JP2019133810A - Light source unit and lighting fixture - Google Patents

Abstract

To provide a light source unit capable of suppressing generation of noise by reducing a contact area between a substrate and pressing pieces pressing the substrate: and to provide a lighting fixture having the light source unit.SOLUTION: A light source unit includes a light source, a substrate 50 on which the light source is mounted, and a metal mounting plate 6 to which the substrate 50 is mounted. The substrate 50 includes: a first surface 51 facing the mounting plate 6; and a second surface 52 which is a surface opposite to the first surface 51 and on which the light source is mounted. The mounting plate 6 has pressing pieces 7 projecting toward the substrate 50. The pressing pieces 7 each includes a contact part 72 projecting toward the second surface 52 and getting in contact with the second surface 52. A contact surface 720 to the second surface 52 of the contact part 72 is formed into a curved surface shape projecting toward the second surface.SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to a light source unit and a luminaire, and more particularly, to a light source unit including a substrate on which a light source is mounted and a metal mounting plate to which the substrate is attached, and a luminaire having the light source unit.

  Patent Literature 1 discloses a lighting fixture. This luminaire includes a substrate on which a plurality of light emitting diodes are mounted, and a base member formed of sheet metal. The base member has a main body portion on which the substrate is placed and a claw portion formed by cutting and raising a part of the main body portion. The claw portion is bent so as to slide on the substrate. Thereby, a board | substrate is pinched | interposed between a nail | claw part and a main-body part, and is attached to a base member.

Japanese Patent Laid-Open No. 2006-91979

  In the luminaire shown in Patent Document 1, it is preferable to reduce the contact area between the claw portion and the substrate in order to suppress the generation of sound due to friction between the claw portion and the substrate. The cause of the friction between the claw portion and the substrate is that the temperature of the base member and the substrate changes as the light emitting diode is switched on and off, and the difference in thermal expansion coefficient between the base member and the substrate at this time It is conceivable that the part is displaced with respect to the substrate.

  The present disclosure has been made in view of the above reasons, and an object of the present disclosure is to provide a light source unit and a lighting fixture that can suppress generation of sound by reducing a contact area between a substrate and a pressing piece that holds the substrate. And

  In order to achieve the above object, a light source unit according to an aspect of the present disclosure has the following configuration. The light source unit includes a light source, a substrate on which the light source is mounted, and a metal attachment plate to which the substrate is attached. The substrate has a first surface that faces the mounting plate, and a second surface that is opposite to the first surface and on which the light source is mounted. The mounting plate has a pressing piece protruding toward the substrate side. The pressing piece has a contact portion that protrudes toward the second surface and contacts the second surface. A contact surface of the contact portion with the second surface is formed in a curved shape protruding toward the second surface.

  Moreover, in order to achieve the said objective, the lighting fixture which concerns on 1 aspect of this indication has the said light source unit and the fixture main body which supports the said light source unit.

  The light source unit and the lighting fixture according to one embodiment of the present disclosure can suppress the generation of sound by reducing the contact area between the substrate and a pressing piece that holds the substrate.

FIG. 1 is a perspective view illustrating a state in which the lighting apparatus according to the embodiment is installed on a ceiling. FIG. 2 is a cross-sectional view showing a state in which the lighting apparatus is installed on the ceiling. FIG. 3 is an exploded perspective view of the same lighting fixture. FIG. 4A is a perspective view showing a plurality of light source modules and a mounting plate included in the above-described lighting apparatus. FIG. 4B is an enlarged view of part A of FIG. 4A. FIG. 5 is a cross-sectional view of a main part of the above-described lighting fixture. FIG. 6 is a developed view of the pressing piece of the mounting plate. FIG. 7 is a cross-sectional view of a main part of the lighting fixture of the first modification. FIG. 8 is a development view of the pressing piece. FIG. 9 is a cross-sectional view of a main part of the lighting fixture of the second modification. FIG. 10 is a perspective view of an essential part of the above-described lighting fixture.

