JP2016076403A - Light source unit and lighting fixture using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce intrusion of a foreign substance into a space surrounded by a mounting member and a cover.SOLUTION: A mounting member 21 includes: a bottom wall part 211 which is formed in a rectangular plate shape and in which an LED module 22 is mounted; and a pair of side wall parts 212 for protruding in a direction orthogonal to the bottom wall part 211 from both end parts in the width direction of the bottom wall part 211 and to the opposite side from the LED module 22. A cover 23 has: a translucent part 231 arranged oppositely from the bottom wall part 211 so as to cover the LED module 22; and a pair of extension parts 232 extending in the direction approaching with each other from both end parts in the width direction of the translucent part 231. At each of the pair of extension parts 232, an elastic part 234 is provided protruding further to the mounting member 21 side than a portion opposing to the bottom wall part 211, and coming into contact with the bottom wall part 211 in a state where the cover 23 is mounted on the mounting member 21.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a light source unit and a lighting fixture using the same, and more particularly to a light source unit formed in a long shape and a lighting fixture using the same.

  2. Description of the Related Art Conventionally, ceiling-mounted lighting fixtures that are attached to the ceiling have been provided (see, for example, Patent Document 1). The lighting fixture described in Patent Document 1 includes a long fixture body that is directly attached to the ceiling using a suspension bolt, and a light source portion that is detachably attached to the fixture body, and the lower surface side of the fixture body Is provided with a recess for accommodating the light source part over its entire length.

  The light source unit includes a substrate on which a plurality of light emitting elements are mounted, an attachment member for attaching the substrate to the instrument body, and a cover member attached to the attachment member so as to cover the plurality of light emitting elements. The cover member is formed in the same long shape as the instrument body and the mounting member by extruding acrylic, for example, and the cut and raised pieces provided on both sides in the width direction of the mounting member are arranged on both sides in the width direction of the cover member. It is attached to an attachment member by making it fit in each provided fitting groove.

JP 2012-3993 A

  By the way, when the long cover member is extrusion-molded as in the lighting apparatus shown in Patent Document 1 described above, the cost can be reduced as compared with the case where a dedicated mold is used, but there is dimensional variation and warpage. Easy to grow. Therefore, when the cover member is attached to the attachment member, a gap is formed between them, and there is a possibility that foreign matters such as insects and dust enter the space surrounded by the attachment member and the cover member through the gap. .

  The present invention has been made in view of the above problems, and an object of the present invention is to reduce entry of foreign matter into a space surrounded by an attachment member and a cover.

  The light source unit of the present invention has a long mounting member, a light source unit attached to the mounting member, and a light-transmitting cover that covers the light source unit and covers the light source unit. The mounting member is formed in a rectangular plate shape to which the light source unit is attached, and the light source unit is in a direction intersecting the bottom wall unit from both ends in the width direction of the bottom wall unit. And a pair of side wall portions projecting to the opposite side of the light source portion, and the cover includes a light transmissive portion disposed to face the bottom wall portion so as to cover the light source portion, and both ends in the width direction of the light transmissive portion. A pair of extending portions extending in a direction approaching each other, and each of the pair of extending portions protrudes toward the mounting member from a portion facing the bottom wall portion, and the cover is attached to the mounting portion. Elasticity that contacts the bottom wall when attached to a member Wherein the is provided.

  The lighting fixture of this invention is equipped with said light source unit and the fixture main body to which the said light source unit is attached, It is characterized by the above-mentioned.

  According to the configuration of the present invention, there is an effect that it is possible to reduce the intrusion of foreign matter into the space surrounded by the attachment member and the cover.

It is sectional drawing of the light source unit which concerns on embodiment of this invention. It is a disassembled perspective view of the lighting fixture which concerns on embodiment of this invention. It is a whole perspective view of the lighting fixture which concerns on embodiment of this invention. It is sectional drawing of the lighting fixture which concerns on embodiment of this invention. It is a side view of the cover used for the light source unit which concerns on embodiment of this invention. It is a perspective view which can omit a part of cover used for the light source unit concerning the embodiment of the present invention. 7A to 7D are enlarged views of main parts showing variations of the cover used in the light source unit according to the embodiment of the present invention. It is a principal part enlarged view which shows another example of the cover used for the light source unit which concerns on embodiment of this invention.

  The light source unit 2 and the lighting fixture 10 according to the embodiment of the present invention will be specifically described with reference to the drawings. However, the configuration described below is merely an example of the present invention, and the present invention is not limited to the following embodiment, and the technical idea according to the present invention is not deviated from other embodiments. Within the range, various changes can be made according to the design and the like.

