direction when viewed from the duct rail 2 side. A front end portion 65 a of the plate-like portion 65 is supported in contact with the support portion 37 of the case body 23. The electrode plug-side cover 25a has a fitting portion 65b at the inner peripheral portion (inner portion) of the peripheral end portion 65a on the surface of the plate-like portion 65. The fitting portion 65 b protrudes from the inner peripheral portion to the front side and is fitted to the inner surface of the case body 23.

The case fixing portion 67 is configured by a through hole 67a that penetrates the plate-like portion 65 on the front and back sides. The through hole 67 a is provided in two boss portions 67 b provided in the plate-like portion 65. The bosses 67b are provided at two locations at the center in the longitudinal direction of the case main body 23 (on the side where the fixed plug-side lid 25b of the electrode plug-side lid 25a is present) and at the end in the short direction. It has been. The screw body 68 (see FIG. 3) that passes through the through hole 67a is screwed into the screw hole 35b of the lid fixing portion 35 of the case body 23 (see FIG. 6).
The plug attachment portion 69 is configured by a through hole 69 a provided in the approximate center of the plate-like portion 65. The fixing structure will be described when the electrode plug 27 is described.
The positioning protrusion 70 is constituted by a protruding portion that protrudes from the plate-like portion 65 to the duct rail 2 side. In a state where the circuit box 3 is attached to the duct rail 2, the protrusions are a first protrusion 70 a that abuts on the surface of the duct rail 2 or protrudes to the vicinity of the surface, and the duct rail 2 from the first protrusion 70 a. And a second protrusion 70b that protrudes so as to enter the inside of the fixed groove 11.

The positioning protrusion 70 is provided so that the second protrusion 70b is positioned at the substantially opposite center of the short direction, which is the end of the plate-like portion 65 opposite to the fixed plug side lid 25b in the longitudinal direction. The second protrusion 70b has a rectangular shape when viewed from the duct rail 2 side, and the longitudinal direction of the second protrusion 70b coincides with the short direction of the circuit box 3.
The first protrusion 70a also has a function as a stopper that restricts the operation range of an operation lever 81d (see FIG. 3) for operating a fixed plug 29 described later. The stopper of the operation lever 81d does not necessarily have to be used as the positioning protrusion 70. For example, a stopper that does not enter the fixing groove 11 of the duct rail 2 may be provided separately from the positioning protrusion 70.
The restricting portion 71 is provided at the end of the plate-like portion 65 on the side of the fixed plug side lid body 25b in the longitudinal direction and substantially at the center in the short direction. The restriction portion 71 has a rectangular shape when viewed from the duct rail 2 side, and the longitudinal direction of the restriction portion 71 coincides with the short direction of the circuit box 3.
The restricting portion 71 is configured by a protruding portion 71 a that abuts on the surface of the duct rail 2 or protrudes to the vicinity of the surface in a state where the circuit box 3 is attached to the duct rail 2. That is, the restricting portion 71 has substantially the same configuration as the first protruding portion 70a that does not have the second protruding portion 70b in the positioning protrusion 70. Here, the restricting portion 71 is provided adjacent to the positioning projection 57 of the fixed plug side lid 25b.

(2) Plug (2-1) Fixed plug Description will be made mainly with reference to FIGS.
The fixed plug 29 has an attachment mechanism to the duct rail 2. The fixed plug 29 includes a rotating part 73 that is partially inserted into the fixed groove 11 of the duct rail 2 and a pair of extending pieces 75 a and 75 b that are provided in a portion of the rotating part 73 that is positioned inside the fixed groove 11. Are integrated.
The rotating part 73 has a through hole 77 extending in the axial direction at the central axis. The rotating portion 73 has an intermediate wall 73a that protrudes toward the central axis at the approximate center in the extending direction of the through hole 77 to reduce the opening area.
A boss portion 55a (see FIG. 7) of the plug attachment portion 55 is inserted on the side closer to the plate-like portion 51 of the fixed plug side lid body 25b than the intermediate wall 73a in the through hole 77. A screw body 78 that is screwed into the screw hole 55b (see FIG. 7) of the plug mounting portion 55 is accommodated on the side closer to the duct rail 2 than the intermediate wall 73a in the through hole 77.

The pair of extending pieces 75a and 75b extend from the rotating portion 73 in a direction orthogonal to the central axis and in a direction opposite to each other. The pair of extending pieces 75 a and 75 b function as engaging pieces that engage with the fixing groove 11 of the duct rail 2, and the fixing plug 29 has the engaging pieces as a mechanism for attaching to the duct rail 2.
An operation lever 73b for the fixed plug 29 is provided integrally with the rotating portion 73. The operating lever 73b is for operating the rotating portion 73 around the rotation axis. The operating lever 73b is provided in a portion closer to the plate-like portion 51 of the fixed plug side lid 25b than the pair of extending pieces 75a and 75b in the rotating portion 73. The operation lever 73b is provided along the fixed plug side lid 25b with a space from the fixed plug side lid 25b (see FIG. 1).
When the operation lever 73b is viewed from the duct rail 2 side when the fixed plug 29 is viewed, the operation lever 73b extends in a direction perpendicular to the extending direction of the pair of extending pieces 75a and 75b, and then in a direction parallel to the pair of extending pieces 75a and 75b. It has a bent L shape. When the circuit box 3 is viewed from the short side, the operation lever 73b and the first protrusions 57a and 58a of the positioning protrusions 57 and 58 overlap in the front and back direction.

(2-2) Electrode Plug Description will be made mainly with reference to FIGS.
The electrode plug 27 has an attachment mechanism to the duct rail 2 and a power reception mechanism from the duct rail 2. The electrode plug 27 includes a rotating body 80, a pair of electrode plates 83 and 83 that are electrically connected to the duct rail 2, and an electrode plate fixing body 85 that fixes the pair of electrode plates 83 to the rotating body 80.
The rotating body 80 has a rotating body main body 81 that is mostly disposed outside the case 21 and a terminal block 82 disposed inside the case 21. The rotating body 81, the terminal block 82, the electrode plate 83, and the electrode plate fixing body 85 are integrated by a screw body 87.
The rotating body 81 includes a through hole 81a penetrating in a direction orthogonal to the duct rail 2 (front and back direction), a pair of extending pieces 81b and 81c engaged with the fixing groove 11 of the duct rail 2, and an electrode plug side lid. And a cylindrical portion 81e that fits into a circular through hole 69a of 25a.
The through hole 81a has a square shape when viewed from the duct rail 2 side. The through hole 81a is provided so that two opposing sides constituting the square shape are located on a virtual line connecting the pair of extending pieces 81b and 81c. A pair of electrode plates 83 and 83 are arranged on opposing surfaces located on the imaginary line connecting the extending pieces 81b and 81c in the through hole 81a.
The pair of extending pieces 81b and 81c extend in directions that are orthogonal to the through-holes 81a and are opposite to each other. The pair of extending pieces 81 b and 81 c function as engaging pieces that engage with the fixing groove 11 of the duct rail 2, and the electrode plug 27 has the engaging pieces as an attachment mechanism to the duct rail 2.

The terminal block 82 constitutes an electrical connection part with the connection unit 91. The terminal block 82 includes a through hole 82a penetrating in a direction orthogonal to the duct rail 2 (front and back direction), a disk portion 82c having a pair of chipped portions 82b, and a pedestal portion 82d extending from the center front side of the disk portion 82c. Have
The through hole 82a penetrates the disk part 82c and the pedestal part 82d. When the disk part 82c is attached to the electrode plug side cover 25a, the disk part 82c contacts or approaches the surface of the plate-like part 65 of the electrode plug side cover 25a. The chipped portion 82b is provided in a portion facing the through hole 82a. The pedestal part 82d protrudes in a square shape from the through hole 82a side of the chipped part 82b of the disk part 82c. The side surface of the pedestal portion 82d and the portion of the chipped portion 82b on the side of the through hole 82a are substantially flush with each other, and the electrode plate 83 is disposed on the flush portion.
The electrode plates 83 and 83 have a rectangular thin plate shape and are disposed in the through holes 81a and 82a of the rotating body 80 except for both end portions (83a and 83b). One end of the electrode plates 83 and 83 near the duct rail 2 is bent outward to constitute a pair of power receiving pieces 83a that come into contact with the power feeding pieces 13a and 13b of the duct rail 2. The pair of power receiving pieces 83 a and 83 a are extended pieces that extend into the fixing groove 11 of the duct rail 2 and constitute a power receiving mechanism that receives power from the duct rail 2.
The other end portions of the electrode plates 83 and 83 are exposed on the side surface of the pedestal portion 82d of the terminal block 82 to constitute a connection terminal 83b.

