Illuminating device

Abstract

To provide an illuminating device that does not require wiring work.SOLUTION: An illuminating device comprises: a light source unit comprising a light source board and a plurality of light emitting elements; a power supply unit for supplying lighting power to the light source unit; a base 52 equipped with the light source unit on a front side, and equipped with the power supply unit on a back side; and a supporting member 81. The power supply unit comprises a power supply board 516. The supporting member 81 supports a conductive pin 517 electrically connecting the light source board and the power supply board.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to a lighting device in which a lamp is detachably attached to a fixture.

Background Art

[0002] There has been proposed a lighting device in which a light-emitting element is used as a light source of a lamp that is detachably attached to a fixture attached to an attachment surface such as a ceiling or a wall (for example, Patent Document 1). The lamp described in Patent Document 1 includes a plurality of semiconductor light-emitting elements, a long light-emitting element substrate on which the plurality of semiconductor light-emitting elements are mounted, a power supply unit that is a power supply source for the plurality of semiconductor light-emitting elements, a first surface to which the light-emitting element substrate is attached, and a second surface that is the opposite surface of the first surface and on which at least the power supply unit is provided. A long support member, a long light-transmitting cover that covers the plurality of semiconductor light-emitting elements on the first surface side and is attached to the support member, and a pair of end covers that cover openings at both ends in the longitudinal direction of the light-transmitting cover.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the lamp described in Patent Document 1, wiring from the power supply unit is connected to the light-emitting element substrate through an insertion hole (24c) provided in the support member (24). For this reason, manual wiring is required, and the work takes time. The present invention has been made in view of such circumstances, and an object thereof is to provide a lighting device that does not require wiring work.

Means for Solving the Problems

[0005] To solve the above problems, a lighting device according to an aspect of the present invention includes a light source unit including a light source substrate and a plurality of light emitting elements, a power supply unit that supplies lighting power to the light source unit, a base on which the light source unit is mounted on the front side and the power supply unit is mounted on the back side, and a support member. The power supply unit has a power supply substrate, and the support member supports conductive pins that electrically connect the light source substrate and the power supply substrate.

Effects of the Invention

[0006] According to the present invention, wiring work becomes unnecessary due to the conductive pins.

Brief Description of the Drawings

[0007]

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Embodiments for Carrying Out the Invention

[0008] <Summary> A lighting device according to one aspect includes a light source unit including a light source substrate and a plurality of light emitting elements, a power supply unit that supplies lighting power to the light source unit, a base that mounts the light source unit on the front side and mounts the power supply unit on the back side, and a support member. The power supply unit has a power supply substrate, and the support member supports a conductive pin that electrically connects the light source substrate and the power supply substrate. In a lighting device according to another aspect, the light source substrate has a conductive plate that is electrically connected to the conductive pin, and the support member supports the conductive pin disposed between the power supply substrate and the conductive plate. In a lighting device according to another aspect, the conductive pin is provided on the light source substrate, and the support member supports the conductive pin disposed between the power supply substrate and the light source substrate. In the lighting device according to another aspect, the conductive pins consist of two, the two conductive pins extend in parallel, and the support member has a pair of cylindrical portions through which the two conductive pins are inserted and a connecting portion connecting the pair of cylindrical portions. In the lighting device according to another aspect, the support member has a mounting portion for mounting on the power supply board, and the mounting portion has a convex portion that fits into a through hole or a recess of the power supply board. In the lighting device according to another aspect, the mounting portion has a flat surface that abuts against the power supply board, and the convex portion is provided on the flat surface. The lighting device according to the specification includes a light source unit including a plurality of light emitting elements, a power supply unit that supplies lighting power to the light source unit, and a base on which the light source unit is mounted on the front side and the power supply unit is mounted on the back side. The light source unit and the power supply unit are electrically connected by conductive pins that pass through the base. In the lighting device according to the specification, the conductive pins are provided on a power supply board of the power supply unit, and the light source unit includes a conductive plate having one end connected to the conductive pins and the other end connected to a power supply path that mounts the light emitting elements and supplies lighting power. Thereby, the electrical connection between the light source unit and the power supply unit can be easily made. In the lighting device according to the specification, the conductive plate includes a high-potential-side high-conductive plate and a low-potential-side low-conductive plate, and the high-conductive plate and the low-conductive plate connect the conductive pins and the power supply path at the shortest distance. Thereby, the conductive plate can be made smaller. In the lighting device according to the specification, the high-conductive plate and the low-conductive plate have the same shape when viewed from the extending direction of the conductive pins. Thereby, the conductive plate can be configured with one type and can be implemented at low cost. In the lighting device according to the specification, the power supply board is separated from the base, and the region between the power supply board and the base is supported by a support member for the conductive pins. Thereby, the occurrence of deformation of the conductive pins can be reduced.

