Lighting device and luminaire

Abstract

To provide a lighting device capable of preventing a shadow of an antenna from being reflected on a lighting cover even when the antenna is mounted so as to protrude from a surface of a light source substrate.SOLUTION: A lighting device (100) includes a light source substrate (130), a wireless module substrate (140), a cover (11), and a fixing pin (30), and the wireless module substrate (140) is disposed so as to overlap the light source substrate (130). The antenna (145) is disposed at a position closer to an edge than a center of a region of the light source substrate (130) where the light sources (115) are disposed, so as to protrude from the wireless module substrate (140) toward a surface where the light sources (115) are disposed, and so that a top of the antenna (145) protrudes to a position farther from a surface of the light source substrate (130) than tops of the light sources (115), and at least one light source (115) is disposed in a region closer to the edge than the position where the antenna (145) protrudes.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a lighting device and a lighting fixture. [Background technology]

[0002] Conventionally, among lighting devices that include a light source board and a light source board on which an antenna capable of transmitting and receiving wireless signals is mounted, and a lighting cover that covers them, lighting devices in which the antenna is mounted on the same surface as the light source board are known.

[0003] Patent document 1 discloses a lighting device capable of wireless communication, characterized by having a light source substrate mounted thereon and a chip antenna for receiving or transmitting wireless signals mounted on the same surface of the light source substrate as the light source substrate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-150265 Summary of the Invention [Problem to be solved by the invention]

[0005] When considering communication efficiency, it is possible to mount the antenna so that it protrudes from the surface of the light source board, but this creates the problem that the light emitted from the light source is blocked by the antenna, and the shadow of the antenna is cast on the lighting cover when the light source is turned on.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to realize a lighting device that can prevent the shadow of the antenna from being cast on the lighting cover, even when the antenna is mounted so that it protrudes from the surface of the light source substrate. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, an illumination device according to one aspect of the present invention comprises a light source board on which a plurality of light sources that emit light are arranged, a wireless module board on which an antenna unit capable of wireless communication is provided, a cover that covers the light source board and the wireless module board, and a fixing pin for fixing to an object to be attached, wherein the wireless module board is arranged so as to overlap the light source board on the side opposite to the surface on which the light sources are arranged, and the antenna unit is arranged at a position closer to the edge than the center of the area on the light source board on which the light sources are arranged, so as to protrude from the wireless module board towards the surface on which the light sources are arranged, and so that the top of the antenna unit protrudes at a position farther from the surface of the light source board than the top of the light source, and at least one of the light sources is arranged in an area of ​​the light source board on which the light sources are arranged, further to the edge than the position where the antenna unit protrudes. [Effects of the Invention]

[0008] According to one aspect of the present invention, it is possible to realize a lighting device that can prevent the shadow of the antenna from being cast on the lighting cover, even when the antenna is mounted so as to protrude from the surface of the light source substrate. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing a light source unit (lighting device) of a lighting fixture according to an embodiment of the present invention. [Figure 2] FIG. 2 is another perspective view showing the light source unit of the lighting fixture. [Figure 3] FIG. 2 is a perspective view showing a socket of a lighting fixture. [Figure 4] 1 is a cross-sectional view showing a lighting fixture attached to a lighting mounting portion of a building. [Figure 5] FIG. 2 is a perspective view showing how the power supply unit is attached to the housing. [Figure 6] FIG. 10 is a perspective view of a case in which a disk-shaped light source substrate is attached to the case. [Figure 7] FIG. 2 is a plan view of the housing with the light source board attached thereto. [Figure 8] FIG. 2 is a cross-sectional view of the lighting device, showing an example of the direction of light emitted from a light source unit. [Figure 9] 10 is a diagram showing a light source unit of the lighting fixture in a state where the housing and the light source cover are separated. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, identical or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated. For ease of understanding, the drawings also depict the X-, Y-, and Z-axes of a three-dimensional Cartesian coordinate system as appropriate. As an example, the X- and Y-axes are approximately parallel to the horizontal plane, and the Z-axis is approximately parallel to the vertical direction.

[0011] A lighting fixture 1 according to an embodiment of the present invention will be described below. The lighting fixture 1 emits light. The lighting device 100 main body is attached to the lighting fixture 1, which is attached to a lighting mounting portion of a building. The lighting fixture 1 is, for example, a downlight, a bracket light, a spotlight, or the like. The lighting mounting portion is, for example, a ceiling or a wall.

