JP2018101595A - Light emitting device and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting device in which reliability with respect to abnormality in a feed wire is high.SOLUTION: A light emitting device includes: a substrate 110; a light emitting element 120; a first terminal 131 and a second terminal 132 arranged on the substrate 110; a feed wire 141, provided on the substrate 110, for transmitting AC power supplied to the first terminal 131 to the second terminal 132; a plurality of circuit elements 150 for constituting a circuit for generating power for allowing the light emitting element 120 to emit light by the AC power supplied to the first terminal 131; and a protection element 160 inserted on a wiring path of the feed wire 141 between the first terminal 131 and the circuit.SELECTED DRAWING: Figure 5

Description

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

  2. Description of the Related Art In recent years, lighting devices (LED lighting) using LEDs (Light Emitting Diodes) are rapidly spreading from the viewpoint of energy saving. Conventionally, as this kind of LED illumination, a long illuminating device including a long casing and an LED module arranged in the casing is known (for example, Patent Document 1). The LED module includes, for example, a substrate and an LED element mounted on the substrate.

JP 2012-84367 A

  LED lighting includes a power supply built-in illumination device that incorporates a power supply circuit composed of a plurality of circuit elements. In the power supply built-in lighting device, the LED module is turned on by converting the supplied AC power into DC power by a power supply circuit.

  When a plurality of such built-in power source lighting devices are connected and used, there is a problem in a method of feeding power to adjacent lighting devices.

  In addition, an LED module in which a circuit element that constitutes a power supply circuit together with an LED element is mounted on a substrate has been studied for a lighting apparatus with a built-in power supply. In such an LED module, the LED element is lit by converting the supplied AC power into DC power by a circuit element mounted on the LED module.

  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 feeding power to adjacent LED modules.

  In order to solve these problems, it is conceivable to form a feed wiring for sending 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 power supply built-in lighting devices are connected and used, the AC power supplied to one lighting device can be supplied to the other lighting device by the LED module feed wiring. . 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 LED module feed wiring 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 generated in an electronic component such as a circuit element electrically connected to the feed wiring. There is a risk that the electronic components may be broken or deteriorated, and the light emitting device having the feed wiring has a problem that the reliability is low.

  SUMMARY An advantage of some aspects of the invention is to provide a light emitting device and a lighting device with high reliability.

  In order to achieve the above object, one embodiment of a light-emitting device according to the present invention includes a substrate, a light-emitting element, a first terminal and a second terminal disposed on the substrate, and the first substrate. A plurality of circuit elements constituting a feed wiring for sending 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 protection element inserted on a wiring path of the feed wiring between the first terminal and the circuit.

  One embodiment of a lighting device according to the present invention includes the above light-emitting device.

  A highly reliable light-emitting device and lighting device can be realized.

It is a perspective view which shows the external appearance of the illuminating device which concerns on embodiment. It is a disassembled perspective view of the illuminating device which concerns on embodiment. It is sectional drawing of the illuminating device which concerns on embodiment. It is a top view of the LED module in the illuminating device which concerns on embodiment. It is a figure which shows the circuit structure of the LED module in the illuminating device which concerns on embodiment. It is a figure which shows a circuit structure when connecting the two illuminating devices which concern on embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Therefore, numerical values, shapes, materials, components, component positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily shown strictly. In each figure, substantially the same configuration is denoted by the same reference numeral, and redundant description may be omitted or simplified.

  In the present specification and drawings, the X axis, the Y axis, and the Z axis represent the three axes of the three-dimensional orthogonal coordinate system. In the present embodiment, the Z axis direction is the vertical direction and the Z axis is perpendicular to the Z axis. This direction (the 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 illuminating device 1 which concerns on embodiment is demonstrated using FIGS. 1-3. FIG. 1 is a perspective view illustrating an appearance of a lighting device 1 according to an embodiment. FIG. 2 is an exploded perspective view of the illumination device 1. FIG. 3 is a cross-sectional view of the illumination device 1.

  The lighting device 1 shown in FIG. 1 is installed, for example, in a living room or bedroom of a house and used as indirect lighting such as cove lighting or cornice lighting, or installed in a kitchen or the like and used as kitchen lighting or the like. In addition, you may use the illuminating device 1 as main illuminations, such as a base light installed in a ceiling etc. instead of indirect illumination.