[0009] <Embodiment> 1. Overall Configuration of Lighting Device The lighting device 1 is a long LED base light that is attached to an attachment surface such as a ceiling. As shown in FIG. 1, the lighting device 1 includes a fixture 3 attached to the attachment surface and a lamp unit 5 detachably attached to the fixture 3. In the lighting device 1, the side that emits light is referred to as the front side, and may simply be referred to as the "front side". The side where the attachment surface exists in the lighting device 1 is referred to as the back side, and may simply be referred to as the "back side". The longitudinal direction of the long lighting device 1 may simply be referred to as the "longitudinal direction", and the short side direction of the lighting device 1 may simply be referred to as the "short side direction".

[0010] 2. Fixture This will be mainly described with reference to FIG. 2. The fixture 3 is fixed to the attachment surface by, for example, a suspension bolt or the like (not shown). The fixture 3 includes a fixture-side base 30 and a fixture-side end cover 32. The fixture 3 includes a terminal block 34 for supplying commercial power to the lamp unit 5 and a pair of fixture-side mounting tools 36 for detachably mounting the lamp unit 5 on the surface of the fixture-side base 30.

[0011] The fixture-side base 30 is formed by bending, for example, a single metal plate, and has a recess 301 that houses the back side portion of the lamp unit 5. The recess 301 has a "C" shape that opens to the front side with an outward expansion in the cross section. A plurality of through holes 305 (see FIG. 1) for suspension bolts, insertion of power supply side cables, fixing of the terminal block 34 and the fixture-side mounting tools 36, fixing of the fixture-side end cover, etc. are provided in the back plate 303 of the fixture-side base 30.

[0012] 3. Lamp unit 5 (1) Overall As shown in FIGS. 3 and 4, the lamp unit 5 includes at least a light source unit 50 having an LED element (503), which is an example of a light-emitting element, as a light source, a power supply unit 51 that supplies lighting power to the light source unit 50, and a lamp unit-side base 52 that mounts the light source unit 50 and the power supply unit 51 on the front and back. The luminaire 5 includes a housing 55 for accommodating a light source unit 50. Here, the luminaire-side base 52 is labeled with "luminaire-side" to distinguish it from the fixture-side base 30, and corresponds to an example of the "base" of the present invention. Note that the luminaire-side base 52 is a member that constitutes the housing 55 (see FIG. 1). The luminaire 5 includes a fixture 59 for attaching the self-device (specifically, the luminaire-side base 52) to the fixture 3. Hereinafter, each part will be described.

[0013] (1-1) Housing As shown in FIG. 1, the housing 55 has a long box shape in the longitudinal direction. The housing 55 includes a luminaire-side base 52 that mounts the light source unit 50 on the front side and the power supply unit 51 on the back side, a light-transmissive cover 53 that covers the light source unit 50 from the front side, and a luminaire-side end cover 54 that covers the longitudinal ends of the luminaire-side base 52 and the light-transmissive cover 53.

[0014] (1-1-1) Luminaire-side base The luminaire-side base 52 has a light source mounting function for mounting the light source unit 50 (light source substrate 501). The luminaire-side base 52 constitutes a power supply mounting function for mounting the power supply unit 51. The luminaire-side base 52 constitutes an end cover fixing function for fixing the luminaire-side end cover 54. The luminaire-side base 52 constitutes a light-transmissive cover fixing function for fixing the light-transmissive cover 53. As shown in FIG. 5, the luminaire-side base 52 has a flat portion 521 and a V-shaped portion 522 that extends outward from both ends in the short direction of the flat portion 521 to the front side and then bends to the back side. Note that the portion extending to the front side of the V-shaped portion 522 is referred to as a front extension portion 523, and the portion extending to the back side is referred to as a back extension portion 524. Note that the luminaire-side base 52 is made of, for example, extruded resin.

