JP6899538B2 - Light emitting device and lighting device - Google Patents

Description

The present invention relates to a light emitting device and a lighting device including the light emitting device.

In recent years, from the viewpoint of energy saving, a lighting device (LED lighting) using an LED (Light Emitting Diode) has rapidly become widespread. Conventionally, as this type of LED lighting, a long-shaped lighting device including a long-shaped housing and an LED module arranged in the housing is known (for example, Patent Document 1). The LED module includes, for example, a substrate and an LED element mounted on the substrate.

Japanese Unexamined Patent Publication No. 2012-84367

LED lighting includes a power supply built-in type lighting device having a built-in power supply circuit composed of a plurality of circuit elements. In a lighting device with a built-in power supply, the LED module is lit by converting the supplied AC power into DC power by a power supply circuit.

When a plurality of such lighting devices with a built-in power supply are connected and used, there is a problem in the method of supplying power to the adjacent lighting device.

Further, as a lighting device having a built-in power supply, an LED module in which a circuit element constituting a power supply circuit together with an LED element is mounted on a substrate is being studied. In such an LED module, the supplied AC power is converted into DC power by a circuit element mounted on the LED module to light the LED element.

When a plurality of LED modules on which circuit elements constituting such a power supply circuit are mounted are arranged and connected in one lighting device, there is a problem in a method of supplying power to adjacent LED modules.

In order to solve these problems, it is conceivable to form a feed wiring for sending the AC power supplied to the LED module to the outside of the LED module in a predetermined pattern on the substrate of the LED module.

As a result, when a plurality of lighting devices with a built-in power supply are connected and used, the AC power supplied to one lighting device can be supplied to the other lighting device by the feed wiring of the LED module. .. Further, even when a plurality of LED modules on which circuit elements constituting the power supply circuit are mounted are arranged and connected in one lighting device, the AC power supplied to one LED module by the feed wiring of the LED module is also used. Can be supplied to the other LED module by the feed wiring of the LED module.

However, in an LED module (light emitting device) having a feed wiring for sending AC power to the outside, when an overcurrent occurs in the feed wiring, the overcurrent is applied to electronic components such as circuit elements that are electrically connected to the feed wiring. There is a risk that the electronic components will be destroyed or deteriorated due to the transmission, and there is a problem that the light emitting device having the feed wiring has low reliability.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a highly reliable light emitting device and lighting device.

In order to achieve the above object, one aspect of the light emitting device according to the present invention is provided on the substrate, the substrate, the light emitting element, the first terminal and the second terminal arranged on the substrate, and the first. A plurality of circuit elements constituting a feed wiring for sending the AC power supplied to the terminal to the second terminal and a circuit for generating power for causing the light emitting element to emit light by the AC power supplied to the first terminal. And a protective element inserted on the wiring path of the feed wiring between the first terminal and the circuit.

Further, one aspect of the lighting device according to the present invention includes the above-mentioned light emitting device.

It is possible to realize a highly reliable light emitting device and lighting device.

It is a perspective view which shows the appearance of the lighting apparatus which concerns on embodiment. It is an exploded perspective view of the lighting apparatus which concerns on embodiment. It is sectional drawing of the lighting apparatus which concerns on embodiment. It is a top view of the LED module in the lighting apparatus which concerns on embodiment. It is a figure which shows the circuit structure of the LED module in the lighting apparatus which concerns on embodiment. It is a figure which shows the circuit structure when two lighting devices which concern on embodiment are connected.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that all of the embodiments described below show a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions of the components, connection forms, and the like shown in the following embodiments are examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present invention will be described as arbitrary components.

Each figure is a schematic view and is not necessarily exactly illustrated. In each figure, substantially the same configuration is designated by the same reference numerals, and duplicate description may be omitted or simplified.

Further, in the present specification and the drawings, the X-axis, the Y-axis, and the Z-axis represent the three axes of the three-dimensional Cartesian coordinate system. In the present embodiment, the Z-axis direction is the vertical direction and is perpendicular to the Z-axis. (Direction parallel to the XY plane) is the horizontal direction. The X-axis and the Y-axis are orthogonal to each other and both are orthogonal to the Z-axis.

(Embodiment)
First, the lighting device 1 according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing the appearance of the lighting device 1 according to the embodiment. FIG. 2 is an exploded perspective view of the lighting device 1. FIG. 3 is a cross-sectional view of the lighting device 1.

The lighting device 1 shown in FIG. 1 is installed in a living room or bedroom of a house and used as indirect lighting such as cove lighting or cornice lighting, or is installed in a kitchen or the like and used as kitchen lighting or the like. The lighting device 1 may be used not as indirect lighting but as main lighting such as a base light installed on a ceiling or the like.

As shown in FIG. 1, the illuminating device 1 is a thin and long luminaire (slim line illuminating) as a whole, and emits line illuminating light. The overall shape of the lighting device 1 in the present embodiment is a flat rectangular parallelepiped, but the present invention is not limited to this. As an example, the lighting device 1 (lighting fixture 2) has a height of about 15 mm, a width of about 35 mm, and a total length of about 300 mm, but is not limited thereto. For example, the total length of the lighting device 1 may be about 600 mm, about 1500 mm, or the like. Further, the aspect ratio (horizontal / vertical) of the lighting device 1 when viewed from the side along the Y-axis direction is about 1 or more and 4 or less.