  In the following description, unless otherwise specified, front / rear, left / right, and upper / lower directions are defined in FIG. Therefore, in the present embodiment, the longitudinal direction of the instrument body 1 is the front-rear direction, the short direction (width direction) of the instrument body 1 is the left-right direction, and the height direction of the instrument body 1 is the up-down direction. However, these directions do not define the mounting direction of the lighting fixture 10.

  The lighting fixture 10 of this embodiment is a ceiling-mounted lighting fixture as shown in FIG. The lighting fixture 10 includes a fixture main body 1 that is attached to the lower surface of the ceiling plate 100 using a suspension bolt 200 and a nut 201, and a light source unit 2 that is detachably attached to the fixture main body 1.

  The instrument body 1 is formed into a flat box shape that is long in the front-rear direction and has an upper surface opened by bending a sheet metal. On the opposite side (lower side) of the ceiling plate 100 in the vertical direction of the instrument body 1, a recess 11 for accommodating the light source unit 2 is provided over the entire length of the instrument body 1. Further, on both sides in the left-right direction of the concave portion 11, inclined portions 12, 12 that extend from the opening edge of the concave portion 11 and incline upward toward the outside are provided (see FIG. 4).

  The concave portion 11 is formed in a rectangular shape by a bottom wall portion 111 formed in a rectangular plate shape long in the front-rear direction and a pair of side wall portions 112 protruding downward from both ends in the left-right direction of the bottom wall portion 111. The bottom wall portion 111 is provided with a plurality of holes 1111 (two in FIG. 2) for passing the electric wires along the front-rear direction, and the holes 1112 for passing the suspension bolt 200 are located at positions near both ends in the front-rear direction. One each is provided.

  A terminal block 13 to which the power cable 4 exposed to the indoor side through the ceiling plate 100 is connected is attached to the bottom wall portion 111. The terminal block 13 has a main body 131 formed in a rectangular parallelepiped shape, and three electric wires 133 including a ground wire are connected to the main body 131. In addition, a receptacle connector 132 is connected to the ends of these electric wires 133.

  Furthermore, the right side wall 112 of the recess 11 is provided with holes 1121 and 1121 to be hooked with hooks 41 and 41, which will be described later, at positions near both ends in the front-rear direction. In addition, hook metal fittings 43 and 43 to which hook springs 42 and 42 to be described later are hooked are attached to the left side wall portion 112 of the concave portion 11 at positions near both ends in the front-rear direction, respectively.

  Further, in the recess 11, an opening 1122 (only one opening 1122 is shown in FIG. 2) formed so as to extend from each side wall 112 to the bottom wall 111 is a terminal block attached to the bottom wall 111. 13 is provided in the vicinity. Each opening 1122 connects the side wall 112 and a space 121 (see FIG. 4) surrounded by the inclined portion 12 continuous from the side wall 112 and the concave portion 11. For example, the space 121 includes the lighting fixtures 10 arranged in parallel in the front-rear direction. In this case, a wiring space through which the feed wiring to be constructed is passed is formed.

  End covers 3 are attached to both ends of the instrument body 1 in the front-rear direction, as shown in FIGS. Each end cover 3 is formed to have substantially the same outer shape as the cross-sectional shape in the front-rear direction of the instrument body 1 and is attached so as to close the openings at both ends in the front-rear direction of the instrument body 1. Each end cover 3 has knock-out holes 31 and 31 at positions near both ends in the left-right direction. Then, by opening these knockout holes 31, 31, the feed wiring passed through the space 121 can be drawn to the outside.

  As shown in FIGS. 1, 2, and 4, the light source unit 2 is attached to the attachment member 21 so as to cover the LED module 22, the attachment member 21 to which the LED module 22 is attached, and the LED module 22. And a cover 23 to be attached. The light source unit 2 includes a power supply device 24 that supplies power to the LED module 22 and a terminal block 25 to which the signal cable 5 exposed to the indoor side through the ceiling plate 100 is connected.

  The LED module 22 includes a substrate 221 formed in a rectangular plate shape that is long in the front-rear direction. A plurality of LEDs 222 (light emitting elements) are mounted on the lower surface of the substrate 221 along the front-rear direction (longitudinal direction). A connector (not shown) that electrically connects the power supply device 24 is mounted on the front end of the substrate 221. An electric wire (not shown) is connected to this connector, and the LED module 22 and the power supply device 24 are electrically connected by connecting the end of the electric wire to the power supply device 24.