(1) Outline Hereinafter, the light source unit 3 of the present embodiment and the lighting fixture 1 including the same will be described with reference to FIGS. As shown in FIG. 1, the lighting fixture 1 of the present embodiment is a ceiling-mounted lighting fixture, which is arranged along the lower surface of the ceiling material 90, and a suspension bolt 91 (FIG. 2) is attached to the ceiling material 90. Attached using.

  Note that the technology of the present disclosure can also be applied to lighting fixtures other than the ceiling-mounted lighting fixture. The technology of the present disclosure can be applied to, for example, a lighting fixture attached to a ceiling via a hook ceiling, a lighting fixture attached to a wall or furniture, or a lighting fixture used without being attached to another member.

  As shown in FIG. 3, the light source unit 3 included in the lighting fixture 1 includes a light source 54, a substrate 50 on which the light source 54 is mounted, and a metal attachment plate 6 to which the substrate 50 is attached. The substrate 50 has a first surface 51 and a second surface 52. The first surface 51 faces the mounting plate 6. The second surface 52 is a surface opposite to the first surface 51 and is a surface on which the light source 54 is mounted.

  As shown in FIGS. 4A and 4B, the mounting plate 6 has a pressing piece 7 protruding toward the substrate 50 side. The pressing piece 7 has a contact portion 72 that protrudes toward the second surface 52 and contacts the second surface 52. A contact surface 720 with the second surface 52 of the contact portion 72 is formed in a curved shape protruding toward the second surface 52.

  By forming the contact surface 720 into a curved shape that protrudes toward the second surface 52 in this way, the contact area between the contact portion 72 and the second surface 52 is reduced, and the substrate 50 and the pressing piece 7 are rubbed. Generation of sound is suppressed.

(2) Configuration Hereinafter, the configuration of the lighting fixture 1 and the light source unit 3 of the present embodiment will be described in detail. As shown in FIG. 1, the lighting fixture 1 of the present embodiment includes a fixture main body 2 attached to a ceiling material 90 and a light source unit 3 detachably attached to the fixture main body 2.

  The instrument main body 2 is a sheet metal processed product formed by bending a metal plate, for example. The instrument body 2 of the present embodiment is formed in a flat box shape extending in the horizontal direction and having an upper surface opened (see FIG. 2). Hereinafter, each configuration of the lighting fixture 1 will be described by defining the longitudinal direction of the fixture body 2 as the left-right direction and defining the direction perpendicular to both the vertical direction and the longitudinal direction of the fixture body 2 as the front-rear direction.

  As shown in FIG. 3, a concave groove 20 in which the light source unit 3 is accommodated is formed on the lower surface of the instrument body 2. The concave groove 20 extends over the entire length of the instrument body 2 in the longitudinal direction.

  A plurality of power line holes 21 and a plurality of suspension bolt holes 22 are formed in a portion of the instrument body 2 that constitutes the groove bottom of the concave groove 20.

  Each power line hole 21 and each suspension bolt hole 22 penetrate the portion constituting the groove bottom of the groove 20 in the vertical direction.

  The suspension bolt hole 22 is a hole through which the suspension bolt 91 penetrating the ceiling material 90 is passed as shown in FIG. A nut 92 is attached to the suspension bolt 91 passed through each suspension bolt hole 22. The instrument main body 2 is fixed to the ceiling material 90 by being sandwiched between the nut 92 attached to each suspension bolt 91 and the ceiling material 90.

  The power line hole 21 shown in FIG. 3 is a hole for passing the power line introduced into the room through the ceiling material 90 from the back of the ceiling.

  The lighting fixture 1 of this embodiment further includes a terminal block 11. The terminal block 11 includes a fixture 110 that is attached to the upper bottom surface of the groove 20 and a terminal block 111 that is attached to the fixture 110. The terminal block 111 is connected to the power line introduced from the back of the ceiling through the ceiling member 90 (see FIG. 2) and the power line hole 21 into the groove 20 of the instrument body 2.

  The lighting fixture 1 of this embodiment is further provided with a pair of end caps 10 shown in FIG. The pair of end caps 10 are respectively attached to both end portions of the instrument body 2 in the left-right direction. The pair of end caps 10 closes both ends of the concave groove 20 in the left-right direction.