[0015] The lamp-side base 52 has a groove-forming portion 525 on the flat portion 521 that forms a groove with the surface of the flat portion 521. Note that the groove-forming portion 525 is provided over the entire length of the flat portion 521. The groove-forming portion 525 extends in a "T" shape from the flat portion 521 to the front side. On both sides of the protruding ridge portion that protrudes to the front side of the groove-forming portion 525, it is recessed in the short-side direction. There are four groove-forming portions 525 spaced apart in the short-side direction. The light source substrate 501 is inserted in the longitudinal direction between the groove-forming portion 525 located at the end in the short-side direction and the inner groove-forming portion 525. As a result, the light source substrate 501 is locked by the groove-forming portion 525. In this way, the groove-forming portion 525 and the flat portion 521 constitute a light source mounting function for mounting the light source unit 50.

[0016] As shown in Fig. 6(c), the lamp-side base 52 has grooves 526 that extend from the center in the short-side direction to the inside in the longitudinal direction at both ends in the longitudinal direction. The central portion of the groove 526 in the extending direction is narrowed. At the tip portion 526a of the groove 526, as shown in Fig. 6(b), the pin-shaped portion 547b of the lamp-side end cover 54 is fitted. As a result, the lamp-side end cover 54 is fixed to the lamp-side base 52. In this way, the groove 526 and the pin-shaped portion 547b constitute an end cover fixing function.

[0017] (1-1-2) Translucent cover As shown in Fig. 5, the translucent cover 53 is arranged opposite to the light source unit 50 and has a U-shaped portion 531 that is U-shaped with a rearward expansion in the cross section, and a V-shaped portion 533 that extends in a "V" shape from the open-side end of the U-shaped portion 531. The V-shaped portion 533 is fitted outside the V-shaped portion 522 of the lamp-side base 52. The fitting is performed by sliding the translucent cover 53 from the longitudinal end with respect to the lamp-side base 52. In this way, the V-shaped portion 533 of the translucent cover 53 and the V-shaped portion 533 of the lamp-side base 52 constitute a translucent cover fixing function.

[0018] (1-1-3) Lamp-side end cover The lamp-side end cover 54 has a plate-like portion 541 that covers the end portion in a state where the translucent cover 53 is attached to the lamp-side base 52 as shown in Fig. 6(a), an inner extension portion 543 that stands upright from the plate-like portion 541 and abuts against the inner peripheral surfaces of the lamp-side base 52 and the translucent cover 53 as shown in Fig. 5(b), an outer extension portion 545 that stands upright from the plate-like portion 541 and fits into the V-shaped portion 522 (between the front extension portion 523 and the back extension portion 524) of the lamp-side base 52, and a back extension portion 547 that stands upright from the plate-like portion 541 and is inserted between the two groove-forming portions 525 on the central side of the lamp-side base 52. As shown in Figs. 6(a) and 6(b), the back extension portion 547 has a rib portion 547a for reinforcement and positioning, and a pin-like portion 547b that extends to the back side. The pin-like portion 547b fits into the tip portion 526a of the groove 526 of the lamp-side base 52 (see Fig. 6(c)). When fitting, the pin-like portion 547b is elastically deformed.

[0019] (1-2) Light source unit As shown in Fig. 4, the light source unit 50 is long. As shown in Fig. 6, the light source unit 50 includes a long light source substrate 501 and a plurality of LED elements 503. Here, the light source unit 50 includes four light source substrates 501 as shown in Fig. 4, and two adjacent light source substrates 501 in the longitudinal direction are provided in two rows. The light source substrate 501 has a wiring pattern (not shown). The wiring pattern mounts the LED elements 503 and constitutes a power supply path for supplying lighting power to the mounted LED elements 503.