  The attachment member 21 is formed into a U shape by bending a sheet metal, and a bottom wall portion 211 formed in a rectangular plate shape that is long in the front-rear direction, and from both ends in the left-right direction (width direction) of the bottom wall portion 211. A pair of side wall portions 212 projecting upward (in a direction intersecting the bottom wall portion 211). A hook portion 2121 formed by bending in a circular shape is provided over the entire length (see FIGS. 1 and 4) at the tip (upper end) of each side wall portion 212.

  In addition, hook springs 42 and 42 that are respectively hooked on the hook metal fittings 43 and 43 of the instrument body 1 are provided at positions near the both ends in the front-rear direction at the left end portion of the bottom wall portion 211. Furthermore, hook pieces 41, 41 that are respectively hooked in the holes 1121, 1121 of the instrument body 1 are provided at positions near both ends in the front-rear direction at the right end portion of the bottom wall portion 211.

  The cover 23 is made of a diffusible material (for example, milky white acrylic resin), and is formed in a box shape that is long in the front-rear direction and has an upper surface (surface on the mounting member 21 side) opened. Further, the cover 23 has a translucent portion 231 having a convex lens shape in which the amount of protrusion downward increases as it approaches the center from both ends in the left-right direction (width direction) (FIGS. 1 and 5). reference).

  As shown in FIGS. 5 and 6, a pair of extending portions 232 that extend in directions approaching each other are provided at both ends in the left-right direction of the light transmitting portion 231 over the entire length. Each extending portion 232 includes a first extending portion 2321 that extends horizontally and inward from the distal end of the light transmitting portion 231, an inclined portion 2322 that is inclined obliquely downward from the distal end of the first extending portion 2321, and an inclined portion. The second extending portion 2323 extends horizontally and inward from the tip of the portion 2322.

  A protruding wall portion 233 that protrudes upward (on the attachment member 21 side) is provided over the entire length of the intermediate portion of each first extending portion 2321 in the left-right direction. In addition, a protruding portion 2331 that protrudes inward is provided at the tip (upper end) of each protruding wall portion 233.

  The power supply device 24 includes a case 241 that is formed in a box shape that is long in the front-rear direction and has an open bottom surface by bending the sheet metal. An L-shaped extending portion 243 that protrudes leftward and protrudes upward is integrally provided on the left side surface portion of the case 241. A U-shaped groove 246 is formed by the left side surface portion of the case 241 and the extending portion 243, and is used as, for example, a wiring space (see FIG. 1).

  Inside the case 241 is housed a board (not shown) on which electronic components constituting a power supply circuit for generating power supply to the LED module 22 are mounted. In addition, three electric wires 243 including a ground wire are connected to the input end of the substrate, and a plug connector 242 connected to the receptacle connector 132 is connected to the tip of these electric wires 243 (see FIG. 2).

  By the way, when the above-described cover 23 is molded, there are a method using a dedicated mold and a method of extrusion molding. In the case of extrusion molding, the cost can be reduced as compared with the case of using a dedicated molding die, but dimensional variation and warpage tend to increase. Therefore, there is a possibility that a gap is generated between the cover 23 and the attachment member 21 when the cover 23 is attached, and a foreign matter such as an insect or dust may enter the space surrounded by the attachment member 21 and the cover 23 through the gap. is there.

  Therefore, in the present embodiment, in order to close the gap generated between the attachment member 21 and the cover 23, the elastic portion 234 that contacts the bottom wall portion 211 of the attachment member 21 with the cover 23 attached to the attachment member 21 is covered. 23. Hereinafter, the elastic part 234 will be specifically described with reference to FIGS. 1, 5, and 6.

  As shown in FIGS. 5 and 6, the elastic portion 234 is formed integrally with the cover 23 by so-called two-color molding (double molding) using an elastic material (for example, an elastomer such as silicone rubber) different from the cover 23. . The elastic portion 234 includes a support portion 2341 formed along the protruding wall portion 233 of the cover 23, the first extension portion 2321, and the inclined portion 2322, and a contact portion 2342 inclined obliquely upward from the tip of the support portion 2341. Have The contact portion 2342 is a portion that comes into contact with the lower surface of the bottom wall portion 211 in a state where the cover 23 is attached to the attachment member 21 and elastically deforms in the vertical direction.