  The instrument body 2 supports the light source unit 3. The light source unit 3 of the present embodiment is a device having a mounting plate 6, a plurality of light source modules 5, a power supply device 30 and a cover 32, which are formed as one unit.

  The mounting plate 6 is a sheet metal processed product formed by bending the metal plate 8. As shown in FIG. 2, the mounting plate 6 of the present embodiment is formed in a U-shaped cross section.

  The mounting plate 6 has a rectangular plate-like bottom plate portion 62 whose thickness direction is parallel to the vertical direction and whose longitudinal direction is parallel to the horizontal direction, and a pair of side plate portions 63 that protrude upward from both front and rear end portions of the bottom plate portion 62. And have.

  A recess 64 for accommodating the light source module 5 is formed on the bottom surface of the bottom plate portion 62 along the longitudinal direction of the bottom plate portion 62. The upper base of the recess 64 is configured by a substrate mounting portion 66 having a flat plate shape and a thickness direction parallel to the vertical direction. The lower surface of the substrate mounting portion 66 is a surface facing the first surface 51 of the substrate 50 and is a plane.

  As shown in FIG. 3, a wire hole 67 penetrating in the vertical direction is formed at one end of the board mounting portion 66 in the longitudinal direction. An electric wire connected to the power supply device 30 is passed through the electric wire hole 67.

  A power supply device 30 is disposed on the upper surface of the mounting plate 6. The power supply device 30 includes a case 300 and a power supply circuit 301 accommodated in the case 300. The power supply circuit 301 is configured by mounting a large number of circuit components 303 on a printed wiring board 302.

  The case 300 is attached to the attachment plate 6. The circuit component 303 is a component necessary for generating the lighting power of the light source 54, and is a transformer, a diode, a capacitor, or the like, for example. The power supply circuit 301 is electrically connected to the terminal block 111 via an input wire, and is electrically connected to the light source 54 mounted on the substrate 50 via an output wire.

  A plurality of light source modules 5 are accommodated in the recesses 64 of the mounting plate 6. Each light source module (LED module) 5 includes a substrate 50 formed in a long length by a synthetic resin material, and a plurality of light sources 54 mounted on the lower surface (second surface 52) of the substrate 50.

  The light source unit 3 of this embodiment has a pair of board | substrates 50 arrange | positioned as a some board | substrate 50 along with the left-right direction.

  Each substrate 50 is a rectangular printed circuit board whose thickness direction is parallel to the vertical direction and whose longitudinal direction is parallel to the horizontal direction. Each substrate 50 has a first surface 52 that is one surface of both surfaces in the thickness direction, and a second surface 52 that is the surface opposite to the first surface 52. Each of the first surface 51 and the second surface 52 is a flat surface.

  The first surface 52 is the upper surface of the substrate 50 and is disposed along the lower surface of the substrate mounting portion 66. The second surface 52 is a lower surface of the substrate 50 and is a mounting surface on which electronic components are mounted.

  A plurality of light sources 54 are mounted on the second surface 52 of each substrate 50. Each light source 54 is a solid light emitting element, and more specifically, a light emitting diode. As shown in FIG. 4A, the plurality of light sources 54 mounted on each substrate 50 are spaced apart in the left-right direction (longitudinal direction of the substrate 50) at the center in the front-rear direction (width direction of the substrate 50) of the corresponding substrate 50. Open up and line up in a straight line.

  Each substrate 50 shown in FIG. 3 is electrically connected to the power supply device 30 that supplies power to the plurality of light sources 54. In the present embodiment, the connector 35 is mounted on the second surface 52 of one of the plurality of substrates 50, and the connector 35 is connected to the power supply device 30 via the electric wire passed through the electric wire hole 67. Electrically connected. Further, as shown in FIG. 4A, a connector 33 is mounted on an end portion on the adjacent substrate 50 side on the second surface 52 of each substrate 50, and the connectors 33 on the adjacent substrate 50 are connected to each other. As a result, power is supplied from the power supply device 30 to the light source 54 of each substrate 50. Each light source 54 is turned on when power is supplied from the power supply device 30 and irradiates light downward.

