JP2023038371A - lighting equipment - Google Patents

Abstract

An object of the present invention is to provide a lighting device that uses a conductor to reduce the number of manufacturing steps. [Solution] The lighting device includes an LED module 3, a power circuit unit 4, a base member 2 in which an LED board 31 of the LED module 3 and a circuit board 41 of the power circuit unit 4 are disposed on the front and back sides, and a circuit board. 41 and for electrical connection between the LED board 31 and the circuit board 41, the first through hole 31a (for inserting the conductor 45) provided in the LED board 31, and the conductive spring piece 35 ( A second through hole 21a for inserting the conductor 45 is provided in the base member 2. The conductor 45, which is installed vertically so as to pass through the through holes 31a and 21a from the overlapping part of the vertical LED board 31 and the circuit board 41 in the front and back directions, brings the LED board 31 and the circuit board 41 closer together. , connected to the conductive spring piece 35. [Selection diagram] Figure 5

Description

The present invention relates to a lighting device that includes an LED element and a power supply circuit unit.

In recent years, due to the growing awareness of the environment, LED lighting devices that use LED elements, which are excellent in power saving, as light sources, have been actively used, and technology has been proposed to provide LED modules at low cost by mounting LED elements on LED substrates. (For example, Patent Document 1).
In the technique of Patent Document 1, a metal pin is inserted into a through-hole of an LED substrate so as to be electrically connected to a wiring pattern on the LED substrate, and electrical connection with the outside is performed through the metal pin. Therefore, manufacturing man-hours can be reduced.

JP 2011-258606 A

In the above technology, the electrical connection between the outside (for example, a power supply circuit unit, etc.) other than the LED module and the metal pin (conductor) is not specific, and depending on the form of the external terminal to be connected, the manufacturing man-hours may be increased. may not be reduced.
An object of the present invention is to provide a lighting device that uses a conductor and can reduce the number of manufacturing processes.

The present invention provides an LED module in which LED elements are mounted on an LED substrate, a power supply circuit unit in which a plurality of circuit components are mounted on a circuit substrate and supplies power to the LED elements, and the LED substrate is on the front side. a base member disposed on a base member on which the circuit board is disposed on the back side; a plurality of conductors provided on one of the LED board and the circuit board for electrically connecting the LED board and the circuit board; a first through hole provided in the other of the LED board or the circuit board and through which the conductor is inserted; a first through hole provided in the other of the LED board or the circuit board and closing the first through hole; and a conductive spring piece elastically deformed as the conductor passes through the first through-hole, wherein the base member is provided with a second through-hole for the conductor to pass through. , the LED board and the circuit board are in a vertical state and partly overlapped in the front-back direction, and the conductor passes through the first through hole from the part overlapping the circuit board in the front-back direction. By erecting and bringing the LED board and the circuit board close to each other, the plurality of conductors penetrate through the first through hole and the second through hole and are electrically connected to the conductive spring piece. do.

According to the above configuration, since the conductive spring piece is provided on the counterpart side to which the conductor is electrically connected, the conductor can be relatively inserted into the through-hole of the counterpart substrate to ensure the electrical connection. can be done.

1 is a front view of a lighting device according to a first embodiment; FIG. 1 is a cross-sectional front view of a lighting device according to a first embodiment; FIG. In the first embodiment, (a) is a front perspective view of the state in which the housing is removed from the lighting device, and (b) is a rear perspective view of the state in which the housing is removed from the lighting device. is. In the first embodiment, (a) is a perspective view of a state in which a power supply circuit unit and an LED module are attached to a base member, and (b) is a perspective view of the power supply circuit unit and the LED module attached to the base member. is a perspective view of the attached state as seen from the back side. In the first embodiment, (a) is a cross-sectional perspective view of a state in which a power supply circuit unit and an LED module are attached to a base member, and (b) is a perspective view of the power supply circuit unit and an LED module attached to the base member. FIG. 3 is a perspective view of a cross section in a state where a module is attached, as seen from the back side; (a) is a perspective view of the lighting device according to the second embodiment as seen from the front side, and (b) is a perspective view of the lighting device according to the second embodiment as seen from the back side. In the second embodiment, (a) is a perspective view of a state in which the light-transmitting cover is removed from the lighting device as viewed from the front side, and (b) is a state in which the inner cover is removed from the state of (a). 1 is a perspective view seen from . In the second embodiment, (a) is a perspective view of the illumination device as seen from the back side, and (b) is a perspective view of the state in which the back cover is removed from the state of (a) as seen from the back side. In the second embodiment, (a) is a view from the back side of the lighting device with the back cover removed, and (b) is a front side view of the lighting device with the translucent cover and the inner cover removed. It is a view. FIG. 10 is a diagram illustrating electrical connection between the power supply circuit unit and the LED module in the second embodiment; FIG. 10 is a cross-sectional view illustrating electrical connection between the power supply circuit unit and the LED module in the second embodiment; FIG. 10 is a cross-sectional view illustrating fixing of the LED module in the second embodiment; It is a front view of the illuminating device which concerns on 3rd Embodiment. FIG. 11 is an exploded perspective view of a lighting device according to a third embodiment; It is a cross-sectional view of a lighting device according to a third embodiment. In the third embodiment, (a) is a view of the AA cross section of FIG. 13 viewed from the arrow direction, and (b) is a view of the BB cross section of FIG. 13 viewed from the arrow direction. In the third embodiment, (a) is a perspective view of the cylinder viewed from the translucent cover side, and (b) is a perspective view of the cylinder viewed from the base side. FIG. 11 is an exploded perspective view of a lighting device according to a fourth embodiment; It is a sectional view of the lighting installation concerning a 4th embodiment. In the fourth embodiment, (a) is a view of a cross section corresponding to the AA cross section of FIG. 13 viewed from the direction of the arrow, and (b) is a cross section corresponding to the BB cross section of FIG. It is the figure seen from. In the fourth embodiment, (a) is a perspective view of the cylinder as seen from the translucent cover side, and (b) is a perspective view of the cylinder as seen from the base side.