[0012] Specifically, the lighting fixture 1 includes a light source unit (lighting device) 100. The light source unit 100 emits light. The light source unit 100 includes a light source section 110 (see, for example, FIG. 4), a power supply section 120 (see, for example, FIG. 4), a housing section 10, and a light source cover (lighting cover) 11. The light source cover 11 includes a protrusion 12. The protrusion 12 protrudes outward from the light source cover 11. The light source section 110 emits light. The light source section 110 is disposed in the housing section 10 having a substantially cylindrical shape. The power supply section 120 supplies power to the light source section 110. The light source cover 11 covers the light source section 110 of the light source board 130. The light source cover 11 is disposed at an end of the housing section 10 in a first direction D1. The first direction D1 indicates a direction substantially perpendicular to a lighting mounting section such as a ceiling. For example, the first direction D1 is substantially parallel to the vertical direction. The light source unit 110, the power supply unit 120, the housing unit 10, the light source cover 11, and the protrusion 12 will be described in detail below.

[0013] For ease of explanation, a center line AX is illustrated in FIG. 1. The center line AX is an imaginary line passing through the center of the light source unit 100 (housing 10). The center line AX is approximately perpendicular to the bottom surface of the light source cover 11. Hereinafter, a direction perpendicular to the center line AX will be referred to as a "radial direction RD." The "radial direction RD" may be any direction as long as it is a direction perpendicular to the center line AX, and is not particularly limited. Furthermore, a direction along an arc centered on the center line AX will be referred to as a "circumferential direction CD." The first direction D1 is, for example, approximately parallel to the center line AX.

[0014] As shown in Fig. 2, the light source unit 100 has a power supply housing 10a and a housing 10b. That is, the power supply housing 10a and the housing 10b constitute the housing 10. The power supply housing 10a houses the power supply unit 120. In this embodiment, the power supply housing 10a with the power supply unit 120 housed therein constitutes a power supply unit. The housing 10b houses the power supply housing 10a.

[0015] The light source unit 100 further includes a pair of power supply terminal portions (fixing pins) 30. The housing 10b includes a cylindrical tube portion 22, an end surface portion 20a, and a protrusion 20. The tube portion 22 has, for example, a substantially cylindrical shape. The end surface portion 20a is located at one end of the tube portion 22. Specifically, the end surface portion 20a is disposed at the end of the tube portion 22 in the second direction D2. The second direction D2 indicates the opposite direction to the first direction D1. The second direction D2 is, for example, substantially parallel to the vertical direction. The second direction D2 is, for example, substantially parallel to the center line AX. The end surface portion 20a has, for example, a substantially annular shape or a substantially circular plate shape.

[0016] The protrusion 20 protrudes from the end surface 20a in the second direction D2. The protrusion 20 has, for example, a substantially covered cylindrical shape or a substantially cylindrical shape. In the light source unit 100, the power supply accommodating portion 10a is exposed from the end surface 20a and a portion of the protrusion 20. For example, the power supply accommodating portion 10a includes two pairs of exposed portions R1, R2. The pair of exposed portions R1 is exposed from the end surface 20a and a portion of the protrusion 20. The pair of exposed portions R2 is exposed from a portion of the protrusion 20. The pair of exposed portions R1 and the pair of exposed portions R2 are arranged at positions offset from each other in the circumferential direction CD.

[0017] The pair of power supply terminals 30 supply external power to the power supply unit 120. Specifically, the pair of power supply terminals 30 are conductive members for supplying power to the light source unit 100. The pair of power supply terminals 30 are disposed in the power supply housing 10a. Specifically, each of the pair of power supply terminals 30 protrudes in the second direction D2 from a pair of exposed portions R1 of the power supply housing 10a. That is, each of the pair of exposed portions R1 is formed of an electrically insulating material such as synthetic resin and is positioned around each of the pair of power supply terminals 30. This ensures an electrical insulation distance between the pair of power supply terminals 30. The pair of power supply terminals 30 face each other across the protruding portions 20. Specifically, the pair of power supply terminals 30 face each other in the radial direction RD across the protruding portions 20. The power supply terminals 30 have a substantially T-shape in cross section. The power supply terminals 30 are made of metal and are conductive.