  As shown in FIG. 1, the illuminating device 1 is a thin and long illuminating device (slim line illumination) as a whole, and emits line-shaped illumination light. Although the whole shape of the illuminating device 1 in this Embodiment is a flat substantially rectangular parallelepiped, it is not restricted 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. In addition, the aspect ratio (horizontal / vertical) of the illumination device 1 when viewed from the side along the Y-axis direction is about 1 or more and 4 or less.

  As shown in FIG.1 and FIG.2, the illuminating device 1 is provided with the lighting fixture 2 and the attachment member 3 for attaching the lighting fixture 2 to construction materials, such as a ceiling or a wall.

  The lighting fixture 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 attachment member 3 is substantially the same as that of the lighting fixture 2 (housing 200).

  When installing the luminaire 2 on the construction material, first, the attachment member 3 is fixed to the construction material with screws 4 (see FIG. 2). Next, as shown in FIG. 3, the claw part 3a is hooked on the groove part 2a by hooking the groove part 2a of the lighting fixture 2 on the claw part 3a of the mounting member 3 fixed to the construction material. Thereby, the lighting fixture 2 can be installed in the construction material. In addition, the claw part 3a has a structure in which, for example, the cross-sectional shape is T-shaped and is fitted in the groove 2a.

  Hereinafter, each structural member of the lighting fixture 2 in embodiment is demonstrated in detail using FIG.4 and FIG.5, referring FIGS. 1-3. FIG. 4 is a plan view of the LED module 100 in the illumination 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 a housing 200. The light of the LED module 100 passes through the second housing 220 of the housing 200 and is emitted to the outside.

  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 the short side is retracted so that a part of corners are cut out. Specifically, the substrate 110 is a long rectangle in which corners at both ends of one long side are cut out in a rectangular shape. As an example, the substrate 110 has a long side (long side not cut out) having a length of about 295 mm and a width of about 31 mm. However, it is not limited to this. Further, the shape of the substrate 110 in plan view is not limited to the rectangular shape shown in FIGS. 2 and 4, and may be a rectangular shape without being 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 substrate based on resin, a ceramic substrate made of ceramic, or a metal base substrate based on metal.

  As the resin substrate, for example, a glass epoxy substrate (CEM-3, FR-4, etc.) made of glass fiber and epoxy resin, or a substrate (FR-1 etc.) made of paper phenol or paper epoxy is 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 whose surface is coated with an insulating film can be used. The substrate 110 is not limited to a rigid substrate, and may be a flexible flexible substrate made of polyimide or the like.

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

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

[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 straight line shape (linear shape), but are not limited thereto, and may be arranged in a line shape such as a curved shape or a wave shape. The plurality of light emitting elements 120 arranged in a line function as a line light source that emits light along the line.

  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. The plurality of light emitting elements 120 being arranged along the longitudinal direction of the substrate 110 is not limited to the case where the row of the plurality of light emitting elements 120 is parallel to the long side of the substrate 110. It means that they are arranged in an arbitrary direction from one end of the direction to the other end. The element rows of the light emitting elements 120 configured by the plurality of line-shaped light emitting elements 120 are not limited to one row, and may be a plurality of rows. Moreover, although the several light emitting element 120 is arrange | positioned at equal intervals, it is not restricted to this.

  Each light emitting element 120 is an SMD type LED element in which an LED chip is packaged, and is a resin or ceramic white 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 enclosed in the recess of the container. The sealing member is made of a translucent resin material such as 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 with a predetermined DC power, and is a bare chip that emits monochromatic 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 emits fluorescence using 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 including the blue LED chip and the yellow phosphor. Specifically, the yellow phosphor absorbs a part of the blue light emitted from the blue LED chip and is excited to emit yellow light, and the yellow light and the blue light not absorbed by the yellow phosphor are mixed. White light.