<Overview>
In a lighting device according to an aspect of an embodiment, an LED module in which LED elements are mounted on an LED substrate, and a power supply circuit unit in which a plurality of circuit components are mounted on a circuit substrate and supplies power to the LED elements a base member on which the LED board is arranged on the front side and the circuit board is arranged on the back side; and a base member provided on one of the LED board and the circuit board to electrically connect the LED board and the circuit board. a first through hole provided in the other of the LED board or the circuit board and through which the conductor is inserted; a first through hole provided in the other of the LED board or the circuit board and the first a conductive spring piece that closes one through-hole and elastically deforms as the conductor passes through the first through-hole, wherein the second through-hole for the conductor to pass through is provided on the base member, the LED board and the circuit board are in a vertical state and partly overlapped in the front and back direction, and the conductor extends from the part overlapping the circuit board in the front and back direction to the first By erecting to pass through the through holes and bringing the LED board and the circuit board close to each other, the plurality of conductors pass through the first through holes and the second through holes to form the conductive bodies. Make an electrical connection with the spring strip.
A lighting device according to another aspect of the embodiment has an insulating box that accommodates at least part of the conductor and the circuit board in a state parallel to the front-back direction.
A lighting device according to another aspect of the embodiment has a housing that accommodates the insulating box inserted from the front side in a state parallel to the front and back directions.
In a lighting device according to another aspect of the embodiment, the base member has a plurality of heat radiation fins extending to the rear side in a peripheral portion of the base member excluding a central portion, and the second through hole is located in the central portion. and the insulating box is provided in the central portion so as to be surrounded by the plurality of heat radiating fins.
A lighting device according to an aspect of the specification includes an LED module in which an LED element is mounted on an LED board, and a power supply circuit unit in which a plurality of circuit components are mounted on the circuit board and supplies power to the LED element. , a conductor for electrically connecting the LED board and the circuit board is provided on one of the LED board and the circuit board, and the other of the LED board and the circuit board is provided with a through hole for the conductor to pass through, and a conductive spring piece that closes the through hole and is elastically deformed as the conductor passes through the through hole, the LED board and the The circuit boards are in a parallel state and partially overlapped in the front-back direction, and the conductor provided on the one substrate passes through the through-hole from the portion of the one substrate that overlaps the other substrate in the front-back direction. and the LED board and the circuit board are brought close to each other, so that the conductor passes through the through hole and is electrically connected to the conductive spring piece.
In a lighting device according to another aspect of the specification, the one substrate is the circuit substrate, the other substrate is the LED substrate, and the conductive spring pieces are provided on a surface of the LED substrate opposite to the circuit substrate. is provided in
In a lighting device according to another aspect of the specification, a plate-shaped base member is provided on which the LED board is mounted on the front surface and the circuit board is mounted on the back surface, the LED board is disc-shaped, and the LED board is is fastened to the base member by a fastener.
In a lighting device according to another aspect of the specification, the conductor has a plate-like shape or a bar-like shape, and the conductive spring piece is formed by bending a single rectangular metal plate. It has a hole for passing the conductor in the center, and both sides of the hole are curved in a "<" shape.
A lighting device according to an aspect of the specification includes an LED module in which an LED element is mounted on an LED board, and a power supply circuit unit in which a plurality of circuit components are mounted on the circuit board and supplies power to the LED element. , a conductor for electrically connecting the LED board and the circuit board is provided on one of the LED board and the circuit board, and the other of the LED board and the circuit board The other substrate is provided with a through hole for the conductor to pass through and a conductive spring piece that closes the through hole and is elastically deformed as the conductor passes through the through hole. , and is fastened to the base member with fasteners at a portion where the surface on the side where the one substrate exists is in contact with the base member.
In a lighting device according to another aspect of the specification, the one substrate is the circuit substrate, and the other substrate is the LED substrate.
In a lighting device according to another aspect of the specification, the LED board has a disk shape, and a portion near the peripheral edge of the LED board is fastened to the base member by the fastener. As a result, blocking of light emitted from the LED element can be reduced.
In a lighting device according to another aspect of the specification, the fastener is a screw body. Thereby, the other substrate can be easily fixed to the base member.

<First embodiment>
1. Overview A first embodiment will be described with reference to FIGS. 1 to 5. FIG.
The illumination device 1 according to the first embodiment is a so-called spotlight that is used by being attached to a duct rail (not shown) such as a ceiling.
As shown in FIG. 2, the illumination device 1 has a base member 2, an LED module 3 on the front side of the base member 2, and a power supply circuit unit 4 on the back side of the base member 2, respectively. The power supply circuit unit 4 and the LED module 3 are electrically connected by metal pins 45 .
The illumination device 1 includes a lens member 5 mounted on a base member 2 and covering the LED module 3 from the front side, a housing 6 housing the base member 2, the LED module 3, the power supply circuit unit 4, and the lens member 5, and the illumination device. 1 to a duct rail, and an arm 8 connecting the plug box 7 and the housing 6. - 特許庁

2. Configuration of Each Part (1) Base member Description will be made mainly with reference to FIG. 4 .
The base member 2 has a disk-shaped base portion 21 , a fin portion 25 having a plurality of fins 23 extending from the rear surface of the base portion 21 to the rear surface, and an attachment portion 27 for attaching the base member 2 to the arm 8 .
The base portion 21 has a pair of through holes 21a for the metal pins 45 in its central portion. A plurality of fins 23 are provided upright on the peripheral portion of the base portion 21 excluding the central portion thereof. The mounting portion 27 includes an extension piece 27 a extending from two locations on the back surface of the base portion 21 across the center of the base portion 21 to the back side, and an extension piece 27 a provided on the extension piece 27 a and extending along the central axis of the housing 6 . , and a screw hole 27b directed to the . As shown in FIG. 2, the threaded body 11 that connects with the arm 8 is screwed into the threaded hole 27b. 2 and 3, the power supply circuit unit 4 is arranged in the central space on the back side of the base portion 21 .

(2) LED module Mainly, it demonstrates using (a) of FIG. 4 and (a) of FIG.
The LED module 3 is composed of an LED substrate 31 and a plurality of LED elements 33 . The LED substrate 31 has through holes 31 a for metal pins 45 . The LED module 3 has metal spring pieces 35 on the LED substrate 31 that contact the metal pins 45 . The metal spring piece 35 is formed by bending a thin rectangular metal plate at the center in the longitudinal direction. A portion from the bent portion to one end of the metal spring piece 35 forms a fixed portion 35a that is fixed to the LED substrate 31, as shown in FIG. 5(a). As shown in FIG. 5A, the metal spring piece 35 from the bent portion to the other end closes the through hole 31a of the LED substrate 31 and is elastically deformed according to the insertion (passage) of the metal pin 45. It is a spring piece 35b.
As shown in FIG. 4A, the LED board 31 is fixed to the base portion 21 by screws 37 in a state in which the back surface is in contact with the front surface of the base portion 21 .

(3) Power supply circuit unit Description will be made with reference to FIGS. 2 to 5. FIG.
As shown in FIG. 2, the power supply circuit unit 4 is housed in an insulating box 43 with circuit components mounted on a circuit board 41 . As shown in FIG. 5, the power supply circuit unit 4 penetrates the insulation box 43 (not shown in FIG. 5), the through hole 21a of the base portion 21, and the through hole 31a of the LED substrate 31, and extends from the LED module 3. It has a metal pin 45 that contacts the metal spring piece 35 . The circuit board 41 here is supported in an insulating box 43 so as to be perpendicular to the LED board 31 . The insulation box 43 also has a function of blocking heat emitted from the fins 23 of the base member 2 .

(4) Lens member Description will be made with reference to FIGS. 2 and 3. FIG.
As shown in FIGS. 2 and 3, the lens member 5 includes a plurality of lenses 51 arranged to face each LED element 33, a connecting plate 53 connecting the lenses 51 on the side opposite to the LED elements 33, It has a tubular portion 55 extending from the outer peripheral edge of the connecting plate 53 toward the base portion 21 in a tubular shape, and a fixing portion 57 for fixing the lens member 5 to the base member 2 .
The inner diameter of the cylindrical portion 55 is larger than the outer diameter of the LED substrate 31 . The fixing portion 57 is formed by a portion recessed from the cylindrical portion 55 in the central axis direction of the cylindrical portion 55, and a groove for screwing is provided in the recessed portion.
The lens member 5 is fixed to the base portion 21 with the rear surface of the fixing portion 57 in contact with the peripheral edge portion of the front surface of the LED substrate 31 . The height of the cylindrical portion 55 is set so that the distance between the lens 51 and the LED element 33 is a predetermined value. In addition, as shown in FIG. 2, an inner brim portion 63b of a front housing 63, which will be described later, is fitted in the gap between the cylindrical portion 55 of the lens member 5 and the base portion 21 of the base member 2. As shown in FIG.

