JP2023148091A - Light source unit, lamp and lighting device - Google Patents

Abstract

To provide a light source unit, a lamp and a lighting device capable of improving the degree of freedom for design without shielding light from a light emitting element, even when a connection member connecting adjacent substrates is arranged near the light emitting element.SOLUTION: A light source unit comprises: a plurality of substrates having a conductive layer laid on one surface, and a light emitting element electrically connected and mounted to the conductive layer; and a connection member that electrically connects the plurality of substrates via the conductive layer. The connection member is a flexible braided conductor formed by braiding conductive wires, one end part thereof is electrically connected to the conductive layer of one adjacent substrate, and the other end part thereof is electrically connected to the conductive layer of the other adjacent substrate.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a light source unit, a lamp, and a lighting device.

2. Description of the Related Art Light source units having a plurality of substrates on which light emitting elements such as LEDs are mounted are conventionally known. For example, Patent Document 1 discloses a configuration in which a connector is mounted on each LED board, and adjacent LED boards are electrically connected by connecting the connectors to each other.

Patent No. 5701682

In Patent Document 1, components such as a connector and electric wires that connect the connector to a board have a predetermined height from the surface of the board, so the presence of the components may block light from the light emitting element. Therefore, in a lighting device including the substrate, a shadow may appear on the light emitting surface. In order to prevent the component parts from blocking light from the light emitting element, the component parts must be placed away from the light emitting element, which limits the degree of freedom in design.

The present disclosure has been made in order to solve the above-mentioned problems, and even if a connecting member that connects adjacent substrates is placed near a light emitting element, light from the light emitting element is not blocked, and the design is improved. An object of the present invention is to provide a light source unit, a lamp, and a lighting device that can improve the degree of freedom.

A light source unit according to the present disclosure includes a plurality of substrates having a conductive layer laid on one surface and a light emitting element mounted and electrically connected to the conductive layer; a connecting member that electrically connects through the layers, the connecting member being a flexible braided conductor formed by weaving conductive wires, one end of which is connected to one of the adjacent substrates. and the other end thereof is electrically connected to the conductive layer of the other adjacent substrate.

The lamp according to the present disclosure includes the light source unit, a pedestal portion having an elongated and flat base portion and on which the light source unit is provided, and a transparent pedestal portion attached to the pedestal portion so as to cover the light emitting element. It is equipped with a light-sensitive cover.

A lighting device according to the present disclosure includes the above-mentioned lamp and a fixture to which the lamp is detachably attached.

According to the present disclosure, since adjacent substrates are electrically connected using a connecting member made of a braided conductor, even if the connecting member is placed near a light emitting element, the thin braided conductor prevents light from the light emitting element. There is no obstruction, and the degree of freedom in design can be improved.

1 is a plan view showing an example of a light source unit according to Embodiment 1. FIG. FIG. 2 is an enlarged view of section A shown in FIG. 1. FIG. FIG. 2 is a side view of the light source unit shown in FIG. 1. FIG. 4 is an enlarged view of section B shown in FIG. 3. FIG. FIG. 3 is an explanatory diagram showing a connection member of the light source unit according to the first embodiment. 7 is a plan view showing a modification of the light source unit according to Embodiment 1. FIG. 7 is an enlarged view of section C shown in FIG. 6. FIG. 7 is an explanatory diagram showing an example of a state in which the positions of adjacent substrates are shifted from the state shown in FIG. 6. FIG. FIG. 9 is an explanatory diagram showing the connection member in the state shown in FIG. 8; 7 is an explanatory diagram showing a different example of a state in which the positions of adjacent substrates are shifted from the state shown in FIG. 6. FIG. 11 is an enlarged view showing the connecting member in the state shown in FIG. 10. FIG. 1 is a perspective view showing a configuration example of a lighting device in Embodiment 1. FIG. 13 is an exploded perspective view of the lighting device shown in FIG. 12. FIG. 1 is a perspective view showing a lamp in Embodiment 1. FIG. FIG. 2 is an exploded perspective view of the lamp according to the first embodiment.

Embodiments will be described below with reference to the drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will be omitted or simplified as appropriate. Furthermore, the shape, size, arrangement, etc. of the configurations shown in each figure can be changed as appropriate within the scope of the present invention.

