JP2023082078A - Luminaire - Google Patents

Abstract

To provide a luminaire which has a structure capable of achieving miniaturization and reduction in weight.SOLUTION: A luminaire 1 includes: an LED module 10 for radiating light; a light source fixing part 40 having a first surface 411 on which the LED module 10 is mounted and a second surface which is the surface on the opposite side from the first surface 411; a heat radiation part 50 mounted on the second surface, and for radiating heat generated in the LED module 10; a connection part 70 which is erected on the second surface side, and in which the length of a connection part bottom plate 72 connected to the light source fixing part 40 in a first direction which is the direction in parallel with the first surface 411 is longer than the length of a connection part top plate 73; and a power supply device 60 arranged at the position opposing to the second surface, and supported by the connection part 70. The heat radiation part 50 is arranged between the second surface and the power supply device 60, and formed in a cylindrical shape.SELECTED DRAWING: Figure 3

Description

The present invention relates to lighting devices.

2. Description of the Related Art Conventionally, as disclosed in Patent Document 1, there is a lighting device that is installed in buildings with high ceilings such as factories and gymnasiums to illuminate an irradiation space from above.

The lighting device of Patent Document 1 includes a light source unit having an LED (Light Emitting Diode) module, a power supply unit that supplies power to the light source unit, a heat radiating section that dissipates heat from the light source unit (corresponding to the heat radiating member of Patent Document 1), a holding member that holds the light source unit. The holding member has a top plate, a bottom plate, and a connection portion (corresponding to the support portion of Patent Document 1), and the connection portion has a pair of side plates and a pair of connection plates. The pair of side plates has a first slant piece, a second slant piece, and a support piece, and supports the space surrounded by the top plate and the bottom plate so as to surround the space from the sides. A pair of connecting plates connects a pair of side plates.

Further, in the lighting device of Patent Literature 1, the side plate is formed with a ventilation hole between the first inclined piece or the second inclined piece and the supporting piece. The heat radiation part is exposed to the outside through the ventilation hole.

JP 2018-77956 A

The lighting device of Patent Document 1 has a structure that makes it difficult to further reduce the size and weight.

In particular, in the case of reducing the width in the front-rear direction of the lighting device of Patent Document 1 to reduce the size, it is preferable to shorten the width in the front-rear direction of the first inclined piece, the second inclined piece, and the support piece. Since it is easier to shorten the width in the front-rear direction, the width in the front-rear direction of the vent is shortened to achieve miniaturization. Therefore, when miniaturization is achieved by shortening the width in the front-rear direction, the width in the front-rear direction of the first slanted piece, the second slanted piece, and the support piece, which cannot allow the inflow and outflow of air, is not shortened. The width in the front-rear direction of the vent that allows the inflow and outflow of air is shortened. Therefore, when miniaturization is attempted by shortening the width in the front-rear direction, there is a possibility that the amount of inflow and outflow of air will decrease and sufficient heat dissipation performance will not be obtained.

The reason why it is easier to shorten the width of the vent in the longitudinal direction than to shorten the width of the first inclined piece, the second inclined piece, and the support piece is that the first inclined piece and the This is because if the widths of the second inclined piece and the supporting piece in the front-rear direction are reduced, the strength of the lighting device is reduced, but the strength of the lighting device is not reduced even if the width of the vent in the front-rear direction is reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting device having a structure that enables further miniaturization and weight reduction.

A lighting device according to an aspect of the present invention includes a light source that emits light, a light source fixing portion that has a first surface on which the light source is attached, and a second surface that is opposite to the first surface, a heat radiating part attached to the second surface for dissipating heat generated by the light source; and a power supply device arranged at a position facing the second surface and supported by the connecting part, wherein the heat radiating part is , is disposed between the second surface and the power supply and is formed into a cylindrical shape.

The illuminating device of the present invention has a structure that enables further miniaturization and weight reduction.

It is the perspective view which looked at the illuminating device which concerns on embodiment from upper direction. It is the perspective view seen from the downward direction of the illuminating device which concerns on embodiment. 1 is an exploded perspective view of a lighting device according to an embodiment; FIG. 1 is a front view of a lighting device according to an embodiment; FIG. It is a rear view of the illuminating device which concerns on embodiment. It is a right view of the illuminating device which concerns on embodiment. It is a left view of the illuminating device which concerns on embodiment. 1 is a top view of a lighting device according to an embodiment; FIG. It is a bottom view of the illuminating device which concerns on embodiment. It is the perspective view which looked at the light source fixing|fixed part and thermal radiation part which concern on embodiment from upper direction. It is a top view of the light source fixing|fixed part and thermal radiation part which concern on embodiment. FIG. 11 is a cross-sectional view showing the AA cross section in FIG. 10 of the heat radiating portion according to the embodiment; FIG. 4 is a development view of a heat radiating section according to the embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail. In the drawings, the same or corresponding parts are denoted by the same reference numerals. Also, in the drawings, the size relationship of each component may differ from the actual size. The embodiment is an example of the present invention, and the present invention is not limited to the configuration of the embodiment, and various modifications are possible without departing from the technical idea of the present invention. .