The electrode plate fixing body 85 has a cylindrical shape, and a main body side insertion portion 85a inserted into the through hole 81a of the rotating body main body 81 and a terminal side insertion portion 85b inserted into the through hole 82a of the terminal block 82 are integrated. The screw hole for the screw body 87 is provided in the main body side insertion portion 85a and the terminal side insertion portion 85b.
The electrode plate fixing body 85 is configured such that the main body side insertion portion 85a and the terminal side insertion portion 85b are inserted into the through holes 81a and 82a in a state where the electrode plates 83 and 83 are arranged in the through holes 81a and 82a of the rotating body 80. The electrode plates 83 and 83 are fixed by being integrated with the screw body 87.
An operation lever 81d for the electrode plug 27 is integrally provided on the rotating body 81. The operation lever 81d is for operating the rotating body 80 around the rotation axis. The operation lever 81d is provided in a portion closer to the plate-like portion 65 side of the electrode plug-side lid body 25a than the pair of extending pieces 81b, 81c in the rotating body main body 81. The operation lever 81d is provided along the electrode plug side lid 25a with a space from the electrode plug side lid 25a (see FIG. 1).
The operation lever 81d extends in a direction parallel to the extending direction of the pair of extending pieces 81b and 81c after extending in a direction orthogonal to the extending direction of the pair of extending pieces 81b and 81c when the electrode plug 27 is viewed from the duct rail 2 side. It has a bent L shape. When the circuit box 3 is viewed from the short side, the operation lever 81d overlaps the first protrusion 70a and the restricting portion 71 of the positioning protrusion 70 in the front and back direction.

(2-3) Attachment to a duct rail It demonstrates mainly using FIG.1, FIG3 and FIG.5.
When the electrode plug 27 and the fixed plug 29 are attached to the duct rail 2, the electrode plate fixing body 85 and the rotating member are rotated in a state where the extending direction of the extending pieces 81 b, 81 c, 75 a, 75 b coincides with the fixing groove 11 of the duct rail 2. The distal end portion of the body 80 and the distal end portion of the rotating portion 73 are inserted into the fixed groove 11, and then the rotating body 80 and the rotating portion 73 are rotated 90 degrees by the operation levers 81d and 73b.
Thereby, the extending direction of the extending pieces 81b, 81c, 75a, 75b is orthogonal to the extending direction of the fixed groove 11, and the extended pieces 81b, 81c, 75a, 75b are engaged with the fixed groove 11.
Further, the power receiving pieces 83 a and 83 a of the electrode plug 27 are in contact with the power feeding pieces 13 a and 13 b of the duct rail 2. In addition, what is necessary is just to perform in the procedure opposite to the operation | work at the time of attachment when removing the electrode plug 27 and the fixed plug 29. FIG.
When the operation portion of the operation lever 73b (the portion to which the operator applies force when attaching and detaching) and the operation portion of the operation lever 81d are fixed to the duct rail 2, respectively, the long side walls 33c and 33d of the case 21 are fixed. It is located on one side (the long side wall 33c), and when it is removed from the duct rail 2, it is located on either one of the short side walls 33a and 33b at both ends in the longitudinal direction of the case 21. Thereby, it is possible to confirm whether the electrode plug 27 and the fixed plug 29 are in a fixed state or a released state, and it is easy to apply a force during work.

In detail, when fixing to the duct rail 2 and when removing from the duct rail 2, the rotation direction (operation direction) at the time of operation of the operation lever 73b and the operation lever 81d is reverse. For example, when removing from the duct rail 2, in the case of FIG. 3, the rotation direction of the operation lever 73b is counterclockwise, whereas the rotation direction of the operation lever 81d is clockwise. On the other hand, when fixing to the duct rail 2, the rotation direction of the operation lever 73b is clockwise while the rotation direction of the operation lever 81d is counterclockwise.
The operation levers 73b and 81d are provided with positioning protrusions 57, 58 and 70 and a restricting portion 71 so that the operation levers 73b and 81d do not further rotate when the fixed plug 29 and the electrode plug 27 are attached to or removed from the duct rail 2. Is provided. Thereby, attachment and removal of the duct rail 2 of the circuit box 3 can be easily performed.

(2-4) Positional relationship between electrode plug and fixed plug The description will be made mainly with reference to FIG.
A distance L1 in the longitudinal direction between the short side wall 33a located outside the electrode plug 27 in the longitudinal direction and the central axis X4 of the electrode plug 27, and a short side wall 33b located outside the longitudinal direction relative to the fixed plug 29 The distance L2 in the longitudinal direction with respect to the central axis X5 of the fixed plug 29 is substantially the same. Thereby, the circuit box 3 can be attached to the duct rail 2 in a stable state.
In a state where the lighting device 1 is attached to the duct rail 2 installed horizontally (ceiling surface), the downward load acting on the electrode plug 27 and the downward load acting on the fixed plug 29 are substantially equal. Yes. Thereby, it can prevent that an excessive load acts on one plug, and can install the illuminating device 1 in the duct rail 2 over a long period of time.

(3) Connection unit A description will be given mainly with reference to FIGS.
The connection unit 91 includes a base plate 93 disposed inside the case 21 and a pair of connection electrodes 95 and 95 provided on the base plate 93.
The base plate 93 is disposed below (front side) the electrode plug-side cover body 25a, and has a through hole 93a corresponding to the screw body 87 of the electrode plug 27 at the center thereof. The base plate 93 has a rectangular shape when viewed from the electrode plug-side cover 25a, and includes side walls 93b, 93c, and 93d that are erected on the back side along the short side wall 33a and the long side walls 33c and 33d of the case 21. ing. The base plate 93 is supported from the front side by a rib 43a (see FIG. 6) inside the case 21, and the end surfaces of the side walls 93b, 93c, 93d abut against the electrode plug side lid 25a. Thereby, the connection unit 91 is accommodated in the case 21 and fixed.

The connection electrode 95 is made of a metal rectangular thin plate. The pair of connection electrodes 95, 95 are attached to the base plate 93 in a state of standing with respect to the base plate 93. The pair of connection electrodes 95, 95 are arranged so as to sandwich the pedestal portion 82d of the electrode plug 27 when viewed from the electrode plug 27 side.
Thereby, when the electrode plug 27 is engaged with the fixing groove 11 of the duct rail 2, the virtual line connecting the pair of connection terminals 83 b and the pair of connection electrodes 95 are orthogonal to each other, and the connection terminals 83 b of the electrode plate 83 are connected. And the connection electrode 95 are in contact with each other. On the other hand, when the electrode plug 27 is removed from the duct rail 2, the imaginary line connecting the pair of connection terminals 83b and the pair of connection electrodes 95 are in parallel, and the connection terminal 83b of the electrode plate 83 and the connection electrode 95 are connected to each other. It stops touching.

The connection electrode 95 has a vertical portion 95 a standing on the base plate 93 and a horizontal portion 95 b extending along the base plate 93. The vertical portion 95 a is arranged along the longitudinal direction of the case 21, and is bent outward in the lateral direction of the case 21 at the central end portion 95 aa in the longitudinal direction of the case 21. The horizontal portion 95b is connected to the front side end of the bent portion (center side end portion 95aa) and spreads flatly on the center side in the longitudinal direction of the case 21.
A screw hole 95c is provided in the horizontal portion 95b, and a screw body 98 that passes through a through hole of the crimp terminal 99 provided at an end of the input cable 97 connected to the lighting circuit 101 is a screw hole 95c in the horizontal portion 95b. Threaded onto.
Since the connection electrode of the conventional product has a long flat plate shape and is not bent, and the direction of the wiring is different from that of the present embodiment, the connection electrode 95 of the present embodiment greatly occupies a larger area than the conventional product. Can be reduced.

(4) Lighting circuit This will be described mainly with reference to FIGS.
The lighting circuit 101 includes an AC circuit 103 and a DC circuit 105. The lighting circuit 101 is disposed in the case 21 so as to overlap the electrode plug 27 and the fixed plug 29 when viewed from the duct rail 2 side. Thereby, the input cable 97 (refer FIG. 11) which connects the electrode plug 27 side and the lighting circuit 101 can be shortened. In addition, the space on the front side of the electrode plug 27 and the fixed plug 29 in the case 21 can be used effectively, and the circuit box 3 can be downsized.

(4-1) AC Circuit The AC circuit 103 includes a plurality of AC circuit components 107 and an AC circuit board 109. When the circuit box 3 is viewed from the duct rail 2 side, the electrode plug 27 and the AC circuit board 109 overlap. In other words, the AC circuit board 109 is arranged on the front side of the connection unit 91 and at a position close to the front wall 31 of the case 21 (see FIG. 4).
In the AC circuit component 107, a tall circuit component (for example, a capacitor, an inductor, a relatively large IC, etc.) is mounted on the surface side of the AC circuit board 109 facing the electrode plug side cover 25a, while the short circuit component is short. Circuit components (for example, diodes, relatively small ICs, resistors, etc.) are mounted on the surface opposite to the surface facing the electrode plug side lid 25a.
Thereby, the electrode plug 27, the connection unit 91, and the AC circuit board 109 are hierarchically arranged in the front and back directions, and the length of the input cable 97 that connects the connection unit 91 and the AC circuit board 109 can be shortened.
Regardless of whether the AC circuit component 107 is short or tall, it is possible to determine which surface of the AC circuit board 109 is mounted in terms of circuit design, and at least a portion that overlaps a DC circuit board 113 described later is provided. By arranging the AC circuit component 107 having a short height, a compact power supply arrangement can be realized.
An insulating sheet 104 is disposed between the AC circuit 103 and the front wall 31 of the case 21 (see FIG. 5). The insulating sheet 104 is interposed between the AC circuit 103 and the nut body 42a, which is the coupling body 42, and can ensure insulation from the nut body 42a.

