JP2020119753A - Lighting device - Google Patents

Abstract

To provide a lighting device which enables improvement of versatility.SOLUTION: A lighting device according to an embodiment includes: multiple light emitting elements; a substrate; a support member; and a lighting part. The multiple light emitting elements are mounted on the substrate. The support member has a holding part which enables the substrate to be disposed on one surface side. The lighting part is disposed spaced apart from the back surface side of the holding part and causes the multiple light emitting elements to light.SELECTED DRAWING: Figure 3

Description

Embodiments of the present invention relate to a lighting device.

An illumination device has been proposed in which a light source unit in which both ends of a cylindrical case accommodating a light source are closed is attached to a body.

JP, 2017-10632, A

The conventional lighting device has a shape and a size according to the use and the like, and tends to be poor in versatility.

The problem to be solved by the present invention is to provide a lighting device capable of improving versatility.

The lighting device according to the embodiment includes a plurality of light emitting elements, a substrate, a support member, and a lighting unit. The substrate mounts a plurality of light emitting elements. The support member has a holding portion for disposing the substrate on the one surface side. The lighting unit is arranged apart from the back side of the holding unit and lights the plurality of light emitting elements.

According to the present invention, versatility can be improved.

FIG. 1 is a perspective view showing an example of the external appearance of the lighting device according to the first embodiment. FIG. 2 is an exploded perspective view showing the lighting device according to the first embodiment. FIG. 3 is a sectional view taken along line AA of FIG. FIG. 4 is an exploded perspective view showing the internal configuration of the illumination unit. FIG. 5 is a side view showing the lighting device according to the first embodiment. FIG. 6 is a perspective view schematically showing an example of the configuration of a housing included in the lighting device according to the second and third embodiments.

The lighting device 1 according to the embodiment described below includes a lighting unit 50 and a housing 5. The illumination unit 50 has a plurality of light emitting elements 62. The housing 5 is plate-shaped, and has a first portion (mounting portion 10), a pair of second portions (housing portion 20), and a pair of third portions (reflection portion 30). The first portion is arranged to face the mounting surface (ceiling surface 100). The pair of second portions bends in the thickness direction intersecting the width direction from both ends in the width direction of the first portion, and accommodates the lighting unit 50. The pair of third portions is bent toward the mounting surface from each end of the pair of second portions. The housing 5 has a dimension A in the width direction on the mounting surface side larger than a dimension B in the thickness direction, and a first angle θ1 formed by the mounting surface and the third portion is formed by the second portion and the third portion. It is larger than the second angle θ2.

The illumination unit 50 according to the embodiment described below has a cover member 51 protruding from the housing 5 in the thickness direction, and the end surface 51c in the width direction of the cover member 51 protruding from the housing 5 and the mounting surface are: It forms an angle different from the first angle θ1.

The lighting device 1 according to the embodiment described below includes a plurality of light emitting elements 62, a substrate 61, a support member 63, and a lighting portion 76. The board 61 mounts a plurality of light emitting elements 62. The support member 63 has a holding portion 63a for disposing the substrate 61 on the one surface side. The lighting portion 76 is arranged apart from the back surface side of the holding portion 63a and lights the plurality of light emitting elements 62.

The lighting device 1 according to the embodiment described below includes a holding member 77 that holds the lighting portion 76 and has a smaller dimension in the length direction than the holding portion 63a.

The lighting portion 76 according to the embodiment described below has the inclined portion 72, and is disposed so as to overlap the support member 63 in the thickness direction. The support member 63 has a support portion 63c extending in the length direction along the inclined portion 72.

The lighting device 1 according to the embodiment described below includes a light emitting unit 60, a power supply unit 70, a cover member 51, and a housing 5. The light emitting unit 60 includes a plurality of light emitting elements 62, a first substrate (board 61) on which the plurality of light emitting elements 62 are mounted, and a support member 63 that supports the first substrate. The power supply unit 70 includes a plurality of lighting components 74 and a second substrate (board 75) on which the plurality of lighting components 74 are mounted, and a lighting unit 76 that lights the plurality of light emitting elements 62 and a holding member that holds the lighting unit 76. 77 and. The cover member 51 accommodates the light emitting unit 60 and the power supply unit 70. The housing 5 has a first portion (mounting portion 10) that is mounted on the mounting surface (ceiling surface 100) and a second portion (holding portion 20) that holds the cover member 51. The second substrate is arranged on the mounting surface side of the plurality of lighting components 74.