(5) Case Description will be made mainly with reference to FIGS. 1 and 2. FIG.
The housing 6 mainly has a rear housing 61 arranged on the rear side of the base portion 21 of the base member 2 and a front housing 63 arranged outside the LED module 3 and the lens member 5 .
The back housing 61 has a cylindrical shape with a bottom, and the end on the opening side is coupled to the front housing 63 . The rear housing 61 has through holes 61c (see FIG. 1) in the peripheral wall 61a and the bottom wall 61b, and through holes 61d (see FIG. 2) in the peripheral wall 61a. The through hole 61c is for heat dissipation. 61 d of through-holes are for attachment to the arm 8, and the screw body 11 screwed to the screw hole 27b of the attachment part 27 of the base member 2 penetrates. As a result, the rear side housing 61 is attached to the arm 8 together with the base member 2 so that the posture can be adjusted.
The front housing 63 has a tubular portion 63a and an inner brim portion 63b extending inwardly from the rear open end of the tubular portion 63a. The inner flange portion 63b fits into the gap between the cylindrical portion 55 of the lens member 5 and the base portion 21 of the base member 2, as shown in FIG. As a result, the front housing 63 is attached to the base member 2 side.

(6) Plug box Description will be made with reference to FIGS. 2 and 3. FIG.
The plug box 7 includes a housing 71, an electrode plug 73 with an operation lever provided on the rear surface of the housing 71, a positioning portion 75 provided on the rear surface of the housing 71, and a housing 71. and an arm coupling member 77 .
The housing 71 has a long rectangular parallelepiped shape along the duct rail. The housing 71 has a housing body 71a having an opening on the back side, a lid body 71b that closes the opening of the housing body 71a, and a projecting portion 71c that protrudes from the surface of the housing body 71a in a cylindrical shape with a bottom. ing.
The lid 71b has a rectangular plate shape, and has positioning portions 75 on both ends of the back side in the longitudinal direction. The positioning part 75 extends to the rear side and fits into the groove of the duct rail.
The electrode plug 73 includes a bottomed tubular portion 73a extending in a bottomed cylindrical shape from a through hole of the lid 71b, a pair of electrodes 73b, 73b provided on the tip side of the bottomed tubular portion 73a, and a bottomed tubular portion 73a. An operation lever 73c is provided in the longitudinal center of the bottom tubular portion 73a, and the front side portion of the bottomed tubular portion 73a is supported inside the housing 71 so as to be rotatable around the central axis.
The arm coupling member is composed of the nut body 77 . The nut body 77 is screwed with a threaded body 85 extending from the arm 8 .
As shown in FIGS. 2 and 3B, the lid body 71b is attached to the housing body 71a by screwing the screw body 13 into the screw hole of the boss on the inner surface of the front wall of the housing body 71a. Fixed. An electric cable connected to the electrode 73b is led to the inside of the arm 8 from the inside of the bottomed cylindrical portion 73a through the inside of the nut body 77 .

(7) Arm Description will be made mainly with reference to FIG.
The arm 8 has a hollow "U" shape, and rotatably sandwiches the rear housing 61 and the base member 2 with a pair of ends 81, 81 located on the opening side of the "U". The axis of rotation here is the direction connecting the pair of ends 81 , 81 . The arm 8 has a through-hole 83 on the side opposite to the pair of ends 81, 81 on the opening side, and a threaded body 85 arranged inside extends from the through-hole 83 to extend from the projecting portion 71c of the plug box 7. , and is screwed with the nut body 77 .

3. Connection between LED Board and Power Supply Circuit Unit Description will be made mainly with reference to FIG.
The power supply circuit unit 4 has a pair of metal pins 45 at the end of the circuit board 41 on the side of the LED module 3 , and the metal pins 45 are inserted through the through holes 31 a of the LED board 31 of the LED module 3 . As the metal pin 45 passes through the through hole 31 a , the metal spring piece 35 is elastically deformed while maintaining contact with the metal pin 45 . This ensures electrical connection between the LED board 31 and the circuit board 41 .
In this way, the electrical connection between the LED module 3 and the power supply circuit unit 4 can be easily accomplished simply by inserting the metal pin 45 into the through hole 31 a of the LED substrate 31 .

4. Fixation of LED Board The LED module 3 is mounted by fixing the LED board 31 to the base portion 21 of the base member 2 with a screw body 37 that is a fastener. At this time, since the LED board 31 is in contact with the base portion 21 , it is possible to reduce an excessive load acting on the LED board 31 when screwing the screw body 37 into the screw hole of the base portion 21 . In this way, the threaded body 37 passing through the contact portion of the LED board 31 with the base portion 21 can be firmly fastened, and the threaded body 37 can be prevented from loosening due to the restoring force of the metal spring piece 35. .
<Second embodiment>
1. Overview A second embodiment will be described with reference to FIGS. 6 to 12. FIG.
A lighting device 201 according to the second embodiment is a so-called ceiling light that is used by being attached to a ceiling or the like.
As shown in FIGS. 6, 7 and 8, the illumination device 201 includes a base member 202, an LED module 203 (see FIG. 7B) on the front side of the base member 202, and an LED module 203 on the back side of the base member 202. Each has a power supply circuit unit 204 (see (b) of FIG. 8). The power supply circuit unit 204 and the LED module 203 are electrically connected by metal pins 2045a (see FIGS. 10 and 11).
As shown in FIGS. 6, 7 and 8, the illumination device 201 includes an outer cover 205 (see FIG. 6) attached to the base member 202 and covering the LED module 203 from the front side, and an LED module inside the outer cover 205. An inner cover 206 (see FIG. 7A) covering 203, a hooking blade holding member 207 provided in a central through-hole of the base member 202, and a power supply circuit unit 204 attached to the base member 202 are viewed from the back side. It further includes a back cover 208 (see FIG. 8(a)).

2. Configuration of Each Part (1) Base Member Description will be made mainly with reference to FIGS. 7 and 8. FIG.
The base member 202 has a central through-hole and an annular front flat portion 2021 around the through-hole. The above-described hooking blade holding member 207 is attached to the through hole, and the through hole does not appear in FIG. The LED module 203 is attached in close contact with the surface of the front flat portion 2021 .
The base member 202 has an inner cylindrical portion 2023 extending cylindrically from the outer peripheral edge of the front flat portion 2021 to the back side. A rear cover 208 is attached to the inner cylindrical portion 2023 to protect the power supply circuit unit 204 on the rear surface of the front flat portion 2021 . In other words, as shown in FIG. 8, the front flat portion 2021, a portion of the inner cylindrical portion 2023, and the back cover 208 form a housing space for housing the power supply circuit unit 204. As shown in FIG.
The base member 202 has an annular rear flat portion 2025 extending from the rear edge of the inner tubular portion 2023 to the outside of the inner tubular portion 2023 in parallel with the front flat portion 2021 . A cushioning material 2013 is attached to the back surface of the back flat portion 2025 .
As shown in FIGS. 11 and 12, the base member 202 includes an outer cylindrical portion 2027 extending cylindrically from the outer peripheral edge of the back flat portion 2025 to the front side, and an outer cylindrical portion 2027 extending radially outward from the front edge of the outer cylindrical portion 2027 . It has an outer collar portion 2029 that projects outward.

