JP6986714B2 - Cap members, manufacturing methods for cap members, lighting equipment, and showcases - Google Patents

Description

The present disclosure relates to cap members, methods of manufacturing cap members, lighting devices, and showcases.

Showcases for displaying goods are widely used mainly in stores such as supermarkets and convenience stores. Generally, a lighting device for illuminating the display room or the front of the showcase is installed inside the showcase. In recent years, showcases have been developed that employ LED lighting devices that use LEDs (Light Emitting Diodes) as light emitting elements.

Such a showcase is disclosed in, for example, Patent Document 1. Patent Document 1 discloses a product display device having an LED element arranged inside a pipe member and having a lighting device in which both ends of the pipe member are closed by cap-shaped sockets.

Japanese Unexamined Patent Publication No. 2018-006211

For example, in a showcase equipped with a refrigerating device or a refrigerating device, moisture may be generated inside due to dew condensation or the like. In order to prevent the generated moisture from entering the inside of the lighting device, it is necessary to give sufficient waterproof performance to the cap member that closes both ends of the lighting device.

Conventionally, as a method of giving waterproof performance to a cap member of a lighting device, for example, there is a method of using screwing or an adhesive. However, for example, when screwing is used, it is difficult to obtain sufficient waterproof performance. Further, for example, when an adhesive having waterproof performance is used, the adhesive tends to deteriorate over time, and it is difficult to maintain sufficient waterproof performance for a long period of time. Further, the adhesive may change color due to deterioration over time, and the color of the light transmitted near the cap member may change.

In view of such circumstances, it is an object of the present disclosure to provide a cap member, a method for manufacturing the cap member, a lighting device, and a showcase capable of achieving both sufficient waterproof performance and good appearance. ..

The cap member of the present disclosure is a cap member attached to an end portion of a housing containing a substrate on which a light emitting element is arranged, and when the cap member is attached to the housing, the end portion of the housing is attached. An outer edge member that comes into contact, a wall member that separates the outside and the inside of the housing, and a power cable that supplies power to the light emitting element are provided on the wall member in order to pass the power cable from the outside to the inside of the housing. The power cable is supported by covering the circumference of the power cable with the cap body having the holes provided in close contact with the power cable, and the cap member is fitted into the hole of the cap body by high frequency welding. have a, a cable support member is welded with the cap body, around the hole, the welding ribs for welding and the cable support member and the cap body by melting during the high-frequency welding Have.
Further, the cap member of the present disclosure is a cap member attached to an end portion of a housing in which a substrate in which a light emitting element is arranged is housed, and the end of the housing is attached when the cap member is attached to the housing. The wall member for passing the outer edge member in contact with the portion, the wall member for separating the outside and the inside of the housing, and the power cable for supplying power to the light emitting element from the outside to the inside of the housing. The power cable is supported by covering the circumference of the power cable with the cap body provided with the hole provided in the cap body in close contact with the power cable, and the power cable is fitted into the hole of the cap body and subjected to high-frequency welding. When the power cable has a cap member and a cable support member to be welded and the power cable is a parallel wire in which a two-core electric wire arranged in parallel is covered with an insulating member, the cable support member is the parallel wire. Has a bifurcated bifurcated portion inside to separate the two cores into each.

The method for manufacturing a cap member of the present disclosure is a method for manufacturing a cap member attached to an end portion of a housing of a lighting device accommodating a substrate in which a light emitting element is arranged, and the cap member is attached to the housing. wherein the outer edge member in contact with the end portion of the housing, and the wall member to isolate the outside and the inner portion of the housing, or outside of the housing a power cable for supplying power to the light emitting element when and the hole provided in said wall member to pass into et Internal, the cap body comprising a cable supporting member supporting the power cable around covered in close contact to the power cable of the power supply cable The cap member and the cable support member are welded by fitting and melting the welding ribs provided around the hole by high-frequency welding.
Further, the method for manufacturing a cap member of the present disclosure is a method for manufacturing a cap member attached to an end portion of a housing of a lighting device accommodating a substrate in which a light emitting element is arranged, and the cap member is attached to the housing. An outer edge member that comes into contact with the end of the housing when attached, a wall member that separates the outside and the inside of the housing, and a power cable that supplies power to the light emitting element are provided outside the housing. A cable support member that supports the power cable by covering the circumference of the power cable in close contact with the power cable is fitted in a cap body provided with a hole portion provided in the wall member for passing from the inside to the inside. When the cap member and the cable support member are welded by high-frequency welding, and the power cable is a parallel wire in which a two-core electric wire arranged in parallel is covered with an insulating member in the cable support member. The parallel lines are separated into each of the two cores by a bifurcated bifurcated portion provided inside the cable support member.