[0018] Specifically, each of the pair of power supply terminal portions 30 has a first cylindrical portion 30a and a second cylindrical portion 30b. The first cylindrical portion 30a extends along the first direction D1. The first cylindrical portion 30a has a generally cylindrical shape. The first cylindrical portion 30a protrudes in the second direction D2 from the end surface portion 20a. The second cylindrical portion 30b protrudes in a direction generally parallel to the radial direction RD from the end of the first cylindrical portion 30a in the second direction D2. The second cylindrical portion 30b has a generally cylindrical shape.

[0019] The power supply housing 10a also has a pair of first engagement portions 21. The pair of first engagement portions 21 are arranged on the pair of exposed portions R2. FIG. 2 shows one of the pair of first engagement portions 21. The pair of first engagement portions 21 face each other in the radial direction RD. The first engagement portion 21 is a recess that is recessed inward in the radial direction RD from the circumferential surface of the protrusion 20. The first engagement portion 21 has, for example, a substantially L-shape.

[0020] The protrusion 20, the end surface 20a, and the pair of power supply terminals 30 constitute a base 40 of the light source unit 100. The base 40 is, for example, a GX53 type or a GH76p type.

[0021] Furthermore, the protrusion 12 protrudes from the surface of the light source cover 11 on the first direction D1 side toward the first direction D1 side.

[0022] Next, the socket 50 of the lighting fixture 1 will be described with reference to Figures 3 and 4. As shown in Figures 3 and 4, the lighting fixture 1 further includes the socket 50. The light source unit 100 (Figure 2) is attached to the socket 50. The socket 50 corresponds to an object to which the light source unit 100 (lighting device) is attached. Specifically, the pair of power supply terminal portions 30 (Figure 2) of the light source unit 100 are connected to the socket 50.

[0023] The socket 50 has a socket body 51, an insertion hole 52, a pair of connection holes 53, a pair of second engagement portions 54, and a pair of terminals (not shown). The pair of terminals is arranged corresponding to the pair of connection holes 53, respectively.

[0024] The socket body 51 has a substantially annular shape. The socket body 51 is made of an insulating resin material such as PBT. The insertion hole 52 penetrates the socket body 51 along the center line AX. The protrusion 20 (FIG. 2) of the light source unit 100 is inserted into the insertion hole 52.

[0025] The socket body 51 has a bottom plate 55. The bottom plate 55 is located on the first direction D1 side of the socket body 51. A pair of connection holes 53 is provided in the bottom plate 55. The pair of connection holes 53 face each other in the radial direction RD. The pair of connection holes 53 are rotationally symmetrical with respect to the center line AX. A terminal is disposed inside each connection hole 53 to which the power supply terminal portion 30 (FIG. 2) inserted into the connection hole 53 is electrically connected.

[0026] Specifically, each connection hole 53 has an elongated hole 56 and a circular hole 57. The elongated hole 56 extends in the circumferential direction CD and is generally arc-shaped. The circular hole 57 is located at one end of the elongated hole 56 in the circumferential direction CD. The second cylindrical portion 30b (FIG. 2) of the power supply terminal portion 30 can be inserted into the circular hole 57. The first cylindrical portion 30a (FIG. 2) of the power supply terminal portion 30 can be inserted into the elongated hole 56, but the second cylindrical portion 30b (FIG. 2) cannot be inserted into the elongated hole 56.

[0027] The pair of second engagement portions 54 are provided on the inner circumferential surface of the socket body 51. Each second engagement portion 54 protrudes inward in the radial direction RD. The pair of second engagement portions 54 face each other in the radial direction RD. The second engagement portions 54 are disposed at positions offset in the circumferential direction CD with respect to the connection hole 53.

[0028] Next, with reference to FIGS. 2 and 3 , a method for attaching the light source unit 100 to a socket 50, which is an attachment object, will be described. First, the power supply terminal portion 30 of the light source unit 100 is inserted into the circular hole 57 of the socket 50. Then, the light source unit 100 is rotated in one direction in the circumferential direction CD. In this case, the power supply terminal portion 30 of the light source unit 100 is rotated along the elongated hole 56 of the socket 50, and the first engagement portion 21 of the light source unit 100 engages with the second engagement portion 54 of the socket 50. As a result, the power supply terminal portion 30 is connected to the terminal of the socket 50, and the light source unit 100 is supported by the second engagement portion 54 of the socket 50. In other words, the light source unit 100 is attached to the socket 50. The power supply terminal portion 30 can be considered to be a fixing pin for attaching the light source unit 100 to the socket 50, which is an attachment object.