The cover member 51 according to the embodiment described below is a tubular member, and has a diffusion portion 51d, a power source storage portion 51a, and a constricted portion 51b. The diffusing unit 51d diffuses and emits the light emitted from the plurality of light emitting elements 62. The power supply accommodating portion 51a is arranged closer to the mounting surface than the diffusing portion 51d and accommodates the power supply portion 70. The constricted portion 51b is arranged between the diffusing portion 51d and the power supply accommodating portion 51a and has a smaller dimension in the width direction than the diffusing portion 51d and the power supply accommodating portion 51a. The power supply unit 70 has an inclined portion 72 supported on the inner surface of the constricted portion 51b.

The lighting device 1 according to the embodiment described below includes a pair of closing members 52 and 53. The pair of closing members 52, 53 closes both ends in the length direction of the cover member 51, and is fixed by a plurality of screw members 57. The screw member 57 includes two screw members 57b and 57c arranged in the width direction at the narrowed portion (second portion 53b) of the closing members 52 and 53 corresponding to the narrowed portion 51b.

The lighting device 1 according to the embodiment described below includes a pair of holding metal fittings 80 and 81 arranged at both ends of the support member 63 in the length direction. The support member 63 and the holding metal fittings 80, 81 have a pair of locking mechanisms (guide holes 63e, protruding portions 82) that buffer the deformation of the support member 63 in the length direction.

Embodiments according to the present invention will be described below with reference to the drawings. It should be noted that each embodiment described below does not limit the technology disclosed by the present invention. Moreover, in the following description, the same reference numerals are given to the same components, and the later description will be appropriately omitted.

[First Embodiment]
FIG. 1 is a perspective view showing an example of the external appearance of the lighting device according to the first embodiment. As shown in FIG. 1, the lighting device 1 includes a housing 5, a lighting unit 50, and side plates 40 and 41.

In order to make the description easy to understand, FIG. 1 illustrates a three-dimensional orthogonal coordinate system including the Z axis with the vertical downward direction as the positive direction and the vertical upward direction as the negative direction. In addition, the X axis is illustrated along the width direction of the lighting device 1, and the Y axis is illustrated along the length direction of the lighting device 1. Such a Cartesian coordinate system may be shown in other drawings used in the description below.

In the lighting device 1, the mounting portion 10 as the first portion of the housing 5 is installed on the ceiling surface 100 (see FIG. 3) that is an example of the mounting surface, and the light output from the lighting portion 50 is an example of the irradiation surface. It is a ceiling-mounted type lighting device that irradiates the floor surface. The lighting device 1 is used, for example, in a place where moisture resistance is required, such as under an eaves or an outdoor passage.

Next, the detailed configuration of the lighting device 1 will be further described with reference to FIGS. 1 to 3. FIG. 2 is an exploded perspective view showing the lighting device according to the first embodiment. FIG. 3 is a sectional view taken along line AA of FIG.

[Case]
The housing 5 is a plate-shaped member having a shape bent at a plurality of locations. The housing 5 serves as a mounting portion 10 serving as a first portion, a housing portion 20 serving as a pair of second portions housing the lighting portion 50, and a pair of third portions reflecting light output from the lighting portion 50. And a reflective portion 30 of. The housing portion 20 is a portion that bends in the thickness direction (Z-axis direction) from both ends in the width direction (X-axis direction) of the mounting portion 10. The pair of reflecting portions 30 are portions that bend from the respective ends in the width direction (X axis direction) of the pair of accommodating portions 20 toward the ceiling surface 100 side (Z axis negative direction side).

Here, in the case 5, for example, the dimension A in the width direction on the ceiling surface 100 side is larger than the dimension B in the thickness direction. Further, in the housing 5, the first angle θ1 formed by the ceiling surface 100 and the reflecting portion 30 is larger than the second angle θ2 formed by the housing portion 20 and the reflecting portion 30. By having such a housing 5, the shape of the lighting device 1 particularly in the width direction can be downsized. Further, the housing 5 having such a shape can be easily molded even when it is downsized or elongated. In addition, the shape of the housing 5 may have a space S1 having a size corresponding to a desired heat dissipation property, an external shape, or the like.

Moreover, the housing 5 has notches 31 and 32 at both ends in the length direction. The notches 31 and 32 are arranged at positions that come into contact with or close to closing members 52 and 53, which will be described later, of the illuminating unit 50. Prevent defects.