  Each substrate 50 is fixed to the mounting plate 6 by the second surface 52 being pressed by a plurality of pressing pieces 7 formed on the mounting plate 6. In the present embodiment, a plurality of sets of pressing pieces 7 formed of two pressing pieces 7 arranged in the front-rear direction are formed in the left and right direction at portions corresponding to the respective substrates 50 in the board mounting portion 66.

  Each pressing piece 7 protrudes downward from the board mounting portion 66 where the board 50 is located. Each pressing piece 7 is a cut-and-raised piece formed by cutting and raising a part of the metal plate 8 constituting the mounting plate 6.

  As shown in FIG. 4B, each pressing piece 7 of the present embodiment has a horizontal direction (perpendicular to the thickness direction of the substrate 50) from the protruding portion 70 protruding downward from the substrate mounting portion 66 and the lower end portion of the protruding portion 70. And a pressing portion 71 protruding in the direction).

  In this embodiment, the protrusion part 70 is formed in the plate shape orthogonal to the front-back direction. Further, the pressing portion 71 protrudes from the lower end portion of the protruding portion 70 toward the side opposite to the substrate 50 adjacent to the corresponding substrate 50.

  As shown in FIG. 4A, in each substrate 50, an opening 53 penetrating in the vertical direction is formed in a portion corresponding to each pressing piece 7. In the present embodiment, a plurality of cutouts arranged in the left-right direction are formed in each of the front end portion and the rear end portion of each substrate 50, and each of the plurality of cutouts constitutes an opening 53. The “notch” includes not only a part of the substrate 50 that is actually cut out, but also a part that is formed simultaneously with the formation of the substrate 50.

  As shown in FIG. 4B, each pressing piece 7 of the mounting plate 6 penetrates the corresponding opening 53 in the vertical direction. The protrusion 70 of each pressing piece 7 is located in the corresponding opening 53. The pressing portion 71 of each pressing piece 7 is positioned below the corresponding substrate 50.

  Each pressing piece 7 according to the present embodiment is located with respect to the protruding portion 70 so that the tip side portion of the pressing portion 71 is located closer to the center side in the front-rear direction of the corresponding substrate 50 as the portion farther from the protruding portion 70. Bend.

  An upper end surface (a contact surface 720 described later) of the pressing portion 71 of each pressing piece 7 is positioned below the corresponding second surface 52 of the substrate 50 and is in contact with the second surface 52. Thereby, each board | substrate 50 is pinched | interposed into the up-down direction by the board | substrate attaching part 66 and the press part 71 of the corresponding some pressing piece 7, and is fixed to the attachment board 6. FIG.

  As shown in FIG. 5, the pressing portion 71 of each pressing piece 7 of the present embodiment is bent so that the upper side (second surface 52) is the outer side and the lower side (opposite side to the second surface 52) is the inner side. It is formed in a plate shape. The pressing portion 71 includes a first plate-like portion 711 and a second plate-like portion 712 whose upper ends are connected via a bent portion 713.

  As shown in FIG. 4B, the first plate-like portion 711 protrudes along the second surface 52 of the corresponding substrate 50 from the lower end portion of the protruding portion 70. The second plate-like portion 712 is connected only to the first plate-like portion 711 and is not connected to the protruding portion 70.

  The first plate-like portion 711 and the second plate-like portion 712 face each other in the thickness direction. One surface in the thickness direction of the first plate-shaped portion 711 is in contact with one surface in the thickness direction of the second plate-shaped portion 712.

  As shown in FIG. 5, the bent portion 713 protrudes upward toward the second surface 52 of the substrate 50 and contacts the second surface 52. That is, in the present embodiment, the bent portion 713 configures the contact portion 72 that contacts the second surface 52.

  The upper end surface of the bent portion 713 is an arcuate curved surface protruding upward. In the present embodiment, this curved surface constitutes a contact surface 720 that is a portion that contacts the second surface 52 in the contact portion 72.