The lighting device of the present disclosure includes a light emitting element, a substrate on which the light emitting element is arranged, a housing for accommodating the substrate, and the cap member.

The showcase of the present disclosure has the above-mentioned lighting device.

According to the present invention, it is possible to achieve both sufficient waterproof performance and good appearance.

Plan view with a partially broken lighting device Cross-sectional view showing the inside of the housing of the lighting device Enlarged view of the connection part of the lighting device 2A is a perspective view of the end cap as viewed from the front side, FIG. 2B is a front view of the end cap, FIG. 2C is a perspective view of the end cap as viewed from the rear side, and FIG. 2D is a rear view of the end cap. FIG. 2E is a view of the end cap as viewed from above. 3A is a perspective view of the cap body as viewed from the front side, FIG. 3B is a front view of the cap body, FIG. 3C is a perspective view of the cap body as viewed from the back side, and FIG. 3D is a rear view of the cap body. FIG. 3E is a cross-sectional view taken along the line AA in FIG. 3D. 4A is a perspective view of the core as viewed from the front side, FIG. 4B is a front view of the core, FIG. 4C is a perspective view of the core as viewed from the rear side, and FIG. 4D is a rear view of the core. FIG. 4E is a partial perspective view of FIG. 4D as viewed from above. Enlarged plan view near the end cap of the luminaire Perspective view of the showcase where the lighting device was used Cross-sectional view of the showcase in the front-back direction

Hereinafter, each embodiment of the present disclosure will be described in detail with reference to the drawings. However, more detailed explanations than necessary, such as detailed explanations of already well-known matters and duplicate explanations for substantially the same configuration, may be omitted. It should be noted that the following description and referenced drawings are provided for those skilled in the art to understand the present disclosure and are not intended to limit the scope of the claims of the present disclosure.

<Explanation of lighting equipment>
The lighting device 100 according to the embodiment of the present disclosure will be described with reference to FIGS. 1A to 1C. 1A is a plan view in which the lighting device 100 is partially broken, FIG. 1B is a cross-sectional view showing the inside of the housing of the lighting device 100, and FIG. 1C is an enlarged view of a connection portion of the lighting device 100. In this specification, for convenience, the description will be given with the upper direction on the paper surface in FIG. 1B as the upper side and the lower direction on the paper surface in FIG. 1B as the lower side. In this case, in FIGS. 1A and 1C, the front side of the paper is up and the back of the paper is down.

As shown in FIGS. 1A to 1C, the lighting device 100 includes an LED 1, a mounting board 2, a housing 3, a power cable 4, a connector 5, a terminal portion 6, a connecting terminal 7, an electronic component 8, and an end cap 10. LED1 is an example of the light emitting element of the present disclosure. The end cap 10 is an example of the cap member of the present disclosure.

A plurality of LEDs 1 are mounted on the mounting board 2. As shown in FIG. 1C, the LED 1 includes an LED chip 1a, a package 1b, and a sealing portion 1c. The package 1b includes a recess for accommodating the LED chip 1a. The sealing portion 1c is filled in the recess so as to cover the LED chip 1a. The sealing portion 1c is made of a translucent sealing material. Examples of the translucent sealing material include silicone resin, epoxy resin, glass and the like. The sealing portion 1c contains a phosphor that is excited by the light emitted from the LED chip 1a and emits fluorescence.

The LED 1 can emit white light, for example, by mixing the blue light emitted from the LED chip 1a and the yellow light emitted from the phosphor. The LED 1 may be configured to emit not only white light but also, for example, light bulb-colored light by changing the type of the LED chip 1a or the phosphor.

The mounting board 2 has a rectangular flat plate shape and a long outer shape, and is housed inside the housing 3. In the following description, the surface of the mounting board 2 on the side on which the LED 1 is mounted is referred to as the first surface 21, and the surface on the opposite side thereof is referred to as the second surface 22.

In the mounting board 2, various wirings (not shown) are provided on the first surface 21 and / or the second surface 22. The wiring on the first surface 21 side and the wiring on the second surface 22 side are electrically connected by a through wiring (not shown) penetrating in the thickness direction. A resist film is formed on the mounting board 2 so as to cover the wiring except for the mounting surfaces such as the LED 1, the terminal portion 6, the connecting terminal 7, and the electronic component 8.