(2) LED module Mainly referring to FIG. 7(b) and FIG. 9, description will be made.
The LED module 203 has a plurality of LED elements 2031 and an LED substrate 2033 on which the plurality of LED elements 2031 are mounted. As the plurality of LED elements 2031 here, a plurality of types of different emission colors are used for toning lighting. There are three LED modules 203 here, and the three LED modules 203 are arranged in a ring surrounding the central through-hole of the base member 202 (not shown in FIGS. 7B and 9). ing. Terminals 2033a of the three LED boards 2033 are connected to each other by electric cables (not shown). Each LED board 2033 has a "V" shape, and the LED elements 2031 are mounted in a row along the longitudinal direction of the LED board 2033 . As a result, the plurality of LED elements 2031 are arranged in an annular or hexagonal annular shape as a whole.

Of the three LED boards 2033, at least one LED board 2033A has a through hole 2033b for the metal pin 2045a, and as shown in FIG. It is provided on the substrate 2033A. Although the through-hole 2033b is not shown in the drawing because it is the metal spring piece 2035, it is marked with "2033b" to distinguish it from other through-holes.
The metal spring piece 2035 closes the through hole 2033b of the LED board 2033A and elastically deforms as the metal pin 2045a passes through the through hole 2033b. The metal spring piece 2035 is connected to the wiring pattern (not shown) of the LED board 2033A.
As shown in FIG. 10, the metal spring piece 2035 is formed by bending a rectangular thin metal plate. The metal spring piece 2035 has a through-hole 2035a for the metal pin 2045a in the center of the metal plate in the longitudinal direction, and has a "<"-shaped portion 2035b on both sides of the through-hole 2035a. The through holes 2035a are provided corresponding to the through holes 2033b of the LED substrate 2033A. The "<"-shaped portion 2035b has a bent portion of the "<"-shaped portion located inside (above the through-hole 2035a). There are nine metal pins 2045a here. Metal pins 2045a are for dimming, toning, sensor and night light.

(3) Power supply circuit unit Description will be made mainly using FIG. 8(b) and FIG. 9(a).
The power supply circuit unit 204 includes a power conversion circuit for generating power to be supplied to the LED element 2031 from AC power, a dimming circuit for dimming lighting, a toning circuit for toning lighting, and the like. The power supply circuit unit 204 is composed of a plurality of circuit components 2041 , a circuit board 2043 on which the circuit components 2041 are mounted, and a connecting portion 2045 for electrically connecting to the LED module 203 . Needless to say, the circuit components are electronic components that constitute the circuit, and only one circuit component 2041 is shown in FIGS. 8(b) and 9(a) for the sake of convenience.
The circuit board 2043 has a wiring pattern (not shown) for connecting a plurality of circuit components 2041 to form the circuit. The circuit board 2043 has an overall shape similar to an "L" with an arc-shaped outer peripheral edge, and a through-hole (not shown in the figure because of the hooking blade holding member 207) of the front flat portion 2021 of the base member 202. ) are arranged along the As shown in FIG. 12, the circuit board 2043 is fixed with a resin rivet 2015 while being spaced from the front flat portion 2021 of the base member 202 . As a result, electrical safety can be improved even when the base member 202 is made of a metal material.
The circuit board 2043 is connected via an electric cable 2047 to a pair of hooking blades 2071 on the hooking blade holding member 207 .

The connecting portion 2045 will be described with reference to FIG. 11 .
The connecting portion 2045 has nine metal pins 2045a extending toward the LED substrate 2033 and a support 2045b supporting the nine metal pins 2045a. The nine metal pins 2045a are spaced apart and supported by a support 2045b in an upright state with respect to the circuit board 2043. As shown in FIG. The nine metal pins 2054a here are arranged in a line. The metal pin 2054a is provided at a portion where the circuit board 2043 and the LED board 2033 overlap in the front-back direction. Note that the front flat portion 2021 of the base member 202 has one through hole through which nine metal pins 2054a are inserted.

(4) Outer Cover Description will be made with reference to FIGS. 6 to 8. FIG.
The outer cover 205 here has a frame 2051 attached to the base member 202 side and a dome-shaped translucent cover 2053 attached to the frame 2051 .
The frame 2051 has an annular shape with a through hole in the center, and the back side of the base member 202 is fitted in the through hole. The ring here is a circular ring. The frame 2051 includes an annular portion 2051a, an inner peripheral groove portion 2051b provided on the inner peripheral edge of the annular portion 2051a and having an open back side, and a tubular portion 2051c extending from the outer peripheral edge to the front side in a stepped tubular shape. have.
In the frame 2051, with the outer collar portion 2029 of the base member 202 fitted in the inner peripheral groove portion 2051b, the engagement piece 2051d provided inside the inner peripheral groove portion 2051b is engaged as shown in FIG. By engaging with the engagement groove 2067 on the base member 202 side, it is detachably attached to the base member 202 side. The engaging groove 2067 is formed between the frame mounting portion 2065 provided on the outer peripheral edge of the inner cover 206 and the rear flat portion 2025 of the base member 202 .
As shown in FIG. 7, engaging projections 2051e that engage with engaging recesses (not shown) of the translucent cover 2053 are provided on the inner peripheral surface of the cylindrical portion 2051c at intervals in the circumferential direction. , the engaging projection 2051e is engaged with the engaging recess, and the translucent cover 2053 is attached to the frame 2051. As shown in FIG.

(5) Inner Cover Description will be made with reference to FIG. 7(a).
The inner cover 206 covers the LED module 203 in close proximity to the LED module 203 . This can prevent the user from touching the LED element 2031 when attaching the lighting device 201 to a hanging ceiling or the like on the installation surface with the translucent cover 2053 removed, for example.
The inner cover 206 includes a dome-shaped bulging portion 2061 that bulges toward the front side, an annular portion 2063 that extends from the periphery of the bulging portion 2061 in parallel with the back flat portion 2025, and a frame mounting portion 2065 for mounting the frame 2051. and The annular portion 2063 has cutout portions spaced apart in the circumferential direction, and frame mounting portions 2065 are provided corresponding to the cutout portions. The frame mounting portion 2065 extends outward in the same manner as the annular portion 2063 , but the extending position is on the front side of the annular portion 2063 . As a result, an engagement groove 2067 is formed between the extending portion of the frame mounting portion 2065 and the rear flat portion 2025 of the base member 202 . The engaging piece 2051 d of the frame 2051 engages with this engaging groove 2067 . 7 shows the state before engaging with the engaging groove 2067 so that the engaging piece 2051d of the frame 2051 can be seen.
The inner cover 206 is composed of two cover bodies 206A and 206B. The two cover bodies 206A and 206B are fixed to the base member 202 with screws.