Embodiment 1.
First, the light source unit 1 according to the first embodiment will be explained with reference to FIGS. 1 to 11. FIG. 1 is a plan view showing an example of a light source unit 1 according to the first embodiment. FIG. 2 is an enlarged view of section A shown in FIG. FIG. 3 is a side view of the light source unit 1 shown in FIG. 1. FIG. 4 is an enlarged view of section B shown in FIG. 3. FIG. 5 is an explanatory diagram showing the connection member 15 of the light source unit 1 according to the first embodiment.

(Light source unit 1)
The light source unit 1 is used as a part of a lamp 101 that constitutes a lighting device 100, which will be described later. As shown in FIGS. 1 to 4, the light source unit 1 includes a plurality of substrates 10 and 11, and a connection member 15 that connects the plurality of substrates 10 and substrates 11. The substrate 10 and the substrate 11 have a conductive layer 12 laid down on one plane, a light emitting element 13 mounted and connected to the conductive layer 12, and a copper foil pad 14. Note that the light source unit 1 is not limited to the illustrated structure in which the two substrates 10 and 11 are arranged in parallel in the longitudinal direction X, but may also be in a structure in which three or more substrates are arranged in parallel in the longitudinal direction However, a configuration in which two or more substrates are arranged in parallel in the transverse direction Y may also be used. Furthermore, although the two illustrated substrates 10 and 11 are of the same shape and size, they do not necessarily have to be of the same shape and size.

For the substrate 10 and the substrate 11, a glass epoxy substrate (FR-4), a glass composite substrate (CEM-3), a paper epoxy substrate (FR-3), a paper phenolic substrate (XPC), a metal base substrate, etc. may be used. I can do it. As shown in FIGS. 1 and 2, the substrate 10 and the substrate 11 are attached to the base 20 of the pedestal 2, which constitutes a part of the lamp 101, with a fixing member such as an adhesive or a screw, or formed on the pedestal 2. It can be attached using a holding mechanism, etc.

The conductive layer 12 is a supply path for supplying lighting power to the light emitting element 13, is made of a material containing copper, silver, nickel, gold, molybdenum, etc., and is formed as a wiring circuit.

The light emitting element 13 constitutes a light source circuit. The light emitting element 13 is, for example, a surface-mountable light emitting diode (hereinafter referred to as "LED"), and is mounted on an LED chip that emits blue light with a wavelength of 440 to 480 nm, and converts the wavelength of blue light into yellow light. Pseudo-white LEDs packaged with phosphors are used. Note that the light emitting element 13 is not limited to an LED, and for example, a laser diode, an organic EL (Organic Electro-Luminescence), or the like can be used.

The number, arrangement position, etc. of the light emitting elements 13 are appropriately determined according to the design specifications of the light source unit 1, the lamp 101, which will be described later, and the lighting device 100. For example, the light emitting elements 13 may be arranged in multiple rows in parallel along the longitudinal direction X. Further, the light emitting elements 13 may be arranged in a staggered manner.

The copper foil pad 14 is mounted and connected to the conductive layer 12, and is provided for joining the connecting member 15 with solder. Two copper foil pads 14 are provided at each end of the substrate 10 and the substrate 11 in the longitudinal direction X. Two copper foil pads 14 provided at each end of the substrate 10 and the substrate 11 in the longitudinal direction X are arranged with the light emitting element 13 sandwiched therebetween in the lateral direction Y of the substrate 10 and the substrate 11. It should be noted that the copper foil pads 14 are not limited to the illustrated positions and numbers, and may be appropriately changed and provided depending on the sizes and shapes of the substrates 10 and 11, the arrangement of the light emitting elements 13, etc.

The connection member 15 electrically connects the plurality of substrates 10 and substrates 11 via the conductive layer 12, as shown in FIGS. 1 to 4. As shown in FIG. 5, the connecting member 15 is a fibrous braided conductor formed by weaving copper wire, which is a conductive wire, into a net shape, and has flexibility. The connection member 15 is, for example, a plain knitted copper wire. The connecting member 15 is formed by weaving copper wires diagonally across each other, as shown in FIG. 5, for example, or by weaving copper wires crosswise in every direction. Since the connecting member 15 has flexibility, it can be freely deformed. Note that the connecting member 15 is not limited to a copper wire, and may be a metal material having conductivity, or may include a material other than a metal material. In addition, the connecting member 15 has a flat longitudinal section, for example, but may have a circular, elliptical, rectangular, or polygonal longitudinal section, or may have other shapes.