(4-2) DC Circuit The DC circuit 105 includes a plurality of DC circuit components 111 and a DC circuit board 113. When the circuit box 3 is viewed from the duct rail 2 side, the fixed plug 29 and the DC circuit board 113 overlap each other. In other words, the DC circuit board 113 is arranged in the DC circuit accommodating portion 59 of the fixed plug side lid 25b. The DC circuit board 113 is disposed in the DC circuit housing part 59 on the side close to the plate-like part 51. The DC circuit component 111 has a tall component (for example, a capacitor, an inductor, a relatively large IC, etc.) on the surface of the DC circuit board 113 opposite to the fixed plug side cover 25b (surface on the front wall 31 side of the case 21). On the other hand, the short components (for example, diodes, relatively small ICs, resistors, etc.) are mounted on the surface opposite to the fixed plug side cover 25b.
Regardless of whether the DC circuit component 111 is short or tall, it is possible to determine which surface of the DC circuit board 113 is mounted in terms of circuit design, and at least a portion overlapping the above-described AC circuit board 109 is determined. A compact power supply arrangement can be realized by arranging the short DC circuit component 111.

(4-3) Positional relationship between AC circuit and DC circuit The description will be made mainly with reference to FIG.
The AC circuit board 109 and the DC circuit board 113 are arranged in the longitudinal direction of the case 21. Here, the distance D1 between the mounting surface of the AC circuit board 109 and the surface of the component facing the mounting surface (here, the base plate 93 of the connection unit 91) is the mounting surface of the DC circuit board 113 and the mounting. The distance D2 is smaller than the distance D2 from the back surface of the part facing the surface (here, the front wall 31 of the case 21).
Since the AC circuit component 107 is generally shorter than the DC circuit component 111, the arrangement of the AC circuit component 107 and the DC circuit component 111 is suitable for such a configuration. Design becomes possible.
The positions of the AC circuit board 109 of the AC circuit 103 and the DC circuit board 113 of the DC circuit 105 are different in the depth direction (front and back direction) of the case 21. Therefore, when the AC circuit board 109 and the DC circuit board 113 are viewed from the lid 25 side, the AC circuit board 109 and the DC circuit board are in a state in which a part of the AC circuit board 109 and the DC circuit board 113 overlap in the longitudinal direction. 113 can be arranged. In addition, the AC circuit board 109 and the DC circuit board 113 are mounted with the AC circuit component 107 and the DC circuit component 111 on surfaces facing each other in a direction orthogonal to the AC circuit board 109 (front and back direction). Thereby, the spatial storage efficiency in the case 21 can be improved, and the case 21 can be reduced in size and thickness.

  When the AC circuit board 109 and the DC circuit board 113 are viewed from the lid 25 side, connectors 107a and 111a, which are examples of short components, are mounted facing each other on the overlapping portion of both circuit boards ( (See FIG. 12). The connectors 107a and 111a are for connection cables (not shown) for connecting the AC circuit board 109 and the DC circuit board 113. In addition, although the short parts are arranged here, for example, it is also possible to arrange the fixing part (a boss part or a screw hole) for fixing the circuit board to the case 21 or the like in an overlapping manner. The spatial storage efficiency can be further improved.

(4-4) Wiring Electrical connection will be described with reference to FIGS.
A connection unit 91 electrically connected to the electrode plug 27 and the AC circuit 103 are connected by an input cable 97. The AC circuit 103 side of the input cable 97 is connected to the AC circuit board 109 by solder or the like, and the connection unit 91 side of the input cable 97 is connected using a crimp terminal 99.
AC circuit 103 and DC circuit 105 are connected to each other via connectors 107a and 111a by a connection cable (not shown). The DC circuit 105 and the lamp body 4 are connected by an output cable (not shown). The connector at one end of the output cable is connected to the connector 111b of the DC circuit board 113, and the connector at the other end of the output cable is connected to the connector 182 (see FIG. 18) of the LED unit 171.
By connecting in this order, the wiring can be shortened and generated noise radio waves can be reduced.

3. The arm will be described with reference to FIGS. 1 to 4 and FIGS. 13 to 15.
The arm 5 mechanically connects the lamp body 4 and the case 21. The arm 5 has a U-shaped (U-shaped or V-shaped) as a whole, an arm main body 121, a case-side coupling body 123 for coupling to the case 21, and the lamp body 4. And a pair of lamp body side coupling bodies 125 for coupling with the lamp body side.
The arm 5 rotates the first axis extending in the mounting direction (front and back direction) to the duct rail 2 and the second axis extending in the direction orthogonal to the mounting direction (front and back direction) to rotate the lamp body 4. The case 21 (circuit box 3) is rotatably connected. Thereby, the direction of the light emitted from the lamp body 4 can be adjusted.

(1) Connection body As an example of the case side connection body 123, a screw body having a through hole along the central axis (screw axis) is used, and as an example of the lamp body side connection body 125, along the central axis (screw axis). A screw body having a through hole is used.

(2) Arm body Description will be given mainly with reference to FIGS.
The arm main body 121 includes a case-side coupling body accommodating portion 127 that accommodates part or all of the case-side coupling body 123, and a lamp body-side coupling body accommodating portion 129 that accommodates part or all of the lamp-side coupling bodies 125, 125. 131, and a pair of connection portions 133 and 135 that connect the case side coupling body housing portion 127 and the pair of lamp body side coupling body housing portions 129 and 131.
When the arm 5 is viewed from the circuit box 3 side, the pair of connection portions 133 and 135 extend from the case-side connector housing portion 127 in opposite directions. That is, the pair of connection parts 133 and 135 and the case side connector housing part 127 are positioned on a straight line (see FIG. 3).

The inside of the arm body 121 is hollow. That is, the insides of the case side connector housing portion 127, the lamp body side connector housing portions 129 and 131, and the connection portions 133 and 135 are hollow, and the inside of the case side connector housing portion 127 and the pair of lamp body side connector housing portions. 129 and 131 communicate with the inside of the arm 5.
The case-side coupling body accommodating portion 127 is provided at the top of the U-shaped arm main body 121, and the lamp-side coupling body accommodating portions 129 and 131 are the end portions of the arm main body 121 (the most flowed portion from the circuit box 3). Is provided. Here, the top part of the arm main body 121 is a part where the distances from the pair of end parts are substantially equal.
The arm main body 121 is configured by combining a U-shaped outer cylinder member 137 and a U-shaped inner cylinder member 139, and has a hollow portion 141 between the outer cylinder member 137 and the inner cylinder member 139. Yes. An output cable (not shown) that electrically connects the lighting circuit 101 and the lamp body 4 is accommodated in the hollow portion 141.

  The arm main body 121 has a metallic reinforcing member 143 in the hollow portion 141. Further, the arm main body 121 has caps 145 and 145 that close the through holes 149c and 151c (see FIG. 15) of the lamp body side connecting body accommodating portions 129 and 131, respectively. That is, the arm main body 121 includes an outer cylinder member 137, an inner cylinder member 139, a reinforcing member 143, and a cap 145, and an output cable is accommodated inside the arm main body 121. Thereby, the output cable and the reinforcing member 143 are not exposed, and the appearance is improved.

(2-1) Outer cylinder member It demonstrates mainly using FIGS. 13-16.
The outer cylinder member 137 is a member located outside the arm body 121. The outer tube member 137 includes an outer tube case side connector housing portion 147 corresponding to the case side connector housing portion 127 and outer tube lamp body side connector housing portions 149 and 151 corresponding to the lamp body side connector housing portions 129 and 131. And outer tube connection parts 153 and 155 for connecting the outer tube case side connection body housing part 147 and the outer tube light body side connection body housing parts 149 and 151.
As an example, the cross-sectional shape of the arm body 121 has a quadrangular shape. For this reason, the outer cylinder member 137 has a U-shaped cross-sectional shape except for a part of the outer lamp body side connecting body accommodating portions 149 and 151.

The outer tube connecting portions 153 and 155 include parallel portions 153a and 155a extending from the outer tube case side connector housing portion 147 in directions opposite to each other in a plane parallel to the installation surface, and the outer tube light body side connector housing. And vertical portions 153b and 155b extending from the portions 149 and 151 in the front and back direction.
The outer cylinder case-side connector housing portion 147 is larger than the width of the parallel portions 153a, 155a on both sides (the dimension in the direction orthogonal to the direction in which the parallel portions 153a, 155a extend), and is circular when viewed from the case 21 side. It swells in an arc. The outer cylinder case side connecting body accommodating portion 147 has a through hole 147 a through which a screw portion of the case side connecting body 123 is inserted on the back surface (back wall) facing the case 21. The threaded portion of the case side connector 123 extends outward from the through hole 147a, and the head portion is accommodated in the case side connector accommodating portion 127. In addition, the outer tube lamp side connecting body accommodating portions 149 and 151 will be described later.