As shown in FIGS. 1 and 2, the luminaire 1 includes a luminaire 2 and a mounting member 3 for mounting the luminaire 2 on a construction material such as a ceiling or a wall.

The luminaire 2 includes an LED module 100, a housing 200, and an end cover 300. The mounting member 3 is a long mounting bracket made of a metal material such as an aluminum alloy. The total length of the mounting member 3 is substantially the same as that of the lighting fixture 2 (housing 200).

When the luminaire 2 is installed on the construction material, first, the mounting member 3 is fixed to the construction material with screws 4 (see FIG. 2). Next, as shown in FIG. 3, the claw portion 3a is hooked on the groove portion 2a by hooking the groove portion 2a of the lighting fixture 2 on the claw portion 3a of the mounting member 3 fixed to the construction material. As a result, the lighting fixture 2 can be installed on the construction material. The claw portion 3a has, for example, a T-shaped cross section and has a structure of fitting into the groove portion 2a.

Hereinafter, each component of the luminaire 2 according to the embodiment will be described in detail with reference to FIGS. 1 to 3 with reference to FIGS. 4 and 5. FIG. 4 is a plan view of the LED module 100 in the lighting device 1 according to the embodiment. FIG. 5 is a diagram showing a circuit configuration of the LED module 100.

[LED module]
The LED module 100 is an example of a light emitting device, and emits white light, for example. As shown in FIG. 3, the LED module 100 is housed in the housing 200. The light of the LED module 100 passes through the second housing 220 of the housing 200 and is radiated to the outside.

As shown in FIGS. 2 to 4, the LED module 100 includes a substrate 110, a light emitting element 120, a first terminal 131 and a second terminal 132, a wiring 140, a circuit element 150, and a protection element 160. ..

[substrate]
As shown in FIGS. 2 to 4, the substrate 110 is a long plate member. In the present embodiment, the substrate 110 is a long rectangular substrate in which a part of a short side is recessed so that a part of a corner portion is cut out. Specifically, the substrate 110 is a long rectangular shape in which the corners of both ends of one long side are cut out in a rectangular shape. As an example, the substrate 110 has a long side (the long side not notched) having a length of about 295 mm and a width length of about 31 mm, but the long side and the width have a length of about 31 mm. , Not limited to this. Further, the shape of the substrate 110 in a plan view is not limited to the rectangular shape shown in FIGS. 2 and 4, and may be a rectangular shape that is not cut out, a curved shape, or the like. The substrate 110 is placed on the bottom of the first housing 210 of the housing 200.

The substrate 110 is, for example, a resin-based resin substrate, a ceramic substrate made of ceramic, a metal-based metal-based substrate, or the like.

As the resin substrate, for example, a glass epoxy substrate made of glass fiber and epoxy resin (CEM-3, FR-4, etc.), a substrate made of paper phenol or paper epoxy (FR-1 etc.), or the like can be used. it can. As the ceramic substrate, an alumina substrate made of alumina, an aluminum nitride substrate made of aluminum nitride, or the like can be used. As the metal base substrate, for example, an aluminum alloy substrate, an iron alloy substrate, a copper alloy substrate, or the like having an insulating film coated on the surface can be used. The substrate 110 is not limited to a rigid substrate, and may be a flexible substrate made of polyimide or the like and having flexibility.

A circuit element 150 is arranged on the substrate 110. In the present embodiment, not only the circuit element 150 but also the light emitting element 120 is arranged on the substrate 110. That is, the light emitting element 120 and the circuit element 150 are arranged on the same substrate 110.

The substrate 110 is a printed circuit board on which metal wiring is formed. For example, wiring 140 is formed on one main surface of the substrate 110 in a pattern having a predetermined shape. In this embodiment, a FR-4 double-sided substrate is used as the substrate 110. That is, as the substrate 110, a resin substrate having a metal film (copper foil or the like) formed on both main surfaces is used. The metal film on one surface of the substrate 110 is formed as a wiring 140 in a predetermined shape.

[Light emitting element]
The plurality of light emitting elements 120 are light emitting units that serve as light sources for the LED module 100 and the lighting fixture 2. In the present embodiment, the plurality of light emitting elements 120 are arranged in a linear line shape (linear shape), but the present invention is not limited to this, and the plurality of light emitting elements 120 may be arranged in a curved shape or a wavy shape. The plurality of light emitting elements 120 arranged in a line shape function as a line light source that emits light along the line shape.

As shown in FIGS. 2 and 4, the plurality of light emitting elements 120 are arranged on the substrate 110 along the longitudinal direction (Y-axis direction) of the substrate 110. Specifically, all the light emitting elements 120 on the substrate 110 are mounted on the substrate 110 in a straight line in a row. The fact that the plurality of light emitting elements 120 are arranged along the longitudinal direction of the substrate 110 is not limited to the case where the rows of the plurality of light emitting elements 120 are parallel to the long side of the substrate 110, and the length of the substrate 110 It means that they are arranged in any direction from one end of the direction to the other end. The element row of the light emitting element 120 composed of the plurality of line-shaped light emitting elements 120 is not limited to one row, and may be a plurality of rows. Further, the plurality of light emitting elements 120 are arranged at equal intervals, but the present invention is not limited to this.