The connecting member 15 has one end electrically connected to the conductive layer 12 of one adjacent substrate 10, and the other end electrically connected to the conductive layer 12 of the other adjacent substrate 11. Specifically, the connecting member 15 has one end placed on the copper foil pad 14 provided on one substrate 10 and soldered to the solder joint 16, and a copper foil pad 14 provided on the other substrate 11. It has a solder joint part 17 on which the other end is placed and soldered. Adjacent substrates 10 and 11 are electrically connected by soldering the connecting member 15 to the copper foil pad 14 . The connecting member 15 can be adjusted to an appropriate length according to the arrangement of the substrates 10 and 11. Therefore, the arrangement of the light source unit 1 can be freely designed by narrowing or widening the spacing between the substrates. Furthermore, by increasing the contact area with the solder, the connection member 15 can improve the strength of the solder joints 16 and 17. Furthermore, by increasing the contact area with the solder, the connecting member 15 can lower the impedance of the solder joints 16 and 17, thereby reducing power transmission loss and improving transmission efficiency. I can do it. Moreover, since heat generation is suppressed in the solder joints 16 and 17 having low impedance, connection quality can be maintained. Note that various known methods can be used for solder bonding, such as heating with a trowel or spot bonding using a laser. Further, both ends of the connecting member 15 may be impregnated with solder in advance to facilitate soldering.

As described above, the light source unit 1 according to the first embodiment includes the conductive layer 12 laid on one surface and the light emitting element 13 mounted and electrically connected to the conductive layer 12. The device includes a plurality of substrates 10 and a substrate 11, and a connection member 15 that electrically connects the plurality of substrates 10 and the substrate 11 via a conductive layer 12. The connecting member 15 is a flexible braided conductor formed by braiding conductive wires. The connecting member 15 has one end electrically connected to the conductive layer 12 of one adjacent substrate 10 and the other end electrically connected to the conductive layer 12 of the other adjacent substrate 11 .

In this way, the light source unit 1 according to the first embodiment is configured to electrically connect the adjacent substrates 10 and 11 using the connecting member 15 made of a thin braided conductor. Even if the light emitting element 13 is placed near the light emitting element 13, the light from the light emitting element 13 is not blocked, and the degree of freedom in design can be improved. As shown in FIG. 5, by making the braided conductor used for the connection member 15 flat, a cross-sectional area S is ensured and the impedance of the connection member 15 can be lowered, thereby reducing power transmission loss. By doing so, transmission efficiency can be improved. Further, since the connection member 15 with low impedance suppresses heat generation, the connection quality of the solder joints 16 and 17 can be maintained over a long period of time. Note that the connection member 15 may use a single braided conductor having a flat shape, or may be configured to have a flat shape as a whole using a plurality of braided conductors.

Here, specifically, as shown in FIG. 4, it is preferable that the connecting member 15 is disposed outside the area defined by the irradiation range angle θ of the light emitting element 13. The irradiation range angle θ of the light emitting element 13 is, for example, an angle defined by twice the angle at which the brightness becomes 1/2, based on the brightness at the optical axis P of the light emitting element 13, and is also referred to as the directivity angle. say. As shown in FIGS. 4 and 5, the connection member 15 has a height H2 from the substrate 10 and the substrate 11 along the optical axis P of the light emitting element 13, which is the height of the light emitting device mounted on the substrate 10 and the substrate 11. It is preferable that the height dimension of the element 13 is less than or equal to H1. In addition, the height H2 of the connecting member 15 from the substrate 10 along the optical axis P of the light emitting element 13 is the state in which one surface of the substrate 10 and the substrate 11 on which the light emitting element 13 is mounted is viewed in plan. (See FIGS. 1 and 2), the length L in the direction X connecting the substrate 10 and the substrate 11 or less, and the length W or less in the direction Y orthogonal to the direction X connecting the substrate 10 and the substrate 11. It is more preferable. As a result, the connecting member 15 can be soldered at a low position without blocking the light from the light emitting element 13, so the copper foil pad 14 can be placed close to the light emitting element 13, and the board 10 and the board 11 can be placed close to each other. can be made thinner. Furthermore, even if the connecting member 15 is deformed due to misalignment of the substrates 10 and 11 or linear expansion of the substrates 10 and 11, the light from the light emitting element 13 is blocked by the connecting member 15. Never.