On the first surface 21, a plurality of LEDs 1 are mounted on the mounting substrate 2 in the central portion in the lateral direction along the major axis direction. As a method of mounting the LED 1 on the mounting board 2, for example, solder is used. In the mounting board 2, the LEDs 1 are arranged so as to be arranged at equal intervals. The plurality of LEDs 1 are electrically connected in series by wiring. The mounting board 2 is not limited to a configuration in which a plurality of LEDs 1 are electrically connected in series, and may be a configuration in which they are electrically connected in parallel or a configuration in which they are connected in series and parallel. Further, the number of LEDs 1 mounted on the mounting board 2 is not particularly limited in the present disclosure.

As shown in FIG. 1A, the terminal portion 6 is mounted on the first surface 21 side in the vicinity of the end portion of the mounting substrate 2 on the side close to the end cap 10 in the long axis direction. As shown in FIG. 1A, two terminal portions 6 are mounted along the lateral direction of the mounting board 2.

When the total length of the mounting board 2 is shorter than that of the housing 3, a plurality of mounting boards 2 may be connected to each other in the long axis direction and housed inside the housing 3. The fact that a plurality of mounting boards 2 are connected to each other means that the plurality of mounting boards 2 are electrically and physically connected to each other. The mounting boards 2 are connected to each other by the connecting terminal 7. Even when a plurality of mounting boards 2 are connected to each other, each LED 1 is arranged on the mounting board 2 so that the plurality of LEDs 1 mounted on the mounting board 2 are evenly spaced along the long axis direction. It is desirable to be there. Specifically, for example, it is desirable that the distance from the end of the mounting board 2 to the LED 1 near the end is about half the distance between the LEDs 1 adjacent to each other.

As the mounting substrate 2, for example, a glass epoxy resin substrate is used. The present invention is not limited to this, and as the mounting substrate 2, for example, a ceramic substrate, a metal-based printed wiring board, or the like may be used.

The housing 3 has a long hollow shape (cylindrical shape), and the mounting board 2 is housed inside the housing 3. Therefore, the housing 3 is formed so as to be longer than the mounting board 2 in the long axis direction than at least one mounting board 2. The housing 3 has a light emitting portion 31, a pair of side walls 32, a guide portion 33, and a bottom wall 34.

The light emitting unit 31 is provided on the first surface 21 side of the mounting substrate 2 so that the light emitted from the LED 1 can be emitted to the outside, and has translucency with respect to the light emitted from the LED 1. .. The light emitting portion 31 has a substantially semi-cylindrical outer shape.

The pair of side walls 32 are integrally formed with the light emitting portion 31 so as to extend from both ends of the light emitting portion 31. A guide portion 33 in contact with the mounting substrate 2 is formed on the side wall 32. The mounting board 2 is housed inside the housing 3 in a state where the LED 1 faces the light emitting portion 31 and both end edges in the lateral direction are in contact with the guide portion 33.

The bottom wall 34 is formed on the side of the housing 3 facing the light emitting portion 31. When the mounting board 2 is housed inside the housing 3, the bottom wall 34 faces the second surface 22 of the mounting board 2. The mounting board 2 is held by the bottom wall 34 and the guide portion 33 so as not to move inside the housing 3.

The housing 3 is made of a translucent hard resin. Examples of the material of the housing 3 include a polycarbonate resin, an acrylic resin, and the like. The housing 3 can be formed, for example, by extrusion molding. The housing 3 may be formed by two-color molding. The housing 3 may be formed by including a light diffusing material in a translucent resin material. The housing 3 has a structure in which the light emitting portion 31, the side wall 32, the guide portion 33, and the bottom wall 34 are integrally formed, but the present disclosure is not limited to this. In the housing 3, for example, the light emitting portion 31 is formed of a translucent material so that at least the light from the LED 1 can be emitted to the outside from the light emitting portion 31, and the housing 3 is made of other materials such as aluminum except for the light emitting portion 31. It may be formed by.

The power cable 4 is a coated electric wire whose core wire is covered with an insulating coating member (vinyl or the like), and supplies electric power from the outside to the LED 1. One end of the power cable 4 is electrically connected to the connector 5, and the other end is electrically connected to the terminal portion 6. As shown in FIG. 1A, the power cable 4 is a parallel wire connected in parallel with a two-core electric wire covered on the outside of the housing 3, and a two-core electric wire inside the housing 3. Is separated while being covered and placed in different positions. The coating of the parallel lines with the insulating coating member may be a double coating.