(6) Hooking Blade Holding Member Mainly referring to FIGS. 7 and 8, description will be made.
The hooking blade holding member 207 holds a pair of hooking blades 2071, 2071 attached to a hooking ceiling or the like on the installation surface. The hooking blade holding member 207 includes a bottomed cylindrical portion 2073 (see FIG. 8) that is inserted into the through hole of the base member 202 from the front side and has an opening positioned on the front side, and from the opening side edge of the bottomed cylindrical portion 2073. A flat portion 2075 (see FIG. 7B) extending outward and in contact with the peripheral portion of the through-hole of the base member 202, and a bottom portion of the bottomed cylindrical portion 2073 protruding in a hollow shape toward the front side and inside and a projecting portion 2077 in which the hooking blades 2071, 2071 are provided in the space. The hooking blade holding member 207 is made of a highly transparent resin material. The protruding portion 2077 is used for the user to hold when attaching the lighting device 201 .

(7) Back Cover Mainly referring to FIG. 8(a) and FIG. 11, description will be made.
The back cover 208 covers the back side of the inner cylindrical portion 2023 of the base member 202 in a fan shape except for the bottom portion of the bottomed cylindrical portion 2073 of the hooking blade holding member 207 . The back cover 208 has a plate portion 2081 having an opening corresponding to the bottom of the bottomed cylindrical portion 2073, and extends from the plate portion 2081 to the front side through the inner cylindrical portion 2023 of the base member 202 to abut on the front flat portion 2021. It has a semi-cylindrical portion 2083 (see FIG. 11).

<Third Embodiment>
1. Overall Configuration An overview of the illumination device 4001 according to this embodiment will be described mainly with reference to FIGS. 13 and 14. FIG.
The illumination device 4001 includes an LED module 4003 and a power supply circuit unit 4005 inside an envelope 4007 . The illumination device 4001 receives AC power, which is a commercial power source, from a base 4077 forming a part of the envelope 4007, and uses the DC power converted by the power supply circuit unit 4005 to cause the LED element 4031 to emit light (light up).
The envelope 4007 here is composed of four members: a translucent cover 4071 , a cylindrical body 4073 , a base holder 4075 and a base 4077 . The LED module 4003 is positioned on the translucent cover 4071 side, and the power supply circuit unit 4005 is positioned on the base 4077 side.

2. Configuration of each part (1) LED module Description will be made with reference to FIG. 14 .
The LED module 4003 has one or more LED elements 4031 , an LED substrate 4033 on which the LED elements 4031 are mounted, and a connecting portion 4035 for connecting to the power supply circuit unit 4005 .
Six LED elements 4031 are mounted here. The LED substrate 4033 has a disk shape, and six LED elements 4031 are arranged in a ring shape (for example, an annular shape) at a portion near the periphery of the LED substrate 4033 at equal intervals in the circumferential direction. The LED board 4033 has a plurality of through holes 4033a (here, two) for fixing the LED module 4003 to the cylindrical body 4073 .
The connecting portion 4035 here is provided in the inner portion of the ring where the LED element 4031 is arranged. The connecting portion 4035 is electrically connected to a wiring pattern that supplies power to the LED element 4031 . The connecting portion 4035 is composed of a through hole 4035 a provided in the LED substrate 4033 and a metal spring piece 4035 b provided in the LED substrate 4033 .

The metal spring piece 4035b is provided around the through hole 4035a so as to come into contact with the extending portion of the metal pin 4055a extending from the through hole 4035a. A metal spring piece 4035b is provided here for each through hole 4035a.
The metal spring piece 4035b closes the through hole 4035a of the LED substrate 4033 and elastically deforms as the metal pin 4055a passes through. There is a pair of metal spring pieces 4035b, and the metal spring pieces 4035b are hook-shaped. The pair of metal spring pieces 4035b, 4035b are arranged with the through hole 4035a sandwiched therebetween in a state in which the curved or bent portion is positioned above the through hole 4035a. An end of the metal spring piece 4035 b opposite to the curved or bent side is fixed to the LED substrate 4033 .

(2) Power supply circuit unit Mainly referring to FIG. 14, description will be made.
The power circuit unit 4005 includes a power circuit for generating power to be supplied to the LED element 4031 from AC power. The power supply circuit unit 4005 is composed of a plurality of circuit components 4051 , a circuit board 4053 on which the circuit components 4051 are mounted, and a connecting portion 4055 for connecting with the LED module 4003 .

A circuit component 4051 is an electronic component that constitutes the power supply circuit.
The circuit board 4053 has a wiring pattern for connecting a plurality of circuit components 4051 to form the power supply circuit. The circuit board 4053 has a rectangular shape as a whole and is arranged along the central axis of the cylindrical body 4073 . The circuit board 4053 here is arranged in parallel with the central axis of the cylindrical body 4073 and arranged so as to be positioned on the central axis. Also, unlike the present embodiment, the circuit board may be arranged so as to be offset from the central axis.
The circuit board 4053 has a pair of notch portions 4053a on the base 4077 side. The missing portion 4053a here has a rectangular shape. In other words, the circuit board 4053 has a pair of projecting portions 4053b on the LED module 4003 side. The protruding portion 4053b is inserted into the groove 4735a on the inner peripheral surface of the cylindrical body 4073 from the side where the LED module 4003 exists, and fits into the groove 4735a. The length of the projecting portion 4053b and the groove 4735a of the circuit board 4053 is such that when the circuit board 4053 and the LED module 4003 are assembled into the cylindrical body 4073, the edge of the circuit board 4053 on the LED module 4003 side is the LED board of the LED module 4003. 4033 is configured to be close to or abut. Further, the edge of the circuit board 4053 on the base 4077 side is configured to be positioned inside the cylinder 4073 without extending to the inside of the base holder 4075 .

The connection part 4055 is provided at the end of the circuit board 4053 on the LED module 4003 side and electrically connected to the wiring pattern of the circuit board 4053 . The connecting portion 4055 is composed of a metal pin 4055a. The metal pin 4055a is fixed to the circuit board 4053 with the tip side extending from the circuit board 4053 toward the LED module 4003 side. There are two metal pins 4055a, which are spaced apart.

(3) Envelope (3-1) Translucent Cover Description will be made mainly with reference to FIGS. 14 and 15. FIG.
The translucent cover 4071 covers the LED module 4003 and transmits and emits the light emitted from the LED module 4003 . The translucent cover 4071 has a shape obtained by cutting a short axis side end of a hollow oval sphere with a plane, for example. The translucent cover 4071 has a stepped portion 4071a as an attachment portion at the open end. The step 4071a here is configured such that the inner peripheral portion protrudes from the opening end face. In other words, the step 4071a is recessed on the outer peripheral side of the open end of the translucent cover 4071 .
The translucent cover 4071 is attached to the cylindrical body 4073 by using an adhesive or the like, for example, in a state where the part with the step 4071a is fitted to the step 4738a at the opening end of the cylindrical body 4073 on the LED module 4003 side. there is The translucent cover 4071 is made of, for example, a translucent resin material. Diffusion particles may be mixed in the resin material of the translucent cover 4071, or the inner peripheral surface and the outer peripheral surface may be subjected to a diffusion treatment, if necessary.