[0020] As shown in Fig. 9(b), the light source unit 50 includes a conductive plate 505 with one end connected to the conductive pin 517 of the power supply unit 51 and the other end connected to the power supply path. Here, there are two conductive plates 505, a high-conductive plate 505H connected to the high-potential-side high-conductive pin 517H and a low-conductive plate 505L connected to the low-potential-side low-conductive pin 517L. When there is no need to distinguish between the high-conductive plate 505H and the low-conductive plate 505L, it is simply described as the conductive plate 505. The conductive plate 505 is formed, for example, by punching a thin metal plate. As shown in Fig. 9(b), the conductive plate 505 has a pin-side connection portion 505a that connects to the conductive pin 517, a substrate-side connection portion 505b that connects to the connection terminals on the light source substrate 501, and a connection portion 505c that connects the pin-side connection portion 505a and the substrate-side connection portion 505b. Here, the connection terminals are the highest potential side end and the lowest potential side end in the power supply path constituted by the four light source substrates 501.

[0021] Here, as shown in Fig. 9(b), the pin-side connection portion 505a is located outside the light source substrate 501 in the short side direction. Specifically, as also shown in Fig. 5(a), the pin-side connection portion 505a is arranged on the front side of the front extension portion 523 and is inclined with respect to the light source substrate 501. Since the lamp-side base 52 here is provided with the groove forming portion 525, as shown in Fig. 5(a), a part of the connection portion 505c is bent to the front side so as to straddle the groove forming portion 525. As shown in Fig. 9(b), the connection portion 505c is in an "L" shape in the high conductive plate 505H and in a "U" shape in the low conductive plate 505L.

[0022] As shown in Fig. 9(b) and Fig. 6(a), the light source unit 50 includes a connection conductive plate 507 that electrically connects four light source substrates 501. There are three connection conductive plates 507. One connects the light source substrates 501 adjacent to each other in the longitudinal direction as shown in Fig. 9(b), and the remaining two connect the light source substrates 501 adjacent to each other in the short side direction at both ends in the longitudinal direction (only one end side is shown in the figure) as shown in Fig. 6. The three connection conductive plates 507 here have the same configuration. As shown in Fig. 9(a), the connection conductive plate 507 has two connection portions 507a, 507b that connect to the light source substrate 501, and a connection portion 507c that connects the two connection portions 507a, 507b in an arch shape (erects).

[0023] (1 - 3) Power supply unit It will be mainly described with reference to Figs. 7 and 8. The power supply unit 51 generates lighting power from the power received from the commercial power supply and supplies the lighting power to the light source unit 50. The power supply unit 51 includes a power supply circuit section 511 for generating lighting power, and a power supply case 512 that supports the power supply circuit section 511 and is fixed to the base 52 on the lamp side. When the power supply case 512 and the base 52 on the lamp side are made of metal, the power supply unit 51 includes insulating sheets 513 and 514 for the power supply circuit section 511.

[0024] (1-3-1) Power supply circuit section As shown in FIG. 8, the power supply circuit section 511 has a plurality of electronic components 515 that constitute a circuit, and a power supply board 516 on which the electronic components 515 are mounted. Here, the electronic components 515 are mounted on the surface of the power supply board 516. The power supply circuit section 511 includes conductive pins 517 on the power supply board 516 for supplying lighting power to the light source unit 50. The conductive pin on the high potential side is designated as the high conductive pin 517H, and the conductive pin on the low potential side is designated as the low conductive pin 517L. When there is no need to distinguish, it is simply described as the conductive pin 517. The conductive pin 517 extends straight on the front side. The conductive pin 517 is constituted by a metal rod. As shown in FIG. 9(a), the conductive pin 517 passes through the through hole of the base 52 on the lamp side and is connected to the conductive plate 505 of the light source unit 50. The through hole of the base 52 on the lamp side is formed at a position where the conductive pin 517 can be inserted as it is when the power supply board (power supply circuit section 511) 516 is brought close to the base 52 on the lamp side. Thereby, the attachment of the power supply unit 51 to the base 52 on the lamp side can be automated.

[0025] One end of the power supply board 516 is connected to the other ends of two cables 571 and 573 that are connected to a connector 56. The two cables 571 and 573 are fixed to the bent piece 512p of the power supply case 512 shown in FIG. 7 via a bundling tool 579 shown in FIG. 5(a). In FIGS. 1, 4, 7, and 8, the illustration of the middle part of the cables 571 and 573 is omitted. The connector (female connector) 56 is connected to a connector (not shown: male connector) connected to the terminal block 34 of the appliance 3 shown in FIG. 2.