[0029] Next, we will explain the electrical configuration of the light source unit 100. The light source unit 100 is connected to an external AC power supply via an external switch. The light source unit 100 lights up based on the AC power supply.

[0030] With the light source unit 100 attached to the socket 50, power is supplied from an AC power source to the power supply unit 120 through the terminal of the socket 50 and the power supply terminal unit 30 of the light source unit 100. As a result, power is supplied from the power supply unit 120 to the light source unit 110, and the light source unit 110 lights up.

[0031] The external switch is, for example, a wall switch. The light source unit 100 can be turned on and off by switching the external switch. Specifically, when the external switch is turned on, power is supplied from an AC power source to the light source unit 100, and the light source unit 100 is turned on. In this case, more specifically, power from the AC power source is supplied to the light source unit 100 via a pair of power supply terminals 30 ( FIG. 2 ). When the external switch is turned off, power supplied from the AC power source to the light source unit 100 is cut off, and the light source unit 100 is turned off. The external switch may be a lighting controller. The lighting controller has, for example, a function to group multiple light source units 100 and turn them on or off, a function to turn the light source units 100 on or off at a time desired by the user, and the like.

[0032] Specifically, the light source unit 110 includes one or more light-emitting elements (light sources) 115 that emit light and a light source substrate 130 (see, for example, FIGS. 4 and 6 ). The light-emitting elements 115 are, for example, LEDs (Light Emitting Diodes). In this case, the light source unit 110 is, for example, an SMD (surface mount device) element or a COB (chip on board) element. When the light source unit 110 includes multiple light-emitting elements 115, the light colors of the multiple light-emitting elements 115 may be different or the same. Furthermore, the luminance of the multiple light-emitting elements may be different or the same. The luminance of the light source unit 110 may be variable. For example, the light source unit 110 in this embodiment includes two types of light-emitting elements that emit different light colors. One of the two types of light-emitting elements 115 emits light with, for example, a high correlated color temperature when lit. The other of the two types of light-emitting elements 115 emits light with, for example, a low correlated color temperature when lit.

[0033] The light source substrate 130 has, for example, a substantially circular plate shape. A plurality of light emitting elements 115 are arranged on the light source substrate 130. Specifically, each light emitting element 115 of the light source unit 110 is arranged on the mounting surface of the light source substrate 130. The light source substrate 130 is, for example, a thermally conductive substrate such as an aluminum substrate (MCPCB). The light source substrate 130 may also be an insulating substrate such as a resin substrate. Furthermore, as described above, the plurality of light emitting elements 115 may include a first light emitting element 115 having a first color temperature and a second light emitting element 115 having a second color temperature different from the first color temperature.

[0034] The power supply unit 120 supplies power to the light source units 110 based on an AC power source in response to operation of an external switch. For example, the power supply unit 120 includes power supply elements such as a converter, a capacitor, and a resistor, and a power supply board 125 (see FIG. 4, etc.) on which the power supply elements are mounted. The power supply elements convert AC voltage supplied from the AC power source into DC voltage and supply a constant current to each light source unit 110. Therefore, in other words, the power supply elements constitute a power supply device that supplies power to the light source units 110.

[0035] Next, with reference to Fig. 4, the mounting of the lighting fixture 1 to the lighting mounting part RF will be described. As shown in Fig. 4, the lighting fixture 1 is mounted to the lighting mounting part RF. For example, the lighting mounting part RF is a ceiling. The ceiling may be horizontal or may be inclined relative to the horizontal. Specifically, the lighting mounting part RF has a mounting hole HL. The lighting fixture 1 is mounted to the mounting hole HL.

[0036] As shown in FIG. 4 , the lighting fixture 1 includes a socket 50, a case 70, and multiple mounting members 71. The socket 50 is fixed inside the case 70. The light source unit 100 is attached to the socket 50. In the example shown in FIG. 4 , the case 70 has a generally cylindrical shape with a lid. Multiple mounting members 71 are fixed to the outer periphery of the case 70. The mounting members 71 are, for example, leaf springs. The case 70 is attached to the lighting mounting portion RF by the elastic force of the multiple mounting members 71. The case 70 is attached to a building or the like to hold and house the socket 50 and further house the light source unit (lighting device) 100 fixed to the socket 50. In this embodiment, when the light source unit 100 is attached to the socket 50, it is preferable to provide a space F1 between the bottom surface of the case 70 and the housing 10 of the light source unit 100. Providing the space F1 improves ventilation between the case 70 and the light source unit 100, thereby suppressing temperature increases in the light source unit 100.