(2-2) Inner cylinder member It demonstrates mainly using FIGS. 13-15 and FIG.
The inner cylinder member 139 is a member located inside the arm main body 121. The inner tube member 139 includes an inner tube case side connector housing portion 157 corresponding to the case side connector housing portion 127 and inner tube lamp body side connector housing portions 159 and 161 corresponding to the lamp body side connector housing portions 129 and 131. And inner tube connection parts 163 and 165 for connecting the inner tube case side connection body housing part 157 and the inner tube lamp body side connection body housing parts 159 and 161.
The inner tube member 139 is fitted inside the corresponding portion of the outer tube member 137 except for the inner tube lamp side connector housing portions 159 and 161. An inner cylinder member 139 located inside the U-shaped arm main body 121 is fitted into the outer cylinder member 137. Thereby, the joint of both members is located on the inner side and is difficult to see, and the appearance of the arm main body 121 is improved.
The inner tube connecting portions 163 and 165 include parallel portions 163a and 165a extending from the inner tube case side connector housing portion 157 in directions opposite to each other in a plane parallel to the installation surface, and the inner tube lamp body side connector housing. Vertical portions 163b and 165b extending from the portions 159 and 161 in the front and back direction.

The inner cylinder member 139 is a portion close to the inner tube lamp-side connector housing portion 159, 161 side in the inner tube case-side connector housing portion 157, the inner tube lamp body-side connector housing portion 159, 161 and the vertical portions 163b, 165b. Except for having a U-shaped cross-sectional shape. In other words, the inner cylinder member 139 has a lid portion that closes the opening of the outer cylinder member 137 having a U-shaped cross section, and an upright standing from the edge of the lid portion in the short direction to the outer cylinder member 137. And a wall.
The inner cylinder case side connector housing part 157 is larger than the width of the parallel parts 163a and 165a on both sides (the dimension in the direction orthogonal to the direction in which the parallel parts 163a and 165a extend), and is circular when viewed from the case 21 side. It swells in an arc.
The inner cylinder case side connector housing portion 157 includes a support piece 157 a that supports the head of the case side connector (screw body) 123 accommodated in the case side connector housing portion 127. There is a pair of support pieces 157a, and they are provided upright in the front and back direction.

(2-3) Lamp body side connecting body accommodation part It demonstrates mainly using FIG.16 and FIG.17.
The lamp body side connecting body accommodating portions 129 and 131 have a hollow column shape (see FIG. 14). The columnar shape has a columnar shape having a central axis in a direction connecting the end portions of the arm main body 121, and has a columnar shape as an example.
The lamp body side connecting body accommodating portions 129 and 131 are configured by combining outer tube lamp side connecting body accommodating portions 149 and 151 and inner tube lamp side connecting body accommodating portions 159 and 161. The lamp body side connecting body accommodating portions 129 and 131 are substantially divided into two in the front and back direction. In other words, the lamp body side connecting body accommodating portions 129 and 131 are divided into two parts, the circuit box 3 side and the lamp body 4 side. The boundary surface that bisects is a surface that is parallel to the installation surface and that passes through the central axis of the lamp body side connector housing portions 129 and 131.

Of the divided lamp body side connector housing parts 129 and 131, the side close to the duct rail 2 is the outer tube lamp body side connector housing parts 149 and 151, and the side far from the duct rail 2 is the inner tube lamp body side connector housing part. 159, 161.
As shown in FIG. 16, the outer lamp body side connecting body accommodating portions 149 and 151 are semi-cylindrical portions 149 a and 151 a continuous to the vertical portions 153 b and 155 b, and outside the semi-cylindrical portions 149 a and 151 a (far from the lamp body 4). And outer end wall portions 149b and 151b. The outer end wall portions 149b and 151b are formed on the opposite sides of the semicircular regions 149ba and 151ba and the semicircular regions 149ba and 151ba on the opposite side of the vertical portions 153b and 155b. Extension regions 149bb and 151bb extending.
Through holes 149c and 151c are provided in the outer end wall portions 149b and 151b of the outer lamp body side connecting body accommodating portions 149 and 151, respectively. The through holes 149 c and 151 c are for operating the lamp body side coupling body 125 when the arm 5 is coupled to the lamp body 4. The through holes 149c and 151c are closed by caps 145 and 145.

As shown in FIG. 17, the inner lamp body side connecting body accommodating portions 159 and 161 include circular inner end wall portions 159 a and 161 a continuous to the vertical portions 163 b and 165 b, and vertical portions in the inner end wall portions 159 a and 161 a. Semi-cylindrical portions 159b and 161b provided in the semicircular portion far from 163b and 165b, and outer end wall portions 159c and 161c arranged outside the semi-cylindrical portions 159b and 161b (side far from the lamp body 4); Have
The outer end wall portions 159c and 161c close part of the outer openings of the semi-cylindrical portions 159b and 161b, and the insertion grooves 159ca into which the extension regions 149bb and 151bb of the outer lamp body side connector housing portions 149 and 151 are inserted. , 161ca (161ca is hidden).
Through-holes 159e and 161e are provided in the inner end wall portions 159a and 161a of the inner tube lamp side connecting body accommodating portions 159 and 161, respectively. The threaded portion of the lamp body side coupling body 125 extends from the through holes 159e and 161e, and the head portion is accommodated in the lamp body side coupling body housing portions 129 and 131.

(2-4) Reinforcing member The description will be made mainly with reference to FIGS. 14 and 15.
The reinforcing member 143 has a U shape. A portion of the reinforcing member 143 corresponding to the case-side connector housing portion 127 of the arm body 121 is a bulging portion 167 that bulges toward the circuit box 3 side. The bulging portion 167 is provided with a through hole 167 a for the case side connector 123. The bulging portion 167 has a protrusion 167 b on the back surface that protrudes on the opposite side of the circuit box 3. The protrusion 167b is for restricting the rotation of the case side connector 123.
The end portions of the reinforcing member 143 (located in a part away from the case 21) are wide portions 169 and 170 that are wider than the intermediate portion other than the end portion. The wide portions 169 and 170 are provided with through holes 169a and 170a for the lamp body side coupling body 125.
In the disassembled reinforcing member 143, the distance between the end portions (wide portions 169, 170) is smaller than the distance between the outer surfaces of the lamp bearing 190 (see FIG. 23) that contacts the pair of connecting portions 189 of the heat sink 173. And has a biasing force (restoring force) in a direction to sandwich the heat sink 173.

(2-5) Cap Description will be made mainly with reference to FIGS.
The cap 145 has a bottomed cylindrical shape. The cap 145 is a locking claw 173b that is locked to the locking recesses 149d and 151d of the outer lamp body side connecting body accommodating portions 149 and 151 and the locking recesses 159f and 161f of the inner tube lamp side connecting body receiving portions 159 and 161. , 173b.

(3) Connection with Circuit Box Description will be made mainly with reference to FIGS.
The connection between the arm 5 and the circuit box 3 is achieved by connecting the threaded portion of the case-side connector 123 extending from the inside of the arm 5 through the through hole 41b of the protrusion 41 of the circuit box 3. 42 (nut body 42a) is screwed together.

4). Lamp 4
This will be described mainly with reference to FIGS.
The lamp body 4 has an LED unit 171 and a heat sink 173 in a cylindrical body 175. The lamp body 4 of the embodiment includes a lens body 177 and a lens cover 179 in addition to the LED unit 171, the heat sink 173, and the cylindrical body 175.
In the lamp body 4, the side from which the light from the LED unit 171 is emitted is the front side (or the front side of the lamp body 4), and the side that is not emitted is the rear side (the back side of the lamp body 4).

(1) LED unit The LED unit 171 includes a plurality of LEDs 181 and a mounting substrate 183 on which the plurality of LEDs 181 are mounted. The mounting substrate 183 has a circular shape when viewed from a direction orthogonal to the mounting substrate 183. The center of the mounting substrate 183 is located on the central axis of the cylindrical body 175. The main surface of the mounting substrate 183 is orthogonal to the central axis of the cylindrical body 175.
The plurality of LEDs 181 are arranged in a multiple ring shape with the center of the circular mounting substrate 183 as the center. Here, they are arranged on a plurality of concentric circles having different radii. The mounting board 183 has a connector 182 for connecting to the output cable 193. The LED unit 171 is mounted on the heat sink 173 via heat conduction grease or the like or without heat conduction grease.

(2) Heat Sink This will be described mainly with reference to FIGS.
The heat sink 173 has a function of releasing heat generated during light emission of the LED unit 171. The heat sink 173 includes a base portion 185 for mounting the LED unit 171 on the front surface, a heat radiating portion 187 provided on the rear side of the base portion 185, and a connecting portion 189 connected to the arm 5 via the lamp body bearing 190. . The base portion 185 is made of a metal material having excellent heat dissipation characteristics. The base portion 185 is made of aluminum having a high lightening effect. The base part 185, the heat radiating part 187, and the connecting part 189 are integrally formed of the same material.

(2-1) Base part It demonstrates mainly using FIGS. 18-20.
The base portion 185 has a shape close to a disk corresponding to the inner peripheral surface of the cylindrical body 175 and the shape of the mounting substrate 183. The base portion 185 has a chipped portion 191 at the outer peripheral portion. The chipped portion 191 is formed from the outer periphery toward the center, and an output cable 193 that supplies power to the LED 181 passes therethrough. The part which is an outer peripheral surface of the base part 185, and opposes on both sides of the center is parallel. A connecting portion 189 is provided on the rear side of the parallel portions 185a and 185b. A through hole 195 through which a screw body 197 for fixing the lens body 177 and the lens cover 179 to the main cover 217 is inserted is provided on the front surface of the base portion 185.