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

[First terminal, second terminal]
As shown in FIGS. 2 and 4, the first terminal 131 and the second terminal 132 are disposed on the substrate 110. The first terminal 131 is disposed at one end in the longitudinal direction of the substrate 110, and the second terminal 132 is disposed at the other end in the longitudinal direction of the substrate 110. Specifically, the first terminal 131 is disposed at one end in the longitudinal direction of the substrate 110 corresponding to the shorter long side. The second terminal 132 is disposed at the other end 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 substrate 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 an L-side terminal 131a and the other is an N-side terminal 131b. One of the pair of second terminals 132 is an L-side terminal 132a, and the other is an N-side terminal 132b. Note that each of the first terminal 131 and the second terminal 132 may be configured by 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. For example, the first terminal 131 is electrically connected to an external commercial power source and is connected to the electric wire 400 (see FIG. 2). Thereby, the AC power of the commercial power source is input to the first terminal 131. In this case, the pair of electric wires 400 are electrically and mechanically connected to the pair of first terminals 131 (the L-side terminal 131a and the 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 power to the outside of the LED module 100. That is, the second terminal 132 is a power transmission terminal that transmits 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 from the second terminal 132 to the outside through the electric wire.

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

  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 are the same. Potential.

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

  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 AC 100V AC power is supplied to the first terminal 131, AC 100V AC power is supplied to the power supply circuit 150a. That is, the first terminal 131 also functions as a power supply terminal that supplies AC power to the power supply circuit 150a.

  Thus, in the LED module 100 according to 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 is supplied to the power supply circuit 150 a. Power is supplied.

[wiring]
As shown in FIG. 2, wiring 140 is provided on the substrate 110. The wiring 140 is a pattern wiring formed on the substrate 110 in a predetermined pattern. The wiring 140 is 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 patterned simultaneously 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 AC power supplied to the first terminal 131 to the second terminal 132.

  The feed wiring 141 is composed of two wires, a first feed wiring 141a and a second feed wiring 141b. Each of the first feed wiring 141a and the second feed wiring 141b is formed in a straight line with a constant width. In the present embodiment, the first feed wiring 141 a and the second feed wiring 141 b 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 wires 141 (the first feed wire 141a and the second feed wire 141b), the first feed wire 141a is a wire located outside, and the second feed wire 141b is a wire located inside. Note that the length of the feed wiring 141 is the length of the shorter long side at the maximum, and is shorter than the length of the longer long side.

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

  Specifically, the branch wiring 142 includes 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 branches in a direction perpendicular to the longitudinal direction of the first feed wiring 141a. Further, the second branch wiring 142b branches in a direction perpendicular to the longitudinal direction of the second feed wiring 141b in parallel with the first branch wiring 142a.

  For this reason, the 1st branch wiring 142a branched from the 1st sending wiring 141a located outside crosses the 2nd sending wiring 141b. In this case, the first branch wiring 142a is provided so as to straddle the second feeding wiring 141b so as not to be electrically connected to the second feeding 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 are electrically connected. It can be provided on the substrate 110 so as not to be connected. Alternatively, a portion of the first branch wiring 142a that intersects the second feed wiring 141b is cut (that is, without forming a metal wiring of a pattern), and the ends of the cut first branch wiring 142a are connected to a jumper such as a wire. By connecting with a line, 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 drawing, the wiring 140, in addition to the feed wiring 141 and the branch wiring 142, electrically connects the plurality of light emitting elements 120, electrically connects the plurality of circuit elements 150, and the light emitting element. Pattern wiring for electrically connecting 120 and the circuit element 150 may be included. 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 (breakdown voltage) of the substrate 110 can be improved and the wiring 140 can be protected.

[Circuit elements]
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.

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

  As shown in FIGS. 4 and 5, the plurality of circuit elements 150 include electronic components (circuit parts) constituting a power supply circuit 150 a that generates 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 alternating current power supplied to the first terminal 131 and emit light from the light emitting element 120. To direct current power for 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. DC power generated by the plurality of circuit elements 150 constituting the power supply circuit 150 a 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 resistive element such as a resistor, a rectifier element, a noise filter, a diode, or a semiconductor element such as an integrated circuit element. It is.

  The plurality of circuit elements 150 may include those that do not constitute the power supply circuit 150a. For example, the plurality of circuit elements 150 may include a control circuit element for controlling the light emission state of the light emitting element 120 or a communication circuit element for performing communication with other devices.