[0037] On the other hand, when the light source unit 100 is removed from the socket 50, the light source unit 100 is rotated in the direction opposite to one direction in the circumferential direction CD. As shown in Fig. 4, when the light source unit 100 is attached to the socket 50, if the end face of the case 70 on the first direction D1 side is positioned closer to the second direction D2 side than the end face of the light source unit 100 on the first direction D1 side, if the protrusion 12 is located on the surface of the light source cover 11 on the first direction D1 side, the worker removing the light source unit 100 can easily reach the protrusion 12, making it easier to rotate the light source unit 100 relative to the socket 50.

[0038] Next, a description will be given of each board included in the light source unit 100 with reference to Fig. 4. As shown in Fig. 4, the housing 10 of the light source unit 100 includes a light source board 130, a wireless module board 140, and a power supply board 125.

[0039] The wireless module substrate 140 and the power supply substrate 125 are arranged substantially parallel to and overlapping with the light source substrate 130 on the side opposite to the surface of the light source substrate 130 on which the light emitting elements 115 are arranged.

[0040] 4, the wireless module substrate 140 is disposed between the light source substrate 130 and the power supply substrate 125. The wireless module substrate 140 is provided with an antenna unit 145 capable of wireless communication. The antenna unit 145 may be configured to be connected to the wireless module substrate 140 by a connector. The antenna unit 145 has a flat plate shape, and is provided with a metal pattern that transmits or receives radio waves used for wireless communication.

[0041] For example, antenna unit 145 is used for communication with a remote control that remotely controls lighting fixture 1, or with an electronic device such as a smartphone that is capable of communication via Bluetooth (registered trademark).

[0042] In order to improve the transmission and reception efficiency of the antenna unit 145, i.e., the antenna sensitivity, it is necessary to place a ground plate on the wireless module substrate 140. For example, when wireless communication is performed using radio waves in the 2.4 GHz band, as in Bluetooth (registered trademark), a quarter wavelength is about 30 mm, so it is desirable to place a conductor pattern called a ground plate on the wireless module substrate 140, with a vertical length and horizontal length of about 30 mm or more.

[0043] For example, if the height of the light source unit 100 in the AX direction is about 50 mm, and the substrates are not arranged parallel to each other, and a ground plate with a length of 30 mm is arranged along the AX direction, the height of the light source unit 100 in the AX direction will increase by several tens of mm or more.

[0044] 4, the substrates are arranged substantially parallel to one another, which allows a longer, larger-area ground plate to be arranged along the RD direction of the wireless module substrate 140. For example, if the base 40 is a GX53 type, the distance between the pair of power supply terminals 30 is 53 mm, so a ground plate with a length of approximately 30 mm can be arranged along the RD direction of the wireless module substrate 140.

[0045] This enables wireless communication with high antenna sensitivity, contributes to making the entire light source unit 100 thinner, and reduces the size of the case 70 in the Z-axis direction, reducing restrictions on where the lighting fixture 1 can be installed.

[0046] The light source substrate 130 is formed with an insertion portion (insertion hole) 150 (see FIG. 6 etc.) through which the antenna portion 145 is inserted, and the antenna portion 145 is disposed so as to protrude from above the surface of the wireless module substrate 140 on which the light emitting elements 115 of the light source substrate 130 are disposed, through the insertion portion 150. As a general rule, the greater the protrusion of the metal pattern portion formed on the antenna portion 145 that transmits or receives radio waves used in wireless communication, the greater the radio wave intensity of the antenna portion 145.

[0047] [Case] Next, with reference to FIG. 5, the housing 10b and the installation of the power supply unit in the housing 10b will be described.

[0048] The housing 10b is made of a metal such as aluminum. Therefore, the housing 10b has high thermal conductivity and can efficiently dissipate the heat generated by the light source unit 100. This eliminates the need for a dedicated member for dissipating the heat generated by the light source unit 100, simplifying the configuration of the lighting device 1. As a result, the manufacturing costs of the lighting device can be reduced.

[0049] As shown in FIG. 5, when the power supply unit is inserted from the side opposite to the end surface portion 20a, the power supply unit is attached to the housing 10b.