(2-2) Heat Dissipation Part Description will be made mainly with reference to FIGS. 19 and 20.
The heat dissipating part 187 has a plurality of fins 201 extending from the base part 185 to the rear side. The plurality of fins 201 are arranged in any one of the plurality of fan-shaped regions centered on the center of the mounting substrate 183 when the heat dissipating part 187 is viewed from the rear side. One example of the plurality of fan-shaped regions is the first fan-shaped region 202 and the second fan-shaped region 204. The first fan-shaped region 202 and the second fan-shaped region 204 are in symmetrical positions with the virtual center line O in between. The virtual center line O is a virtual line that is orthogonal to the mounting substrate 183 and passes through the center of the mounting substrate 183. A fin is not provided between the first fan-shaped region 202 and the second fan-shaped region 204, and a connecting portion 189 is provided in a region where the fin does not exist.

The first fan-shaped region 202 is divided into a plurality of regions in the radial direction. As an example, the first fan-shaped region 202 is positioned outside the first inner region 202a, the first middle region 202b located outside the first inner region 202a, and the first middle region 202b. The first outer region 202c is composed of three regions.
In other words, the plurality of fins 201 arranged in the first fan-shaped region 202 are located on the first inner fin group located on the circumference of the first radius and on the circumference of the second radius larger than the first radius. It belongs to one of the first middle fin group and the first outer fin group located on the circumference of the third radius larger than the second radius.
The first inner fin group is a group of fins 201 arranged in the first inner region 202a. The first middle fin group is a group of fins 201 arranged in the first middle region 202b. The first outer fin group is a group of fins 201 arranged in the first outer region 202c.

The second fan-shaped region 204 is divided into a plurality of regions in the radial direction. As an example, the second fan-shaped region 204 is positioned outside the first inner region 204a, the first middle region 204b located outside the first inner region 204a, and the first middle region 204b. The first outer region 204c is composed of three regions.
In other words, the plurality of fins 201 arranged in the second fan-shaped region 204 are located on the circumference of the second inner fin group located on the circumference of the first radius and the second radius larger than the first radius. It belongs to either the second middle fin group or the second outer fin group located on the circumference of the third radius larger than the second radius.
The second inner fin group is a group of fins 201 arranged in the second inner region 204a. The second middle fin group is a group of fins 201 arranged in the second middle region 204b. The second outer fin group is a group of fins 201 arranged in the second outer region 204c.

The plurality of fins 201 extend in the radial direction in polar coordinates centered on the virtual center line O and are spaced apart in the circumferential direction when the heat radiating portion 187 is viewed from the rear side. That is, the fin 201 has an elongated cross-sectional shape and extends backward from the base portion 185 in a plate shape. The longitudinal direction of the fin 201 is a direction (front-rear direction) orthogonal to the base portion 185, the longitudinal direction in the transverse section coincides with the radial direction in polar coordinates, and the transverse direction in the transverse section (the thickness direction of the fin 201). .) Matches the circumferential direction in polar coordinates.
Each of the plurality of fins 201 has a circular columnar part 201a that is circular when viewed from the rear side, and a rectangular column part 201b that extends from the cylindrical part 201a toward the virtual center line O of the heat radiating part 187. ing. A plurality of grooves 201c extending in the front-rear direction of the fins 201 are provided on a plane parallel to the radial direction when the rectangular columnar part 201b is viewed from the rear side. Thereby, the surface area of the fin 201 can be increased, and the heat dissipation characteristics can be improved.
Further, as described above, the plurality of fins 201 are divided into two fan-shaped regions 202 and 204, which are further divided into three inner regions 202a and 204a, middle regions 202b and 204b, and outer regions 202c and 204c. Has been placed. Thereby, the air that flows in from the cylinder side hole 225 and the side hole 231 of the cylindrical body 175 flows around the fin 201 without being specified as the inflow path, and without being specified as the outflow path, It can flow out from the bottom hole 231. For this reason, the heat dissipation characteristic of the fin 201 is improved.

The pitch in the circumferential direction of the plurality of fins 201 decreases as the distance from the virtual center line O increases in the radial direction. The radial length of the fin 201 arranged in the outer regions 202c and 204c farthest from the virtual center line O is larger than the radial length of the fin 201 arranged in the inner regions 202a and 204a closest to the virtual center line O. Also long. The lengths of the plurality of fins 201 (extension length from the base portion 185) are substantially constant regardless of the region where they are arranged.
The ends close to the virtual center line O of the plurality of fins 201 arranged in the inner regions 202a and 204a are connected to each other by the connection unit 205. The connection portion 205 has an arc shape when viewed from the rear side.

(2-3) Connecting part The connecting part 189 mechanically connects the heat sink 173 to the outside. The connecting portion 189 exists on the rear side of the base portion 185 and in a region where the plurality of fins 201 of the heat radiating portion 187 are not arranged. This region is between the first outer region 202c and the second outer region 204c in the circumferential direction. There are two connecting portions 189, and when the heat sink 173 is viewed from the rear side, the connecting portion 189 is located on the outer peripheral side of the heat sink 173 and on a straight line passing through the virtual center line O.
The two connecting portions 189 have a screw hole 207 extending in a plate shape from the rear side of the base portion 185 and having a straight line passing through the virtual center line O when viewed from the rear side as a central axis. Note that the extending length of the connecting portion 189 from the base portion 185 is shorter than the extending length of the fin 201, and the connecting portion 189 is thicker than the fin 201. The connection with the lamp body 4 (the connecting portion 189) is performed through the lamp body bearing 190.

(3) Lens body and lens cover (light control unit)
The light control unit 178 includes a lens body 177 and a lens cover 179.
The lens body 177 is disposed in front of the LED 181 in the light emitting direction. A lens body 177 is provided for each LED 181. Here, an individual lens 209 corresponding to each LED 181 is integrated.
The lens body 177 has a disk shape corresponding to the shape of the mounting substrate 183. The lens body 177 is made of a translucent resin. For example, polycarbonate, acrylic or the like can be used as the translucent resin.

The lens body 177 integrally includes a plurality of lenses 209 and a connecting portion 210. The lens body 177 here has a cylindrical portion 211 on the outer peripheral edge of the connecting portion 210.
The connecting unit 210 connects the plurality of lenses 209 so that the light emission surfaces of the plurality of lenses 209 are on the same plane. A plurality of lenses 209 are provided corresponding to the LEDs 181. Here, as shown in FIG. 18, the plurality of LEDs 181 are arranged on a concentric multiple (double) circle and the center thereof, and the lens 209 is provided in a multiple (double) circle. The connecting portion 210 has a plate shape with a substantially constant thickness at a portion where the lens 209 is not present.
The lens 209 has a rotating body shape with the extension line of the optical axis (which is the main light emitting direction) of the corresponding LED 181 as the rotation center axis. The lens 209 here has a frustoconical shape. The wharf side (small diameter side) of the lens 209 is the LED 181 side. The peripheral surface of the end on the large diameter side of the lens 209 is connected by a connecting portion 210.
As shown in FIG. 21, the lens 209 has a recessed portion 209a on the end face on the small diameter side, and a part of the LED 181 is inserted (arranged) into the recessed portion 209a. At this time, when the lens 209 and the LED 181 are viewed from the extending direction of the central axis of the lamp body 4, the rotation central axis of the lens 209 and the optical axis of the LED 181 coincide.

The lens body 177 is attached so as to come into contact with the base portion 185 of the heat sink 173 so as to cover the LED unit 171. For this reason, the cylinder part 211 is higher than the lens 209 when the surface on the LED 181 side in the connecting part 210 is used as a reference.
The lens body 177 is attached to the main cover 217 using a screw body 197. An attached portion 212 for this purpose is provided in the cylindrical portion 211. The cylindrical portion 211 has a thick portion 211a that protrudes toward the center axis side at an interval in the circumferential direction and becomes thicker, and a mounted portion 212 is provided on the thick portion 211a. The thick portion 211a (attached portion 212) is provided at a plurality of locations (here, three locations) at equal intervals in the circumferential direction of the cylindrical portion 211.
The mounted portion 212 is formed by a notch hole 212b provided in a state of being exposed on the outer peripheral surface of the thick portion 211a and provided at the bottom of the recessed portion 212a that is recessed from the front side to the middle in the center axis direction. Has been.
A convex portion 211b is provided on the back surface of the thick portion 211a. The convex portion 211b fits into the through hole or notch 183a of the mounting substrate 183 of the LED unit 171. By this fitting, the plurality of lenses 209 of the lens body 177 are individually aligned and arranged so as to correspond to the individual LEDs 181 on the mounting substrate 183.