  Each pressing piece 7 comes into contact with the second surface 52 of the substrate 50 corresponding to the contact surface 720 formed in a curved surface shape. For this reason, the contact area with respect to the 2nd surface 52 of each pressing piece 7 becomes smaller than the area of the end surface along the thickness direction of the pressing part 71, and the 2nd surface 52 of the board | substrate 50, the pressing part 71 of the pressing piece 7, and The generation of noise due to rubbing is suppressed.

  As a factor which the 2nd surface 52 and the holding | suppressing part 71 rub, the temperature of each of the board | substrate 50 and the attachment board 6 changes, for example with switching of the light source 54 (refer FIG. 4A) on / off. In this case, due to the difference between the thermal expansion coefficient of the substrate 50 and the thermal expansion coefficient of the mounting plate 6, the pressing portion 71 is displaced with respect to the second surface 52, and the second surface 52 and the pressing portion 71 are rubbed. Further, the second surface 52 and the pressing portion 71 are easily rubbed even when the lighting fixture 1 vibrates.

  If the contact surface 720 of the pressing piece 7 is a cut surface that is cut when the metal plate 8 is punched or the like, the influence of the “burl” generated on the cut surface causes the second surface 52 of the contact portion 72 to Frictional resistance may increase. However, since the contact surface 720 of the present embodiment is a curved surface formed by bending the metal plate 8, the generation of sound due to the influence of the “kaeri” is also suppressed.

  Each pressing piece 7 of the present embodiment is a cut and raised piece, and is formed by, for example, cutting and raising the metal plate 8 constituting the mounting plate 6 as shown below.

  First, in the flat metal plate 8, a part of the portion 85 constituting the substrate mounting portion 66 is punched, so that the metal plate 8 is attached to the flat metal plate 8 as shown in FIG. A punching hole 80 penetrating in the thickness direction and a cut and raised portion 84 surrounded by the punching hole 80 are formed.

  The cut and raised portion 84 includes a protruding plate portion 83, a first plate portion 81, and a second plate portion 82. The protruding plate portion 83 protrudes from a portion 85 constituting the substrate mounting portion 66 in the metal plate 8. The protruding plate portion 83 becomes the protruding portion 70 by being bent at a right angle with respect to the portion 85. Hereinafter, in the flat metal plate 8, a direction in which the protruding plate portion 83 protrudes from the portion 85 is referred to as a protruding direction.

  The first plate portion 81 protrudes from the tip end portion (end portion in the protruding direction) of the protruding plate portion 83 in a direction orthogonal to the protruding direction. The first plate portion 81 is a portion that becomes the first plate-like portion 711.

  The second plate portion 82 protrudes from the first plate portion 81 in the direction opposite to the protruding direction, and faces the base portion of the protruding plate portion 83. The second plate portion 82 is bent to overlap the first plate portion 81 with respect to the first plate portion 81, thereby forming the second plate-like portion 712.

  That is, each pressing piece 7 of the present embodiment is formed by bending the protruding plate portion 83 at a right angle with respect to the portion 85 and bending the second plate portion 82 so as to be folded back with respect to the first plate portion 81. . The bending of the second plate portion 82 with respect to the first plate portion 81 may be performed after the protruding plate portion 83 is bent with respect to the portion 85, or the protruding plate portion 83 is bent with respect to the portion 85. It may be done before being done.

  As shown in FIG. 2, a cover 32 that covers the plurality of substrates 50 from below is detachably attached to the attachment plate 6. The cover 32 is formed of a diffusible material such as milky white acrylic resin. Light emitted from each light source 54 passes through the cover 32 and exits below the cover 32.

  A pair of latching portions 34 projecting upward are formed at both ends of the cover 32 in the front-rear direction. The cover 32 is attached to the attachment plate 6 by the pair of latching portions 34 being hooked on the pair of side plate portions 63 of the attachment plate 6, respectively.

  The light source unit 3 is attached to the instrument body 1 by, for example, fitting a fitted part provided on the attachment plate 6 to a fitting part provided on the instrument body 2.

  The light source unit 3 is assembled as follows, for example. First, the worker attaches the power supply device 30 shown in FIG.

  Next, the operator arranges the plurality of substrates 50 along the substrate attachment portion 66 of the attachment plate 6. At this time, each pressing piece 7 of the mounting plate 6 is passed through the opening 53 of the corresponding substrate 50.