[Side plate]
The side plates 40 and 41 are arranged at the ends of the housing 5 in the longitudinal direction. The side plates 40 and 41 are made of, for example, metal or resin members having heat resistance and rust resistance. The side plate 41 (and 40) has a through hole 41a for fixing the side plates 40, 41.

[Illumination part]
The lighting unit 50 includes a cover member 51, closing members 52 and 53, water blocking packings 54 and 55, a light emitting unit 60, a power supply unit 70, and holding metal fittings 80 and 81. The light emitting unit 60 and the power supply unit 70 are housed inside a cover member 51 formed in a tubular shape. Further, a pair of holding metal fittings 80, 81, a pair of water blocking packings 54, 55, and a pair of closing members 52, 53 are sequentially arranged at both end portions in the length direction (Y-axis direction) of the cover member 51, Moisture resistance with respect to the light emitting unit 60 and the power supply unit 70 housed in the cover member 51 is realized.

(Cover member)
The cover member 51 is made of a translucent material such as acrylic or polycarbonate. The cover member 51 has a function of diffusing the light emitted from the light emitting unit 60 after being subjected to the frost treatment. The cover member 51 may be appropriately mixed with a diffusing material or a coloring agent.

The cover member 51 includes a power source housing portion 51a arranged on the ceiling surface 100 side, a diffusion portion 51d arranged on the irradiation surface side and protruding in the thickness direction from the housing 5, and the power source housing portion 51a and the diffusion portion 51d. It has a constricted portion 51b arranged therebetween. Further, the widthwise end surface 51c of the cover member 51 protruding from the housing 5 and the ceiling surface 100 are substantially right angles, and form an angle different from the acute first angle θ1. By making the angle between the end surface 51c and the ceiling surface 100 different from the first angle θ1 as described above, light is likely to be emitted not only on the irradiation surface side but also in the width direction of the illumination section 50 via the end surface 51c. For example, the color rendering effect of the lighting device 1 can be enhanced. Further, since the cover member 51 has such an end surface 51c, for example, the illumination unit 50 can be easily removed from the housing 5. The shape of the cover member 51, in particular, the diffusion portion 51d may be appropriately changed, for example, so that the desired light distribution can be obtained. Further, the translucency may be changed according to the part of the cover member 51.

(Light emitting part)
The light emitting unit 60 includes a substrate 61 as a first substrate, a plurality of light emitting elements 62, and a support member 63. The substrate 61 is formed in a long, substantially rectangular shape. The substrate 61 is formed of a flat plate of a glass epoxy substrate or a glass composite substrate which is an insulating material, and has a wiring pattern formed of copper foil on the front surface side. When the substrate 61 is made of an insulating material, a ceramic material or another synthetic resin material can be applied. When the substrate 61 is made of metal, it is possible to use a metal base substrate in which an insulating layer is laminated on one surface of a base plate such as aluminum having good heat conductivity and excellent heat dissipation. A plurality of substrates 61 may be arranged side by side in the length direction (Y-axis direction).

In addition, it is preferable to form a white resist layer over the entire surface of the substrate 61. This resist layer acts as a reflection layer, and of the light emitted from the light emitting element 62, it is possible to reflect the light heading for the surface of the substrate 61 to the front side, and effectively the light emitted from the light emitting element 62. Can be used.

The plurality of light emitting elements 62 are arranged at predetermined intervals along the length direction of the substrate 61. The light emitting elements 62 may be arranged in one row or in two or more rows. In addition, the light emitting elements 62 may be arranged in a so-called staggered arrangement in which the positions are alternately displaced in the width direction intersecting the arrangement direction along the length direction of the substrate 61, for example.

Further, the plurality of light emitting elements 62 are arranged so that the position in the Z-axis direction is closer to the ceiling surface 100 of the end surface 51c of the cover member 51, but not limited to this, for example, the end surface 51c closer to the irradiation surface. May be arranged on the irradiation surface of the constricted portion 51b. Further, the dimension of the housing 5 in the thickness direction may be changed as appropriate according to the arrangement of the plurality of light emitting elements 62.

The light emitting element 62 is an LED, which is a surface mount type LED package. In general, it includes an LED chip arranged in a main body formed of ceramics or heat-resistant synthetic resin, and a light-transmitting resin for molding such as epoxy resin or silicone resin for sealing the LED chip. ..