The lens cover 179 is for protecting the lens body 177 and has a plate shape as a whole. The lens cover 179 is made of a translucent resin. For example, polycarbonate, acrylic or the like can be used as the translucent resin.
The lens cover 179 has a plate-like portion 213 and an attached portion 214 integrally. The lens cover 179 is attached to the base portion 185 of the heat sink 173 together with the lens body 177 with the plate-like portion 213 contacting the lens body 177 (more precisely, the screw body 197 is screwed into the screw hole 233 of the main cover 217. To install).
The facing portion 213a facing the lens 209 on the back surface of the plate-like portion 213 is transparent (there is no unevenness for the purpose of diffusion). Here, since the lens 209 is circular when viewed from the front side, the facing portion 213a is also circular.

A non-opposing part excluding the opposing part 213a on the back surface of the plate-like part 213 serves as a diffusion part 213b. Here, the diffusion portion 213b is provided in all regions of the non-opposing portion. The diffusing portion 213b is configured by unevenness for diffusing light. The unevenness can be carried out, for example, by subjecting the mold to unevenness processing (for example, embossing). The surface of the plate-like portion 213 may be subjected to the same diffusion treatment (unevenness processing) as the diffusion portion 213b.
The lens cover 179 has an attached portion 214 at a portion on the outer peripheral side of the plate-like portion 213 and spaced in the circumferential direction, and is located on the base portion 185 side (main cover 217) via the attached portion 214. It is attached. The mounted portion 214 includes a protruding portion 214a protruding in a semi-bottomed cylindrical shape from the back surface of the plate-shaped portion 213, and a notch hole 214b provided in the bottom wall of the protruding portion 214a. Here, the semi-bottom cylindrical shape means a shape obtained by cutting the bottomed cylindrical shape by a plane including a virtual line segment parallel to the central axis of the cylinder.
In the lens body 177 and the lens cover 179, a screw body 197 that passes through the notch hole 214 b of the protrusion 214 a of the lens cover 179 and the notch hole 212 b of the recess 212 a of the lens body 177 passes through the through hole 195 of the base part 185. Then, it is attached to the main cover 217 by being screwed into the screw hole 233 of the main cover 217.

(4) Cylindrical body It demonstrates using FIG.18 and FIG.22.
The cylindrical body 175 has a main cover 217 that mainly covers the heat sink 173 and a sub cover 219 that covers the front side of the heat sink 173.

(4-1) Main Cover The main cover 217 is a bottomed cylindrical resin protective case having a cylindrical portion 221 and a bottom portion 223. The heat sink 173 is inserted into the main cover 217 from the heat radiating portion 187 side. In the inserted state, the LED mounting surface of the LED unit 171 mounted on the base portion 185 and the opening surface 217a of the main cover 217 substantially coincide (see FIG. 4).
The cylindrical portion 221 has a plurality of tube side holes 225 extending in a direction parallel to the central axis of the cylindrical portion 221 and a through hole 229 provided in a connection portion 227 with the arm 5 on the opening side.
When the main cover 217 is viewed from the side, the cylinder side hole 225 has an elongated rectangular shape. The plurality of tube side holes 225 are provided at equal intervals along the circumferential direction of the cylindrical portion 221 except for the connecting portion 227. Note that there are two connecting portions 227 on an imaginary line orthogonal to the central axis of the cylindrical portion 221.
The bottom 223 has a plurality of bottom holes 231 extending in the radial direction of polar coordinates centered on the center of the bottom 223. When the main cover 217 is viewed from the rear side, the bottom hole 231 has an elongated rectangular shape. The plurality of bottom holes 231 are provided radially at equal angles in the circumferential direction.

The cylinder side hole 225 and the bottom side hole 231 function as an outlet and an inlet for flowing out air heated by the heat radiating portion 187 of the heat sink 173. The cylinder side hole 225 is provided along the extending direction (longitudinal direction) of the plurality of plate-like fins 201 of the heat sink 173, and the bottom side hole 231 is provided along the radial direction of the plurality of fins 201. As a result, air can easily flow between the plurality of fins 201.
The total area of the bottom side holes 231 is larger than the total area of the cylinder side holes 225. Thereby, the cooling air can be efficiently flowed into the main cover 217. In addition, the opening width of the bottom side hole 231 and the cylinder side hole 225 (a rectangular dimension in the short direction) is set to 5 [mm] or less. Thereby, it can restrict | limit that an operator's finger enters the cylinder side hole 225 and the bottom side hole 231, and can improve the safety | security at the time of work.
The main cover 217 has a plurality of boss portions 235 having screw holes 233 into which a screw body 197 inserted through the lens cover 179, the lens body 177, the mounting substrate 183, and the base portion 185 of the heat sink 173 is screwed.

(4-2) Sub-cover This will be described with reference to FIG.
The sub cover 219 has a cylindrical shape made of resin. The sub-cover 219 is white-coated on the inner surface 219a to prevent glare. Compared to conventional metallic ones, the weight is reduced and the cost is reduced. Since the sub cover 219 is preferably opaque, it is preferable that the thickness is 3 mm or more, or the thickness is 2 mm or less and the pigment is mixed in the resin so as not to transmit light.
(5) Lamp body bearing A description will be given with reference to FIG.
The lamp body bearing 190 is for filling a gap between the connecting portion 189 and the arm 5, and is interposed between the connecting portion 189 and the reinforcing member 143 of the arm 5 inside the main cover 217. The lamp bearing 190 uses a so-called brim bush. The surface of the collar portion opposite to the reinforcing member 143 contacts the connecting portion 189. The threaded portion of the lamp body side connecting body 125 is inserted through the lamp body bearing 190.

(6) Connection with Arm This will be described with reference to FIGS. 15, 18 and 23. FIG.
The lamp body 4 is connected to the arm 5 so as to be rotatable about a phantom line connecting the ends of the U-shaped arms 5.
As for the connection between the arm 5 and the lamp body 4, the threaded portion of the lamp body side connecting body 125 arranged inside the arm 5 connects the through holes 159 e and 161 e of the arm body 121, the through hole 229 of the main cover 217, and the lamp body bearing 190. This is done by inserting and screwing into the screw hole 207 of the connecting portion 189 of the heat sink 173.

  A spring washer 126a, a metal washer 126b, and a resin washer 126c are arranged from the head side between the head of the lamp body side coupling body 125 and the reinforcing member 143 of the arm 5. Here, the resin washer 126c that is in contact with the reinforcing member 143 is made of a resin material having a friction coefficient smaller than that of metal and having a high heat resistance temperature. Examples of such a material include POM (polyoxymethylene), Bakelite (registered trademark), epoxy glass, fluororesin, and MC nylon (registered trademark). POM includes homopolymers and copolymers (for example, Duracon resin). Thereby, even if the posture of the lamp body 4 is adjusted in a state where the lamp body side coupling body 125 is tightened, it is possible to prevent the reinforcing member 143 and the resin washer 126c from being damaged.

A resin washer 126 d is disposed between the lamp body 4 (main cover 217) and the inner cylinder member 139 of the arm 5. The resin washer 126d is made of a resin material having a friction coefficient smaller than that of metal and having a high heat resistant temperature. Examples of such a material include POM (polyoxymethylene), Bakelite (registered trademark), epoxy glass, fluororesin, and MC nylon (registered trademark). POM includes homopolymers and copolymers (for example, Duracon resin). Thereby, even if the posture of the lamp body 4 is adjusted in a state where the lamp body side coupling body 125 is tightened, it is possible to prevent the lamp body 4 and the arm 5 from being damaged.
Note that the lamp-side connecting body 125 is screwed with a screwdriver using the through-holes 149c and 151c of the outer tube lamp-side connecting body accommodating portion 149 of the outer cylinder member 137 of the arm 5. After the connection is completed, the through holes 149 c and 151 c of the outer cylinder member 137 are closed by the cap 145. Thereby, the lamp body side connecting body 125 is not exposed, and the design of the connecting portion can be improved.

5. Electrical connection between circuit box and lamp body A description will be given with reference to FIG.
An output cable 193 (only one end shown in FIG. 18) connected to the DC circuit 105 of the circuit box 3 passes through the inside of the case side coupling body 123 having a through hole at the center and is introduced into the arm 5. The The output cable 193 introduced into the inside of the arm 5 passes through the inside of the connection parts 133 and 135 provided on both sides of the case side coupling body accommodating section 127 and is inside the lamp body side coupling body 125 having a through hole at the center. To the inside of the main cover 217 through the through hole 229 of the main cover 217 of the lamp body 4.
At this time, since the output cable 193 having a pair of wires is divided and arranged in the two connection portions 133 and 135, the space inside the arm 5 can be reduced, and as a result, the arm 5 can be made thinner. .

6). Light Control Unit The light control unit 178 includes a lens body 177 and a lens cover 179. The lens body 177 has a complicated shape in order to reflect or refract light from the LED 181 in a desired direction, whereas the lens cover 179 has a simpler shape than the lens body 177.
For this reason, when preparing a plurality of illumination devices having different illuminance distribution, light color, or glare suppression degree (different optical processing) on the illumination target surface, for example, only a basic mold is prepared for the lens, and the lens The preparation of only a plurality of cover molds is cheaper than preparing a large number of lens molds having a complicated structure in accordance with the type of optical processing.
Although the lens cover 179 has the diffusing portion 213b, for example, the light color can be adjusted by mixing a pigment or phosphor particles into a resin material constituting the lens cover.