FIG. 1 is a perspective view of a lighting device according to an embodiment as viewed from above. FIG. 2 is a bottom perspective view of the lighting device according to the embodiment. FIG. 3 is an exploded perspective view of the lighting device according to the embodiment. FIG. 4 is a front view of the lighting device according to the embodiment. FIG. 5 is a rear view of the lighting device according to the embodiment. FIG. 6 is a right side view of the lighting device according to the embodiment. FIG. 7 is a left side view of the lighting device according to the embodiment. FIG. 8 is a top view of the lighting device according to the embodiment. FIG. 9 is a bottom view of the lighting device according to the embodiment. In the embodiments, it is assumed that the illumination device 1 is installed on an installation object such as a ceiling of a building (not shown). However, the object to be installed is not limited to this, and may be, for example, a street light. In addition, although the vertical, horizontal, and front/rear directions of the lighting device 1 are defined in FIG. nothing to do.

The illumination device 1 includes an LED module 10 corresponding to a light source, a lens 20, a cover 30, a light source fixing portion 40, a heat dissipation portion 50, a power supply device 60, a connecting portion 70, an arm 80, and a fall prevention member. 90.

As shown in FIG. 3 , the LED module 10 has a plurality of LEDs 11 and a mounting board 12 . For example, a surface-mounted white LED or the like is used as the LED 11 . The mounting board 12 is a flat board. The LEDs 11 are arranged and mounted on a mounting surface 121 that is one surface (the downward surface in FIG. 1) of the mounting substrate 12 . Further, the mounting board 12 is provided with wiring conductors (not shown) for electrically connecting the electrodes of the plurality of LEDs 11 . A terminal (not shown) for power supply is provided on the mounting substrate 12, and one end of wiring (not shown) electrically connecting the LED module 10 and the power supply device 60 is attached.

The lens 20 is an optical element that diverges or converges light emitted from the LED module 10 . As shown in FIG. 3, the lens 20 is arranged to face the mounting surface 121 of the mounting substrate 12 .

The cover 30 is a member that covers the LED module 10 and the lens 20 . The cover 30 is made of translucent synthetic resin or the like, and is shaped like a box having an opening on the top. As shown in FIG. 3 , the cover 30 is attached to the light source fixing portion 40 so as to cover the LED module 10 and the lens 20 . A cover through hole 31 is formed in the cover 30 .

FIG. 10 is a perspective view of the light source fixing portion and the heat radiating portion according to the embodiment, viewed from above. FIG. 11 is a top view of a light source fixing portion and a heat radiating portion according to the embodiment; The light source fixing portion 40 has a plate portion 41 and a projecting portion 42 .

The plate portion 41 has a plate-like shape. Further, the plate portion 41 has a thickness as shown in a projection view (corresponding to the front view of FIG. 4) projected on a plane perpendicular to the front-rear direction. The thickness direction of the plate portion 41 corresponds to the vertical direction in FIG. The thickness direction indicates the thickness direction of a plate-like member. The plate portion 41 has a lower surface perpendicular to the thickness direction of the plate portion 41 and an upper surface opposite to the lower surface. Here, the lower surface of the plate portion 41 is called a first surface 411 (see FIG. 3), and the upper surface of the plate portion 41 is called a second surface 412 .

The LED module 10 is attached to the first surface 411 so that the surface opposite to the mounting surface 121 faces the first surface 411 (see FIG. 3). The LED module 10 is attached so that at least the heat generated by the LED 11 is transferred to the light source fixing portion 40, and is attached by screws or a thermally conductive adhesive, for example.

A plate portion through hole (not shown) is formed through the plate portion 41 in the thickness direction, and a bush 43 is inserted into the plate portion through hole. Wiring for electrically connecting the LED module 10 and the power supply device 60 is inserted into the bush 43 . Further, the first surface 411 is formed with a light source fixing portion side attachment hole 44 for attaching the cover 30 at a position corresponding to the cover through hole 31 of the cover 30 . The cover 30 is attached to the first surface 411 by inserting screws into the cover through holes 31 and the light source fixing portion side attachment holes 44 . Further, the second surface 412 is provided with a plurality of bosses 45 for mounting the heat radiating section 50 thereon.

The protruding portions 42 are portions that protrude toward the second surface 412 from the ends of the plate portion 41 in the direction perpendicular to the thickness direction (corresponding to the front-back direction and the left-right direction in FIG. 1). The light source fixing portion 40 is made of a single metal plate, and the projecting portion 42 is formed by bending the plate portion 41 toward the second surface 412 side.