[0026] (1-3-2) Power supply case As shown in Fig. 8, the power supply case 512 has a rectangular box shape with an open front side. As shown in Fig. 9, the power supply case 512 has a "C"-shaped groove portion in the top plate portion 512a, and has two or more bending pieces 512b and 512c whose inner sides are bent toward the front side. The bending pieces 512b and 512c support the power supply substrate 516 from the back side. In Fig. 8, a part of the side plate portion is cut out so that the bending piece 512b can be seen. The power supply case 512 has a "C"-shaped groove portion straddling the top plate portion 512a and the side plate portion 512d, and has a bending piece 512e that bends inside thereof and extends parallel to the top plate portion 512a. A screw hole 512f (see Fig. 8) is provided in the bending piece 512e. The power supply substrate 516 is supported from the back side by the bending pieces 512b, 512c, and 512e, and is fixed to the power supply case 512 by a screw 71 that is screwed into the screw hole 512f.

[0027] As shown in Fig. 8, the power supply case 512 has bending pieces 512i and 512j that bend outward at the open side ends of the side plate portions 512g and 512h facing each other in the longitudinal direction, and through holes 512k and 512m are formed in the bending pieces 512i and 512j. As shown in Figs. 7 and 8, an auxiliary plate 518 having screw holes 518n is provided at positions corresponding to the through holes 512k and 512m in the bending pieces 512i and 512j. A screw 72 shown in Fig. 9(b) is inserted through the through holes 512k and 512m of the lamp fixture side base 52 and the bending pieces 512i and 512j from the front side and screwed into the screw holes 518n. Thereby, the power supply unit 51 is fixed to the lamp fixture side base 52.

[0028] In the power supply case 512, the ground terminal 577 of the cable 575, one end of which is connected to the connector 56, is connected to the bending piece 512p of one of the side plate portions 512g and 512h facing each other in the longitudinal direction. As shown in FIG. 8, the power supply case 512 has a notch 512q at the connecting portion between one of the side plate portions 512g and 512h facing each other in the longitudinal direction and the top plate portion 512a. The convex portion 561 of the connector 56 fits into the notch 512q (see FIG. 9(a)). Thereby, the connector 56 is attached to the power supply case 512 and positioned in the short side direction.

[0029] (1-3-3) Connector The connector 56 is detachably connected to the connector on the appliance 3 side. The connector 56 here is a female type as shown in FIGS. 7 and 8 and is connected to three cables 571, 573, and 575. The connector 56 has a main body portion 560 for connecting to the three cables 571, 573, and 575, and a convex portion 561 that protrudes outward in the thickness direction from the front or back surface of the main body portion 560. The convex portion 561 is for fixing the connector on the appliance side and has a pair of locking pieces 561a. Note that the side of the connector 56 that connects to the connector on the appliance side is taken as one end in the longitudinal direction. The other end in the longitudinal direction of the convex portion 561 of the connector 56 fits into the notch 512q of the power supply case 512. (1-3-4) Insulating Sheet The insulating sheet 513 is disposed between the power supply circuit portion 511 and the power supply case 512, and the insulating sheet 514 is disposed between the power supply circuit portion 511 and the lamp fixture side base 52. The insulating sheet 514 has a through hole 514a for the conductive pin 517 and the like.

[0030] (2) Assembly of the Power Supply Unit The power supply unit 51 is assembled through an arrangement step of arranging the power supply case 512 that supports and houses the power supply circuit portion 511 above the mounting position of the lamp fixture side base 52, a contact step of bringing the power supply case 512 close to and into contact with the lamp fixture side base 52 so that a pair of conductive pins 517 of the power supply unit 51 pass through the through holes of the lamp fixture side base 52 and the through holes of the conductive plate 505, and a connection step of electrically connecting the conductive pins 517 led out from the through holes of the conductive plate 505 and the conductive plate 505 with solder or the like. Note that the step of fixing the power supply case 512 with the screw 72 may be performed between the abutting step and the connecting step, or may be performed after the connecting step. The connection between the conductive pin 517 and the conductive plate 505 is made by passing a thin metal plate 506 with a through hole (see (c) of FIG. 10), for example, a copper washer or the like, through the conductive pin 517 and soldering in a state where the washer and the conductive plate 505 are in contact. Thus, since the electrical connection between the power supply unit 51 and the light source unit 50 is made by the conductive pins 517, the conventional wiring arrangement is not required. As a result, automatic assembly by a robot or the like becomes possible.