[Protective element]
As shown in FIGS. 2, 4, and 5, a protective element 160 is disposed 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 in the first feed wiring 141a connected to the L-side terminal 131a of the first terminal 131, but is not limited thereto. 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. It 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 at a location electrically connected to the feed wiring 141. In the present embodiment, since the protective 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 simultaneously 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. be able to.

  The protection element 160 is, for example, an overcurrent protection element. Thus, 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.

  For example, a fuse can be used as the overcurrent protection element. Thereby, when an overcurrent occurs in the feed wiring 141, the wiring path of the feed wiring 141 can be interrupted by the fuse, and the power supply by the feed wiring 141 can be stopped. The fuse may be an electronic component mounted on the substrate 110, or a pattern fuse formed on the substrate 110. For example, the pattern fuse may have 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 due to overcurrent, but may be one that cuts off the wiring path of the feed wiring 141 by temperature. In addition, the protective element 160 removes an electronic component or the like existing on the wiring path ahead of the protective element 160 (such as the circuit element 150 constituting the power supply circuit 150a and the electronic component that is the power supply destination of the second terminal 132) from the overcurrent. The power supply circuit 150a and the like may be protected from abnormal temperatures. For example, a PCT thermistor may be used as the protection element 160. Further, as the protection element 160, an electronic component or the like existing on the wiring path ahead of the protection element 160 may be protected from a surge.

[Case]
As shown in FIGS. 1 to 3, the housing 200 is an outer housing that forms an outer shell of the lighting fixture 2, and houses the LED module 100. The housing 200 includes 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 casing 210 and the second casing 220 are integrally formed by two-color molding, but the present invention is not limited to this. For example, the 1st housing | casing 210 and the 2nd housing | casing 220 are produced separately, and these may be fixed mutually with a latching structure, an adhesive agent, a screw | thread etc.

  The first housing 210 is a support member (base) that supports the LED module 100 (substrate 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 is shielded by reflecting light. In the present embodiment, the first housing 210 is made of white polycarbonate. Note that the first housing 210 may be made of a metal material such as aluminum or iron instead of the resin material. Further, the material of the first housing 210 is not limited to light shielding by reflecting light, but may be light shielding by absorbing light. In this case, for example, the first housing 210 may be made of a black insulating resin material.

  The first casing 210 has a first groove portion 211 into which one end portion in the width direction (X-axis direction) of the substrate 110 is inserted, and a first groove portion into which the other end portion in the width direction of the substrate 110 is inserted. 2 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 in the housing 200 and extend in the longitudinal direction of the housing 200. Accordingly, the light emitting element 120 and the circuit element 150 are mounted on the substrate 110 to form a module, and both end portions of the modularized substrate 110 are inserted into the first groove portion 211 and the second groove portion 212, so that the substrate 110 is attached to the housing 200. The LED module 100 can be housed in the housing 200 by sliding along the longitudinal direction and pushing it back.

  The first housing 210 is provided with a partition plate 213. The partition plate 213 partitions the plurality of light emitting elements 120 (light emitting units) and the plurality of circuit elements 150 (power supply units), and includes a plurality of rows of the light emitting elements 120 and a plurality of circuit elements 150 in a top view. , And extends along the longitudinal direction of the substrate 110. In this manner, by providing the partition plate 213, the light emitted from the light emitting element 120 proceeds to the partition plate 213 side even if the plurality of light emitting element 120 columns and the plurality of circuit element 150 columns are arranged in parallel. The light to be blocked is uniformly shielded by the partition plate 213. Thereby, 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 and shadows are formed, and the lighting fixture 2 ( It can suppress that the light distribution characteristic of the illuminating device 1) deteriorates. For example, the illuminating device 1 which irradiates uniform linear illumination light can be obtained. Furthermore, the strength of the housing 200 can be improved by providing the partition plate 213.

  The second housing 220 is a translucent cover that transmits light emitted from the light emitting element 120. The 2nd housing | casing 220 is comprised by translucent materials, such as translucent resin materials or glass materials, such as an acryl or a polycarbonate, for example.

  The second housing 220 may further have a light diffusing property (light scattering property). By providing the second casing 220 with light diffusibility, light from the light emitting element 120 that is a highly directional LED light source can be scattered. (Luminance unevenness) can be suppressed.