  Here, if the angle formed by the contact portion 2342 and the second extension portion 2323 is too large, the contact portion 2342 may be bent by the tip of the contact portion 2342 coming into contact with the bottom wall portion 211. Moreover, when the angle which the contact part 2342 and the 2nd extension part 2323 make is too small, the contact | adhesion degree to the bottom wall part 211 by the contact part 2342 will become low. Therefore, the angle formed by the contact portion 2342 and the second extending portion 2323 is preferably set to 30 ° to 70 °, and more preferably 60 °.

  In the present embodiment, the elastic portion 235 is integrally formed from the tip side of each protruding wall portion 233 of the cover 23 to the protruding portion 2331. This elastic portion 235 is also formed integrally with the cover 23 by two-color molding using the same elastic material as the elastic portion 234. In the state in which the cover 23 is attached to the attachment member 21, each elastic portion 235 is in close contact with the hook portion 2121 of each side wall portion 212, so that the cover 23 is formed between the attachment member 21 and the cover 23 by extrusion molding. Even when a gap is generated, the gap can be closed (see FIG. 1).

  Next, the assembly procedure of the light source unit 2 will be described. First, the worker attaches the power supply device 24 to the upper surface side of the attachment member 21 and attaches the LED module 22 to the lower surface of the bottom wall portion 211 of the attachment member 21 so that the LEDs 222 face downward. At this time, the operator uses, for example, a claw (not shown) formed by cutting and raising a part of the bottom wall portion 211 of the attachment member 21 to attach the LED module 22 to the bottom wall portion 211 of the attachment member 21. Fix it.

  Further, the worker connects an electric wire (not shown) drawn from a connector (not shown) mounted on the substrate 221 of the LED module 22 to the power supply device 24. Finally, the operator attaches the cover 23 to the attachment member 21 with the opening side facing upward. At this time, the projections 2331 of the respective protruding wall portions 233 of the cover 23 are hooked on the hooking portions 2121 of the corresponding side wall portions 212 of the mounting member 21, so that the cover 23 is attached to the mounting member 21.

  At this time, as shown in FIG. 1, the elastic portions 234 of the cover 23 are in close contact with the lower surface of the bottom wall portion 211 of the mounting member 21. Thus, even when a gap is generated between the cover 23 and the attachment member 21 in a state where the cover 23 is attached, the gap can be closed by the elastic portions 234, and the space surrounded by the attachment member 21 and the cover 23 can be obtained. Intrusion of foreign matter (such as insects and dust) can be reduced.

  Here, in the state where the cover 23 is attached to the attachment member 21, the inclined portion 2322 receives a reaction force of the contact portion 2342 generated when contacting the bottom wall portion 211, so that a balanced state is achieved. Further, since the elastic portion 234 is formed of an elastic material, for example, even if the cover 23 is attached to the attachment member 21 in a distorted state at the time of construction, the contact portion 2342 can correct the variation, and foreign matter can enter. Can be reduced. The light source unit 2 is assembled according to the above procedure.

  Further, the length of the elastic portion 234 is the same as that of the substrate 221 in the vertical direction (a direction orthogonal to the longitudinal direction and the width direction of the mounting member 21) in a state where the cover 23 is mounted to the mounting member 21 as shown in FIG. It is preferable to set the dimensions so that they do not overlap. Thereby, it is possible to suppress the light emitted from the LED 222 mounted on the substrate 221 from being blocked by the elastic portion 234.

  Then, the construction procedure of the lighting fixture 10 is demonstrated. In the following description, it is assumed that the terminal block 13 is attached to the instrument body 1 in advance.

  First, the installer passes the power cable 4 and the signal cable 5 exposed to the indoor side through the ceiling plate 100 through the holes 1111 and 1111 of the appliance body 1 respectively, and the suspension bolt 200 exposed to the indoor side through the ceiling plate 100. , 200 is passed through holes 1112 and 1112. Further, the installer passes the washer 202 through each suspension bolt 200 and then screws the nut 201 into each suspension bolt 200 to fix the instrument body 1 to the lower surface of the ceiling plate 100.

  Thereafter, the installer connects the end of the power cable 4 to the terminal block 13, hooks each hooking piece 41 of the light source unit 2 into the corresponding hole 1121 of the instrument body 1, and attaches the light source unit 2 to the instrument body 1. Temporarily hold. Next, the installer connects the receptacle connector 132 of the terminal block 13 to the plug connector 242 of the power supply device 24 while temporarily holding the light source unit 2 on the instrument main body 1, and connects the signal cable 5 to the terminal block 25. Connect to.