Each light emitting element 120 is an SMD type LED element in which an LED chip is packaged, and is a white resin or ceramic container having a recess and one or more LED chips primarily mounted on the bottom surface of the recess of the container. And a sealing member sealed in the recess of the container. The sealing member is made of a translucent resin material such as a silicone resin. The sealing member may be a phosphor-containing resin containing a wavelength conversion material such as a phosphor.

The LED chip is an example of a semiconductor light emitting element that emits light by a predetermined DC power, and is a bare chip that emits a single color of visible light. The LED chip is, for example, a blue LED chip that emits blue light when energized. In this case, in order to obtain white light, the sealing member contains a yellow phosphor such as YAG (yttrium aluminum garnet) that fluoresces the blue light from the blue LED chip as excitation light.

As described above, the light emitting element 120 in the present embodiment is a BY type white LED light source composed of a blue LED chip and a yellow phosphor. Specifically, the yellow phosphor absorbs a part of the blue light emitted by the blue LED chip and is excited to emit the yellow light, and this yellow light and the blue light not absorbed by the yellow phosphor are mixed. Becomes white light.

The plurality of light emitting elements 120 emit light by the DC power supplied from the circuit elements 150 constituting the power supply circuit 150a (see FIG. 4). The mode of connection of the plurality of light emitting elements 120 (series connection, parallel connection, connection of a combination of series connection and parallel connection, etc.) is not particularly limited.

[1st terminal, 2nd terminal]
As shown in FIGS. 2 and 4, the first terminal 131 and the second terminal 132 are arranged on the substrate 110. The first terminal 131 is arranged at one end of the substrate 110 in the longitudinal direction, and the second terminal 132 is arranged at the other end of the substrate 110 in the longitudinal direction. Specifically, the first terminal 131 is arranged at one end in the longitudinal direction of the substrate 110 corresponding to the shorter long side. Further, the second terminal 132 is arranged at the other end portion in the longitudinal direction of the substrate 110 corresponding to the shorter long side. The first terminal 131 and the second terminal 132 are connector terminals to which lead wires and the like are connected, and are fixed to the board 110.

In the present embodiment, each of the first terminal 131 and the second terminal 132 is a pair. Specifically, as shown in FIG. 5, one of the pair of first terminals 131 is the L-side terminal 131a and the other is the N-side terminal 131b. Further, one of the pair of second terminals 132 is the L side terminal 132a and the other is the N side terminal 132b. Each of the first terminal 131 and the second terminal 132 may be composed of three or more terminals.

The first terminal 131 is an input side terminal to which power is input from the outside of the LED module 100. That is, the first terminal 131 is a power receiving terminal that receives power from the outside of the LED module 100. Specifically, AC power for causing the light emitting element 120 to emit light is input to the first terminal 131. The first terminal 131 is electrically connected to, for example, an external commercial power source, and an electric wire 400 (see FIG. 2) is connected. As a result, the AC power of the commercial power source is input to the first terminal 131. In this case, a pair of electric wires 400 are electrically and mechanically connected to the pair of first terminals 131 (L-side terminal 131a, N-side terminal 131b). The electric wire 400 is a VVF cable or the like.

The second terminal 132 is an output side terminal that outputs electric power to the outside of the LED module 100. That is, the second terminal 132 is a power transmission terminal that transmits electric power to the outside of the LED module 100. An electric wire is electrically and mechanically connected to the second terminal 132, and electric power is transmitted to the outside from the second terminal 132 via the electric wire.

The pair of first terminals 131 and the pair of second terminals 132 are connected by feed wiring 141. Specifically, the L-side terminal 131a of the first terminal 131 is connected to the L-side terminal 132a of the second terminal 132 by the first feed wiring 141a, and the N-side terminal 131b of the first terminal 131 is the second feed wiring. It is connected to the N side terminal 132b of the second terminal 132 by 141b.

In the present embodiment, the first terminal 131 and the second terminal 132 have the same potential except for the resistance component of the feed wiring 141 and the protection element 160. That is, the L-side terminal 131a of the first terminal 131 and the L-side terminal 132a of the second terminal 132 have the same potential, and the N-side terminal 131b of the first terminal 131 and the N-side terminal 132b of the second terminal 132 have the same potential. It is an electric potential.

As a result, the AC power input to the first terminal 131 is supplied to the second terminal 132 in the same AC waveform without changing the frequency and amplitude. For example, when AC100V AC power is supplied to the first terminal 131, AC100V AC power is supplied to the second terminal 132 as it is. Therefore, in this case, the second terminal 132 can transmit the AC power of AC100V to the outside of the LED module 100.

Further, in the present embodiment, since the branch wiring 142 is provided between the feed wiring 141 and the power supply circuit 150a, the AC power input to the first terminal 131 is also supplied to the power supply circuit 150a. For example, when AC100V AC power is supplied to the first terminal 131, AC100V AC power is supplied to the power supply circuit 150a. That is, the first terminal 131 also functions as a power supply terminal for supplying AC power to the power supply circuit 150a.

As described above, in the LED module 100 of the present embodiment, when AC power is supplied to the first terminal 131, AC power is supplied to the second terminal 132 via the feed wiring 141 and AC power is supplied to the power supply circuit 150a. Power is supplied.