[0050] 5, the housing 10b has openings M1A, M1B, M2A, and M2B. The openings M1A and M1B are disposed on the end surface 20a and the protruding portion 20, and open in the direction in which the end surface 20a faces and the lateral direction of the protruding portion 20. The openings M2A and M2B are disposed on the lateral sides of the protruding portion 20, and open in the lateral direction of the protruding portion 20. The openings M1A and M1B face each other across the protruding portion 20. The openings M2A and M2B face each other in the radial direction RD of the housing 10b. When the power supply unit is attached to the housing 10b, a pair of exposed portions R1 are exposed from the openings M1A and M1B, and a pair of exposed portions R2 are exposed from the openings M2A and M2B.

[0051] By exposing the synthetic resin exposed portion R1 from the metal housing 10b, electrical conduction between the power supply terminal portion 30 arranged on the exposed portion R1 and the housing 10b is prevented. That is, the power supply terminal portion 30 can ensure an electrical insulation distance that takes lightning surges into consideration. Furthermore, by forming the first engaging portion 21 on the synthetic resin exposed portion R2, it is easier to form the first engaging portion 21 than if it were formed on the metal housing 10b.

[0052] Next, the light source board 130 and the antenna unit 145 will be described in more detail with reference to Figs. 6 to 9. Figs. 6 and 7 also show the light source unit 100 with the light source cover 11 removed. The center line S in Fig. 7 is an imaginary line passing through the center of the light source board 130. The light source board 130 is attached to the housing unit 10 using, for example, screws.

[0053] In the examples of FIGS. 6 and 7 , the insertion portion 150 and the antenna portion 145 that passes through the insertion portion 150 are disposed closer to the edge than the center of the region of the light source substrate 130 where the light emitting elements 115 are disposed. This limits the range in which the light emitted from the light emitting elements 115 is blocked by the antenna portion 145. Note that a configuration in which the insertion portion 150 and the antenna portion 145 are disposed in the center of the region is also included in the present disclosure. Furthermore, the antenna portion 145 has a flat plate shape, and the insertion portion 150 has an elongated hole shape with a minor axis and a major axis into which the antenna portion 145 can be inserted. Furthermore, it is desirable that the length of the minor axis of the insertion portion 150 is shorter than the distance between the light emitting elements 115. This allows the insertion portion 150 to be provided on the light source substrate 130 without significantly changing the arrangement of the light emitting elements 115 on the light source substrate 130. Furthermore, since there is no need to significantly change the arrangement, it contributes to making the light source substrate 130 smaller and reducing unevenness in light emission due to variations in the spacing between the light emitting elements 115 .

[0054] Further, the minor axis of the insertion portion 150 is aligned along the radial direction of the light source substrate 130, and the major axis of the insertion portion 150 is aligned along a direction intersecting the radial direction of the light source substrate 130. Furthermore, as shown in FIG. 6 and the above-described FIG. 4, the top of the antenna portion 145 is disposed so as to protrude further from the surface of the light source substrate 130 than the top of the light emitting element 115. Here, the surface of the light source substrate 130 is the surface of the light source substrate 130 on which the light emitting element 115 is disposed.

[0055] Furthermore, on the surface of the light source substrate 130 on which the light emitting elements 115 are arranged, the plurality of light emitting elements 115 are arranged so as to surround the periphery of the antenna unit 145. This makes it possible to more effectively prevent the shadow of the antenna unit 145 from being cast on the light source cover 11. In the example of FIG. 6, around ten light emitting elements 115 are arranged so as to surround the periphery of the antenna unit 145. Furthermore, the first light emitting elements 115 and the second light emitting elements 115 described above may be arranged alternately at least near the position where the antenna unit 145 protrudes. This makes it possible to prevent the shadow from being cast on the light source cover 11 even in the light source unit 100 having a color adjustment function using the first and second light emitting elements 115.

[0056] Furthermore, in the region of the light source substrate 130 where the light emitting elements 115 are arranged, at least one light emitting element 115 is arranged in a region further toward the edge than the position where the antenna portion 145 protrudes. The above-described configuration will be further explained with reference to FIG. 8. FIG. 8 is an example of a cross-sectional view of the light source unit 100 showing the direction of light emitted from the light emitting element 115. FIG. 8(a) (left view of FIG. 8) shows the configuration of the light source unit 100 in which no light emitting element 115 is arranged in the region toward the edge, and FIG. 8(b) (right view of FIG. 8) shows the configuration of the light source unit 100 according to the present disclosure in which at least one light emitting element 115z is arranged in the region toward the edge. Here, the light emitting element 115z is an example of the light emitting element 115, and in FIG. 8(b), the light emitting element 115z arranged in the region toward the edge is illustrated to be distinguished from the other light emitting elements 115. 8(a) corresponds to the light source unit 100 according to the present disclosure, and the other components are described similarly. The object shown in the upper right corner of each figure represents the eye of the user of the lighting device 1.