FIG. 12 is a cross-sectional view showing the AA cross section in FIG. 10 of the heat radiating portion according to the embodiment. The heat radiating portion 50 is formed in a cylindrical shape from a metal plate that is bent at a plurality of bending portions 51 to form a wave shape. The heat radiating portion 50 has a lower end portion 52 that is a portion perpendicular to the axial direction of the cylindrical shape, and an upper end portion 53 that is a portion perpendicular to the axial direction of the cylindrical shape and is a portion opposite to the lower end portion 52 . and a side portion 54 that is a portion parallel to the axial direction of the cylindrical shape. In addition, in the embodiment, the lower end portion 52, the upper end portion 53 and the side portions 54 are each flat.

In the present invention, the “portion perpendicular to the axial direction of the cylindrical shape” does not have to be strictly perpendicular to the axial direction of the cylindrical shape. A portion with a smaller angle with respect to a plane perpendicular to the axial direction of the cylindrical shape is included in the "portion perpendicular to the axial direction of the cylindrical shape" in the present invention. Similarly, the “portion parallel to the axial direction of the cylindrical shape” in the present invention does not have to be strictly parallel to the axial direction of the cylindrical shape, and the angle with respect to the plane parallel to the axial direction of the cylindrical shape A portion having a smaller angle to a plane parallel to the axial direction of the cylindrical shape than the angle to the plane perpendicular to the direction is included in the "portion parallel to the axial direction of the cylindrical shape" in the present invention.

Further, as shown in FIG. 12, the lower end portion 52 and the upper end portion 53 are alternately arranged along the circumferential direction of the cylindrical shape with two bent portions 51 and side portions 54 interposed therebetween. In the following description, when the bent portion 51 is separately described, the bent portion 51 located between the lower end portion 52 and the side portion 54 is referred to as a first bent portion 51a. 54 is called a second bent portion 51b. Therefore, along the circumferential direction of the cylindrical shape, the heat radiating portion 50 has an upper end portion 53, a second bent portion 51b, a side portion 54, a first bent portion 51a, a lower end portion 52, a first bent portion 51a, and a side portion. 54, the second bent portion 51b, and the upper end portion 53 are arranged in this order.

Further, the heat radiating portion 50 is projected on a plane perpendicular to the axial direction, as shown in a projection view (corresponding to the top view of FIG. 11) projected on a plane perpendicular to the axial direction of the cylindrical shape. The projected area of the lower end portion 52 is wider than the projected area of the upper end portion 53 projected onto a plane perpendicular to the axial direction. Furthermore, the heat radiating portion 50 has a shape in which the length of the outer periphery of the lower end portion 52 (corresponding to the dotted line in FIG. 11) is longer than the length of the outer periphery of the upper end portion 53 (corresponding to the two-dot chain line in FIG. 11).

A plurality of boss holes (not shown) are formed in the lower end portion 52 of the heat radiating portion 50 at positions corresponding to the plurality of bosses 45 provided on the second surface 412 of the plate portion 41 of the light source fixing portion 40 . there is The heat dissipation portion 50 is attached to the second surface 412 of the light source fixing portion 40 by crimping the boss 45 while the boss 45 is inserted into the boss hole. The term "crimped" as used herein means fixing two members to each other by plastically deforming such as by striking or bending a joint portion of metal. Heat is transmitted to the heat radiation portion 50 via the crimped portion of the light source fixing portion 40 . Therefore, the heat generated by the LED 11 is transferred to the heat radiating portion 50 through the light source fixing portion 40 and radiated from the heat radiating portion 50 to the atmosphere.

As shown in FIG. 3 , the power supply device 60 has a power supply circuit (not shown), a case main body 61 , a case lid 62 and a terminal block 63 . Also, the power supply device 60 is provided at a position facing the second surface 412 of the plate portion 41 of the light source fixing portion 40 . Note that the case main body 61 corresponds to the beam portion of the present invention.

The power supply circuit is a circuit for supplying power to the LED module 10 . The power supply circuit has a power conversion circuit that converts power supplied from an external source such as a commercial power supply into a DC current required for lighting the LED module 10, and a control circuit that controls the power conversion circuit. The power conversion circuit includes, for example, a full-wave rectifier, a boost chopper circuit, a step-down chopper circuit, and the like. The control circuit acquires operation information related to dimming input from an operation terminal or the like that accepts user's operations, and controls the power conversion circuit according to the acquired operation information, thereby dimming the LED module 10 . Also, the other end of the wiring that electrically connects the LED module 10 and the power supply device 60 is attached to the power supply circuit.