[wiring]
As shown in FIG. 2, the substrate 110 is provided with wiring 140. The wiring 140 is a pattern wiring formed on the substrate 110 in a predetermined pattern. The wiring 140 is, for example, a metal wiring made of a metal material such as Ag (silver), Cu (copper), or gold (Au).

As shown in FIGS. 4 and 5, the wiring 140 has a feed wiring 141 and a branch wiring 142. The feed wiring 141 and the branch wiring 142 are made of the same material, and are simultaneously patterned in the same process.

The feed wiring 141 is a wiring for sending the AC power supplied to the first terminal 131 to the second terminal 132. One end of the feed wiring 141 is connected to the first terminal 131, and the other end of the feed wiring 141 is connected to the second terminal 132. In the present embodiment, the feed wiring 141 is an AC feed wiring that transmits the AC power supplied to the first terminal 131 to the second terminal 132.

The feed wiring 141 is composed of two wirings, a first feed wiring 141a and a second feed wiring 141b. Each of the first feed wiring 141a and the second feed wiring 141b has a constant width and is formed in a straight line. In the present embodiment, the first feed wiring 141a and the second feed wiring 141b are formed in parallel along the longitudinal direction of the substrate 110 in the vicinity of the long side of the substrate 110. Of the two feed wiring 141 (first feed wiring 141a, second feed wiring 141b), the first feed wiring 141a is the wiring located on the outside, and the second feed wiring 141b is the wiring located on the inside. The length of the feed wiring 141 is at most the length of the shorter long side, and is shorter than the length of the longer long side.

The branch wiring 142 is branched from a part of the feed wiring 141 (branch point BP) and extended to be electrically connected to the power supply circuit 150a. In the present embodiment, the branch wiring 142 branches from each branch point BP of the first feed wiring 141a and the second feed wiring 141b, and extends inward of the substrate 110 along the lateral direction of the substrate 110. Exists.

Specifically, the branch wiring 142 has a first branch wiring 142a branched from the branch point BP of the first feed wiring 141a and a second branch wiring 142b branched from the branch point BP of the second feed wiring 141b. The first branch wiring 142a is branched in a direction perpendicular to the longitudinal direction of the first feed wiring 141a. Further, the second branch wiring 142b is branched in a direction perpendicular to the longitudinal direction of the second feed wiring 141b in parallel with the first branch wiring 142a.

Therefore, the first branch wiring 142a that branches from the first feed wiring 141a located on the outside intersects the second feed wiring 141b. In this case, the first branch wiring 142a is provided so as to straddle the second feed wiring 141b so as not to be electrically connected to the second feed wiring 141b. For example, by using a multilayer wiring board as the substrate 110 and forming the first branch wiring 142a and the second feed wiring 141b in different wiring layers, the first branch wiring 142a and the second feed wiring 141b can be electrically connected to each other. It can be provided on the substrate 110 so as not to be connected. Alternatively, the portion of the first branch wiring 142a that intersects the second feed wiring 141b is cut (that is, without forming the metal wiring of the pattern), and the ends of the cut first branch wiring 142a are separated from each other by a jumper such as a wire. By connecting with a wire, the first branch wiring 142a and the second feed wiring 141b can be provided on the substrate 110 so as not to be electrically connected.

Although not shown, in the wiring 140, in addition to the feed wiring 141 and the branch wiring 142, a plurality of light emitting elements 120 are electrically connected to each other, a plurality of circuit elements 150 are electrically connected to each other, and a light emitting element is used. It may include a pattern wiring for electrically connecting the 120 and the circuit element 150. Further, the wiring 140 may be covered with an insulating film such as a white resist or a glass film. By covering the wiring 140 with an insulating film, the insulating property (withstand voltage) of the substrate 110 can be improved and the wiring 140 can be protected.

[Circuit element]
As shown in FIGS. 2 and 4, the plurality of circuit elements 150 are arranged along the longitudinal direction of the substrate 110. In the present embodiment, the plurality of circuit elements 150 and the plurality of light emitting elements 120 are mounted on the same surface of the substrate 110.

Further, the plurality of circuit elements 150 are arranged in parallel with a row (element row) of the plurality of light emitting elements 120. That is, the plurality of circuit elements 150 are arranged side by side with the plurality of light emitting elements 120. Further, in the present embodiment, the plurality of circuit elements 150 are located between the feed wiring 141 and the row of the light emitting elements 120.

As shown in FIGS. 4 and 5, the plurality of circuit elements 150 include electronic components (circuit components) constituting a power supply circuit 150a that generates electric power for causing at least the plurality of light emitting elements 120 to emit light. That is, the plurality of circuit elements 150 include power supply circuit elements constituting the power supply circuit 150a.

In the present embodiment, since the LED module 100 is driven by the AC direct method, the plurality of circuit elements 150 constituting the power supply circuit 150a emit the AC power supplied to the first terminal 131 and the light emitting element 120. Convert to DC power to make it. Therefore, the plurality of circuit elements 150 include, for example, a rectifying element that rectifies an AC voltage and converts it into a DC rectified voltage, and the plurality of light emitting elements 120 emit light according to the rectified voltage. The DC power generated by the plurality of circuit elements 150 constituting the power supply circuit 150a is supplied to each of the plurality of light emitting elements 120 via the wiring 140 formed on the substrate 110. The plurality of circuit elements 150 constituting the power supply circuit 150a include, for example, a capacitive element such as an electrolytic capacitor or a ceramic capacitor, a resistance element such as a resistor, a rectifying element, a noise filter, a diode, a semiconductor element such as an integrated circuit element, or the like. Is.