(3-2) Cylinder A description will be given with reference to FIGS. 14 to 17, especially FIG.
The cylindrical body 4073 mainly has the function of mounting the LED module 4003 and the power supply circuit unit 4005 thereon. The cylindrical body 4073 here has the function of accommodating the power supply circuit unit 4005 therein and mounting the LED module 4003 thereon. The power supply circuit unit 4005 is attached to the cylindrical body 4073 using the LED module 4003 .

The inner diameter of the cylindrical body 4073 is substantially constant except for the open end on the LED module 4003 side. The outer diameter of the cylindrical body 4073 increases along the central axis from the open end on the base 4077 side to the open end on the LED module 4003 side, and the overall appearance of the cylindrical body 4073 is tapered.
The cylindrical body 4073 has a plurality of grooves 4731 provided at intervals in the circumferential direction on its outer peripheral surface, and the space between the circumferentially adjacent grooves 4731 serves as a fin portion 4732 for heat dissipation. With such a configuration, the cylindrical body 4073 has the function of a heat sink that radiates heat generated from the LED module 4003 and the power supply circuit unit 4005 . Note that the groove 4731 here is recessed toward the central axis and extends parallel to the central axis. In FIGS. 14 and 17, the groove 4731 has an arrow at the tip of the lead wire to distinguish it from the fin portion 4732 .

The cylindrical body 4073 includes a straight cylindrical portion 4733 having a constant inner diameter and an outer diameter, and an inner diameter and an outer diameter that increase with distance from the straight cylindrical portion 4733 in the central axis direction from the end of the straight cylindrical portion 4733 on the LED module 4003 side. A tapered cylindrical portion 4734, a straight cylindrical portion 4733, a fin portion 4732 provided on the outer periphery of the tapered cylindrical portion 4734, a mounting portion 4735 for mounting the power supply circuit unit 4005, and a fixing portion for fixing the LED module 4003. 4736.
As shown in FIGS. 14 to 17, the cylindrical body 4073 includes a metal cylinder 4074 that is in close contact with the inner peripheral surface of the straight cylindrical portion 4733, ie, the inner peripheral surface of the straight cylindrical portion 4733, excluding the end on the LED module 4003 side.

The tubular body 4073 has a plurality of “L”-shaped ribs 4737 extending from the end of the tapered tubular portion 4734 on the straight tubular portion 4733 side toward the end on the mouthpiece 4077 side at intervals in the circumferential direction (here is four.) It has. In other words, the tubular body 4073 has an extending portion 4737a extending in parallel to the inner peripheral surface of the straight tubular portion 4733 with a space radially inwardly with respect to the inner peripheral surface of the straight tubular portion 4733, and a taper at the extending portion 4737a. A rib 4737 having a connecting portion 4737 b that connects the end on the cylindrical portion 4734 side and the tapered cylindrical portion 4734 is provided. The connecting portion 4737b extends in a direction orthogonal to the central axis of the cylindrical body 4073, and the extending portion 4737a extends parallel to the central axis.
The metal tube 4074 is incorporated between the extending portion 4737 a of the rib 4737 and the inner peripheral surface of the straight tube portion 4733 . In a state in which the metal cylinder 4074 is incorporated, the rib 4737 extends from the end of the tapered cylinder part 4734 on the straight cylinder part 4733 side toward the central axis (connecting part 4737b). Beyond the inner peripheral surface, it extends toward the end on the base 4077 side (extended portion 4737a). In other words, the ribs 4737 are provided along the end surface and inner peripheral surface of the metal cylinder 4074 .

The mounting portion 4735 and the fixing portion 4736 are provided on the rib 4737 . The mounting portion 4735 here is provided on a pair of ribs 4737 that face each other across the central axis of the cylindrical body 4073, and the fixing portion 4736 is provided on a pair of ribs 4737 that sandwich the central axis and is not provided with the mounting portion 4735. ing.
As shown in FIGS. 14 and 17, the mounting portion 4735 is configured by a groove 4735a extending from the connecting portion 4737b to the extending portion 4737a. The groove 4735a extends to the middle of the end of the extending portion 4737a on the base 4077 side, and the length of the groove 4735a is approximately equal to the length of the overhanging portion 4053b of the circuit board 4053 . As shown in FIGS. 14 and 17, the fixing portion 4736 is configured by a screw hole 4736a extending from the connecting portion 4737b to the extending portion 4737a. It should be noted that the end faces of the four connecting portions 4737b on the tapered cylindrical portion 4734 side have the same height when the end on the base 4077 side is used as a reference.

As shown in FIG. 17, the tubular body 4073 has a cover attachment portion 4738 for attaching the translucent cover 4071 to the end of the tapered tubular portion 4734 on the translucent cover 4071 side. The cover attachment portion 4738 is formed by a stepped portion 4738a recessed from the inner peripheral side.
As shown in FIG. 17, the cylindrical body 4073 has a base fixing portion 4739 for fixing the base 4077 at the end on the base 4077 side. Since the base 4077 is fixed via the base holder 4075 here, the base fixing part 4739 is for fixing the base holder 4075 . The base fixing portion 4739 is composed of a step 4739a provided at the end of the straight tubular portion 4733 on the side of the base 4077, and a recess provided on the peripheral surface parallel to the central axis forming the step 4739a. The step 4739a is recessed on the outer peripheral side. Here, the recess provided on the peripheral surface is configured by a peripheral groove 4739b extending in the peripheral direction.
The cylindrical body 4073 is made of a resin material. The metal cylinder 4074 may be arranged in the cylinder by insert molding, which is integrally formed when the cylinder 4073 is molded, or the metal cylinder 4074 may be inserted after the cylinder 4073 is molded.

(3-3) Mouthpiece Holder Description will be made with reference to FIGS. 14 and 15. FIG.
The base holder 4075 has a tubular shape. The mouthpiece holder 4075 includes a large-diameter tubular portion 4751 located on the tubular body 4073 side, a small-diameter tubular portion 4753 located on the mouthpiece 4077 side, and a tapered tubular portion 4755 connecting the large-diameter tubular portion 4751 and the small-diameter tubular portion 4753 . and The large-diameter tubular portion 4751 has larger inner and outer diameters than the small-diameter tubular portion 4753 . The tapered tubular portion 4755 linearly decreases in diameter toward the small-diameter tubular portion 4753 .
The mouthpiece holder 4075 has a cylinder-side fixing portion 4757 fixed to the cylinder 4073 and a mouthpiece-side fixing portion to which the mouthpiece 4077 is fixed. The cylinder-side fixing portion 4757 is composed of a convex portion 4757 a that fits into a circumferential groove 4739 b that is a recess of the base fixing portion 4739 of the cylinder 4073 . A plurality of projections 4757a (here, four projections) are provided on the inner peripheral surface of the end portion of the large-diameter cylindrical portion 4751 at intervals in the circumferential direction. The mouthpiece-side fixing portion is constituted by the outer peripheral surface of the small-diameter cylindrical portion 4753, and the mouthpiece 4077 is fixed by the mouthpiece-side fixing portion via an adhesive, for example.