[0031] Although the embodiments have been described above, the present invention is not limited to these embodiments, and for example, the following modifications may be made. Also, combinations of embodiments, modifications, and modifications may be made. In addition, examples not described in the embodiments or modifications, and design changes within the scope not departing from the gist are also included in the present invention.

[0032] <Modification> 1. Conductive pin (1) Configuration The conductive pin 517 of the embodiment only needs to be able to supply lighting power, and a metal, a resin rod provided with a metal foil or a metal coat, or the like can be used. Also, the shape of the conductive pin or the like is not particularly limited. In the embodiment, soldering is used for the connection between the conductive pin 517 and the conductive plate 505. However, for example, the tip of the conductive pin may be a threaded portion, and after passing through the through hole or the notch of the conductive plate, it may be fixed with a nut (for example, metal) that can be energized. In this case, automation is also possible. In the embodiment, two conductive pins 517 are provided on the power supply substrate 516 in proximity. However, for example, they may be provided at both ends in the longitudinal direction or the short side direction of the power supply substrate. However, considering the automation of assembly, it is preferable that the extending directions of the two conductive pins are parallel.

[0033] (2) Support member The conductive pin 517 of the embodiment extends in an exposed state (a state not supported by other members) from the power supply substrate 516. However, for example, the conductive pin 517 may be supported by a support member. An example using the support member 81 will be described with reference to FIG. 10. As shown in FIGS. 10(a) and 10(b), the support member 81 includes a pair of cylindrical portions 811 through which the conductive pin 517 is inserted, and a connecting portion 813 that connects the pair of cylindrical portions 811. The support member 81 has a mounting portion for mounting on the power supply substrate 516. The mounting portion is constituted by a convex portion 815 that fits into a through hole or a recess (not shown) of the power supply substrate 516. Preferably, there are two or more convex portions 815, which can restrict rotation around the extending direction of the conductive pin 517.

[0034] Here, the convex portion 815 is provided on the flat surface 813a of the connecting portion 813. The flat surface 813a is formed at the end on the power supply substrate 516 side of the pair of cylindrical portions 811, and the opening of the cylindrical portion 811 exists on the flat surface 813a. The flat surface 813a abuts against the power supply substrate 516. Thereby, the support member 81 can be provided on the power supply substrate 516 in a stable state. By using the support member 81, even when the power supply substrate 516 and the conductive plate 505 are separated, it is possible to prevent an unreasonable load from acting when making electrical connection to the conductive pin 517 or the conductive plate 505. As shown in FIGS. 10(a) and 10(c), the pair of cylindrical portions 811 has a covered cylindrical shape with the light source unit side blocked, and a through hole 811a for the conductive pin is formed in the lid portion. Note that the size of the through hole 811a corresponds to the thickness of the conductive pin 517.

[0035] The assembled state of the lighting fixture including the support member 81 will be described with reference to FIG. 10(c). Here, the conductive plate 505 connected to the conductive pin 517 is provided on the surface of the inclined front extending portion 523 of the lighting fixture side base 52. The lid portion of the cylindrical portion 811 has an inclined surface corresponding to the inclined conductive plate 505. The height (length) of the cylindrical portion 811 of the support member 81 corresponds to the distance between the power supply substrate 516 and the conductive plate 505. Thereby, the conductive pin 517 and the conductive plate 505 can be connected in a natural state (a state in which no deformation or the like occurs). A through hole 523a for the support member 81 (cylindrical portion 811) is formed in the front extension portion 523 of the lamp-side base 52.

[0036] Here, the support member 81 integrally has a pair of cylindrical portions 811, but it may be supported by a support member having one cylindrical portion for one conductive pin. The support member 81 supports the conductive pin 517 in the entire region between the power supply substrate 516 and the conductive plate 505, but it may support the conductive pin in a partial region between the power supply substrate and the conductive plate.