The LED chip is, for example, a blue LED chip that emits blue light. The translucent resin contains a fluorescent substance, and in order to emit white light, a yellow fluorescent substance that emits yellowish light that is a complementary color to blue light is used. There is. The LED chip may emit red light, green light, or white light, for example. The translucent resin may be a diffusing member that has a milky white color and diffuses light.

The LED may be a bullet-type LED, and the mounting method and format are not particularly limited.

The supporting member 63 is, for example, a metal chassis and includes a holding portion 63a, a connecting portion 63b, a supporting portion 63c, and a power supply mounting portion 63d. The holding portion 63a holds the substrate 61 on which the plurality of light emitting elements 62 are mounted. The substrate 61 is attached to the holding portion 63a by a fixing means (not shown). The heat generated by the plurality of light emitting elements 62 is transferred to the supporting member 63 via the substrate 61 and is radiated.

The support portion 63c is formed obliquely with respect to the X-axis direction and the Z-axis direction when viewed from the Y-axis direction. In the support member 63, a plurality of light emitting elements 62 mounted on the substrate 61 are determined in advance by the support portion 63c contacting the convex portion 51e on the inner surface side of the cover member 51 formed of the power source housing portion 51a and the constricted portion 51b. Are placed in the designated position.

The connecting portions 63b extend from both ends in the width direction (X-axis direction) of the holding portion 63a along the Z-axis direction, and connect the holding portion 63a and the supporting portion 63c. The connecting portion 63b has a size such that a lighting portion 76 described later is arranged apart from the holding portion 63a. For this reason, versatility can be improved, and reduction in heat dissipation of the light emitting unit 60 can be suppressed even when the size is reduced, for example.

The power supply attachment portions 63d are arranged at both ends of the support member 63 in the width direction (X axis direction). The power source unit 70 is attached to the power source attaching unit 63d.

(Power supply part)
The power supply unit 70 includes a lighting unit 76 and a holding member 77 that holds the lighting unit 76. The lighting unit 76 is a box-shaped member that accommodates a board 75 as a second board and a plurality of lighting components 74 mounted on the board 75. The power supply unit 70 converts the AC power supplied from the AC power supply into DC power and outputs the DC power. The AC power supply is, for example, a commercial power supply.

The lighting unit 76 is connected to the plurality of light emitting elements 62 by a wiring pattern on the substrate 75 and wiring not shown. The lighting unit 76 supplies a DC output to the plurality of light emitting elements 62 and controls the lighting of the plurality of light emitting elements 62.

The lighting portion 76 has a bottom surface 71 located at an end portion in the thickness direction (Z-axis direction), side surfaces 73 located at both ends in the width direction (X-axis direction), and an inclination located between the bottom surface 71 and the side surface 73. And a portion 72. The inclined portion 72 is supported on the inner surface of the constricted portion 51b via the support portion 63c of the support member 63. Since the lighting portion 76 has a shape supported by the inner surface of the constricted portion 51b as described above, the internal space of the cover member 51 can be effectively utilized, and, for example, the lighting device 1 can be downsized.

The board 75 is arranged closer to the ceiling surface 100 than the plurality of lighting components 74. Therefore, the heat generated by the light emitting unit 60 and the heat generated by the power supply unit 70 can be dissipated at positions separated from each other, and heat dissipation can be improved. At this time, since the space S2 is provided between the light emitting unit 60 and the power supply unit 70, heat dissipation can be further improved.

The holding member 77 is, for example, a metal heat radiation member, and radiates the heat transmitted from the lighting portion 76. In addition, the holding member 77 has mounting portions 78 extending along the length direction at both ends in the width direction (X axis direction). The attachment portion 78 is attached to the power supply attachment portion 63d of the support member 63, whereby the light emitting portion 60 and the power supply portion 70 are integrated.

(Other configurations)
As shown in FIG. 2, the lighting unit 50 may further include a reinforcing member 90. The reinforcing member 90 is, for example, a metal- or resin-made rod-shaped or linear member, and is arranged so as to sandwich both ends in the width direction of the cover member 51 and hook the end portion to the constricted portion 51b. For example, when the mounting portion 10 is mounted on the ceiling surface 100, the cover member 51 may be deformed due to the weight of the light emitting unit 60 and the power supply unit 70 housed in the cover member 51, and a desired irradiation characteristic may not be obtained. Therefore, by disposing the reinforcing member 90, the strength of the cover member 51 can be increased and the deformation of the cover member 51 can be reduced. The reinforcing member 90 is particularly useful in a mode in which a plurality of substrates 61 are arranged in the length direction, for example. The reinforcing member 90 to be used may be one or plural, and may not be used.