Further, in the light source unit 1 according to the first embodiment, by electrically connecting the adjacent substrates 10 and 11 with the connecting member 15, the positions where the substrates 10 and 11 are arranged may shift due to assembly variations, or Even if the substrates 10 and 11 are linearly expanded and their absolute positions or relative positions shift after they are connected by the connecting member 15, stress can be prevented from being directly applied to the solder joints 16 and 17. . Thereby, even if the substrate 10 and the substrate 11 are deviated from the reference position, the connection state of the substrate 10 and the substrate 11 by the connecting member 15 can be maintained for a long period of time, thereby contributing to quality improvement. Moreover, since the accuracy of the installation positions of the substrates 10 and 11 is not required during the assembly work of the substrates 10 and 11, the workability of the assembly work is improved.

As disclosed in Patent Document 1, in the method of connecting connectors mounted on a plurality of different boards, stress may continue to be applied to the solder joint between the connector and the board, resulting in wire breakage, etc. There is also a risk of causing problems. The light source unit 1 according to the first embodiment has a configuration in which the adjacent substrates 10 and 11 are electrically connected by the connecting member 15, which is a flexible braided conductor, so that the connecting member 15 and the copper foil Stress is not continuously applied to the solder joint portion with the pad 14, and there is no fear that the solder will peel off from the copper foil pad 14 or that the copper foil pad 14 will peel off from the substrate 10. Therefore, the light source unit 1 can maintain good usage conditions for a long period of time without suffering from lighting failure.

Furthermore, the connecting member 15 made of a braided conductor is not covered with a resinous covering. In other words, the connecting member 15 made of the braided conductor can be formed without using a resin material, so the environmental load is small. In addition, the connecting member 15 made of a braided conductor does not require processing such as removing the covering from the end, so it can be prepared simply by cutting it to the required length, contributing to improved assembly work. can.

FIG. 6 is a plan view showing a modification of the light source unit 1 according to the first embodiment. FIG. 7 is an enlarged view of section C shown in FIG. 6. FIG. 8 is an explanatory diagram showing an example of a state in which the positions of adjacent substrates are shifted from the state shown in FIG. 6. FIG. 9 is an explanatory diagram showing the connection member 15 in the state shown in FIG. 8. FIG. 10 is an explanatory diagram showing a different example of a state in which the positions of adjacent substrates are shifted from the state shown in FIG. 6. FIG. 11 is an enlarged view showing the connecting member in the state shown in FIG. 10.

The connecting member 15 of the light source unit 1 shown in FIGS. 6 and 7 is connected to the direction It has a curved portion 15a that protrudes in the orthogonal direction Y. As an example, the connecting member 15 shown in FIG. 7 has a plurality of curved portions 15a, so that it has a wave-like configuration that repeats unevenness in a direction Y that is orthogonal to a direction X that connects the substrates 10 and 11. The curved portion 15a may be curved into the illustrated arc shape or may be bent into a triangular shape. Further, the curved portion 15a is not limited to a configuration in which a plurality of curved portions 15a are provided as shown in the figure, and it is sufficient to have one or more curved portions 15a.

By providing the connecting member 15 with the curved portion 15a in this manner, the above effects can be further enhanced. That is, in the light source unit 1 according to the first embodiment, as shown in FIGS. 8 to 11, the positions of the substrate 10 and the substrate 11 may be shifted due to assembly variations, or the substrate 10 and the substrate 11 may be disposed side by side after being connected by the connecting member 15. Even if the absolute position or relative position of 11 shifts due to linear expansion, the shape of the curved portion 15a changes to accommodate the position shift, so that stress is directly applied to the solder joints 16 and 17. can be suppressed. Thereby, even if the substrate 10 and the substrate 11 are deviated from the reference position, the connection state of the substrate 10 and the substrate 11 by the connecting member 15 can be maintained for a long period of time, thereby contributing to quality improvement. Moreover, since the accuracy of the installation positions of the substrates 10 and 11 is not required during the assembly work of the substrates 10 and 11, the workability of the assembly work is improved.