[0057] The solid arrows in FIGS. 8(a) and 8(b) represent a portion of light emitted from the light-emitting element 115 or 115z. In the configuration of FIG. 8(a), light emitted from a certain light-emitting element 115a is blocked by the antenna unit 145a, causing the shadow of the antenna unit 145a to be cast on the light source cover 11a. That is, the dashed arrow in FIG. 8(a) represents light blocked by the antenna unit 145a, and the shadow of the antenna unit 145a is cast near the tip of the dashed arrow. In contrast, in the configuration of FIG. 8(b), light emitted from the light-emitting element 115z arranged in the edge region is reflected by the antenna unit 145 and overlaps the position of the shadow. Therefore, even if the antenna unit 145 is mounted so as to protrude from the surface of the light source substrate 130, the shadow of the antenna unit 145 can be prevented from being cast on the light source cover 11a. In addition, a paint that enhances the reflection of light from the light-emitting element 115 may be applied to the surface of the antenna unit 145.

[0058] [Light source cover] Next, the light source cover 11 will be described with reference to FIG.

[0059] The light source cover 11 has, for example, a substantially cylindrical shape with a lid. The light source cover 11 is made of, for example, a resin material such as acrylic (PMMA) or polycarbonate (PC). The light source cover 11 transmits light. The light source cover 11 may have a transparent structure without light diffusion properties, or a diffusing structure with light diffusion properties. For example, the light source cover 11 can be configured with a light diffusion function by forming a milky white light diffusion film by applying a resin containing a light diffusion material such as silica or calcium carbonate or a white pigment to the inner surface of the light source cover 11, or by forming minute irregularities on the light source cover 11. Forming minute irregularities on the surface of the light source cover 11 increases the coefficient of friction of the surface of the light source cover 11, making it less likely for a user's fingers to slip when attaching or detaching the light source unit to the lighting fixture 1, making the attachment and detachment operation easier. The diffusion density of light provided by the light source cover 11 may be uniform or non-uniform across the entire surface of the light source cover 11.

[0060] The light source cover 11 includes a first cover portion 111 and a second cover portion 112. The first cover portion 111 faces the light source portion 110. The first cover portion 111 transmits light. The first cover portion 111 is an example of a transmitting portion. The second cover portion 112 covers the side surface of the tube portion 22. The first cover portion 111 and the second cover portion 112 are integral. Therefore, in this embodiment, the second cover portion 112 transmits light. As the light source cover 11, which transmits light, covers the side surfaces of the light source portion 110 and the tube portion 22, part of the light from the light source portion 110 travels inside the second cover portion 112 and reaches the side surface of the tube portion 22. Furthermore, since the second cover portion 112 covers the side surface of the tube portion 22, the distance between the space between the light source portion 110 and the first cover portion 111 and the outside is increased, which makes it easier to prevent foreign matter from entering the space between the light source portion 110 and the first cover portion 111. Even if foreign matter enters the gap between the second cover portion 112 and the side surface of the tube portion 22, the foreign matter remains in the gap between the second cover portion 112 and the side surface of the tube portion 22 and is unlikely to reach the space between the light source portion 110 and the first cover portion 111. Note that when the first cover portion 111 and the second cover portion 112 both have a light diffusion function, the diffusion densities of the first cover portion 111 and the second cover portion 112 may be the same or different. For example, the diffusion density of the first cover portion 111 may be lower than the diffusion density of the second cover portion 112.

[0061] Next, with reference to FIGS. 4 and 9, the attachment of the light source cover 11 to the housing 10 will be described.