[0037] (3) Mounting position In the embodiment, the conductive pin 517 is provided on the power supply substrate 516. However, for example, it may be provided on the lamp-side base, or may be provided on the light source substrate or the conductive plate. When provided on a metal lamp-side base, it can be implemented by fixing it to the lamp-side base via an insulating ring or the like. When provided on the light source substrate, it can be directly connected without passing through the conductive plate. When provided on a thin conductive plate, it can be implemented by providing a reinforcing portion.

[0038] (4) Number In the embodiment, two conductive pins 517H and 517L are used. However, depending on the connection form of the light-emitting element (light source substrate), three or more conductive pins may be used. For example, when four power supply substrates are arranged in two rows (the same arrangement as in the embodiment) and power supply for lighting is independently supplied to the light source substrates in each row, three or four conductive pins may be used.

[0039] 2. Connection plate In the embodiment, the high-conductivity plate 505H and the low-conductivity plate 505L have different shapes. However, as shown in FIG. 11, by making the distance between the high-potential side connection terminal 1509H of the light source substrate 1501 and the high-conductivity pin 517H substantially the same as the distance between the low-potential side connection terminal 1509L and the low-conductivity pin 517L, the shapes of the high-conductivity plate 1505H and the low-conductivity plate 1505L can be made the same. In this case, by making the distance between the connection terminal 1509 of the light source substrate 1501 and the conductive pin 517 the shortest distance, the area of the conductive plate can be reduced. Also, since the length of the conductive plate 1505 (connecting portion) is short, the amount of deformation due to warping or the like can be suppressed.

[0040] 3. Power Supply Unit (1) Overall In the embodiment, the electronic component 515 is mounted on the power supply substrate 516 on the light source unit 50 side, but the electronic component may be mounted on the side opposite to the light source unit. The power supply substrate 516 is fixed to the power supply case 512. However, for example, it may be fixed to the base on the lamp side and covered with a power supply case (cover).

[0041] (2) Power Supply Case The following shows a modified example of the power supply case 512. In the embodiment, the power supply case 512 has a notch portion 512q that fits with the other end in the longitudinal direction of the convex portion 561 of the connector 56. However, for example, as shown in FIG. 12(a), the power supply case 1512 may have a bent piece 1512r that protrudes from the top plate portion 1512a into the notch portion 1512q and bends to the front side. The bent piece 1512r is configured to fit (enter) into the through hole 561b existing in the convex portion 561 of the connector 56 as shown in FIG. 12(b) when the connector 56 is attached to the power supply case 1512. That is, the dimension of the bent piece 1512r in the front-back direction corresponds to the dimension of the through hole 561b in the front-back direction. Or, the dimension (width) of the bent piece 1512r in the short-side direction corresponds to the dimension of the through hole 561b in the width direction. Thereby, the connector 56 is positioned in the front-back direction with respect to the power supply case 1512. Note that the positioning in the short-side direction is performed by fitting the convex portion 561 into the notch portion 1512q.

[0042] (3) Connector As shown in Fig. 13(a), the connector 2056 may have a recessed portion 2563 on the surface opposite to the surface where the convex portion 2561 is formed, and a T-shaped convex rib portion 2565 extending in a T-shape from the recessed portion 2563. The T-shaped convex rib portion 2565 has a standing portion 2565a that stands up from the recessed portion 2563 and extends in the longitudinal direction, and overhanging portions 2565b that project from both sides in the short direction from the standing tip of the standing portion 2565a and extend in the longitudinal direction. In the case of the connector 2056 having the above configuration, as shown in Fig. 13(b), it can be attached to the power supply case 2512 by using the T-shaped convex rib portion 2565 on the top plate portion 2512a of the power supply case 2512.

[0043] That is, as shown in Fig. 13(c), the attachment region of the top plate portion 2512a of the power supply case 2512 is bent to the back side, a groove portion 2512t is provided in the bent portion 2512s, the recessed portion 2563 of the connector 2056 is aligned with the bent portion 2512s of the power supply case 2512, the T-shaped convex rib portion 2565 is inserted into the insertion port 2512u of the groove portion 2512t of the power supply case 2512, and then the connector 2056 is moved in the longitudinal direction, so that the T-shaped convex rib portion 2565 engages with the groove portion 2512t.