  When the second casing 220 is provided with light diffusibility, a second casing 220 is manufactured by dispersing a light diffusing material such as light reflecting fine particles in a translucent resin material, or a second casing made of a transparent member. By forming a milky white light diffusing film including a light diffusing material or the like on the surface (inner surface or outer surface) of 220, the second housing 220 can be provided with light diffusibility. Alternatively, instead of using a light diffusing material, fine irregularities are formed on the surface of the second housing 220 made of a transparent member by applying a texture or the like, or dots are formed on the surface of the second housing 220 made of a transparent member. The second casing 220 may be given light diffusibility by printing a pattern.

  In the present embodiment, the second housing 220 is a light transmissive cover (diffusion cover) made of polycarbonate and having light diffusibility. Note that 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 condensing function or a diverging lens function.

  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 a continuous surface without a step. . In the present embodiment, the second housing 220 has an L-shaped cross section, but is not limited thereto.

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

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

  In the present embodiment, both the two end covers 300 are provided with insertion holes through which the electric wires 400 are inserted. As a result, by connecting the electric wire 400 inserted through the insertion hole of the end cover 300 on the second terminal 132 side to the second terminal 132, the AC supplied from the first terminal 131 using the electric wire 400 as a power supply line. Electric power can be output from the second terminal 132 via the electric wire 400. That is, when connecting the some illuminating device 1, alternating current power can be supplied to the adjacent illuminating device 1 using the electric wire 400 connected to the 2nd terminal 132. FIG.

  The end cover 300 is fixed to the housing 200 with, for example, an adhesive, a screw, or a claw structure. 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, the usage example of the illuminating device 1 which concerns on embodiment is demonstrated using FIG. FIG. 6 is a diagram illustrating a circuit configuration when two lighting devices 1 according to the embodiment are connected.

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

  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. Thereby, in the illuminating device 1a, the alternating current power supplied to the first terminal 131 is supplied to the power supply circuit 150a by the branch wiring 142 and converted into direct current 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 irradiated from the lighting 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. 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. Thereby, like the illuminating device 1a, also in the illuminating device 1b, the light emitting element 120 light-emits and illumination light is irradiated from the illuminating device 1b.

  Thus, when alternating current power is supplied to the illuminating device 1a, illumination light is irradiated from the illuminating device 1a and illumination light is also irradiated from the illuminating device 1b. Thereby, the line-shaped illumination light of about twice the length of the line-shaped illumination light irradiated by one illumination device 1 is irradiated.

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

  Accordingly, when an abnormality occurs in the feed wiring 141 or an abnormality occurs at a location 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 occurring 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 to the power supply circuit 150a (circuit element 150) by 141 is stopped.

  Further, when an abnormality such as an overcurrent occurs on the power supply circuit 150a or the light emitting element 120 as a place electrically connected to the feed wiring 141, the protection element 160 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 this embodiment, since the protective element 160 is inserted on the wiring path of the feed wiring 141 between the first terminal 131 and the power supply circuit 150a, the feed wiring 141 or the feed wiring 141 is electrically connected. 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. In other words, the protection element 160 serves both 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 occurring in the feed wiring 141 or the like, electronic components or the like (circuits constituting the power supply circuit 150a) existing on the previous wiring path from the protection element 160 It is possible to avoid overcurrent from being transmitted to the power supply destination electronic component of the element 150 and the second terminal 132. Therefore, it is possible to protect all electronic components existing on the wiring path ahead of the protection element 160. That is, it is possible to suppress destruction or deterioration of an electronic component or the like existing ahead of the protection element 160 due to overcurrent or the like.

  Further, when an abnormality occurs in the power supply circuit 150a or the light emitting element 120 as a place 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, it is possible to realize the LED module 100 having excellent reliability even if the feed wiring 141 is provided.

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

  Thereby, when an overcurrent occurs in the feed wiring 141, it is possible to protect electronic components existing on the previous wiring path from the branch point BP of the feed wiring 141.

  In the LED module 100 according to 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 disposed 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 a reflow process.

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

  In this manner, by arranging the plurality of circuit elements 150 so as to be arranged in parallel to the row of the plurality of light emitting elements 120, it is possible to realize a long line light source. Further, when the LED module 100 is housed in the housing 200, the height of the housing 200 can be reduced, so that the long and thin lighting device 1 can be realized.