The plurality of circuit elements 150 may include those that do not form the power supply circuit 150a. For example, the plurality of circuit elements 150 may include a control circuit element for controlling the light emitting state of the light emitting element 120, a communication circuit element for communicating with another device, and the like.

[Protective element]
As shown in FIGS. 2, 4 and 5, a protective element 160 is arranged on the substrate 110. The protection element 160 is inserted on the wiring path of the feed wiring 141 between the first terminal 131 and the power supply circuit 150a.

In the present embodiment, the protection element 160 is inserted on the wiring path of the feed wiring 141 between the first terminal 131 and the branch point BP of the feed wiring 141. The protection element 160 is inserted into the first feed wiring 141a connected to the L side terminal 131a of the first terminal 131, but is not limited to this. For example, the protection element 160 may be inserted into the second feed wiring 141b connected to the N side terminal 131b of the first terminal 131, or may be inserted into both the first feed wiring 141a and the second feed wiring 141b. You may be.

The protection element 160 has a function of stopping the power supply by the feed wiring 141 when an abnormality occurs in the feed wiring 141 or when an abnormality occurs in a portion electrically connected to the feed wiring 141. In the present embodiment, since the protection element 160 is inserted on the wiring path of the feed wiring 141 between the first terminal 131 and the power supply circuit 150a, when an abnormality occurs in the feed wiring 141 or the feed wiring 141 When an abnormality occurs in the electrically connected portion, the protection element 160 stops the power supply to the second terminal 132 by the feed wiring 141 and the power supply to the power supply circuit 150a by the feed wiring 141 at the same time. be able to.

The protection element 160 is, for example, an overcurrent protection element. As a result, when an overcurrent occurs in the feed wiring 141, the protection element 160 can simultaneously stop the power supply to the second terminal 132 by the feed wiring 141 and the power supply to the power supply circuit 150a by the feed wiring 141. it can.

As the overcurrent protection element, for example, a fuse can be used. As a result, when an overcurrent occurs in the feed wiring 141, the wiring path of the feed wiring 141 can be cut off by the fuse to stop the power supply by the feed wiring 141. The fuse may be an electronic component mounted on the substrate 110 or a pattern fuse formed on the substrate 110. The pattern fuse may have, for example, a configuration in which a part of the wiring 140 formed on the substrate 110 is thinned.

Further, the protection element 160 is not limited to the one that cuts off the wiring path of the feed wiring 141 by an overcurrent, and may be one that cuts off the wiring path of the feed wiring 141 by the temperature. Further, the protective element 160 removes electronic components and the like (circuit elements 150 constituting the power supply circuit 150a, electronic components of the power supply destination of the second terminal 132, etc.) existing on the wiring path beyond the protective element 160 from overcurrent. Not limited to the one that protects, the power circuit 150a and the like may be protected from an abnormal temperature. For example, a PCT thermistor may be used as the protection element 160. Further, the protective element 160 may protect electronic components and the like existing on the wiring path beyond the protective element 160 from surges.

[Case]
As shown in FIGS. 1 to 3, the housing 200 is an outer housing that forms the outer shell of the lighting fixture 2, and houses the LED module 100. The housing 200 is composed of a first housing 210 having a light-shielding property that covers a plurality of circuit elements 150 (power supply units) and a second housing 220 having a light-transmitting property that covers the plurality of light emitting elements 120. .. In the present embodiment, the first housing 210 and the second housing 220 are integrally formed by two-color molding, but the present invention is not limited to this. For example, the first housing 210 and the second housing 220 may be manufactured separately and fixed to each other by a locking structure, an adhesive, screws, or the like.

The first housing 210 is a support member (base) that supports the LED module 100 (board 110). The first housing 210 is made of a white insulating resin material. Therefore, the first housing 210 has light reflectivity with respect to visible light. That is, the first housing 210 reflects light to block light. In the present embodiment, the first housing 210 is made of white polycarbonate. The first housing 210 may be made of a metal material such as aluminum or iron instead of a resin material. Further, the material of the first housing 210 is not limited to a material that reflects light to block light, and may be a material that absorbs light to block light. In this case, for example, the first housing 210 may be made of a black insulating resin material.

Further, in the first housing 210, a first groove portion 211 into which one end in the width direction (X-axis direction) of the substrate 110 is inserted and a second end in the width direction of the substrate 110 are inserted. It has two grooves 212. The first groove portion 211 and the second groove portion 212 function as guide rails (slide rails) when the substrate 110 is slid and moved in the housing 200, and extend in the longitudinal direction of the housing 200. As a result, the light emitting element 120 and the circuit element 150 are mounted on the substrate 110 and modularized, both ends of the modularized substrate 110 are inserted into the first groove portion 211 and the second groove portion 212, and the substrate 110 is inserted into the housing 200. The LED module 100 can be housed in the housing 200 by sliding it along the longitudinal direction and pushing it inward.