  Finally, the installer rotates the light source unit 2 in the left-right direction using the holes 1121 and 1121 of the instrument body 1 as fulcrums, and attaches the light source unit 2 to the instrument body 1. At this time, each of the hook springs 42 of the light source unit 2 is hooked on the corresponding metal fitting 43 of the instrument body 1, so that the light source unit 2 is attached to the instrument body 1. The construction of the lighting fixture 10 is completed according to the above procedure (see FIGS. 3 and 4).

  7A to 7D are enlarged views of main parts showing variations of the cover 23 used in the light source unit 2 of the present embodiment. Even when these configurations are adopted, the mounting member 21 and the cover 23 are similarly surrounded. Invasion of foreign matter into the space can be reduced.

  As shown in FIG. 7A, when a recess 2342a is provided in the middle of the contact portion 2342 of the elastic portion 234, the contact portion 2342 can be easily bent. In addition, as shown in FIG. 7A, when the thickness of the contact portion 2342 is made thinner as it approaches the tip, there is an advantage that the contact portion 2342 can be easily along the bottom wall portion 211.

  Needless to say, in the elastic part 234 shown in FIG. 5 and the elastic part 234 shown in FIGS. 7C and 7D described later, the thickness of the elastic part 234 may be reduced as it approaches the tip.

  Further, as shown in FIG. 7B, the elastic portion 234 is configured by a protrusion that protrudes upward (on the attachment member 21 side) from the upper surface of the second extension portion 2323 and is formed over the entire length of the second extension portion 2323. May be. Also in this case, even when a gap is generated between the cover 23 and the attachment member 21, the gap can be closed by bringing the elastic portion 234 into close contact with the lower surface of the bottom wall portion 211.

  Furthermore, as shown in FIG. 7C, an elastic portion 234 that extends stepwise in the left-right direction from the upper surface of the second extension portion 2323 may be formed. However, in this case, as shown in FIG. 7C, the height of the elastic portion 234 (the height dimension of the elastic portion 234 is set so that the elastic portion 234 is above the plane P1 connecting the tip of the elastic portion 234 and the tip of the second extending portion 2323. It is preferable to set the vertical dimension). Thereby, it is possible to suppress the light from the LED 222 mounted on the substrate 221 from being blocked by the elastic portion 234.

  Moreover, as shown to FIG. 7D, it may be the L-shaped elastic part 234 which protruded upwards from the upper surface of the 2nd extension part 2323, and made the front-end | tip protrude outward. Also in this case, even when a gap is generated between the cover 23 and the attachment member 21, the gap can be closed by bringing the elastic portion 234 into close contact with the lower surface of the bottom wall portion 211.

  Further, the elastic part 234 is preferably formed of a white material or a material having the same color as the cover 23 (for example, milky white), thereby transmitting light emitted from the LED module 22 toward the elastic part 234. And a decrease in the amount of irradiation light can be suppressed. Further, the elastic portion 234 may be formed of a dark color material (for example, black) as long as the light distribution through the cover 23 is not affected.

  By the way, in the above-mentioned embodiment, although the elastic part 234 was formed in two colors, it may be formed simultaneously using the same material as the cover 23. Also in this case, the intrusion of foreign matter into the space surrounded by the attachment member 21 and the cover 23 can be reduced by bringing the elastic portion 234 into close contact with the bottom wall portion 211 of the attachment member 21.

  However, for example, when the cover 23 is formed of a hard resin such as polycarbonate or acrylic, depending on the shape of the elastic portion 234, the stress at the time of contact is concentrated in one place, and there is a risk of damage at a portion where the stress is concentrated due to deterioration over time. There is. Therefore, the shape of the elastic portion is preferably a shape that can disperse the stress, and for example, it may be formed in a wave shape as shown in FIG.

  In the present embodiment, the LED module 22 having the substrate 221 on which the LEDs 222 are mounted is used as the light source unit. However, the light source unit is not limited to the present embodiment as long as it emits light toward the illumination space. . Further, in the present embodiment, the elastic portion 235 is also provided in the projection portion 2331 of each protruding wall portion 233, but it is sufficient that at least the elastic portion 234 is provided, and the present invention is not limited to this embodiment.

  Further, the protrusions shown in FIG. 7B described above do not have to be two rows, and may be one row or three or more rows.