[Integration of light emitting part and power supply part]
FIG. 4 is an exploded perspective view showing the internal configuration of the illumination unit. The support member 63 has a plurality of recesses 66 on the inner surface of the power supply mounting portion 63d. On the other hand, the holding member 77 has a plurality of convex portions 79 on the outer surface of the mounting portion 78 corresponding to the plurality of concave portions 66. The light emitting unit 60 and the power supply unit 70 are integrated by bringing the support member 63 and the holding member 77 close to each other and engaging the plurality of protrusions 79 with the plurality of recesses 66. Note that the support member 63 and the holding member 77 are not limited to the illustrated form, and the support member 63 may have a convex portion and the holding member 77 may have a concave portion, for example.

Further, in the example shown in FIG. 4, the holding member 77 has a smaller dimension in the length direction than the support member 63. Therefore, the degree of freedom in arranging the holding member 77 increases. That is, in the illustrated example, the holding member 77 is arranged on the Y-axis negative direction side of the support member 63, but it is not limited to this and may be arranged on the Y-axis positive direction side. Further, the power supply unit 70 including the holding member 77 may be arranged so as to be integrated with the support member 63 over the entire Y axis direction.

[Connecting retaining brackets]
Next, the connection of the holding metal fittings 80, 81 (see FIG. 2) will be further described with reference to FIG. As shown in FIG. 4, the support member 63 has guide holes 63e penetrating both ends of the connecting portion 63b in the length direction (Y-axis direction). The holding metal fitting 80 and the holding metal fitting 81 (not shown) have a protrusion 82 at a position corresponding to the guide hole 63e. The guide hole 63e and the protrusion 82 are an example of a pair of locking mechanisms. By engaging the guide hole 63e and the protrusion 82 with each other, the illumination unit 50 and the holding metal fittings 80, 81 are connected. At this time, when the dimension of the guide hole 63e in the Y-axis direction is larger than the dimension of the protruding portion 82 in the Y-axis direction as shown in the figure, deformation of the support member 63 in the longitudinal direction due to heat can be buffered.

[Fixation of blocking member]
Next, fixing the closing members 52 and 53 will be described with reference to FIG. FIG. 5 is a side view showing the lighting device according to the first embodiment. Note that the side plate 41 is not shown in FIG. 5 for easy understanding.

As shown in FIG. 5, the closing member 53 has a first part 53a, a second part 53b as a constricted part, and a third part 53c. The first portion 53a, the second portion 53b, and the third portion 53c are formed so as to correspond to the power source storage portion 51a, the constricted portion 51b, and the diffusion portion 51d of the cover member 51, respectively. The closing member 52 (see FIG. 2) and the closing member 53 close both ends in the length direction (Y-axis direction) of the cover member 51 so as to sandwich the water blocking packings 54 and 55 (see FIG. 2), and a plurality of screw members are provided. Fixed at 57. The screw member 57 includes a screw member 57a that fixes the center of the first portion 53a, and two screw members 57b and 57c that are arranged in the second portion 53b in the width direction. As described above, the second portion 53b having a smaller widthwise dimension than the first portion 53a and the third portion 53c is fixed by the two screw members 57b and 57c, and the first portion 53a on the ceiling surface 100 side is screwed. By fixing with the member 57a, it is possible to suppress the deterioration of the moisture resistance due to the bending of the closing member 53, for example.

A wiring hole 56 is formed in the closing member 53. The wiring hole 56 is an opening through which a wiring for supplying electric power to the power supply unit 70 (lighting unit 76) is inserted and pulled into the cover member 51. The wiring hole 56 is arranged on the outer side of the screw member 57 to prevent a defect such as disconnection when the screw member 57 is attached. In addition, in FIG. 5, the wiring holes 56 are illustrated as having three wiring holes 56, but the present invention is not limited to this, and one, two, or four or more wiring holes 56 may be provided. Further, the wiring hole 56 may be arranged only in the closing member 53, or may be arranged in both the closing members 52, 53.