  Next, as shown in FIG. 4B, the operator bends the pressing portion 71 of each pressing piece 7 toward the center side in the front-rear direction of the corresponding substrate 50. Thereby, the contact portion 72 of the pressing portion 71 of each pressing piece 7 is pressed against the second surface 52 of the corresponding substrate 50, and each substrate 50 is fixed to the mounting plate 6. That is, the board | substrate 50 of this embodiment is fixed with respect to the attachment board 6 when the pressing part 71 of the corresponding pressing piece 7 is crimped.

  Next, the operator passes the wire connected to the connector 35 shown in FIG. 3 through the wire hole 67 of the mounting plate 6 and connects to the power supply device 30. Next, the operator attaches the cover 32 to the attachment plate 6. In this way, the light source unit 3 is assembled.

  The lighting fixture 1 is constructed as follows, for example. First, the operator passes the power line exposed in the room through the ceiling material 90 (see FIG. 2) through the power line hole 21 of the instrument body 2. Further, the operator passes the plurality of suspension bolts 91 (see FIG. 2) exposed through the ceiling material 90 through the plurality of suspension bolt holes 22 of the instrument body 2.

  Next, as shown in FIG. 2, the operator attaches a nut 92 to each of the plurality of suspension bolts 91 to fix the instrument body 2 to the ceiling material 90. Next, the operator connects the power line to the terminal block 111 (see FIG. 3) of the instrument body 2.

  Next, the operator attaches the light source unit 3 to the instrument body 2 after electrically connecting the terminal block 111 and the power supply device 30 via the electric wires. In this way, the lighting fixture 1 is constructed on the ceiling.

(3) Modified Example Next, a modified example of the embodiment will be described. In the following description of each modification, the same reference numerals are given to the same components as those in the embodiment, and the description is omitted.

(3-1) Modification 1
As shown in FIG. 7, the pressing portion 71 of the pressing piece 7 of the first modification is directed upward (the second surface 52 of the substrate 50) on the upper surface (the surface facing the second surface 52) of the bent portion 713. A protruding spherical projection 714 is formed. The protrusion 714 is formed, for example, so as to protrude about 0.3 mm above the other part of the bent part 713.

  The protrusion 714 of this modification is formed at a part of the upper end of the bent portion 713 in the front-rear direction. In this modification, a contact portion 72 is configured by the projection 714, and a contact surface 720 is configured by the upper surface of the projection 714 (the surface facing the second surface 52).

  The contact surface 720 is a spherical surface protruding upward. Note that the “spherical surface” in the present disclosure means a partial shape of the surface of a sphere. The sphere includes not only a true sphere but also a non-true sphere such as a spheroid.

  For example, as illustrated in FIG. 8, the protrusion 714 is formed by performing a drawing process on a boundary portion between the first plate portion 81 and the second plate portion 82 in the cut and raised portion 84. The drawing process may be performed before the second plate portion 82 is bent with respect to the first plate portion 81, or after the second plate portion 82 is bent with respect to the first plate portion 81. May be.

  In this modification, as shown in FIG. 7, the spherical contact surface 720 makes point contact with the second surface 52 of the substrate 50. For this reason, the contact area with respect to the 2nd surface 52 of the holding piece 7 becomes small.

(3-2) Modification 2
As shown in FIGS. 9 and 10, the pressing portion 71 of the pressing piece 7 of Modification 2 is formed in a plate shape along the lower surface of the substrate mounting portion 66 (the second surface 52 of the substrate 50). The holding part 71 is bent so that the part farther from the protruding part 70 is positioned higher.

  A protrusion 714 similar to the protrusion 714 of Modification 1 is provided on the upper surface (the surface facing the second surface 52) of the tip portion of the pressing portion 71 (the end opposite to the protruding portion 70). In this modification, the contact portion 72 is configured by the protrusion 714, and the contact surface 720 is configured by the upper surface of the protrusion 714 formed in a spherical shape.