The case main body 61 includes a rectangular case bottom plate 611 having a bottom surface facing the second surface 412 and a top surface opposite to the bottom surface, and the top surface of the case bottom plate 611 extending in the same direction (see FIG. 1). It has a box-like shape with four case main body side plates 612 protruding upward) and an opening formed at the top. The case main body 61 is made of a single metal plate, and the case main body side plates 612 are formed by bending up the portions connected to the sides of the case bottom plate 611 . A side plate through-hole (not shown) is formed in at least one portion of the case main body side plate 612 , and wiring for electrically connecting the power supply circuit and the terminal block 63 is inserted into the side plate through-hole. The power supply circuit is attached to the top surface of the case bottom plate 611 . For this reason, the lower side of the power supply circuit is covered with a case bottom plate 611, and the power supply circuit is covered with case main body side plates 612 in the four directions of front, back, left, and right. A boss 613 for attaching the connecting portion 70 is provided on the bottom surface of the case bottom plate 611 .

The case cover 62 includes a rectangular case top plate 621 having a bottom surface facing the top surface of the case bottom plate 611 and a top surface opposite to the bottom surface. Four case lid side plates 622 protrude downward in FIG. 1), and eaves 623 protrude vertically from one side of the case top plate 621 (backward side in FIG. 1) to the case lid side plates 622. are doing. The case lid 62 is made of a single metal plate, and the side plate 622 of the case lid is formed by bending a portion connected to the side of the case top plate 621 . The case lid 62 is attached so as to cover the opening of the case main body 61 , and the upper side of the power supply circuit is covered with a case top plate 621 .

The terminal block 63 is provided at a position covered by the eaves portion 623 when viewed from the second surface 412 side of the plate portion 41 (corresponding to the top view of FIG. 8). The terminal block 63 is electrically connected to the power supply circuit via wiring. Also, the terminal block 63 is connected to a power line to which power is supplied from the outside, a signal line to which operation information is transmitted from an operation terminal, or the like.

3 and 8, when viewed from the second surface 412 side of the plate portion 41 (corresponding to the top view of FIG. 8), the second surface 412 of the plate portion 41 and the heat radiating portion 50 The power supply device 60 is configured to be smaller than the plate portion 41 so that a portion of the is exposed.

The connecting portion 70 is a member that connects the light source fixing portion 40 and the power supply device 60 . The connecting portions 70 are a pair of plate-like members arranged to face each other. The connection part 70 connects the light source fixing part 40 and the power supply device 60 so as to surround the space surrounded by the light source fixing part 40 and the power supply device 60 from the side. Therefore, the connecting portion 70 is provided so as to stand on the second surface 412 side from the light source fixing portion 40 .

The connecting portion 70 has a connecting portion side plate 71 , a connecting portion bottom plate 72 projecting from the connecting portion side plate 71 , and a connecting portion top plate 73 projecting from the connecting portion side plate in the same direction as the connecting portion bottom plate 72 . The connecting portion 70 is made of a single metal plate, and the connecting portion bottom plate 72 and the connecting portion top plate 73 are formed by bending from the connecting portion side plate 71 . 4 and 5, the connecting portion 70 is perpendicular to the thickness direction of the connecting portion side plate 71 (horizontal direction in FIG. 1), and is perpendicular to the thickness direction of the connecting portion bottom plate 72 and the connecting portion top plate 73 (see FIG. 1). When viewed from a direction (the front-rear direction in FIG. 1) perpendicular to the vertical direction in FIG. Here, the direction perpendicular to the thickness direction of the connecting portion side plate 71 and the thickness direction of the connecting portion bottom plate 72 and the connecting portion top plate 73 is hereinafter referred to as a first direction.

The connecting portion side plate 71 is arranged so that when viewed from the thickness direction (horizontal direction in FIG. 1) of the connecting portion side plate 71 (see FIG. 6 or 7), the length of the upper end side is shorter than the length of the lower end side. It has a trapezoidal shape. In addition, connecting portion side plate mounting holes 711 for mounting the arm 80 are formed in the connecting portion side plate 71 so as to be aligned in the vertical direction.

6 and 7, when viewed from a direction perpendicular to the first direction and parallel to the first surface 411 (horizontal direction in FIG. 1), the connecting portion side plate 71 The heat radiating portion 50 protrudes from the connecting portion side plate end portion 712 which is the end portion in the first direction of the . Here, the direction perpendicular to the first direction and parallel to the first surface 411 is hereinafter referred to as the second direction.

Further, as shown in FIG. 4, the distance between the heat radiating portion 50 and the connecting portion side plate 71 is longer on the connecting portion top plate 73 side than on the connecting portion bottom plate 72 side. The connecting portion side plate mounting hole 711 on the connecting portion bottom plate 72 side is provided at the same height as part of the heat radiating portion 50 .

In addition, the connecting portion side plate 71 has the center of the upper end side in the first direction and the center of the lower end side in the first direction parallel to the thickness direction of the connecting portion bottom plate 72 and the connecting portion top plate 73 . should be in a straight line. Moreover, it is desirable that the connecting portion side plate attachment hole 711 is formed on a straight line passing through the center of the upper end side in the first direction and the center of the lower end side in the first direction.