Further, the first housing 210 is provided with a partition plate 213. The partition plate 213 partitions a plurality of light emitting elements 120 (light emitting unit) and a plurality of circuit elements 150 (power supply unit), and in a top view, a row of the plurality of light emitting elements 120 and a row of the plurality of circuit elements 150. It is located between the above and extends along the longitudinal direction of the substrate 110. By providing the partition plate 213 in this way, even if a row of a plurality of light emitting elements 120 and a row of a plurality of circuit elements 150 are arranged in parallel, the light emitted from the light emitting element 120 advances to the partition plate 213 side. The light is uniformly blocked by the partition plate 213. As a result, it is possible to avoid that the line-shaped illumination light emitted from the plurality of light emitting elements 120 is partially blocked by the circuit element 150 and a part of the line-shaped illumination light is lost to form a shadow. It is possible to suppress deterioration of the light distribution characteristics of the lighting device 1). For example, it is possible to obtain an illuminating device 1 that irradiates a uniform line-shaped illumination light. Further, by providing the partition plate 213, the strength of the housing 200 can be improved.

The second housing 220 is a translucent cover that transmits light emitted from the light emitting element 120. The second housing 220 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass material.

The second housing 220 may further have light diffusivity (light scattering property). By providing the second housing 220 with light diffusivity, it is possible to scatter the light from the light emitting element 120, which is an LED light source having strong directivity. (Brightness unevenness) can be suppressed.

When the second housing 220 is provided with light diffusivity, the second housing 220 may be manufactured by dispersing a light diffusing material such as light-reflecting fine particles in a translucent resin material, or the second housing made of a transparent member. By forming a milky white light diffusing film containing a light diffusing material or the like on the surface (inner surface or outer surface) of the 220, the second housing 220 can be made to have light diffusivity. Alternatively, instead of using a light diffusing material, micro-concavities and convexities are formed on the surface of the second housing 220 made of a transparent member by performing embossing or the like, or dots are formed on the surface of the second housing 220 made of a transparent member. The second housing 220 may be provided with light diffusivity by printing a pattern.

In the present embodiment, the second housing 220 is a light-diffusing cover (diffusion cover) made of polycarbonate and having light diffusivity. The second housing 220 may be configured to control the light distribution of the light emitting element 120. For example, the second housing 220 may have a lens function of a light-collecting action or a divergence action.

The upper surface of the second housing 220 is substantially flush with the upper surface of the first housing 210. That is, the upper surface of the second housing 220 and the outer surface of the first housing 210 are flush with each other, and the upper surface of the second housing 220 and the upper surface of the first housing 210 are continuous surfaces without steps. .. In the present embodiment, the second housing 220 is formed to have an L-shaped cross section, but the present invention is not limited to this.

[End cover]
As shown in FIGS. 1 and 2, the end cover (end cover) 300 is an end cap that covers the longitudinal end of the housing 200. The end cover 300 is attached to each of both ends of the housing 200 in the longitudinal direction.

The end cover 300 on the side of at least the first terminal 131 of the two end covers 300 is provided with an insertion hole through which the electric wire 400 is inserted. The electric wire 400 is inserted from the outside to the inside of the housing 200 through the insertion hole of the end cover 300 and is connected to the first terminal 131.

In the present embodiment, both of the two end covers 300 are provided with insertion holes through which the electric wire 400 is inserted. As a result, by connecting the electric wire 400 inserted into the insertion hole of the end cover 300 on the second terminal 132 side to the second terminal 132, the alternating current supplied from the first terminal 131 using this electric wire 400 as the power feed line. Electric power can be output from the second terminal 132 via the electric wire 400. That is, when connecting a plurality of lighting devices 1, AC power can be supplied to the adjacent lighting device 1 by using the electric wire 400 connected to the second terminal 132.

The end cover 300 is fixed to the housing 200 by, for example, an adhesive, a screw, a claw structure, or the like. The end cover 300 is a resin molded product made of a resin material such as polybutylene terephthalate, but may be made of a metal material.

[Example of use]
Next, a usage example of the lighting device 1 according to the embodiment will be described with reference to FIG. FIG. 6 is a diagram showing a circuit configuration when two lighting devices 1 according to the embodiment are connected.

As shown in FIG. 6, for example, when the illuminating device 1a (first illuminating device) and the illuminating device 1b (second illuminating device) are connected, the illuminating device 1a and the illuminating device 1b are connected in the longitudinal direction of the illuminating device 1. The illuminating device 1a and the illuminating device 1b are connected by an electric wire 410 so as to be adjacent to each other along the above. One end of the electric wire 410 connecting the two lighting devices 1a and 1b is connected to the second terminal 132 of the lighting device 1a, and the other end is connected to the first terminal 131 of the lighting device 1b. Like the electric wire 400, the electric wire 410 is, for example, a VVF cable or the like.

In the two lighting devices 1a and 1b connected in this way, AC power is supplied to the lighting device 1a from an external power source such as a commercial power source by the electric wire 400 connected to the first terminal 131. As a result, in the lighting device 1a, the AC power supplied to the first terminal 131 is supplied to the power supply circuit 150a by the branch wiring 142 and converted into DC power by the power supply circuit 150a. The DC power generated by the power supply circuit 150a is supplied to the light emitting element 120, the light emitting element 120 emits light, and the illumination light is emitted from the illumination device 1a.