The fixing member 58 is used to attach the side plate 41 to the closing member 53. The fixing member 58 is inserted into the through hole 41a (see FIG. 2) formed in the side plate 41 from the Z-axis positive direction side of the closing member 53, and the closing member 53 and the side plate 41 are fixed. The opening for inserting the fixing member 58 is sealed with a sealing bush 59.

[Second and third embodiments]
FIG. 6 is a perspective view schematically showing an example of the configuration of a housing included in the lighting device according to the second and third embodiments. FIG. 6A shows a housing 5A according to the second embodiment, and FIG. 6B shows a housing 5B according to the third embodiment.

As shown in FIG. 6A, a housing 5A in which the reflecting section 30 is arranged so as to be inclined toward the irradiation surface side may be applied. The housing 5A can be provided with a defective portion 21A having a predetermined length L1 from both ends 201 in the longitudinal direction of the housing portion 20. 21 A of deficient parts are arrange|positioned in the position which contacts or adjoins the closure members 52 and 53. Since the defective portion 21A does not have the reflecting portion 30, it is possible to prevent problems such as deformation due to buffering between the housing 5 and the closing members 52 and 53 and deterioration of moisture resistance.

Further, as shown in FIG. 6B, a case 5B that does not have the reflection section 30 may be applied. In such a case, notches 21B are provided at both ends 201 in the length direction of the housing portion 20 that come into contact with or close to the closing members 52 and 53, and deformation due to buffering between the housing 5 and the closing members 52 and 53, deterioration of moisture resistance, etc. Can be prevented.

6(a) and 6(b), the angle θ3 formed by the mounting portion 10 and the housing portion 20 may be 90°, for example, but is not limited to this and may be, for example, an acute angle or an obtuse angle. May be.

As described above, the lighting device 1 according to the embodiment includes the lighting unit 50 and the housing 5. The illumination unit 50 has a plurality of light emitting elements 62. The housing 5 is plate-shaped, and has a first portion (mounting portion 10), a pair of second portions (housing portion 20), and a pair of third portions (reflection portion 30). The first portion is arranged to face the mounting surface (ceiling surface 100). The pair of second portions bends in the thickness direction intersecting the width direction from both ends in the width direction of the first portion, and accommodates the lighting unit 50. The pair of third portions is bent toward the mounting surface from each end of the pair of second portions. The housing 5 has a dimension A in the width direction on the mounting surface side larger than a dimension B in the thickness direction, and a first angle θ1 formed by the mounting surface and the third portion is formed by the second portion and the third portion. It is larger than the second angle θ2. This makes it possible to reduce the size of the lighting device 1, particularly in the width direction. Further, the housing 5 having such a shape can be easily molded even when it is downsized or elongated. Therefore, versatility can be improved.

Further, the lighting unit 50 according to the embodiment includes the cover member 51 that projects from the housing 5 in the thickness direction, and the end surface 51c in the width direction of the cover member 51 that projects from the housing 5 and the mounting surface are the first. It forms an angle different from the angle θ1. Thereby, for example, the color rendering effect of the lighting device 1 can be enhanced. In addition, the illumination unit 50 can be easily removed from the housing 5. Therefore, versatility can be improved.

Further, the lighting device 1 according to the embodiment includes a plurality of light emitting elements 62, a substrate 61, a support member 63, and a lighting portion 76. The board 61 mounts a plurality of light emitting elements 62. The support member 63 has a holding portion 63a for disposing the substrate 61 on the one surface side. The lighting portion 76 is arranged apart from the back surface side of the holding portion 63a and lights the plurality of light emitting elements 62. As a result, a decrease in heat dissipation of the light emitting unit 60 is suppressed, and versatility can be improved.

Further, the lighting device 1 according to the embodiment includes the holding member 77 that holds the lighting portion 76 and has a smaller dimension in the length direction than the holding portion 63a. This increases the degree of freedom in arranging the holding member 77.

Further, the lighting portion 76 according to the embodiment has the inclined portion 72, and is disposed so as to overlap the support member 63 in the thickness direction. The support member 63 has a support portion 63c extending in the length direction along the inclined portion 72. Thereby, heat dissipation can be improved and versatility can be improved.