Moreover, it is desirable that the connecting portion side plate end portions 712 are arcuate so that the distance between the side end portions becomes closer from the lower end side toward the upper end side.

The connecting portion bottom plate 72 is the lower end portion of the connecting portion side plate 71 and is formed to protrude from the connecting portion side plate 71 in a direction (horizontal direction in FIG. 1) approaching the opposing connecting portion 70 . A connecting portion bottom plate through hole 721 is formed in the connecting portion bottom plate 72 at a position corresponding to the cover through hole 31 and the light source fixing portion side mounting hole 44 . A fixing member 74 such as a screw or a rivet is inserted into the connecting portion bottom plate through hole 721, the cover through hole 31, and the light source fixing portion side mounting hole 44 to connect the cover 30, the light source fixing portion 40, and the connecting portion 70. . When viewed from the side of the first surface 411 (corresponding to the bottom view of FIG. 9), the connecting portion bottom plate 72 is attached so as to cover part of the first surface 411 and part of the cover 30 .

Further, as shown in FIGS. 3 and 8, at least a plurality of connecting portion bottom plate through holes 721 are formed, and when viewed from the second surface 412 side of the plate portion 41 (corresponding to the top view of FIG. 8), the The connecting portion top plate 73, the connecting portion side plate mounting hole 711, and the power supply device 60 are arranged between one connecting portion bottom plate through-hole 721 and another connecting portion bottom plate through-hole 721 in one direction. It is desirable that

The connecting portion top plate 73 is an upper end portion of the connecting portion side plate 71 and is formed so as to protrude from the connecting portion side plate 71 in a direction toward the opposing connecting portion 70 (horizontal direction in FIG. 1). A connecting portion top plate mounting hole 731 is formed in the connecting portion top plate 73 at a position corresponding to the boss 613 provided on the case bottom plate 611 of the case main body 61 . The power supply device 60 and the connecting portion 70 are connected by crimping the boss 613 while being inserted into the connecting portion top plate mounting hole 731 .

Moreover, as shown in FIG. 3, it is desirable that the length of the connecting portion bottom plate 72 in the first direction is longer than the length of the connecting portion top plate 73 in the first direction.

Moreover, it is desirable that the connecting portion top plate attachment hole 731 is positioned at the center of the connecting portion bottom plate 72 in the first direction.

Moreover, as shown in FIGS. 4 and 5, it is desirable that the power supply device 60 is attached to the connecting portion 70 so that the case main body side plate 612 is positioned above the connecting portion top plate 73 .

As shown in FIG. 3 , the arm 80 has an arm base 81 and two arm portions 82 . The arm 80 is formed into a substantially U shape by bending a long metal plate in the same direction (downward in FIG. 1) at both ends in the longitudinal direction.

In a projection view projected onto a plane perpendicular to the thickness direction of the arm base 81 (corresponding to the top view of FIG. 8), the arm base 81 has a second arm portion 82 side of the center in the longitudinal direction. One arm base through-hole 811 and a second arm base through-hole 812 are formed on the other arm arm 82 side of the center in the longitudinal direction. Suspension bolts are inserted into the first arm base through-hole 811 and the second arm base through-hole 812, and the arm base 81 is fixed to the installation object by tightening the arm base 81 with a nut.

Moreover, the first arm base through hole 811 preferably has a shape in which an elongated hole extending in the longitudinal direction of the arm 80 and a circular hole are combined. Further, the first arm base through-hole 811 is a circular hole formed at the end of the long hole on the other arm arm portion 82 side, and the radius of the circular hole is longer than the diameter of the long hole in the widthwise direction. is desirable. The second arm base through-hole 812 is desirably an elongated hole extending in the lateral direction of the arm 80 .

A first arm through-hole 821 and a second arm through-hole 822 are formed in the arm 82 at positions corresponding to the connecting portion side plate mounting holes 711 of the connecting portion side plate 71 . The first arm through-hole 821 is a circular hole, and the second arm through-hole 822 is an arc-shaped elongated hole. By inserting an arm connecting member 83 such as a screw or a rivet into the connecting portion side plate mounting hole 711 and the first arm arm portion through-hole 821 or the second arm arm portion through-hole 822 and fastening, the arm 80 is connected. It is connected with the part 70 . Further, since the second arm through-hole 822 is arc-shaped, the LED module 10 can be rotated to a predetermined angle even after the lighting device 1 is installed on the installation object.

In addition, the connecting portion side plate mounting hole 711 on the connecting portion bottom plate 72 side and the first arm arm portion through hole 821 are provided at the same height position as part of the heat radiating portion 50 , and a portion of the arm connecting member 83 is provided. is positioned between the connecting portion side plate 71 and the heat radiating portion 50 .

Moreover, as shown in FIGS. 4 and 5, a gap is formed between the arm portion 82 and the power supply device 60 .