Further, the AC power supplied to the first terminal 131 of the lighting device 1a is transmitted to the second terminal 132 by the feed wiring 141 of the lighting device 1a, and is transmitted from the second terminal 132 to the adjacent lighting device 1b via the electric wire 410. Be supplied. The AC power supplied to the lighting device 1b is input to the first terminal 131 of the lighting device 1b and supplied to the power supply circuit 150a. As a result, similarly to the illuminating device 1a, the illuminating device 1b also emits light from the light emitting element 120, and the illuminating device 1b irradiates the illuminating light.

When AC power is supplied to the illuminating device 1a in this way, the illuminating device 1a irradiates the illuminating light and the illuminating device 1b also irradiates the illuminating light. As a result, the line-shaped illumination light having a length about twice as long as the line-shaped illumination light emitted by one illumination device 1 is irradiated.

[Summary]
As described above, the LED module 100 (light emitting device) in the present embodiment includes a feed wiring 141 for sending the AC power supplied to the first terminal 131 to the second terminal 132, and is provided with the first terminal. The protection element 160 is inserted in the wiring path of the feed wiring 141 between the 131 and the power supply circuit 150a.

As a result, when an abnormality occurs in the feed wiring 141 or an abnormality occurs in a portion electrically connected to the feed wiring 141, the protection element 160 can stop the power supply by the feed wiring 141.

For example, when an abnormality occurs on the feed wiring 141 due to an overcurrent generated in the feed wiring 141, the protection element 160 supplies power from the first terminal 131 to the second terminal 132 by the feed wiring 141 and the feed wiring. The supply from the first terminal 131 by 141 to the power supply circuit 150a (circuit element 150) is stopped.

Further, when an abnormality such as an overcurrent occurs on the feed wiring 141 due to an abnormality on the power supply circuit 150a or the light emitting element 120 as a portion electrically connected to the feed wiring 141, the protection element 160 sends the feed. The power supply from the first terminal 131 to the power supply circuit 150a (circuit element 150) by the wiring 141 is stopped.

At this time, in the present embodiment, since the protection element 160 is inserted on the wiring path of the feed wiring 141 between the first terminal 131 and the power supply circuit 150a, it is electrically connected to the feed wiring 141 or the feed wiring 141. When an abnormality occurs in the connected portion, the protection element 160 can simultaneously stop the power supply to the second terminal 132 by the feed wiring 141 and the power supply to the power supply circuit 150a by the feed wiring 141. That is, the protection element 160 also serves as overload protection in the feed wiring 141 and protection of the power supply circuit 150a.

As a result, even if an abnormality occurs on the feed wiring 141 due to an overcurrent generated in the feed wiring 141, electronic components or the like existing on the wiring path beyond the protection element 160 (circuit constituting the power supply circuit 150a). It is possible to prevent the overcurrent from being transmitted to the element 150, the electronic component of the power supply destination of the second terminal 132, and the like). Therefore, it is possible to protect all the electronic components existing on the wiring path beyond the protection element 160. That is, it is possible to prevent the electronic components and the like existing ahead of the protection element 160 from being destroyed or deteriorated due to an overcurrent or the like.

Further, when an abnormality occurs in the power supply circuit 150a or the light emitting element 120 as a portion electrically connected to the feed wiring 141, the driving of the LED module 100 can be safely stopped.

As described above, according to the present embodiment, the LED module 100 having excellent reliability can be realized even if the feed wiring 141 is provided.

Further, the LED module 100 in the present embodiment includes a branch wiring 142 branched from a part (branch point BP) of the feed wiring 141 and electrically connected to the power supply circuit 150a, and the protection element 160 includes a branch wiring 142. It is inserted on the wiring path between the first terminal 131 and the branch point BP on the feed wiring 141.

As a result, when an overcurrent occurs in the feed wiring 141, it is possible to protect the electronic components existing on the wiring path ahead of the branch point BP of the feed wiring 141.

Further, in the LED module 100 of the present embodiment, the light emitting element 120 is also arranged on the substrate 110 on which the circuit element 150 is arranged. That is, the circuit element 150 and the light emitting element 120 are arranged on the same substrate 110.

Thereby, the circuit element 150 and the light emitting element 120 can be mounted on the substrate 110 in the same process. For example, the circuit element 150 and the light emitting element 120 can be simultaneously mounted on the substrate 110 by the reflow process.

Further, in the LED module 100 of the present embodiment, the substrate 110 is long, a plurality of light emitting elements 120 are arranged along the longitudinal direction of the substrate 110, and the plurality of circuit elements 150 are arranged in a row of the light emitting elements 120. They are arranged in parallel.

By arranging the plurality of circuit elements 150 so as to be parallel to the row of the plurality of light emitting elements 120 in this way, a long line-shaped light source can be realized. Further, when the LED module 100 is housed in the housing 200, the height of the housing 200 can be lowered, so that a long and thin lighting device 1 can be realized.

Further, in the LED module 100 of the present embodiment, the plurality of circuit elements 150 are located between the feed wiring 141 and the row of the light emitting elements 120.

As a result, it is possible to easily realize that the AC power supplied via the feed wiring 141 is converted into DC power by the power supply circuit 150a composed of the plurality of circuit elements 150 and supplied to the light emitting element 120. That is, the layout of the wiring 140 that supplies electric power to the light emitting element 120 can be simplified.