The connector 5 is configured so that it can be inserted and removed from a receptacle connector provided in a DC power supply device (not shown) provided outside the lighting device 100. The DC power supply device has, for example, a switching power supply circuit, and converts an AC voltage supplied from a power system into a DC voltage and outputs the AC voltage.

The terminal portion 6 is a terminal for electrically connecting the wiring of the mounting board 2 and the power cable 4. As shown in FIG. 1A, two terminal portions 6 are provided on the mounting board 2, and each of them is connected to each of a pair of covered electric wires constituting the power cable 4.

The connecting terminals 7 are provided at both ends or one ends of the mounting board 2 in the long axis direction, and connect a plurality of mounting boards 2 to each other. In the mounting board 2, for example, one connecting terminal 7 is a male terminal and the other connecting terminal 7 is a female terminal. The connecting terminal 7 can not only physically connect the mounting boards 2 to each other, but also electrically connect the wirings of the mounting boards 2. As a result, when a plurality of mounting boards 2 are housed inside the housing 3 in a state of being connected to each other, the power is supplied to the plurality of mounting boards 2 via the connector 5, the power cable 4, the terminal portion 6, and the wiring. It is supplied to the LED 1 mounted on the.

The electronic component 8 is a component mounted in a plurality of types on the mounting board 2, and controls the drive of the LED 1. The electronic component 8 is mounted on the mounting board 2 by, for example, soldering. Each of the electronic components 8 is electrically connected to a plurality of LEDs 1 via wiring. The plurality of types of electronic components 8 are electrically connected to each other to form a constant current circuit that supplies a constant current to the LED 1. Examples of the electronic component 8 include a resistor, a transistor, and the like. The constant current circuit makes the current flowing through the LED 1 constant when a predetermined DC voltage is applied.

As shown in FIG. 1A, the end cap 10 is provided at an end portion of the housing 3 in the long axis direction, and shields the inside of the housing 3 from the outside. The end cap 10 has a waterproof performance that allows the power cable 4 to pass through the inside of the housing 3 but does not allow water to enter. The end cap 10 is formed in an outer shape slightly larger than the outer shape of the end portion of the housing 3 so that it can be attached to the end portion of the housing 3. The details of the end cap 10 will be described below.

<Explanation of end cap 10>
Hereinafter, the end cap 10 will be described in detail. In the following description, in the state where the end cap 10 is attached to the housing 3 as shown in FIG. 1A, the surface of the housing 3 viewed from the outside along the long axis direction of the housing 3 is the end cap 10. The front surface of the housing 3 and the surface viewed from the inside of the housing 3 are the back surface of the end cap 10.

FIG. 2A is a perspective view of the end cap 10 as viewed from the front side. FIG. 2B is a front view of the end cap 10. FIG. 2C is a perspective view of the end cap 10 as viewed from the rear side. FIG. 2D is a rear view of the end cap 10. Further, FIG. 2E is a view of the end cap 10 as viewed from above.

As shown in FIGS. 2A-2E, the end cap 10 has a cap body 11 and a core 12. The cap body 11 is a member formed according to the outer shape of the housing 3. The core 12 is a member that holds the power cable 4, is fitted into the cap body 11 while holding the power cable 4, and is fixed to the cap body 11 by welding.

As shown in FIGS. 2A to 2E, the power cable 4 is in a state where two core electric wires are joined to each other (parallel wires) on the front side of the end cap 10, and two cores on the back side of the end cap 10. The electric wires are separated from each other.

<Explanation of cap body 11>
3A to 3E are views for explaining the cap main body 11. FIG. 3A is a perspective view of the cap body 11 as viewed from the front side. FIG. 3B is a front view of the cap body 11. FIG. 3C is a perspective view of the cap body 11 as viewed from the rear side. FIG. 3D is a rear view of the cap body 11. FIG. 3E is a cross-sectional view taken along the line AA in FIG. 3D.

As shown in FIGS. 3A to 3E, the cap body 11 has an outer edge member 111, a wall member 112, a hole 113, a first welding rib 114, a welding allowance 115, a second welding rib 116, and a guide member 117. The cap body 11 is made of a hard resin.

Examples of the material of the cap main body 11 include, for example, a polycarbonate resin and an acrylic resin, as in the case 3. By forming the cap body 11 with a hard resin, the thickness of the entire cap body 11 (distance from the front side end portion to the back side end portion) is made thinner from the viewpoint of strength as compared with the case where the cap body 11 is formed of a soft resin. can do. Further, it is desirable that the cap body 11 is made of a transparent resin.