  The holding piece 7 of this modification is also formed by cutting and raising the metal plate 8 constituting the mounting plate 6. In this case, the portion that becomes the pressing portion 71 in the metal plate 8 is formed by being bent at a right angle with respect to the portion that becomes the protruding portion 70. Further, the protrusion 714 is formed by drawing a part of the metal plate 8 that becomes the pressing portion 71.

  In the present modification, as shown in FIG. 9, the spherical contact surface 720 makes point contact with the second surface 52 of the substrate 50. For this reason, the contact area with respect to the 2nd surface 52 of the holding piece 7 becomes small.

  Further, in a state where the contact portion 72 is in contact with the second surface 52, the plate-like pressing portion 71 along the second surface 52 is elastically deformed downward (on the opposite side to the second surface 52), The contact part 72 is pushed upward. For this reason, the board | substrate 50 is firmly clamped between the board | substrate attaching part 66 and the pressing piece 7, and is fixed.

(4) Supplementary The lighting fixture 1 and the light source unit 3 of the embodiment and each modified example can be appropriately changed in design. For example, the pressing piece 7 may be formed by bending without cutting and raising.

  Moreover, the light source unit 3 may have only one board | substrate 50, and may have three or more sheets.

  The opening 53 formed in the substrate 50 may be a hole that penetrates the substrate 50 in the vertical direction.

  The light source 54 is not limited to a light emitting diode, and may be, for example, a semiconductor light emitting element such as a semiconductor laser, or another light emitting element such as an organic electroluminescent element or an inorganic electroluminescent element.

  In addition, the mounting plate 6 includes two types of the pressing piece 7 having the contact portion 72 of the embodiment, the pressing piece 7 having the contact portion 72 of Modification Example 1, and the pressing piece 7 having the contact portion 72 of Modification Example 2. You may have the above pressing piece 7. FIG.

  Further, the second plate portion 82 of the embodiment and the first modification is bent so as to overlap the first plate portion 81, but does not overlap the first plate portion 81 and is between the first plate portion 81. It may be bent so that a gap is formed.

  Moreover, the material and shape of the instrument body 2 are not particularly limited.

  Further, although the contact surface 720 of Modification 2 is a spherical surface, it may be an arcuate curved surface similar to the contact surface 720 of the above embodiment. In this case, the contact surface 720 is formed by, for example, bending a part of the plate-like pressing portion 71 along the second surface 52 so as to protrude upward. In addition, the shape of the pressing portion 71 of Modification 2 is not limited, and may be, for example, a plate shape parallel to the second surface 52.

(5) Summary The light source unit (3) of the embodiment and each modification described above has the following configuration. The light source unit (3) includes a light source (54), a substrate (50) on which the light source (54) is mounted, and a metal mounting plate (6) to which the substrate (50) is attached. The substrate (50) is a first surface (51) facing the mounting plate (6), a surface opposite to the first surface (51), and a second surface on which the light source (54) is mounted. (52). The mounting plate (6) has a pressing piece (7) protruding toward the substrate (50). The holding piece (7) has a contact portion (72) that protrudes toward the second surface (52) and contacts the second surface (52). A contact surface (720) with the second surface (52) of the contact portion (72) is formed in a curved shape protruding toward the second surface (52). Hereinafter, the light source unit (3) having this configuration is referred to as a light source unit (3) of the first aspect.

  The light source unit (3) of the first aspect is a curved surface in which the contact surface (720) with the second surface (52) of the contact portion (72) protrudes toward the second surface (52). For this reason, the contact area with respect to the 2nd surface (52) of a contact part (72) becomes small, and it is suppressed that a board | substrate (50) and a contact part (72) rub and a sound is generated.

  Moreover, the light source unit (3) of the said embodiment has the structure shown below in the light source unit (3) of a 1st aspect. The contact surface (720) is an arcuate curved surface. Hereinafter, the light source unit (3) is referred to as a light source unit (3) of the second aspect.

  In the light source unit (3) of the second aspect, the contact surface (720) which is an arcuate curved surface is in line contact with the second surface (52), and thereby the second surface (52) of the contact portion (72) is in contact with the second surface (52). The contact area is reduced.