Further, in the LED module 100 of the present embodiment, the protection element 160 is an overcurrent protection element. As the overcurrent protection element, for example, a fuse can be used.

As a result, when an overcurrent occurs in the feed wiring 141, the feed wiring 141 is cut off by the protection element 160, so that the power supply by the feed wiring 141 can be stopped.

(Other variants)
The lighting device 1 and the LED module 100 according to the present invention have been described above based on the embodiments, but the present invention is not limited to the above embodiments.

For example, in the above embodiment, one LED module 100 is arranged in one housing 200, but the present invention is not limited to this, and a plurality of LED modules 100 may be arranged in one housing 200. In this case, a plurality of LED modules 100 may be arranged so as to be adjacent to each other along the longitudinal direction of the LED module 100 (longitudinal direction of the substrate 110), and the two adjacent LED modules 100 may be connected by the electric wire 400. As a result, each LED module 100 can be relayed and AC power can be sequentially transmitted to the adjacent LED module 100. In the lighting device configured in this way, when an overcurrent occurs in the feed wiring 141 of any one of the plurality of LED modules 100, the protection element 160 can protect the entire plurality of LED modules.

Further, in the above embodiment, the two lighting devices 1 are connected, but three or more lighting devices 1 may be connected. As a result, as shown in FIG. 6, AC power can be sequentially transmitted to the adjacent lighting device 1 by relaying each lighting device 1. Even in this configuration, when an overcurrent occurs in the feed wiring 141 of any one of the plurality of lighting devices 1, the protection element 160 can protect the entire plurality of lighting devices 1. The lighting device 1 is not limited to the case where two or more are connected, and only one lighting device 1 may be used.

Further, the lighting devices 1 are not limited to each other or the LED modules 100 are connected to each other. For example, the lighting device 1 or the LED module 100 may be connected to another electronic device by an electric wire. As a result, AC power can be supplied from the lighting device 1 or the LED module 100 to other electronic devices by the feed wiring 141.

Further, in the above embodiment, the plurality of circuit elements 150 form a power supply circuit 150a for causing the light emitting element 120 to emit light, but the present invention is not limited to this, and a circuit for other purposes may be formed. That is, the LED module may be configured such that the feed wiring 141 supplies AC power to circuits other than the power supply circuit 150a.

Further, in the above embodiment, the LED module 100 is an SMD type in which an SMD type LED element is used as the light emitting element 120, but the present invention is not limited to this, and the LED module 100 may be a COB type. In this case, an LED chip (bare chip) may be used as the light emitting element 120, a plurality of LED chips may be arranged on the substrate 110, and the plurality of LED chips may be collectively sealed with a line-shaped sealing member.

Further, in the above embodiment, the light emitting element 120 is an LED, but the present invention is not limited to this. For example. As the light emitting element 120, other solid-state light emitting elements such as a semiconductor laser or an organic EL (Electro Luminescence) may be used.

Further, in the above embodiment, the circuit element 150 and the light emitting element 120 are mounted on the same substrate 110, but the present invention is not limited to this. For example, the substrate on which the circuit element 150 is mounted and the substrate on which the light emitting element 120 is mounted may be separately separated. In this case, the substrate on which the circuit element 150 is mounted (circuit board) and the substrate on which the light emitting element 120 is mounted (light source substrate) may be placed side by side on the bottom of the housing 200.

In addition, a form obtained by applying various modifications to the embodiments and modifications that can be conceived by those skilled in the art, and components and functions in the embodiments and modifications are arbitrarily combined without departing from the spirit of the present invention. The form realized by the above is also included in the present invention.

1 Lighting device 100 LED module (light emitting device)
110 Board 120 Light emitting element 131 1st terminal 132 2nd terminal 141 Feed wiring 142 Branch wiring 150 Circuit element 150a Power supply circuit (circuit)
160 Protective element

Claims (5)

With the board
Light emitting element and
The first terminal and the second terminal arranged on the substrate,
A pair of feed wirings provided on the board for sending AC power supplied to the first terminal to the second terminal, and
A plurality of circuit elements constituting a circuit for generating electric power for causing the light emitting element to emit light by the AC power supplied to the first terminal, and
A protective element inserted on the wiring path of the pair of feed wires between the first terminal and the circuit ,
A branch wiring provided on the substrate and branched from one part of the pair of feed wirings and electrically connected to the circuit is provided.
The light emitting element, the plurality of circuit elements, the first terminal, the second terminal, the pair of feed wirings, and the protective element are arranged on the same surface of the substrate.
The plurality of circuit elements are located between the pair of feed wires and the row of light emitting elements.
The protective element is inserted on the wiring path between the first terminal and the part of one of the pair of feed wires.
The branch wiring is provided so as to straddle the other of the pair of feed wirings.
Yes,
Light emitting device. The substrate has a long shape and is
A plurality of the light emitting elements are arranged along the longitudinal direction of the substrate.
The plurality of circuit elements are arranged so as to be parallel to the row of the light emitting elements.
The light emitting device according to claim 1. The protective element is an overcurrent protection element.
The light emitting device according to claim 1 or 2. The overcurrent protection element is a fuse.
The light emitting device according to claim 3. The light emitting device according to any one of claims 1 to 4 is provided.
Lighting device.

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