The outer edge member 111 is a member that contacts the outside of the end portion of the housing 3 and fixes the end cap 10 to the housing 3 when the end cap 10 is attached to the housing 3 (see FIG. 1). The outer edge member 111 has a predetermined thickness. The predetermined thickness is 9 mm as an example. As a result, as shown in FIG. 1A, the outer edge member 111 of the cap body 11 is provided on the outermost side of the LED 1 in the long axis direction of the housing 3 with the end cap 10 attached to the housing 3. It will be arranged further outside than the LED1. Therefore, the end cap 10 does not cover the LED 1. When the end cap 10 covers the LED 1, the color of the light transmitted through the end cap 10 when the LED 1 emits light is slightly different from the color of the light transmitted through the light emitting portion 31 (see FIG. 1) of the housing 3. It may make the viewer feel uncomfortable. The present disclosure can avoid such a situation by the above-mentioned configuration.

The wall member 112 separates the outside and the inside of the housing 3 when the end cap 10 is attached to the housing 3 (see FIG. 1A). The wall member 112 is provided with a hole 113. A part of the core 12 (first protruding portion 122 shown in FIG. 4A or the like) is fitted in the hole 113.

The first welding rib 114 melts with the core 12 fitted in the cap body 11, fills the gap between the cap body 11 and the end of the core 12, and is hardened to form the cap body 11 and the core. It is a member for welding with 12. As shown in FIGS. 3D and 3E, the first welding rib 114 is provided on the edge of the hole 113. In the present embodiment, high frequency welding is used for welding the cap body 11 and the core 12. High-frequency welding is a method of melting and welding a material from the inside by dielectric heating with high frequency, and has a feature that the welded portion looks good because there is no physical vibration.

As shown in FIGS. 3C and 3D, a space for the first welding rib 114 melted when the cap body 11 is welded to the core 12 flows around the hole 113 on the back surface side of the wall member 112. A welding allowance 115 is provided.

The second welding rib 116 is melted in a state where the cap body 11 (end cap 10) is attached to the end of the housing 3 (see FIG. 1A), and the gap between the cap body 11 and the end of the housing 3 is formed. It is a member for filling and curing the cap body 11 and welding the housing 3. High frequency welding is used for welding the cap body 11 and the housing 3. The second welding rib 116 is provided at a position where the end portion of the housing 3 comes into contact with the wall member 112 in a state where the cap body 11 is attached to the end portion of the housing 3. Specifically, as shown in FIGS. 3C and 3D, the second welding rib 116 is arranged near the outer edge member 111 on the back surface side of the wall member 112. Since the cap body 11 is made of a transparent resin as described above, it can be visually recognized from the outside when the second welding rib 116 is melted. Therefore, it can be easily confirmed whether or not the cap main body 11, the core 12, and the housing 3 are suitably welded.

The guide member 117 is a member for guiding the outside of the end portion of the housing 3 to the inside of the cap body 11, that is, the vicinity of the wall member 112 when the end cap 10 is attached to the housing 3. As shown in FIG. 3C, the guide member 117 is formed on the inner wall surface of the outer edge member 111.

Further, when the end cap 10 is attached to the housing 3, the guide member 117 is in a state where the tip end portion of the guide member 117 is in contact with the side surface (outer wall surface of the end portion) of the end portion of the housing 3. Friction can assist in fixing the end cap 10 to the housing 3.

As shown in FIGS. 3C and 3D, since the guide member 117 is formed so as to project from the wall member 112 of the cap body 11 (outer edge member 111) toward the back surface side, the end cap 10 is attached to the housing 3. When attached, a small gap can be secured between the wall member 112 of the cap body 11 and the side surface of the end portion of the housing 3. For example, an adhesive may be poured into this gap so that the end cap 10 does not come off from the housing 3 from the time the end cap 10 is attached to the housing 3 until it is welded. Can be fixed.

As shown in FIG. 3D, the guide member 117 is provided only in the substantially lower half of the cap body 11. In other words, the guide member 117 is formed at a portion that does not come into contact with the light emitting portion 31 (see FIG. 1B) when the end cap 10 is attached to the housing 3. The reason is that when the LED 1 emits light with the end cap 10 attached to the housing 3, the light hits the guide member 117 and is scattered. If the guide member 117 is provided on the upper side of the cap main body 11, the light radiated from the LED 1 is scattered by the guide member 117, and the color of the scattered light, the direction of emission to the outside of the housing 3, etc. May be different from the light emitted from the light emitting unit 31. By forming the guide member 117 at a portion that does not come into contact with the light emitting portion 31, it is possible to prevent such a situation from occurring.