  In the LED module 100 according to 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.

  Accordingly, 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 150 a configured by the plurality of circuit elements 150 and supplied to the light emitting element 120. That is, the layout of the wiring 140 that supplies power to the light emitting element 120 can be simplified.

  In the LED module 100 according to the present embodiment, the protection element 160 is an overcurrent protection element. For example, a fuse can be used as the overcurrent protection element.

  Thereby, when the overcurrent is generated 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 variations)
As mentioned above, although the illuminating device 1 and the LED module 100 which concern on this invention were demonstrated based on embodiment, this invention is not limited to the said embodiment.

  For example, in the above-described embodiment, one LED module 100 is disposed in one housing 200. However, the present invention is not limited to this, and a plurality of LED modules 100 may be disposed in one housing 200. In this case, the plurality of LED modules 100 may be arranged so as to be adjacent 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. Thereby, AC power can be sequentially transmitted to the adjacent LED module 100 by relaying each LED module 100. In the illuminating device configured as described above, when an overcurrent occurs in any of the feed wirings 141 of the plurality of LED modules 100, the entire plurality of LED modules can be protected by the protection element 160.

  Moreover, in the said embodiment, although the two illuminating devices 1 were connected, you may connect the 3 or more several illuminating devices 1. FIG. Thereby, as shown in FIG. 6, the AC power can be sequentially transmitted to the adjacent lighting devices 1 by relaying each lighting device 1. Even in such a configuration, when an overcurrent occurs in any of the feed wires 141 of the plurality of lighting devices 1, the entire plurality of lighting devices 1 can be protected by the protection element 160. In addition, you may use only one illuminating device 1 not only when connecting two or more.

  Moreover, it is not restricted to connecting the illuminating devices 1 or LED modules 100. For example, you may connect the illuminating device 1 or the LED module 100, and another electronic device with an electric wire. Thereby, AC power can be supplied from the lighting device 1 or the LED module 100 to another electronic device by the feed wiring 141.

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

  Moreover, in the said embodiment, although the LED module 100 was a SMD type which used the SMD type LED element as the light emitting element 120, it is not restricted to this, A COB type may be sufficient. 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.

  Moreover, in the said embodiment, although the light emitting element 120 was set as LED, it is not restricted to this. For example. As the light emitting element 120, other solid light emitting elements such as a semiconductor laser or an organic EL (Electro Luminescence) may be used.

  Moreover, in the said embodiment, although the circuit element 150 and the light emitting element 120 were mounted in the same board | substrate 110, it is not restricted 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 separated separately. 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, any combination of the components and functions in the embodiment and the modification can be arbitrarily combined without departing from the gist of the present invention, and the form obtained by making various modifications conceived by those skilled in the art with respect to the embodiment and the modification. The embodiment realized by the above is also included in the present invention.

1 Lighting device 100 LED module (light emitting device)
DESCRIPTION OF SYMBOLS 110 Board | substrate 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 Protection element

Claims (8)

A substrate,
A light emitting element;
A first terminal and a second terminal disposed on the substrate;
A feed wiring provided on the substrate and for sending AC power supplied to the first terminal to the second terminal;
A plurality of circuit elements constituting a circuit for generating power for causing the light emitting elements to emit light by the AC power supplied to the first terminal;
A protection element inserted on a wiring path of the feed wiring between the first terminal and the circuit;
Light emitting device. Provided on the substrate, comprising a branch wiring branched from a part of the feed wiring and electrically connected to the circuit,
The protection element is inserted on the wiring path between the first terminal and the part of the feed wiring.
The light emitting device according to claim 1. The light emitting element is disposed on the substrate.
The light emitting device according to claim 1. The substrate is elongate,
A plurality of the light emitting elements are arranged along the longitudinal direction of the substrate,
The plurality of circuit elements are arranged in parallel with the row of the light emitting elements.
The light emitting device according to claim 3. The light emitting device according to claim 4, wherein the plurality of circuit elements are located between the feed wiring and the row of the light emitting elements. The protection element is an overcurrent protection element.
The light emitting device according to claim 1. The overcurrent protection element is a fuse.
The light emitting device according to claim 6. The light-emitting device according to claim 1 is provided.
Lighting device.

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