(3-4) Base A description will be given with reference to FIGS. 14 and 15. FIG.
Base 4077 has the same structure as a base used for a conventional light bulb, and has a shell portion and an eyelet portion, and the eyelet portion is attached to the shell portion via an insulating portion.

3. Connection between LED Board and Power Supply Circuit Unit The power supply circuit unit 4005 has a pair of metal pins 4055a at the end of the circuit board 4053 on the LED module 4003 side. 4035a is inserted. As the metal pin 4055a passes through the through hole 4035a, the metal spring piece 4035b is elastically deformed while maintaining contact with the metal pin 4055a. This ensures electrical connection between the LED board 4033 and the circuit board 4053 .
In this way, the electrical connection between the LED module 4003 and the power supply circuit unit 4005 can be easily achieved by simply inserting the metal pin 4055a into the through hole 4035a of the LED substrate 4033. FIG.

4. Fixing of Power Supply Circuit Unit and LED Module Mainly referring to FIG. 14, description will be made.
When mounting the power supply circuit unit 4005, the side of the circuit board 4053 on which the chipped portion 4053a exists is set to the tapered cylindrical portion 4734 side of the cylindrical body 4073, and the edge of the projecting portion 4053b of the circuit board 4053 on the chipped portion 4053a side is a groove. Circuit board 4053 is inserted into barrel 4073 until it abuts the end of 4735a.
The LED board 4033 is placed on the connecting portion 4737b of the rib 4737 of the cylindrical body 4073 so that the through hole 4035a of the LED module 4003 fits into the metal pin 4055a of the circuit board 4053 inserted into the groove 4735a. In this state, the threaded portion of the threaded body 4004 is inserted through the through hole 4033a of the LED board 4033 and screwed into the threaded hole 4736a of the cylindrical body 4073 . As a result, the power supply circuit unit 4005 is housed in the cylindrical body 4073 and the LED module 4003 is fixed to the cylindrical body 4073 . At the same time, electrical connection is also made between the power supply circuit unit 4005 and the LED module 4003 .

Since the LED module 4003 can be mounted while the LED board 4033 is in contact with the end face of the connecting portion 4737b, the screw body 4004 passing through the contact portion can be firmly fastened. This can prevent the screw body 4004 from loosening due to the restoring force of the metal spring piece 4035b.
The power supply circuit unit 4005 is attached to the extending portion 4737a of the rib 4737 of the cylindrical body 4073. As shown in FIG. Therefore, there is no risk of contact with the metal tube 4074 inside the tube 4073, and no special insulating measures are required. The LED module 4003 is fixed in contact with the surface of the connecting portion 4737b of the rib 4737 of the cylindrical body 4073 on the translucent cover 4071 side. Therefore, there is no risk of contact with the metal tube 4074 inside the tube 4073, and no special insulating measures are required.
In addition, since the power supply circuit unit 4005 is positioned between the pair of ribs 4737 (extended portions 4737a), and the projecting portion 4053b is inserted into the groove 4735a, the position of the circuit board 4053 with respect to the pair of ribs 4737 (extended portions 4737a) is It can prevent misalignment. As a result, the circuit board 4053 prevents the extended portion 4737a from separating from the metal cylinder 4074 due to long-term use.
The LED module 4003 is fixed to the cylinder 4073 so that the LED board 4033 comes close to or abuts on the edge of the circuit board 4053 when the circuit board 4053 is incorporated in the cylinder 4073 . Therefore, a new configuration for fixing the circuit board 4053 is not required.

5. Heat Dissipation During Lighting When the lighting device 4001 is turned on, heat is generated from the LED module 4003 and the power supply circuit unit 4005 . This heat is transferred to the fin portion 4732 of the cylinder 4073 via the metal cylinder 4074 and radiated.
The metal tube 4074 is arranged on the inner peripheral side of the straight tube portion 4733, and most of the inner peripheral surface of the metal tube 4074 faces the internal space except for the portion where the four ribs 4737 are present. As a result, the amount of heat transferred to the metal cylinder 4074 can be increased.

<Fourth Embodiment>
1. Overview A fourth embodiment will be described with reference to FIGS. 18 to 21. FIG.
The illumination device 5001 according to the fourth embodiment is also a so-called light bulb type lamp. Here, the same reference numerals are used for the same parts as those of the lighting device 4001 according to the third embodiment, and the description thereof will be omitted. In some cases, the same components are shown only in the drawings.
As shown in FIG. 19, lighting device 5001 accommodates LED module 4003 and power supply circuit unit 4005 in envelope 5007 . As shown in FIG. 18, the envelope 5007 is composed of a translucent cover 4071, a cylinder 5073, a mouthpiece holder 4075 and a mouthpiece 4077. Note that the cylinder 5073 contains the same components as in the third embodiment. A metal cylinder 4074 is provided in the .
The lighting device 5001 differs from the lighting device 4001 of the third embodiment in the cylindrical body 5073 . Therefore, the cylindrical body 5073 will be described below.

2. Cylinder The inner diameter of the cylinder 5073 is substantially constant except for the open end on the LED module 4003 side. The outer diameter of the cylindrical body 4073 increases along the central axis from the open end on the base 4077 side to the open end on the LED module 4003 side, and the overall appearance of the cylindrical body 5073 is tapered.
As shown in FIGS. 19 and 21, the cylindrical body 5073 includes a straight cylindrical portion 5731 having a constant inner diameter and an outer diameter, and a straight cylindrical portion 5731 extending from the end of the straight cylindrical portion 5731 on the side of the LED module 4003 in the central axis direction. A tapered tubular portion 5732 whose inner diameter and outer diameter increase as it moves away, an inner collar portion 5733 that protrudes in the central axis direction from the end of the straight tubular portion 5731 on the mouthpiece 4077 side, the straight tubular portion 5731 and the tapered tubular portion 5732. It has a fin portion 5734 provided on the outer periphery, a mounting portion 5735 for mounting the power supply circuit unit 4005 , and a fixing portion 5736 for fixing the LED module 4003 .

The tapered tubular portion 5732 is provided so as to extend from the outer peripheral surface of the end portion of the straight tubular portion 5731 while leaving the end surface of the straight tubular portion 5731 .
The fin portion 5734 is configured using a plurality of grooves 5737 provided at intervals in the circumferential direction, as in the third embodiment. In FIGS. 18, 20 and 21, the groove 5737 has an arrow at the leading end to distinguish it from the fin portion 5734, the straight tubular portion 5731, the tapered tubular portion 5732, and the like.
As shown in FIGS. 18, 20 and 21, the cylindrical body 5073 has a metal cylinder 4074 in close contact with the inner peripheral surface excluding the end on the LED module 4003 side, that is, the inner peripheral surface of the straight cylindrical portion 5731. Prepare for. Here, the end surface of the metal tube 4074 on the tapered tube portion 5732 side is exposed.