  Moreover, the light source unit (3) of the modification 1 and the modification 2 has the structure shown below in the light source unit (3) of a 1st aspect. The contact surface (720) is a spherical surface. Hereinafter, the light source unit (3) is referred to as a light source unit (3) of the third aspect.

  In the light source unit (3) of the third aspect, the contact surface (720) which is a spherical surface makes point contact with the second surface (52), and thereby the contact portion (72) contacts the second surface (52). The area becomes smaller.

  Moreover, the light source unit (3) of the modification 1 has the structure shown below in the light source unit (3) of the 1st-3rd aspect. The holding piece (7) has a bent portion (713) that is bent so that the second surface (52) side is the outside. A contact portion (72) is provided on a surface of the bent portion (713) that faces the second surface (52). Hereinafter, the light source unit (3) is referred to as a light source unit (3) of the fourth aspect.

  In the light source unit (3) of the fourth aspect, the contact portion (72) provided on the surface facing the second surface (52) of the bent portion (713) is in contact with the second surface (52). Further, even if a portion other than the contact portion (72) in the bent portion (713) contacts the second surface (52) due to a dimensional error or the like, the contact area of the bent portion (713) with respect to the second surface (52) is reduced. Get smaller. Therefore, it is possible to suppress the generation of sound by rubbing the bent portion (713) and the second surface (52).

  Moreover, the light source unit (3) of the modification 2 has the structure shown below in the light source unit (3) of the 1st-3rd aspect. The pressing piece (7) has a plate-shaped pressing portion (71) along the second surface (52). A contact portion (72) is provided on the surface of the pressing portion (71) facing the second surface (52). Hereinafter, the light source unit (3) is referred to as a light source unit (3) of the fifth aspect.

  In the light source unit (3) of the fifth aspect, the contact portion (72) provided on the plate-like pressing portion (71) along the second surface (52) is in contact with the second surface (52). And in the state which the contact part (72) contacted the 2nd surface (52), the plate-shaped holding | suppressing part (71) along the 2nd surface (52) is on the opposite side to a 2nd surface (52). The contact part (72) is pushed toward the second surface (52) side by elastic deformation. For this reason, the substrate (50) is firmly fixed to the mounting plate (6).

  Moreover, the lighting fixture (1) of the said embodiment and each modification has the structure shown below. The lighting fixture (1) includes the light source unit (3) according to any one of the first to fifth aspects, and a fixture body (2) that supports the light source unit (3). Hereinafter, the lighting fixture (1) which has this structure is called the lighting fixture (1) of a 1st aspect.

  The lighting fixture (1) of the first aspect is a lighting fixture in which the light source unit (3) is supported by the fixture main body (2), and the light source unit (3) is used as a part of the lighting fixture (1). .

DESCRIPTION OF SYMBOLS 1 Lighting fixture 50 Board | substrate 51 1st surface 52 2nd surface 54 Light source 6 Mounting plate 7 Holding piece 71 Holding part 713 Bending part 714 Protrusion 72 Contact part 720 Contact surface

Claims (6)

A light source;
A substrate on which the light source is mounted;
A metal mounting plate to which the substrate is mounted;
The substrate is
A first surface facing the mounting plate;
A surface opposite to the first surface, and a second surface on which the light source is mounted,
The mounting plate is
It has a pressing piece protruding toward the substrate side,
The pressing piece is
A contact portion that protrudes toward the second surface and contacts the second surface;
The contact surface with the second surface of the contact portion is formed in a curved shape protruding toward the second surface,
Light source unit. The contact surface is an arcuate curved surface,
The light source unit according to claim 1. The contact surface is a spherical surface.
The light source unit according to claim 1. The pressing piece is
Having a bent portion bent so that the second surface side is the outside,
The contact portion is provided on a surface facing the second surface of the bent portion,
The light source unit according to claim 1. The pressing piece is
Having a plate-like pressing part along the second surface;
The contact portion is provided on a surface facing the second surface of the pressing portion,
The light source unit according to claim 1. A light source unit according to any one of claims 1 to 5,
An instrument body for supporting the light source unit,
lighting equipment.

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