The guide member 117 may be slightly melted and used for welding at the time of high frequency welding between the end cap 10 and the housing 3.

<Explanation of core 12>
4A to 4E are diagrams for explaining the core 12. In FIGS. 4A to 4E, a part of the power cable 4 held by the core 12 is also shown for explanation. FIG. 4A is a perspective view of the core 12 as viewed from the front side. FIG. 4B is a front view of the core 12. FIG. 4C is a perspective view of the core 12 as viewed from the rear side. FIG. 4D is a rear view of the core 12. FIG. 4E is a partial perspective view of FIG. 4D as viewed from above.

As shown in FIG. 4A, the core 12 has a core body 121, a first protrusion 122, a first hole 123, a second protrusion 124, and a second hole 125.

The core body 121 has a surface (contact surface 126: shaded portion in FIG. 4B) that comes into close contact with the cap body 11 when the core 12 is fitted into the cap body 11. As shown in FIGS. 4A and 4B, the contact surface 126 is provided on the front side of the core 12, and the first protrusion 122 is provided at the center of the contact surface 126.

The first protruding portion 122 is a member that protrudes in the front direction from the contact surface 126 of the core main body 121. The cross-sectional area of the first protrusion 122 on the plane perpendicular to the axis extending from the front to the back is smaller than that of the core body 121 and is substantially the same as the opening area of the hole 113 (see FIG. 3) of the cap body 11. It is formed. As a result, when the core 12 is fitted into the cap body 11, the first protruding portion 122 is fitted into the hole 113 of the cap body 11, and the contact surface 126 of the core body 121 is the wall of the cap body 11. It adheres to the member 112. By performing the above-mentioned high-frequency welding in this state, the cap body 11 and the core 12 are suitably welded.

A first hole 123 is provided at substantially the center of the first protrusion 122. The first hole 123 is a hole for passing the power cable 4. The power cable 4 passed through the first hole 123 is a parallel wire in which two core electric wires are connected to each other by a covering member (vinyl or the like). Therefore, the first hole 123 has a shape that matches the outer shape of such parallel lines.

The second protruding portion 124 is a member that protrudes toward the back surface of the core body 121. A pair of second holes 125 are provided in the second protrusion 124 at positions separated from each other. The pair of second holes 125 are holes for passing a two-core electric wire that is separated while being covered.

That is, the power cable 4 held in the core 12 is in the state of parallel wires connected in parallel with the two-core electric wire covered in the first hole 123, and has two cores in the second hole 125. The electric wire is covered and separated. Such an arrangement of the power cable 4 is realized by a branch portion 127 provided inside the core 12 as shown in FIG. 4E. The branch portion 127 has a bifurcated shape, and the power cable 4 is in a state of parallel lines between the first hole 123 and the branch portion 127, and the branch portion 127 to the second hole 125. The two-core electric wire is separated between them.

With such a configuration, the power cable 4 does not interfere with the light emission of the LED 1 even when the LED 1 is mounted near the end of the mounting board 2. This effect will be specifically described with reference to FIG. FIG. 5 is an enlarged plan view of the vicinity of the end cap 10 of the lighting device 100.

As shown in FIG. 5, on the inner side of the housing 3, the power cables 4 are separated from each other by the core 12. As a result, when the LED 1 is mounted up to the vicinity of the end portion of the mounting board 2, the outermost LED 1 in the housing 3 can be arranged between the separated two-core power cables 4. Therefore, it is possible to avoid a situation in which the light emission of the LED 1 arranged on the outermost side of the housing 3 is obstructed by the power cable 4.

As shown in FIG. 5, in a state where the end cap 10 is attached to the housing 3, the cap body 11 and the core 12 are attached to the LED 1 on the outer side of the housing 3 than the outermost LED 1. It is arranged so as not to cover it. As a result, it is possible to avoid a situation in which the light emission of the LED 1 arranged on the outermost side is obstructed by the end cap 10. Thereby, the lighting device 100 can provide suitable light emission even in the vicinity of the end portion of the housing 3.

As described above, in the first hole 123, the pair of covered electric wires constituting the power cable 4 are connected to each other, and in the second hole 125, the connected electric wires are disconnected. The method for manufacturing 12 is, for example, as follows. That is, for example, a mold having a shape matching the outer shape of the core 12 is prepared, the power cable 4 is fixed in the mold so as to be separated from the middle, and a resin or the like is poured into the mold to cure the core. The child 12 may be formed.