The diffusion part 213b in the lens cover 179 may be present on the orbit of the light emitted from the LED 181 and may be present on at least one of the light emitting surface and the light incident surface of the lens cover 179.
When the diffusing unit 213b is present on the entire surface of the lens cover 179, for example, when the lighting device 1 that is turned on is viewed from the irradiated surface side, the surrounding scene on the irradiated surface side is reflected on the lens cover 179. Can be suppressed.
On the back surface of the lens cover 179 (the side on which the lens body 177 is located), when the diffusing portion 213b is present on the entire surface except the facing portion 213a facing the lens 209, for example, the lighting device 1 is installed or the lighting device 1 is cleaned. In this case, even if the surface of the lens cover 179 is damaged, it is effective to prevent local luminance unevenness from occurring in the light emitted from the illumination device 1.

7). Lens shape and lens cover diffusing portion The lens 209 in the embodiment has a frustoconical shape, but the lens may have another shape as long as it has a rotating body shape. Hereinafter, the positional relationship between the lens and the diffusing portion of the lens cover will be described with reference to FIG. 24 by taking three types of lenses having different light distribution angles as an example. In FIG. 24, one lens is enlarged and described.
The light control units 1178, 2178, and 3178 described here include lens bodies 1177, 2177, and 3177 integrally including a plurality of lenses 1209, 2109, and 3109, and a lens cover that covers the light emitting surfaces of the lens bodies 1177, 2177, and 3177. 1179, 2179, 3179.
As shown in FIG. 24, the lenses 1209, 2209, and 3209 are, as a whole, enlarged diameter portions 1209A, 2209A, and 3209A whose diameter gradually increases as they move away from the LED 181 on the rotation center axis, and straight portions 1209B and 1209B that have a constant diameter. 2209B and 3209B along the rotation center axis.

The lens covers 1179, 2179, and 3179 are provided so as to come into contact with the light emitting surfaces of the lenses 1209, 2209, and 3209. Opposing portions 1213a, 2213a, and 3213a facing the light emitting surfaces of the lenses 1209, 2209, and 3209 in the lens covers 1179, 2179, and 3179 are transparent, and the facing portions 1213a, 2213a, and 3213a are subjected to optical processing. Absent. Note that normal refraction and reflection are performed when light is incident on the lens covers 1179, 2179, and 3179 and when light is emitted from the lens covers 1179, 2179, and 3179.
In the lens cover 1179,2179,3179, opposing portions 1213a, 2213A, some or all of the back surface of the peripheral portion of the 3213a spreading section 1213b, 2213B, and has a 3213B. Here, the diffusion portions 1213b, 2213b, and 3213b are constituted by irregularities.

  By providing the unevenness, it is possible to suppress the light emitted from the LED 181 from being emitted as it is from the lighting device, and it is possible to eliminate the local increase in luminance. Note that a diffusion portion may be provided on at least one of the front and back surfaces of the connecting portions 1210, 2210, and 3210 of the lens bodies 1177, 2177, and 3177 to further suppress local luminance unevenness. That is, the lens cover body may have a diffusion part as appropriate for the lighting application. Hereinafter, the description will focus on the characteristic parts of each light control unit.

(1) Orientation angle: 46 °
The light control unit 1178 shown in FIG. 24A is a type having an orientation angle of 46 [°], a lens body 1177 integrally including a plurality of lenses 1209, and a lens that covers the light emitting surface of the lens body 1177. And a cover 1179.
The lens body 1209 includes a plurality of lenses 1209 having an enlarged diameter portion 1209A and a straight portion 1209B, and a connecting portion 1210 for connecting the front side portions of the straight portions 1209B of the plurality of lenses 1209.

The outer peripheral surface of the enlarged diameter portion 1209A is a curve (three-dimensionally curved) that bulges outward in the radial direction (direction perpendicular to the rotation center axis) in the longitudinal section. The expanded diameter of the expanded diameter portion 1209A is small, and the outer peripheral surface of the expanded diameter portion 1209A is a total reflection surface that reflects the light emitted from the LED 181 toward the expanded diameter portion 1209.
The end surface of the enlarged diameter portion 1209A on the side where the LED 181 exists, that is, the end surface on the smaller diameter side of the enlarged diameter portion 1209A is a flat surface orthogonal to the rotation center axis. The shape of the outer peripheral surface and end surface of the enlarged diameter portion 1209A is appropriately designed in accordance with the light distribution characteristics required for the lens 1209.
An end surface (light emitting surface) opposite to the LED 181 in the straight portion 1209B is a flat surface orthogonal to the rotation center axis. The diameter D2 of the straight portion 1209B is in the range of 1.2 times to 1.8 times the diameter D1 on the side where the LED 181 of the enlarged diameter portion 1209A exists. The length L2 of the straight portion 1209B is in the range of 1.3 times to 1.9 times the length L1 of the enlarged diameter portion 1209A.

The facing portion 1213a of the lens cover 1179 has a circular shape. The diffusing portion 1213b exists outside the facing portion 1213a and around the periphery of the facing portion 1213a, and has an annular shape. The outer diameter D3 of the ring is in the range of 2 to 4 times the diameter of the facing portion 1213a (the same as the diameter D2 of the straight portion 1209B of the lens 1209).
The light emitted from the LED 181 by the light control unit 1178 is emitted from the lighting device at an orientation angle of 46 [°]. In an illuminating device provided with the light control unit 1178, a wide range including an object is irradiated.

(2) Orientation angle: 21 °
The light control unit 2178 shown in FIG. 24B is a type having an orientation angle of 21 [°], and includes a lens body 2177 and a lens cover 2179. The lens body 2177 has a plurality of lenses 2209 and a connecting portion 2210.
The outer peripheral surface of the enlarged diameter portion 2209A is a curved line (a three-dimensional curved surface) that bulges outward in the radial direction in the longitudinal section. A back-side recessed portion 2209Aa that is recessed with the central axis of rotation as the central axis is located on the end surface of the enlarged diameter portion 2209A on the side where the LED 181 is present, that is, on the end surface on the smaller diameter side (also outer diameter) of the enlarged diameter portion 2209A. Is provided. All or part of the LED 181 is arranged in the back side recessed portion 2209Aa.
The back side recessed portion 2209Aa has a circular cross-sectional shape, and the diameter (the inner diameter of the enlarged diameter portion 2209A) is constant from the opening to the bottom surface of the back side recessed portion 2209Aa regardless of the depth. The bottom surface 2209Ab of the back-side recessed portion 2209Aa is a curved surface that bulges toward the LED 181. The curved surface bulges so that the rotation center axis is closest to the LED 181.

An end surface (light emitting surface) opposite to the LED 181 in the straight portion 2209B is a flat surface orthogonal to the rotation center axis. The diameter D2 of the straight portion 2209B is in the range of 1.8 times to 2.6 times the diameter (outer diameter) D1 on the side where the LED 181 of the enlarged diameter portion 2209B is located. The length L2 of the straight portion 2209B is in the range of 1.5 times to 2.5 times the length L1 of the enlarged diameter portion 2209B.
The facing portion 2213a of the lens cover 2179 has a circular shape. The diffusing portion 2213b is located outside the facing portion 2213a and around the entire periphery of the facing portion 2213a, and has an annular shape. The outer diameter D3 of the ring is in the range of 2 to 4 times the diameter of the facing portion 2213a (the same as the diameter D2 of the straight portion 2209B of the lens 2209).
The surface of the lens cover 2179 is a diffusion portion 2113c. The diffusion unit 2113c is subjected to a diffusion process with the same degree of diffusion as the diffusion unit 2113b on the back surface. That is, the portion corresponding to the region where the lens body 2177 exists on the surface of the lens cover 2179 is the diffusing portion 2113c. The diffusion portion on the surface may exist in a portion corresponding to the lens, or may exist in all or a part of the region where the lens does not exist.

  The light emitted from the LED 181 by the light control unit 2179 is emitted from the illumination device at an orientation angle of 21 [°]. In an illuminating device including the light control unit 2179, the object is irradiated particularly brightly, and irradiation is performed so that the difference in brightness between the brightly irradiated portion and the peripheral portion is large. Note that there is almost no light that enters from the back side recessed portion 2209Aa and goes to the outer peripheral surface of the enlarged diameter portion 2209A, and is consequently condensed by the lens 2209.

(3) Orientation angle: 11 °
The light control unit 3178 shown in FIG. 24C is a type having an orientation angle of 11 [°], and includes a lens body 3177 and a lens cover 3179.
The outer peripheral surface of the enlarged diameter portion 3209A is a curved line (a three-dimensional curved surface) that bulges outward in the radial direction in the longitudinal section. A back-side recessed portion 3209Aa that is recessed with the central axis of rotation as the central axis is provided on the end surface of the expanded diameter portion 3209A on the side where the LED 181 exists, that is, on the end surface on the smaller diameter side (also outer diameter) of the expanded diameter portion 3209A. It has been. All or part of the LED 181 is arranged in the back side recessed portion 3209Aa.
The back-side recessed portion 3209Aa has a circular cross section, and has an inner peripheral surface 3209Ac that gradually decreases in diameter (the inner diameter of the diffusion portion 3209A) from the opening of the back-side recessed portion 3209Aa to the bottom surface 3209Ab. doing. The inner peripheral surface 3209Ac is linear or curved in the longitudinal section. The bottom surface 3209Ab of the back side recessed portion 3209Aa is a flat surface orthogonal to the rotation center axis.