Next, the lamp 101 and the lighting device 100 will be described with reference to FIGS. 12 to 15. FIG. 12 is a perspective view showing a configuration example of the lighting device 100 in the first embodiment. FIG. 13 is an exploded perspective view of the lighting device 100 shown in FIG. 12. FIG. 14 is a perspective view showing the lamp 101 in the first embodiment. FIG. 15 is an exploded perspective view of the lamp 101 according to the first embodiment.

(Lighting device 100)
As shown in FIGS. 12 and 13, the lighting device 100 according to the first embodiment has an elongated shape extending in the longitudinal direction It irradiates light into an illuminated space. The lighting device 100 includes a long light fixture 101 that irradiates light into an illumination space, and a long fixture that is attached and fixed to an attached part 103 such as a ceiling or a wall, and to which the long light fixture 101 is detachably attached. 102.

As shown in FIGS. 14 and 15, the lamp 101 includes a light source unit 1, a pedestal 2, a power source 3, a connector 4, and a cover 5. On the other hand, the instrument 102 includes an instrument main body 6, a terminal block 7, and a holder 8, as shown in FIGS. 12 and 13. Although the light emitting elements 13 are partially omitted in FIGS. 12 and 13, they are actually mounted continuously along the longitudinal direction X of the lamp 101.

(Lighting 101)
First, each component of the lamp 101 will be explained based on FIGS. 12 to 15. The configuration of the light source unit 1 is as described above. The pedestal part 2 is formed of a sheet metal, and has a heat dissipation function to dissipate the operating heat of the light source unit 1 or the power supply part 3. Note that the pedestal portion 2 may be partially or entirely formed of a material other than metal as long as it has a heat dissipation function. The material other than metal is, for example, synthetic resin or ceramic.

As shown in FIGS. 14 and 15, the pedestal portion 2 includes a long and flat base portion 20 extending along the longitudinal direction It has a pair of side wall parts 21 which are bent and formed. As shown in FIG. 15, the pedestal portion 2 has a base portion 20 and a side wall portion 21 that have a concave cross-sectional shape.

As shown in FIGS. 12, 13, and 15, the light source unit 1 is provided on the lower surface of the base 20 on the irradiation side. Specifically, the substrate 10 and the substrate 11 of the light source unit 1 are attached to the base 20 with, for example, an adhesive 23. Note that the means for attaching the substrates 10 and 11 of the light source unit 1 to the base 20 is not limited to the adhesive 23; for example, a fixing member such as a screw may be used, or a part of the base 20 may be cut out. A holding mechanism may be formed and the substrate 10 and substrate 11 of the light source unit 1 may be held by the holding mechanism. The holding mechanism may be formed into a rail shape by extrusion molding, for example. Further, as shown in FIG. 14, on the upper surface of the base 20, a power supply section 3 and a connector 4 that engages with the holder 8 of the instrument 102 are provided. The side wall portion 21 is bent at an angle of approximately 90 degrees on the opposite side to the side on which the light source unit 1 is provided. The tip end of the side wall portion 21 is a substantially C-shaped curl portion 22 that is folded back toward the inside of the pedestal portion 2 .

The power supply unit 3 has a function as a power supply that supplies power supplied from the terminal block 7 to the light emitting element 13, and a function of controlling lighting power. The power supply section 3 has a configuration in which a power supply board having a power supply circuit that generates power to be supplied to the light emitting element 13 is housed inside a long power supply case. The power supply circuit is composed of electronic components and the like mounted on the power supply board. Note that the power supply unit 3 does not need to be configured as a part of the lamp 101 and may be configured as a part of the fixture 102.

The connector 4 is provided for engaging with a holder 8 provided on the fixture 102 and attaching the lamp 101 to the fixture 102. The connector 4 has a plate shape, for example, and has an opening through which the holder 8 is inserted. As shown in FIG. 14, the connectors 4 are provided at both ends of the base 20 in the longitudinal direction X at positions corresponding to the holders 8. Note that the position and number of the connectors 4 are changed as appropriate depending on the shape and size of the lighting device 100. Further, the connecting tool 4 is not limited to the illustrated configuration, and may have other forms as long as it can hold the holder 8. Furthermore, although not shown, the fixture 102 may be provided with the connector 4 and the lamp 101 may be provided with the holder 8.