The tubular body 5073 has a plurality of extending portions 5738 extending from the inner collar portion 5733 toward the tapered tubular portion 5732 as shown in FIG. There are four extending portions 5738 here, and the four extending portions 5738 are provided at regular intervals in the circumferential direction. In other words, the tubular body 5073 has an extending portion 5738 extending in parallel with the inner peripheral surface of the straight tubular portion 5731 while being spaced radially inward from the inner peripheral surface of the straight tubular portion 5731 . The extension 5738 here extends parallel to the central axis.
A metal tube 4074 is incorporated between the extension portion 5738 and the straight tube portion 5731 . In the state where the metal tube 4074 is incorporated, the extending portion 5738 is provided along the inner peripheral surface of the metal tube 4074 from the inner collar portion 5733 of the tubular body 4073 as shown in FIG.
The mounting portion 5735 and the fixing portion 5736 are provided on the extending portion 5738 . The mounting portion 5735 here is provided in a pair of extending portions 5738 facing each other across the central axis of the tubular body 5073, as shown in FIG. As shown in FIG. 21, the fixing portion 5736 is provided on a pair of extending portions 5738 that sandwich the central axis and are not provided with the mounting portion 5735 .

The mounting portion 5735 is composed of a groove 5735a provided in the extending portion 5738, as shown in FIG. The groove 5735a extends halfway to the end of the extending portion 5738 on the base 4077 side. The length of the groove 5735a is slightly shorter than the length of the projecting portion 4053b of the circuit board 4053. As shown in FIG. The projecting portion 4053b of the circuit board 4053 is inserted into the groove 5735a. The fixing portion 5736 is configured by a screw hole 5736a provided in the end face of the extending portion 5738 on the tapered cylinder portion 5732 side.

The tubular body 5073 has a cover attachment portion 5739 for attaching the translucent cover 4071 to the end of the tapered tubular portion 5732 on the translucent cover 4071 side. The cover mounting portion 5739 is formed by a stepped portion 5739a recessed from the inner peripheral side.
The cylindrical body 5073 has a base fixing portion 5740 for fixing the base 4077 at the end on the base 4077 side. The base fixing portion 5740 is configured by a recess provided in the outer peripheral surface of the end portion of the straight tubular portion 5731 on the base 4077 side, and the recess here is configured by a circumferential groove 5740a extending in the circumferential direction.

Although each embodiment has been described above, the present invention is not limited to this embodiment, and may be modified as follows. Also, the embodiment may be combined with a modified example, or a combination of modified examples.
Further, examples not described in the embodiments and modifications, and design changes within the scope of the invention are also included in the present invention.

<Modification>
1. Base Member Although the base members 2 and 202 according to the first and second embodiments are made of metal, they may be made of a resin material like the cylindrical body 4073 of the third embodiment. In this case, it becomes easier to ensure insulation from the LED boards 31 and 2033 and the circuit boards 41 and 2043 .
The base member may have any structure as long as it has a structure that supports the part where the board with the metal spring pieces is fixed by the fasteners. may have
For example, the base member may be made of a thin metal plate as in the first embodiment, or it may be made of metal and have a thick portion (the base portion 4021) as in the second embodiment. Alternatively, it may be made of a cylindrical resin material as in the third embodiment.
Also, the base member may be made of two or more materials of a metal material and a resin material. For example, as in the third embodiment, a cylinder 4073 integrally provided with a metal cylinder 4074 may be used as the base member, or a resin material (for example, insulating resin) may be used for the base member of the first embodiment. ) may be used as the base member.
The base member may have a structure in which it contacts the LED substrate via an insulating sheet or a heat sheet.

2. Conductors and Conductive Spring Pieces (1) Conductors In the embodiments, metal pins 45, 2045a, and 4055a with circular or square cross sections are used as the conductors. (for example, a tapered shape) may be used, a metal plate having a rectangular cross section may be used, or a metal screw (including a tapping screw) may be used. good.

(2) Conductive spring piece The conductive spring piece closes the through-hole of the substrate in which the conductive spring piece is provided. The shape, size, and number are not particularly limited as long as the structure maintains contact between the electrodes and allows current to flow. However, in the case of a structure in which the conductor is sandwiched from both sides, it is possible to prevent the conductor from coming off. Both sides here are directions parallel to the surface of the substrate and perpendicular to the insertion direction of the conductors.
The amount of the conductive spring piece that closes the through hole is sufficient as long as the conductive spring piece can reliably contact the conductor when the conductor passes through the through hole, and it is not necessary to block the entire through hole. It should be noted that the term "closed" as used herein refers to a state when viewed from the leading end side in the insertion direction of the through-hole of the conductor, not a state viewed from a direction orthogonal to the insertion direction.

(3) Substrate In the embodiment, the LED substrates 31, 2033, and 4033 were provided with the conductive spring pieces (metallic spring pieces) 35, 2035, and 4035b. It may be provided on the substrate.
In the embodiment, the conductive spring pieces (metal spring pieces) 35, 2035, 4035b are provided on the mounting surfaces of the LED elements 33, 2031, 4031 on the LED substrates 31, 2033, 4033. In the case of the embodiment, a conductive spring piece may be provided on the surface of the LED substrate opposite to the surface on which the LED elements are mounted.

3. Fasteners In the first and third embodiments, the screw bodies 374 and 4004 were used to fix the LED substrates 31 and 4033, but rivets, for example, may be used. By fastening the fasteners, the LED substrates 31, 2033, 4033 including the conductive spring pieces (metal spring pieces) 35, 2035, 4035b are fixed so as to be pressed against the base member. From this point of view, it suffices if the substrate can be fixed to the base member in a pressed state.

Reference Signs List 1 illumination device 2 base member 3 LED module 4 power supply circuit unit 31 LED substrate 31a through hole 33 LED element 35 metal spring piece (conductive spring piece)
37 screw body (fastener)
41 circuit board 45 metal pin (conductor)

Claims (4)

an LED module in which an LED element is mounted on an LED substrate;
a power supply circuit unit having a plurality of circuit components mounted on a circuit board and supplying power to the LED elements;
a base member on which the LED board is arranged on the front side and the circuit board is arranged on the back side;
a plurality of conductors provided on one of the LED board and the circuit board for electrically connecting the LED board and the circuit board;
a first through hole provided in the other of the LED board or the circuit board and through which the conductor is inserted;
and a conductive spring piece provided on the other of the LED board and the circuit board, closing the first through hole, and elastically deforming as the conductor passes through the first through hole. hand,
a second through-hole for the conductor to pass through is provided in the base member;
The LED board and the circuit board are in a vertical state and partly overlaps in the front and back direction,
the conductor is erected so as to pass through the first through hole from a portion overlapping the circuit board in the front and back direction;
By bringing the LED board and the circuit board close to each other, the plurality of conductors penetrate through the first through hole and the second through hole and are electrically connected to the conductive spring piece. The lighting device according to claim 1, further comprising an insulating box that accommodates at least part of the conductor and the circuit board in parallel with the front-back direction. The lighting device according to claim 2, further comprising a housing that accommodates the insulating box inserted from the front side in a state parallel to the front-back direction. The base member is
Having a plurality of heat radiation fins extending to the back side in the peripheral portion of the base member excluding the central portion,
The second through hole is provided in the central portion,
The lighting device according to claim 2 or 3, wherein the insulating box is provided in the central portion so as to be surrounded by the plurality of heat radiation fins.

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