A front-side recessed portion 3209Ba that is recessed with the rotation center axis as the central axis is provided on the end surface of the straight portion 3209B opposite to the enlarged diameter portion 3209A. The front side recessed portion 3209Ba has a circular cross section, and the diameter (the inner diameter of the straight portion 3209B) has a constant inner peripheral surface 3209Bc regardless of the depth from the opening of the front side recessed portion 3209Ba to the bottom surface 3209Bb. Have.
The bottom surface 3209Bb of the front side recessed portion 3209Ba is a curved surface that bulges toward the opening. The bottom surface 3209Bb bulges so that the rotation center axis is closest to the opening side. The front side recessed portion 3209Ba is larger than the back side recessed portion 3209Aa.
The diameter (outer diameter) D2 of the straight portion 3209B is in the range of 1.5 to 2.5 times the diameter D1 on the side where the LED 181 of the enlarged diameter portion 3209A is located. The length L2 of the straight portion 3209B is in the range of 2.0 times to 3.0 times the length L1 of the enlarged diameter portion 3209A.

The facing portion 3213a of the lens cover 3179 has a circular shape, and the diffusing portion 3213b exists outside the facing portion 3213a and around the entire periphery of the facing portion 3213a and has an annular shape. The outer diameter D3 of the ring is in the range of 2 to 4 times the diameter of the facing portion 3213a (the same as the diameter D2 of the straight portion 3209B of the lens 3209).
Here, the surface of the lens cover 3179 is a non-diffusing portion, but the surface may be a diffusing portion 2113c like the lens cover 2179. The surface diffusion portion may exist in a portion corresponding to a region where the lens body 3177 exists, or may exist in all or a part of a portion corresponding to a region where the lens 3209 does not exist, or the lens 3209. May be present in the entire region corresponding to the region where the lens 3209 exists, in the region where the lens 3209 exists and in the region corresponding to the front side recessed portion 3209Ba, or in the region where the lens 3209 exists. It may exist in a region that does not correspond to the front side recessed portion 3209Ba, or may exist in a combination thereof.

  The light emitted from the LED 181 by the light control unit 3178 is emitted from the lighting device at an orientation angle of 11 [°]. In an illuminating device including the light control unit 3178, the periphery of the object is brightly irradiated, and irradiation is performed so that a difference in brightness between the brightly irradiated portion and the peripheral portion becomes large. Note that there is almost no light that enters from the back side recessed portion 3209Aa and goes to the outer peripheral surface of the enlarged diameter portion 3209A, and is consequently collected by the lens 3209.

(4) Lens cover The lens cover has a facing portion that faces the light exit surface of the lens and a non-facing portion other than the facing portion. From the viewpoint of effective use of light emitted from the LED, it is preferable not to perform the diffusion treatment on the facing portion (no diffusion portion is provided). However, for example, a light diffusion process is applied to the opposite part in whole or in part so that it can cope with the case where the exhibition place moves in a large store and the spot-like light orientation does not match the display object. A prepared lens cover may be provided.

8). Use In the lighting device, the shape of the lens is appropriately designed in accordance with the light distribution characteristic required for the device. Here, the light distribution characteristic of the device is determined by the shape of the lens, and the diffusion state (diffusivity) in the light distribution characteristic is determined by the diffusion part of the lens cover. Since the lens cover is attached in a replaceable manner, for example, even in a lighting device attached to a store, different diffusion characteristics (light characteristics) can be obtained by exchanging the lens cover. At this time, since the mold for the lens cover is less expensive than the mold for the lens or the lens body, a plurality of types of lens covers having different diffusion characteristics are prepared rather than a plurality of types of lenses or lens bodies having different diffusion characteristics. It is cheaper to do.
Also, different diffusion characteristics can be obtained by replacing the lens cover. In this case, since the lens or the lens body is not exchanged, the opportunity for the operator (user) to touch the LED can be reduced.

<Modification>
1. Circuit Box Although the number of the fixed plugs 29 in the embodiment is one, there may be a plurality. Although the cross-sectional shape of the case 21 is substantially square, it may be trapezoidal or hexagonal. However, it is necessary to have an electrode plug and a fixed plug on the wall facing the duct rail.
The lighting circuit 101 according to the embodiment includes an AC circuit 103 and a DC circuit 105. The two circuit boards include an AC circuit board 109 on which the AC circuit component 107 is mounted and a DC circuit board 113 on which the DC circuit component 111 is mounted. Met. However, the circuit board may be composed of three or more. For example, the DC circuit may be divided into a first DC circuit and a second DC circuit and mounted on the first DC circuit board and the second DC circuit board.
In addition, the technique which mounts the circuit components which comprise a lighting circuit on two or more circuit boards can be utilized also for illuminating devices other than a spotlight, for example, a straight tube | pipe type LED lamp.
In the embodiment, the AC circuit board 109 has the AC circuit component 107 mounted on both main surfaces, and the DC circuit board 113 has the AC circuit component 107 mounted on both main surfaces. However, the AC circuit component 107 and / or the DC circuit component 111 may be mounted on one main surface of the circuit board.

2. Lamp body The lamp body 4 in the embodiment has a cylindrical shape, but may have other shapes. Another shape may be a cylindrical shape whose cross section is a polygon such as a square shape. Although the cylindrical body 175 is comprised from two members, the main cover 217 and the sub cover 219, it may be comprised by one member and may be comprised by three or more members.
3. Arm The arm 5 in the embodiment has a U shape, but may have an I shape, for example. Also in this case, it can be implemented by making the inside of the arm hollow and arranging a reinforcing member and an output cable inside.
4). Connection The connection between the circuit box 3 and the arm 5 in the embodiment is performed at the center in the longitudinal direction of the circuit box 3, but may be on one end side in the longitudinal direction.

5. Light Control Unit In the light control unit 178 in the embodiment, the lens cover 179 and the lens body 177 are integrally attached to the housing, but the lens cover may be attached to the housing side separately from the lens body.
The lens body has a plurality of lenses in a one-to-one correspondence with the LED. Depending on the lighting device, LEDs may be provided at a high density. In this case, the adjacent lenses are provided so as to overlap each other. Even in such a case, the shape of each lens is based on the shape of a rotating body.
The connecting portion 210 of the lens body 177 has a plate shape with a constant thickness at a portion where the lens 209 is not present, but may have a plate shape with a non-constant thickness. Further, the connecting portion may have a through hole in a portion where no lens exists. Although the connection part 210 connected the light emission surface side in the lens 209, for example, the LED may be connected to the existing side.
The light control unit 178 in the embodiment includes the lens cover 179 having one plate-like portion 213, but may include, for example, a lens cover having a plurality of plate-like portions. In this case, the contents of the diffusion process may be different or the same for each plate-like portion.

In the embodiment, the facing portion 213a of the lens cover 179 has not been subjected to the diffusion processing, but the facing portion may also be subjected to the diffusion processing.
The diffusion portion of the lens cover can change the degree of light diffusion by changing the shape of unevenness for diffusing light (for example, the average height difference of the unevenness and the average distance between adjacent unevenness) and the density of the unevenness. The diffusion degree of the diffusion process (diffusion part) applied to the surface of the lens cover and the diffusion process (diffusion part) applied to the back surface of the lens cover may be the same or different. As described above, since the diffusing portions suitable for the purpose and application can be provided on the front and back surfaces of the lens cover, it is possible to provide lighting devices having various diffusion degrees at low cost.
When there are a plurality of diffusion portions existing on the same surface of the lens cover, the diffusion degree of all the diffusion portions may be the same or different.

1 Lighting device 181 LED
177 Lens body 178 Light control unit 179 Lens cover 209 Lens 210 Connection part 213 Plate-like part 213a Opposing part 213b Diffusion part

Claims (6)

In a light control unit that is used in a lighting device including a plurality of LEDs as a light source and controls light distribution of light emitted from the plurality of LEDs,
A lens body in which a plurality of lenses made of resin that are provided corresponding to each LED and reflect or refract light emitted from the corresponding LED are integrated from the connecting portion;
A resin lens cover disposed on the light exit side of the lens body,
The said lens cover has a diffusion part which diffuses the light radiate | emitted from the said lens, and is a light control unit which can be attached or detached with respect to the said lens.
The light control unit according to claim 1, wherein the lens has a rotating body shape with the optical axis of the corresponding LED as a rotation center axis.
The light control unit according to claim 2, wherein the light emitting surface of the lens and the light incident surface of the lens cover are in contact with each other by design.
The lens has an inclined portion having a diameter that gradually increases along the rotation center axis, and a straight portion having a constant diameter,
The light control unit according to claim 3, wherein a side having a small diameter in the inclined portion of the lens is disposed on the LED side.
The light control unit according to claim 4, wherein an outer peripheral surface of the inclined portion is a total reflection surface that reflects light emitted from the corresponding LED toward the outer peripheral surface.
A plurality of LEDs;
A lighting device comprising: a light control unit that controls light distribution of light emitted from the plurality of LEDs;
The light control unit is the light control unit according to any one of claims 1 to 5. An illumination device.

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