[0044] In this case, as shown in Fig. 13, even when the power supply case 2512 (see Fig. 13(b)) is longer than the power supply case 512 (see Fig. 13(a)) described in the embodiment, the connector 2056 can be attached at a location where the distance from the longitudinal end (which is "L1" in the figure) is substantially the same in the power supply cases 512 and 2512. When changing the total luminous flux of the lighting fixture 5 by changing the number of LED elements 503 mounted on the light source unit 50, etc., it is necessary to change the size of the power supply unit accordingly. Even in such a case, the same cable 57 can be used regardless of the size (length) of the power supply case.

[0045] 4. Base on the lighting fixture side (1) Support of the light source unit In the embodiment, in order to fix the light source unit 50, a pair of groove forming parts 525 were used, but the light source unit may be fixed by other methods. As other methods, screwing means such as screws, fastening means such as rivets, etc. can be used. Further, the base on the lamp side may have a through hole along the longitudinal direction of the light source unit, and a groove forming body corresponding to the groove forming part of the embodiment may protrude from the through hole to the light source mounting area. In the embodiment, two pairs of groove forming parts 525 are provided to support the light source substrate 501 in two rows. However, when supporting the light source substrate in two rows, three groove forming parts may be used to support both light source substrates with the groove forming part located at the center in the short side direction.

[0046] (2) End shape In the embodiment, the end face in the longitudinal direction was flat. However, for example, as shown in FIG. 14, in a region including a mounting area for mounting the light source unit (light source substrate) between a pair of groove-shaped parts 3525, it may be formed in a "V" shape such that the inner side in the longitudinal direction is recessed. The recessed part 3528 is configured such that the light source substrate is inserted (guided) into the mounting area along the inclined surface of the recessed part. That is, the most recessed part of the "V" shape is at approximately the central position in the thickness direction of the light source substrate.

[0047] (3) Through hole for conductive pin In the embodiment, a through hole is used to insert the conductive pin through the front and back, but for example, a groove penetrating in the thickness direction and extending in the short side direction may be used. In this case, the conductive pin may be inserted in the thickness direction of the base on the lamp side, or may be inserted from the outer side to the inner side in the short side direction.

[0048] (4) Groove for the end cover on the lamp side In the embodiment, the groove 526 into which the pin-shaped portion 547b of the lamp-side end cover 54 fits is configured such that the center in the extending direction (longitudinal direction) is narrowed. However, for example, the width (dimension in the short-side direction) may be constant as in the groove 4526 shown in FIG. 15. That is, the width may be constant regardless of the position in the longitudinal direction of the lamp-side base 4052. Thereby, even if the length of the lamp-side base 4052 varies due to tolerances or the like, the pin-shaped portion 547b of the lamp-side end cover 54 can fit into the groove 4526. Here, the width being constant means that the width is constant in the region where the pin-shaped portion 547b may fit, taking into account tolerances and the like. For example, as shown in FIG. 15, the entrance portion 4526a of the groove 4526 may be configured to have an end flare. Note that by having the end flare, the pin-shaped portion 547b is smoothly guided to the inside of the groove 4526.

Description of Reference Numerals

[0049] 1 Lighting device 3 Appliance 5 Lamp 50 Light source unit 51 Power supply unit 52 Lamp-side base (base) 505 Conductive plate 517 Conductive pin

Claims

1. a light source unit including a light source substrate and a plurality of light emitting elements; A base having the light source unit mounted on a front side thereof; A light-transmitting cover disposed opposite the light source unit; a lamp side end cover that covers the longitudinal ends of the base and the translucent cover; Equipped with The base has grooves extending inwardly in the longitudinal direction at both ends thereof, The lamp side end cover has a pin-shaped portion that fits into the groove. Lighting equipment.

2. The groove is narrowed toward the center in the extension direction.

10. The lighting device of claim 1.

3. The groove is configured to have a constant width in the short side direction.

10. The lighting device of claim 1.

4. When the pin-shaped portion is fitted into the groove, the pin-shaped portion is elastically deformed. The lighting device according to any one of claims 1 to 3.

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