  As described above, the light source unit 2 of the present embodiment includes the attachment member 21 formed in a long shape, the LED module 22 (light source unit) attached to the attachment member 21, and the cover 23. The cover 23 has translucency and is attached to the attachment member 21 so as to cover the LED module 22. The mounting member 21 is formed in the shape of a rectangular plate and has a bottom wall portion 211 to which the LED module 22 is mounted. The mounting member 21 intersects the bottom wall portion 211 from both ends in the width direction of the bottom wall portion 211 and is opposite to the LED module 22. And a pair of side wall portions 212 projecting from each other. The cover 23 covers the LED module 22 so as to face the bottom wall portion 211 and a pair of extending portions 232 extending in a direction approaching each other from both ends in the width direction of the light transmitting portion 231. And have. Each of the pair of extending portions 232 is provided with an elastic portion 234 that protrudes from the portion facing the bottom wall portion 211 toward the attachment member 21 and contacts the bottom wall portion 211 in a state where the cover 23 is attached to the attachment member 21. It has been.

  According to the above configuration, the elastic portion 234 of the cover 23 comes into contact with the bottom wall portion 211 of the mounting member 21 even when a gap is generated between the mounting member 21 and the cover 23 by, for example, extruding the cover 23. Thus, the gap can be closed. As a result, it is possible to reduce entry of foreign matter into the space surrounded by the attachment member 21 and the cover 23.

  Moreover, it is preferable that the LED module 22 has the board | substrate 221 with which LED222 (light emitting element) was mounted like the light source unit 2 of this embodiment. In this case, it is preferable that the length of the elastic portion 234 is set so as not to overlap the substrate 221 attached to the bottom wall portion 211 in the direction orthogonal to the longitudinal direction and the width direction of the attachment member 21.

  According to the above configuration, it is possible to suppress the light emitted from the LED 222 mounted on the substrate 221 from being blocked by the elastic portion 234.

  Further, like the light source unit 2 of the present embodiment, it is preferable that the thickness dimension of the elastic portion 234 is set so as to become thinner as it approaches the tip.

  According to the said structure, there exists an advantage that it becomes easy to let the elastic part 234 follow the bottom wall part 211 of the attachment member 21. FIG.

  Further, like the light source unit 2 of the present embodiment, the elastic part 234 is preferably formed of a white material or a material having the same color as the cover 23.

  According to the said structure, the light radiated | emitted from the LED module 22 can be permeate | transmitted toward the elastic part 234, and the fall of the irradiation light quantity can be suppressed.

  The lighting fixture 10 of this embodiment includes a light source unit 2 and a fixture body 1 to which the light source unit 2 is attached.

  According to the above configuration, it is possible to provide the luminaire 10 in which entry of foreign matter into the space surrounded by the attachment member 21 and the cover 23 is reduced.

DESCRIPTION OF SYMBOLS 1 Appliance main body 2 Light source unit 10 Lighting fixture 21 Mounting member 22 LED module (light source part)
23 Cover 211 Bottom wall 212 Side wall 221 Substrate 222 LED (light emitting device)
231 Light transmission part 232 Extension part 234 Elastic part

Claims (5)

A mounting member formed in a long shape;
A light source attached to the attachment member;
A cover that has translucency and is attached to the attachment member so as to cover the light source part;
The mounting member is formed in a rectangular plate shape to which the light source unit is mounted, and from both ends in the width direction of the bottom wall unit in a direction intersecting the bottom wall unit and on the side opposite to the light source unit. A pair of protruding side walls,
The cover includes a light-transmitting portion disposed to face the bottom wall portion so as to cover the light source portion, and a pair of extending portions extending in directions approaching each other from both ends in the width direction of the light-transmitting portion. Have
Each of the pair of extending portions is provided with an elastic portion that protrudes from the portion facing the bottom wall portion toward the attachment member and contacts the bottom wall portion with the cover attached to the attachment member. A light source unit characterized by that. The light source unit has a substrate on which a light emitting element is mounted,
The length of the elastic portion is set so as not to overlap the substrate attached to the bottom wall portion in a direction orthogonal to a longitudinal direction and a width direction of the attachment member. The light source unit according to 1.   3. The light source unit according to claim 1, wherein a thickness dimension of the elastic portion is set so that the elastic portion becomes thinner toward the tip. 4.   The light source unit according to claim 1, wherein the elastic portion is formed of a white material or a material having the same color as the cover.   An illumination fixture comprising: the light source unit according to any one of claims 1 to 4; and a fixture main body to which the light source unit is attached.

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