The fall prevention member 90 has a wire 91, an installation object side metal fitting 92 provided at one end of the wire 91, and a lighting device side metal fitting 93 provided at the other end of the wire 91. there is The installation object side metal fitting 92 is fixed to the installation object, and the lighting device side metal fitting 93 is fixed to the connection portion side plate 71 of the connection portion 70 . The fall prevention member 90 prevents the lighting device 1 from falling.

FIG. 13 is an exploded view of the heat radiating portion according to the embodiment. Next, a method for manufacturing the heat radiating portion 50 will be described with reference to FIG. 13 .

First, as a first step, a plurality of cutouts 55 are formed in one end of a long metal plate in the width direction. The notch 55 is intermittently provided along the longitudinal direction of the metal plate. For example, in the first step, the notch 55 is formed by punching.

After completion of the first step, the metal plate is formed into a wavy shape as the second step. Specifically, each portion where the notch 55 is not formed in the width direction is bent about 90 degrees in one direction perpendicular to the surface of the metal plate along two bending lines 56, The metal plate is bent about 90 degrees in the other direction perpendicular to the surface of the metal plate along two bending lines 56 at each portion where the notch 55 is formed, and the metal plate is formed into a wavy shape. The bending line 56 is parallel to the transverse direction of the metal plate. In the following description, when the bend lines 56 are separately described, the bend lines 56 (corresponding to the two-dot chain line in FIG. 13) located in a portion where the cutout portion 55 is not formed in the lateral direction are the first. One bending line 56a is called, and the bending line 56 (corresponding to the dotted line in FIG. 13) located at the portion where the notch 55 is formed in the lateral direction is called the second bending line 56b.

Here, the portion bent along the first bend line 56a becomes the first bent portion 51a, and the portion bent along the second bend line 56b becomes the second bent portion 51b. In addition, the portion between the first bending lines 56a becomes the lower end portion 52, the portion between the second bending lines 56b becomes the upper end portion 53, and the first bending line 56a and the second bending line 56b The portion in between becomes the side portion 54 .

After completing the second step, the metal plate is formed into a cylindrical shape as the third step. Specifically, the metal plate is bent into a cylindrical shape in which the first bend line 56a and the second bend line 56b are along the direction perpendicular to the axial direction, and the metal plate is bent in one longitudinal direction. The end portion 57a and the other end portion 57b are joined by means such as welding to form the metal plate into a cylindrical shape. Further, in the third step, it is preferable to form a cylindrical shape so that the cutout portion 55 is located on the centrifugal direction side of the cylindrical shape.

As the fourth step, there is a step of forming a plurality of boss holes. may be carried out simultaneously with any one of the steps of For example, when forming the notch 55 in the first step, a plurality of boss holes may be formed at the same time.

As described above, the illumination device 1 according to the embodiment has, as a first aspect, a light source (corresponding to the LED module 10) that emits light, and a first surface 411 to which the light source (corresponding to the LED module 10) is attached. A light source fixing portion 40 having a second surface 412 opposite to the first surface 411, and a heat dissipation device attached to the second surface 412 that dissipates heat generated by the light source (corresponding to the LED module 10). 50, and one end portion that stands on the side of the second surface 412 and is connected to the light source fixing portion 40 in the first direction parallel to the first surface 411 (corresponding to the bottom plate 72 of the connecting portion). a connecting portion 70 whose length is longer than the length of the other end (corresponding to the connecting portion top plate 73), and a direction perpendicular to the first direction and parallel to the first surface When viewed from the second direction, the heat radiating portion 50 protrudes from the end portion of the connecting portion 70 in the first direction. In the configuration of the first aspect, when viewed from a second direction that is perpendicular to the first direction and parallel to the first plane, the end of the connecting portion 70 in the first direction Since the heat radiating portion 50 protrudes from the portion (corresponding to the connecting portion side plate end portion 711 ), the connecting portion 70 does not block the inflow and outflow of air to the projecting heat radiating portion 50 . Therefore, even when the width in the front-rear direction is shortened for miniaturization, the decrease in the amount of inflow and outflow of air is suppressed as compared with the lighting device of Patent Document 1. Therefore, compared with the structure of the lighting device of Patent Document 1, the lighting device having the configuration of the first aspect has a structure capable of further miniaturization and weight reduction.