The cover 5 is a member that is formed using a translucent material and covers the periphery of the light emitting element 13 of the light source unit 1. The light emitted from the light emitting element 13 is irradiated onto an illumination space such as an indoor space through the cover 5. The translucent material is, for example, a synthetic resin such as polycarbonate, acrylic, or polypropylene. The cover 5 is formed by injection molding, extrusion molding, three-dimensional layered manufacturing, etc. depending on the material used.

As shown in FIG. 15, the cover 5 is formed into an elongated box shape having a light-transmitting exit surface and an opening surface facing the exit surface. Specifically, the cover 5 includes an elongated and curved cover main body 50 that serves as an output surface, and cover ends 51 that close both end surfaces of the cover main body 50 in the longitudinal direction X. . The cover end portion 51 is attached to the cover body portion 50 by, for example, adhesive.

As shown in FIG. 15, the cover body part 50 includes a concave light-transmitting part 50a that transmits light emitted from the light-emitting element 13, and a concave light-transmitting part 50a that extends from both ends of the light-transmitting part 50a in the transverse direction Y to the attached part 103. It has mounting portions 50b that stand up toward each other. The light transmitting part 50a faces the light source unit 1 and has a curved surface shape so as to irradiate the light emitted from the light source unit 1 downward Z2. In the illustrated example, the translucent portion 50a has a substantially U-shaped vertical cross-section, but may have a V-shape, a W-shape, a rectangular shape, or other shapes, for example.

The attachment portion 50b is formed along the longitudinal direction X of the cover 5, and is provided for attaching the cover 5 to the pedestal portion 2. The cover 5 is attached to the pedestal part 2 by disposing the pedestal part 2 between the left and right mounting parts 50b and hooking the tip of the mounting part 50b to the curled part 22.

(Instrument 102)
Next, each component of the instrument 102 will be described with reference to FIGS. 12 and 13. The appliance 102 shown in FIGS. 12 and 13 is, for example, a so-called V-shaped direct-mounted appliance. Note that the appliance 102 is not limited to the illustrated direct-mount type appliance, and may take other forms. As described above, the instrument 102 includes the instrument body 6, the terminal block 7, and the holder 8. The instrument main body 6 has a main body part 60 extending along the longitudinal direction X, and end plate parts 61 attached to both ends of the main body part 60.

The main body portion 60 is formed by bending a sheet metal. The main body part 60 includes a bottom part 60a attached to the attached part 103, a pair of side parts 60b extending toward the lamp 101 from both ends of the bottom part 60a in the transverse direction Y, and each side part 60b. A pair of inclined portions 60c are formed to protrude in a direction away from each other from the distal end portions and are formed to be inclined toward the attached portion 103. The main body portion 60 has a bottom portion 60a and side portions 60b that have a concave cross-sectional shape in the transverse direction Y, and the lamp 101 is mounted inside the concave portion.

A plurality of attachment holes (not shown) are formed in the bottom surface portion 60a, through which hanging bolts, screws, or the like for attaching the instrument 102 to the attached portion 103 are passed. The instrument 102 is attached to the attached portion 103 by joining the bottom portion 60a to the attached portion 103 with a hanging bolt, screw, or the like. Further, a wire passage hole for passing an external electric wire into the interior of the lighting device 100 is formed in the bottom surface portion 60a. The external electric wire is connected to the terminal block 7 inside the recess of the instrument 102. The inclined portion 60c is provided to reflect a portion of the light emitted from the lamp 101 and distribute the light laterally.

The end plate portions 61 are attached to both ends of the main body portion 60 in the longitudinal direction X so as to close both end surfaces of the main body portion 60 in the longitudinal direction X. Note that the end plate portion 61 may be provided with a knockout 62 that is opened to allow a power transmission line to pass through when a plurality of lighting devices 100 are connected and installed in the longitudinal direction X.

Further, a terminal block 7 and a holder 8 are provided inside the recess formed by the bottom surface portion 60a and the pair of side portions 60b, 60b. The terminal block 7 is fixed to the bottom part 60a. The terminal block 7 is connected to fixed wiring (not shown) provided in a building or the like, receives power from a commercial power source, and is provided for relaying control communications. The terminal block 7 is connected to the power supply section 3 via an electric wire having a connector at one end.