<Action / effect>
As described above, the end cap 10 according to the embodiment of the present disclosure has a second welding rib 116 for melting when the end cap 10 and the end portion of the housing 3 are welded, and the LED 1 is used. Is attached to the end of the housing 3 in which the mounting board 2 is arranged by high frequency welding.

With such a configuration, the melted second welding rib 116 enters the gap generated between the end cap 10 and the housing 3 while the end cap 10 is attached to the housing 3, and the end is cured. The cap 10 and the housing 3 are firmly fixed to each other. Further, since the second welding rib 116 melted in the gap is inserted, the end cap 10 can sufficiently prevent water from entering the housing 3.

Further, since the welding between the end cap 10 and the housing 3 is performed by high frequency welding without physical vibration, the appearance of the welded portion can be improved.

Further, the end cap 10 of the present disclosure is outside the LED 1 so as not to cover the outermost LED 1 in the long axis direction of the housing 3 in a state of being attached to the end portion of the housing 3. Placed in.

With such a configuration, it is possible to avoid a problem that may occur when the end cap 10 covers the LED 1. The problem that may occur when the end cap 10 covers the LED 1 is that, for example, the color of the light transmitted through the end cap 10 when the LED 1 emits light is slightly different from the color of the light transmitted through the light emitting portion 31 of the housing 3. It makes the viewer feel uncomfortable.

Further, the end cap 10 includes an outer edge member 111 that comes into contact with the end portion of the housing 3 when the end cap 10 is attached to the housing 3, a wall member 112 that separates the outside and the inside of the housing 3, and an LED 1. The cap body 11 having a hole 113 provided in the wall member 112 for passing the power cable 4 that supplies power to the housing 3 from the outside to the inside, and the periphery of the power cable 4 are in close contact with the power cable 4. It has a core 12 which is covered with the power cable 4 to support the power cable 4 and is fitted into the hole 113 of the cap body 11 and welded to the cap body 11 by high frequency welding.

In this way, since the power cable 4 is passed from the outside to the inside of the housing 3 with the core 12 in close contact with the power cable 4, it is possible to prevent water from entering through the hole for passing the power cable 4. be able to. Further, since the core 12 and the cap body 11 are welded by high frequency welding, it is possible to prevent water from entering between the cap body 11 and the core 12, and to improve the appearance of the welded portion. be able to.

Further, when the power cable 4 is a parallel wire in which a two-core electric wire arranged in parallel is covered with an insulating member, the core 12 has a bifurcated branch portion 127 for separating the parallel wire into each of the two cores. Have inside. With such a configuration, it is possible to avoid a situation in which the light emission of the LED 1 arranged on the outermost side of the housing 3 is obstructed by the power cable 4.

Further, when the end cap 10 is attached to the housing 3, a guide member 117 that comes into contact with the side surface of the end portion of the housing 3 is formed on the inner wall surface of the cap main body 11. With such a configuration, the end cap 10 can be easily attached to the housing 3.

<Usage example>
An example of using the lighting device 100 according to the above-described embodiment will be described. 6A and 6B are diagrams for explaining the showcase 500 in which the lighting device 100 is used. FIG. 6A is a perspective view of the showcase 500, and FIG. 6B is a cross-sectional view of the showcase 500 in the front-rear direction. In FIGS. 6A and 6B, the side where the opening of the showcase 500 is provided is the front, and the opposite side is the back.

The showcase 500 is an open showcase installed in a store such as a supermarket or a convenience store. The showcase 500 has a heat insulating back wall 501 provided on the back surface, a heat insulating side wall 502 attached to the side surface of the back wall 501, a bottom wall 503, and a ceiling wall 504.

A partition plate 505 is attached to the inside of the back wall 501, and a duct is formed between the partition plate 505 and the like and the back wall 501. A bottom plate 506 is attached to the front of the lower end of the partition plate 505 between the bottom plate 503 and the bottom wall 503 of the back wall 501, and the partition plate 505 and the bottom plate 506 form a display chamber 507. The inside of the display room 507 is cooled by the cooling device 508 and the blower 509.

In such a showcase 500, the lighting device 100 is attached to the lower surface of the canopy 510 provided so as to project in front of the ceiling wall 504 and the lower surface of the shelf board 511 provided in the display room 507. .. With such an arrangement, the lighting device 100 can illuminate the inside of the display room 507 and the opening side of the showcase 500.

In the examples shown in FIGS. 6A and 6B, the case where the lighting device 100 is used for an open showcase has been described, but the present invention is not limited thereto. The lighting device 100 may be used for other types of showcases, exhibition equipment, and the like.