Furthermore, as a second aspect, the illumination device 1 according to the embodiment is provided with a plurality of connecting portions between the connecting portion 70 and the light source fixing portion 40 in the configuration of the first aspect. , in the first direction, the other end (connecting portion (corresponding to the top plate 73) is added. In the configuration of the second aspect, since a plurality of connecting portions are provided between the connecting portion 70 and the light source fixing portion 40, even when an external force such as vibration is applied to the lighting device, the stress is distributed to each connecting portion. In addition, the length of one end of the connecting portion connected to the light source fixing portion in the first direction parallel to the first surface is longer than the length of the other end, and When viewed in the first direction, the other end portion is positioned between the connecting portion between one connecting portion and the light source fixing portion and the connecting portion between the other connecting portion and the light source fixing portion. Even if an external force is applied to the portion, the stress is distributed to a plurality of connecting portions without concentrating on the connecting portion between the one connecting portion 70 and the light source fixing portion 40 . Therefore, compared to the structure of the illumination device of Patent Document 1, which has only one connecting portion between the connecting portion and the light source fixing portion (corresponding to the portion screwed by the screw 75 of Patent Document 1), The lighting device having the configuration of the second aspect has a structure that can achieve further miniaturization and weight reduction.

Furthermore, as a third aspect, the illumination device 1 according to the embodiment is configured such that the light source (the LED module 10 corresponds) is connected to the configuration of the first aspect or the second aspect by connecting the light source (corresponding to the LED module 10) to the installation object. and an arm 80 for installing on the second surface 412 side, in the first direction, the connecting portion between one connecting portion 70 and the light source fixing portion 40 and the other connecting portion 70 and the connecting portion of the light source fixing portion 40, the connecting portion of the connecting portion 70 and the arm 80 is positioned. In the configuration of the second aspect, when viewed from the second surface side, the connecting portion between one connecting portion and the light source fixing portion and the connecting portion between the other connecting portion and the light source fixing portion in the first direction. Since the connecting portion between the connecting portion and the arm is located between the connecting portions, even if an external force is applied to the arm, the stress will not be concentrated on the connecting portion between one connecting portion and the light source fixing portion, and the multiple connecting portions will not be affected. distributed. Therefore, compared with the structure of the lighting device of Patent Document 1, the lighting device having the configuration of the third aspect has a structure that can achieve further miniaturization and weight reduction.

Furthermore, as a fourth aspect, the illumination device 1 according to the embodiment is arranged at a position facing the second surface 412 in the configuration of any one aspect from the first aspect to the third aspect. The beam (corresponding to the case main body 61) is provided, and the beam and the other end of the connecting part (corresponding to the connecting part top plate 73) are connected, and when viewed from the second surface 412 side, In the first direction, a configuration is added in which beam portions are positioned between the connecting portion between one connecting portion 70 and the light source fixing portion 40 and the connecting portion between the other connecting portion 70 and the light source fixing portion 40. . In the configuration of the third aspect, the strength of the lighting device is improved due to the presence of the beams. In addition, in the configuration of the third aspect, when viewed from the second surface side, in the first direction, a connecting portion between a certain connecting portion and the light source fixing portion and a connecting portion between the other connecting portion and the light source fixing portion Since the beams are positioned between the beams, even if an external force is applied to the beams, the stress is not concentrated on the connection between one of the connecting parts and the light source fixing part, but is distributed to the multiple connecting parts. . Therefore, compared with the structure of the lighting device of Patent Document 1, the lighting device having the configuration of the fourth aspect has a structure capable of further miniaturization and weight reduction.

Furthermore, as a fifth aspect, the illumination device 1 according to the embodiment has the structure of the fourth aspect in which the beam portion (corresponding to the case body 61) has a bottom surface facing the second surface 412 and a bottom surface facing the second surface 412. It has a bottom plate (case bottom plate 611) having a top surface which is the opposite surface, and a side plate (case main body side plate 612) protruding from the top surface of the bottom plate (case main body side plate 612). When viewed, the other end of the connecting portion 70 (corresponding to the connecting portion top plate 73) is provided at a position overlapping the side plate (corresponding to the case main body side plate 612). In the configuration of the fifth aspect, since the other end of the connecting portion is provided at a position overlapping the side plate when viewed from the second surface side, the side plate increases the moment of inertia of the area of the lighting device. , the strength against torsional stress is improved.

Furthermore, as a sixth aspect, the illumination device 1 according to the embodiment includes a power supply circuit for supplying power to the light source (the LED module 10 corresponds) in the configuration of the fourth aspect or the fifth aspect, The part is a box-shaped case (corresponding to the case body 61 and the case cover 62) for housing the power supply circuit. In the configuration of the sixth aspect, the case that houses the power supply circuit also serves as the beam, so that the lighting device can be made lighter.

Furthermore, as a seventh aspect, the illumination device 1 according to the embodiment is attached to the second surface 412 in the configuration of any one aspect from the fourth aspect to the sixth aspect, and the light source (LED The module 10 is provided with a heat radiating portion 50 for radiating heat generated in the module 10 ), and when viewed from the second surface 412 side, the heat radiating portion is exposed from the beam portion. In the configuration of the seventh aspect, since the heat radiating portion is exposed from the beam portion, the heat transferred to the heat radiating portion can be efficiently radiated to the outside of the lighting device.