Further, the lighting device 1 according to the embodiment includes the light emitting unit 60, the power supply unit 70, the cover member 51, and the housing 5. The light emitting unit 60 includes a plurality of light emitting elements 62, a first substrate (board 61) on which the plurality of light emitting elements 62 are mounted, and a support member 63 that supports the first substrate. The power supply unit 70 includes a plurality of lighting components 74 and a second substrate (board 75) on which the plurality of lighting components 74 are mounted, and a lighting unit 76 that lights the plurality of light emitting elements 62 and a holding member that holds the lighting unit 76. 77 and. The cover member 51 accommodates the light emitting unit 60 and the power supply unit 70. The housing 5 has a first portion (mounting portion 10) that is mounted on the mounting surface (ceiling surface 100) and a second portion (holding portion 20) that holds the cover member 51. The second substrate is arranged on the mounting surface side of the plurality of lighting components 74. Thereby, heat dissipation can be improved and versatility can be improved.

In addition, the cover member 51 according to the embodiment is a tubular member, and has a diffusion portion 51d, a power source storage portion 51a, and a constricted portion 51b. The diffusing unit 51d diffuses and emits the light emitted from the plurality of light emitting elements 62. The power supply accommodating portion 51a is arranged closer to the mounting surface than the diffusing portion 51d and accommodates the power supply portion 70. The constricted portion 51b is arranged between the diffusing portion 51d and the power supply accommodating portion 51a and has a smaller dimension in the width direction than the diffusing portion 51d and the power supply accommodating portion 51a. The power supply unit 70 has an inclined portion 72 supported on the inner surface of the constricted portion 51b. As a result, the internal space of the cover member 51 can be effectively utilized, and, for example, the lighting device 1 can be downsized.

Further, the lighting device 1 according to the embodiment includes a pair of closing members 52 and 53. The pair of closing members 52, 53 closes both ends in the length direction of the cover member 51, and is fixed by a plurality of screw members 57. The screw member 57 includes two screw members 57b and 57c arranged in the width direction at the narrowed portion (second portion 53b) of the closing members 52 and 53 corresponding to the narrowed portion 51b. As a result, it is possible to suppress a decrease in moisture resistance.

Further, the lighting device 1 according to the embodiment includes a pair of holding metal fittings 80 and 81 arranged at both ends of the support member 63 in the length direction. The support member 63 and the holding metal fittings 80, 81 have a pair of locking mechanisms (guide holes 63e, protruding portions 82) that buffer the deformation of the support member 63 in the length direction. As a result, it is possible to suppress a decrease in moisture resistance and irreversible deformation of the lighting device 1.

In each of the above-described embodiments, the lighting device 1 is described as a ceiling-mounted type, but the lighting device 1 is not limited to this, and may be, for example, an embedded type or a hanging type. Further, the lighting device 1 may be attached to, for example, a wall surface instead of the ceiling surface 100.

Although the embodiments of the present invention have been described, the embodiments are presented as examples and are not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof, as well as included in the scope and spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Lighting device 10 Mounting parts 5, 5A, 5B Housing 20 Housing part 21A Defect part 21B Notch part 30 Reflecting parts 31, 32 Notch parts 40, 41 Side plate 41a Through hole 50 Illuminating part 51 Cover member 51a Power source accommodating part 51b Constricted part 51c End face 51d Diffusion part 52, 53 Closing member 53a First part 53b Second part 53c Third part 54, 55 Water blocking packing 56 Wiring hole 57 Screw member 58 Fixing member 59 Sealing bush 60 Light emitting part 61 Substrate 62 Light emitting element 63 support member 63a holding part 63b connection part 63c support part 63d power supply mounting part 63e guide hole 66 recessed part 70 power supply part 71 bottom surface 72 slanted part 73 side surface 74 lighting component 75 board 76 lighting part 77 holding member 78 mounting part 79 convex part 80, 81 retaining metal fitting 82 projecting portion 90 reinforcing member 100 ceiling surface

Claims (3)

A plurality of light emitting elements;
A substrate on which the plurality of light emitting elements are mounted;
A supporting member having a holding portion for disposing the substrate on one surface side;
A lighting unit which is arranged apart from the back side of the holding unit and which lights the plurality of light emitting elements;
A lighting device comprising: A holding member that holds the lighting portion and has a smaller dimension in the length direction than the holding portion;
The lighting device according to claim 1, further comprising: The lighting portion has an inclined portion, and is disposed so as to overlap the supporting member in the thickness direction,
The illumination device according to claim 1, wherein the support member has a support portion extending in the length direction along the inclined portion.

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