The present disclosure is useful as a lighting device used for showcases and the like.

100 Lighting device 1 LED
1a Chip 1b Package 1c Sealing part 2 Mounting board 21 1st surface 22 2nd surface 3 Housing 31 Light emitting part 32 Side wall 33 Guide part 34 Bottom wall 4 Power cable 5 Connector 6 Terminal part 7 Connecting terminal 8 Electronic component 10 End Cap 11 Cap body 111 Outer edge member 112 Wall member 113 Hole 114 1st welding rib 115 Welding allowance 116 2nd welding rib 117 Guide member 12 Core 121 Core body 122 1st protrusion 123 1st hole 124 2nd protrusion Part 125 2nd hole 126 Adhesion surface 127 Branch part 500 Showcase 501 Back wall 502 Side wall 503 Bottom wall 504 Ceiling wall 505 Partition plate 506 Bottom plate 507 Display room 508 Cooling device 509 Blower 510 Canopy 511 Shelf board

Claims (8)

A cap member that is attached to the end of a housing that houses a substrate on which a light emitting element is placed.
Power is supplied to the outer edge member that comes into contact with the end of the housing when the cap member is attached to the housing, the wall member that separates the outside and the inside of the housing, and the light emitting element. A cap body having a hole provided in the wall member for passing the power cable from the outside to the inside of the housing, and a cap body.
A cable support member that supports the power cable by covering the circumference of the power cable in close contact with the power cable, is fitted into a hole in the cap body, and is welded to the cap member by high-frequency welding.
Have a,
The cap body has a welding rib around the hole, which is melted at the time of high frequency welding to weld the cap body and the cable support member.
Cap member. The cap body has a welding allowance around the hole.
The cap member according to claim 1. A cap member that is attached to the end of a housing that houses a substrate on which a light emitting element is placed.
Power is supplied to the outer edge member that comes into contact with the end of the housing when the cap member is attached to the housing, the wall member that separates the outside and the inside of the housing, and the light emitting element. A cap body having a hole provided in the wall member for passing the power cable from the outside to the inside of the housing, and a cap body.
A cable support member that supports the power cable by covering the circumference of the power cable in close contact with the power cable, is fitted into a hole in the cap body, and is welded to the cap member by high-frequency welding.
Have,
When the power cable is a parallel wire in which a two-core electric wire arranged in parallel is covered with an insulating member, the cable support member has a bifurcated bifurcated portion for separating the parallel wire into each of the two cores. Have inside
Cap member. The cable support member is
A first protruding portion that fits into the hole portion of the cap body,
A main body member having a contact surface in close contact with the wall member of the cap main body in a state where the first protruding portion is fitted with the hole portion.
The cap member according to any one of claims 1 to 3, wherein the cap member comprises. It is a method of manufacturing a cap member attached to the end of a housing of a lighting device that houses a substrate on which a light emitting element is arranged.
Supply and outer member on which the cap member is in contact with an end portion of the housing when attached to the housing, and the wall member to isolate the outside and the inner portion of the housing, the power to the light emitting element a hole portion provided the power cable to the wall member to pass to the outside or al the end of the casing that, the cap body comprising a covering around the power cable in close contact to the power cable Fit the cable support member that supports the power cable,
Welding ribs provided around the hole are melted by high frequency welding to weld the cap member and the cable support member.
Manufacturing method of cap member. It is a method of manufacturing a cap member attached to the end of a housing of a lighting device that houses a substrate on which a light emitting element is arranged.
Power is supplied to the outer edge member that comes into contact with the end of the housing when the cap member is attached to the housing, the wall member that separates the outside and the inside of the housing, and the light emitting element. The power cable is covered with a cap body provided with a hole provided in the wall member for passing the power cable from the outside to the inside of the housing so as to cover the periphery of the power cable in close contact with the power cable. The cable support member that supports the cable is fitted, and the cap member and the cable support member are welded by high-frequency welding.
In the cable support member, when the power cable is a parallel wire in which a two-core electric wire arranged in parallel is covered with an insulating member, the parallel wire has a bifurcated shape provided inside the cable support member. Separated into each of the two cores by a branch.
Manufacturing method of cap member. Light emitting element and
The substrate on which the light emitting element is arranged and
A housing for storing the board and
The cap member according to any one of claims 1 to 4, and the cap member.
Has a lighting device. The lighting device according to claim 7, wherein the lighting device is provided.
Showcase.

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