Furthermore, as an eighth aspect, the illumination device 1 according to the embodiment has the configuration of any one aspect from the first aspect to the seventh aspect, and the connecting portions 70 are arranged so as to face each other. They are a pair of plate-like members, and one end (corresponding to the connecting part bottom plate 72) and the other end (corresponding to the connecting part top plate 73) of the connecting part 70 are arranged in a direction approaching the opposing connecting part 70. It adds a protruding configuration. In the configuration of the eighth aspect, since one end of the connecting portion protrudes, the light source fixing plate can be placed on one end of the connecting portion, thereby facilitating assembly of the lighting device. can. Moreover, since the other end of the connecting portion protrudes, the beam can be placed on the other end of the connecting portion, which facilitates the assembly of the lighting device.

Also, a plurality of modifications of the embodiment will be described below. In the description of the modified examples, the above-described embodiment will be referred to as a basic example. Moreover, each modification may be appropriately combined with the basic example or with each modification.

Although the LED module 10 is used as the light source in the basic example, the present invention is not limited to this. For example, as a modification, other light-emitting elements such as organic electroluminescence elements may be used as the light source.

In the basic example, the lighting device 1 includes a power supply circuit, but the present invention is not limited to this. For example, as a modification, the lighting device 1 may not include a power supply circuit, and the light source (LED module) may be configured to receive power from a power supply circuit arranged elsewhere to light up. Moreover, in the case of the configuration of the modification, the case main body 61, the case cover 62, and the terminal block 63 may not be provided, that is, the configuration corresponding to the beam portion may not be provided. In addition, in the case of the configuration of the modified example, instead of the case body 61 and the case cover 62, a reinforcing member such as a flat plate or an L-shaped angle is arranged as a beam portion at a position facing the second surface 412. I don't mind. In particular, like an L-shaped angle, reinforcement of a shape having a bottom plate that has a bottom surface facing the second surface 412 and a top surface that is the surface opposite to the bottom surface, and a side plate that protrudes from the top surface of the bottom plate. When the member is used as a beam portion, it is desirable that the other end portion of the connecting portion 70 is provided at a position overlapping the side plate when viewed from the second surface 412 side as in the configuration of the fourth aspect. .

In the basic example, the heat radiating portion 50 is formed in a cylindrical shape by bending a plurality of bending portions 51 into a corrugated metal plate, but it is not limited to this. For example, as in Patent Document 1, the heat dissipation portion may be formed by attaching a plurality of heat dissipation plates formed into a substantially U shape by bending an aluminum plate, or the shape of an existing heat dissipation portion may be used. good. Moreover, when the heat sink is formed by attaching a plurality of heat sinks, the heat sink corresponds to the heat sink of the present invention. Therefore, even if some of the plurality of heat sinks protrude from the edge of the side plate of the connecting portion and some of the remaining heat sinks do not protrude from the edge of the side plate of the connecting portion, the heat sink is It corresponds to the state of protruding from the end in the first direction of.

1 illumination device 10 LED module 11 LED 12 mounting substrate 20 lens 30 cover 31 cover through hole 40 light source fixing portion 41 plate portion 42 protrusion 43 bush 44 light source fixing portion side mounting hole, 45 boss, 50 heat radiation part, 51 bending part, 51a first bending part, 51b second bending part, 52 lower end part, 53 upper end part, 54 side part, 55 notch part, 56 bending line, 56a first bending part Bending line 56b Second bending line 57 End 57a One end 57b The other end 60 Power supply device 61 Case main body 62 Case cover 63 Terminal block 70 Connecting portion 71 Connecting portion side plate, 72 connection bottom plate, 73 connection top plate, 80 arm, 81 arm base, 82 arm arm, 90 fall prevention member, 91 wire, 92 installation object side metal fitting, 93 lighting device side metal fitting, 121 mounting surface, 411 First surface 412 Second surface 611 Case bottom plate 612 Case body side plate 613 Boss 621 Case top plate 622 Case cover side plate 623 Overhead portion 711 Connecting portion side plate mounting hole 712 Connecting portion side plate end 721 connection bottom plate through hole 722 connection top plate mounting hole 811 first arm base through hole 812 second arm base through hole 821 first arm arm through hole 822 second Arm through-hole.

Claims (2)

a light source that emits light;
a light source fixing part having a first surface to which a light source is attached and a second surface opposite to the first surface;
a heat dissipation part attached to the second surface and dissipating heat generated by the light source;
The length of one end portion connected to the light source fixing portion is longer than the length of the other end portion in the first direction parallel to the first surface and standing on the second surface side. long joints and
a power supply device arranged at a position facing the second surface and supported by the connecting portion;
with
The lighting device, wherein the heat radiating section is arranged between the second surface and the power supply device and formed in a cylindrical shape. 2. The illumination device of claim 1, further comprising an arm formed in a U shape and rotatably attached to the connecting portion.

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