The holder 8 is provided to engage with the connector 4 to attach the lamp 101 to the fixture 102. The holder 8 is made of an elastic material such as stainless steel, and is a plate spring formed by curving a band-shaped plate. The base end of the holder 8 is attached to the bottom surface 60a. In the illustrated example, one holder 8 is provided at each end of the bottom surface portion 60a in the longitudinal direction X at a position corresponding to the connector 4. Note that the number of holders 8 is not limited to the two illustrated. For example, when the length of the lighting device 100 in the longitudinal direction X is short, the holder 8 may be provided at one end in the longitudinal direction X, and fixed to the other end in the longitudinal direction X with a hook or the like. Moreover, when the length of the lighting device 100 in the longitudinal direction X is long, the holders 8 may be provided at both ends and at the center in the longitudinal direction X, respectively. In short, the position and number of the holders 8 are changed as appropriate depending on the shape and size of the lighting device 100.

Note that the holder 8 is not limited to a plate-shaped elastic member, and may be any elastic member other than a plate spring, such as a wire spring, as long as it can hold the lamp 101. Furthermore, the lamp 101 may be attached to the fixture 102 without using the holder 8 and the connector 4, for example, using a fixing device such as a screw or a rivet.

Although the light source unit 1, the lamp 101, and the lighting device 100 have been described above based on the embodiments, the light source unit 1, the lamp 101, and the lighting device 100 are not limited to the configurations of the embodiments described above. The configurations of the light source unit 1, lamp 101, and lighting device 100 described above are merely examples, and may include other components or may omit some components. In short, the light source unit 1, the lamp 101, and the lighting device 100 are subject to a range of design changes and application variations that are commonly made by those skilled in the art without departing from the technical concept thereof.

1 Light source unit, 2 Pedestal part, 3 Power supply part, 4 Connector, 5 Cover, 6 Instrument body, 7 Terminal block, 8 Holder, 10, 11 Board, 12 Conductive layer, 13 Light emitting element, 14 Copper foil pad, 15 Connecting member, 15a Bend portion, 16, 17 Solder joint portion, 20 Base portion, 21 Side wall portion, 22 Curled portion, 23 Adhesive, 50 Cover body portion, 50a Transparent portion, 50b Mounting portion, 51 Cover end portion, 60 Main body part, 60a bottom part, 60b side part, 60c inclined part, 61 end plate part, 62 knockout, 100 lighting device, 101 lamp, 102 fixture, 103 attached part, P optical axis, θ irradiation range angle.

Claims (7)

a plurality of substrates having a conductive layer laid on one surface and a light emitting element mounted and electrically connected to the conductive layer;
a connecting member that electrically connects the plurality of substrates via the conductive layer,
The connecting member is a flexible braided conductor formed by braiding conductive wires, one end of which is electrically connected to the conductive layer of one of the adjacent substrates, and the other end of which is electrically connected to the conductive layer of one of the adjacent substrates. A light source unit electrically connected to the conductive layer of the other adjacent substrate. The light source unit according to claim 1, wherein the connecting member is arranged outside a region defined by an irradiation range angle of the light emitting element. The connection member according to claim 1 or 2, wherein a height dimension from the substrate along the optical axis of the light emitting element is equal to or less than a height dimension of the light emitting element mounted on the substrate. light source unit. The connecting member has a height dimension from the substrate along the optical axis of the light emitting element in a direction in which the substrates are connected when one surface of the substrate on which the light emitting element is mounted is viewed from above. The light source unit according to any one of claims 1 to 3, which is equal to or less than a length dimension and equal to or less than a length dimension in a direction perpendicular to a direction in which the substrates are connected. From claim 1, wherein the connecting member has a curved portion that protrudes in a direction perpendicular to a direction in which the substrates are connected when one surface of the substrate on which the light emitting element is mounted is viewed in plan. The light source unit according to claim 4. The light source unit according to any one of claims 1 to 5,
a pedestal portion having an elongated and flat base portion, and the light source unit is provided on the base portion;
A light fixture, comprising: a translucent cover attached to the pedestal so as to cover the light emitting element. The lamp according to claim 6,
A lighting device comprising: a fixture to which the lamp is detachably attached.

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