[0062] As shown in FIG. 9 , a first recess 107 is arranged on the side surface of the cylindrical portion 22 along the circumferential direction CD. In other words, the first recess 107 is provided on the side surface of the cylindrical portion 22 along the same direction as the end surface portion 20a. On the other hand, a first protrusion 113 is arranged on the second cover portion 112. In other words, the first protrusion 113 is provided on the surface of the second cover portion 112 that faces the side surface of the cylindrical portion 22. In the example of FIG. 9 , three first protrusions 113 are arranged at intervals in the circumferential direction CD. Note that the number of first protrusions 113 arranged on the second cover portion 112 is not limited to three. When the light source cover 11 is attached to the housing portion 10, the first protrusion 113 fits into the first recess 107. The first recess 107 and the first protrusion 113 form a snap fit. The light source cover 11 does not easily come off the housing portion 10. Therefore, the lighting fixture 1 can be easily attached and detached to the socket 50, and when the lighting fixture 1 is attached to a ceiling as shown in Figure 4, the light source cover 11 can be prevented from coming off the housing part 10 and falling.

[0063] Further, second recesses 108 are arranged on the side surface of the tube portion 22 along the first direction D1 or the second direction D2. In other words, the second recesses 108 are provided on the side surface of the tube portion 22 along a direction perpendicular to the end surface portion 20a. Meanwhile, second protrusions 114 are arranged on the second cover portion 112. In other words, the second protrusions 114 are provided on the surface of the second cover portion 112 that faces the side surface of the tube portion 22. In the example of FIG. 9 , one second protrusion 114 is arranged. Note that multiple second protrusions 114 may be arranged on the second cover portion 112. In this case, the side surface of the tube portion 22 is provided with second recesses 108 in a number corresponding to the number of second protrusions 114. When the light source cover 11 is attached to the housing portion 10, the second protrusions 114 fit into the second recesses 108. Therefore, rotation of the light source cover 11 relative to the housing portion 10 in the circumferential direction CD can be suppressed. As a result, removal of the lighting device 100 from the socket 50 becomes easier.

[0064] The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 9). However, the present invention is not limited to the above embodiments and can be implemented in various forms without departing from the spirit of the present invention. Furthermore, the components disclosed in the above embodiments can be modified as appropriate. For example, some of the components shown in one embodiment may be added to the components of another embodiment, or some of the components shown in one embodiment may be deleted from the embodiment.

[0065] Furthermore, the drawings mainly show each component in a schematic manner to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configuration of each component shown in the above embodiment is merely an example and is not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present invention. [Explanation of symbols]

[0066] 1. Lighting equipment 10 Housing 10a Power supply housing 10b housing 11 Light source cover (lighting cover, cover) 30 Power supply terminal (fixing pin) 40 Cap part 50 Socket (mounting object) 70 cases 71 Mounting material 100 Light source unit (lighting device) 110 Light source section 115, 115z Light-emitting element (light source) 125 Power Supply Board 130 Light source board 140 Wireless module board 145 Antenna section 150 Insertion hole (insertion part)

Claims

1. a light source substrate on which a plurality of light sources that emit light are arranged; a wireless module substrate provided with an antenna unit capable of wireless communication; a cover that covers the light source board and the wireless module board; and a fixing pin for fixing the device to an object to be attached, The wireless module substrate includes: the light source substrate is disposed on the opposite side to the surface on which the light sources are disposed, so as to overlap the light source substrate; The antenna unit is the antenna unit is disposed at a position closer to the edge than the center of an area of ​​the light source substrate where the light sources are arranged, so as to protrude from the wireless module substrate toward the surface where the light sources are arranged, and so that a top of the antenna unit protrudes at a position farther from the surface of the light source substrate than a top of the light source, In the illumination device, at least one of the light sources is arranged in an area of ​​the light source substrate where the light sources are arranged, which is located further to the edge side than the position where the antenna portion protrudes.

2. The lighting device according to claim 1 , wherein the plurality of light sources are arranged so as to surround the periphery of the antenna portion on the surface of the light source board on which the light sources are arranged.

3. an insertion portion through which the antenna portion is inserted is formed on the light source substrate; The antenna portion has a flat plate shape, The lighting device according to claim 1 , wherein the insertion portion has an elongated hole shape through which the antenna portion can be inserted.

4. the plurality of light sources includes a first light source having a first color temperature and a second light source having a second color temperature; 3. The lighting device according to claim 1, wherein the first light sources and the second light sources are alternately arranged at least in the vicinity of the position where the antenna portion projects.

5. The lighting device according to claim 1 or 2; a socket as the attachment object; A lighting fixture comprising: a case that is attached to a building and that holds and houses the socket and further houses the lighting device fixed to the socket.

Images