JP2019129098A - LED lighting device - Google Patents

Abstract

To provide an LED lighting device that can increase a light volume in a longitudinal end part.SOLUTION: An LED lighting device A1 includes: a light source part 2 including multiple LEDs 22 arranged in an x direction; a cable 5 connected to the light source part 2; an elongated-shape cover 4 for covering the light source part 2, transmitting light from the light source part 2 therethrough and having the x direction as the longitudinal direction thereof; and a cap 3A provided to an end part in the x direction of the cover 4 and having a cable hole for exposing the cable 5 in a direction crossing with the x direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an LED lighting device.

  LED lighting devices using LEDs are widely used as alternative lighting devices such as fluorescent lamps. Patent Document 1 discloses an example of a conventional LED lighting device. The LED illumination device disclosed in the document includes a light source unit having a plurality of LEDs arranged on a substrate, a cover that covers the light source unit, and a pair of caps provided at both ends of the cover. The cover is made of a material that transmits light from the light source unit, and has a cylindrical shape. The pair of caps are attachable to an external power feeding unit. With such a configuration, the LED lighting device is used as an alternative lighting device for a straight tube fluorescent lamp. As an application example of such an LED lighting apparatus, the showcase which displays goods, such as a foodstuff, in a store front, for example, can be mentioned, refrigerated.

JP-A-2015-173007

  In order to attach an LED lighting device having a pair of bases similar to a straight tube fluorescent lamp, it is necessary to provide a power supply unit located on the outside in the longitudinal direction of the pair of bases on a showcase or the like. The pair of caps and the feeding part are non-emitting parts. For this reason, there is concern that the amount of light may be insufficient in the region of the longitudinal end.

  The present invention has been conceived under the circumstances described above, and an object of the present invention is to provide an LED lighting device capable of increasing the amount of light at the end in the longitudinal direction.

  The LED illumination device provided by the present invention includes a light source unit including a plurality of LEDs arranged in a first direction, a cable connected to the light source unit, and the light from the light source unit covering the plurality of LEDs. An elongate cover having the first direction as a longitudinal direction, and a cap provided at an end portion of the cover in the first direction and exposing the cable in a second direction intersecting the first direction. .

  In a preferred embodiment of the present invention, the cap transmits light from the light source unit.

  In a preferred embodiment of the present invention, the cap has a cable groove provided so as to surround the first direction and capable of accommodating a part of the cable.

  In a preferred embodiment of the present invention, a magnetic holder is provided that is attached to the cover and fixed to an external magnetic body.

  In preferable embodiment of this invention, the support member which supports the said light source part, and the internal holder for fixing the said light source part to the said support member are provided.

  According to the present invention, the amount of light at the longitudinal end can be increased.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a perspective view which shows the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a principal part perspective view which shows the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a principal part perspective view which shows the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a principal part disassembled perspective view showing an LED lighting device concerning a 1st embodiment of the present invention. It is a principal part disassembled perspective view showing an LED lighting device concerning a 1st embodiment of the present invention. The LED lighting apparatus which concerns on 1st Embodiment of this invention is shown, (a) is a front view, (b) is a top view. The LED lighting apparatus which concerns on 1st Embodiment of this invention is shown, (a) is a left view, (b) is a right view. It is a principal part expanded sectional view which follows the IX-IX line of FIG. It is a principal part expanded sectional view which follows the IX-IX line of FIG. It is a principal part expanded sectional view which follows the IX-IX line of FIG. It is sectional drawing in alignment with the XII-XII line of FIG. It is sectional drawing in alignment with the XIII-XIII line of FIG. It is sectional drawing in alignment with the XIV-XIV line of FIG. It is a perspective view which shows the cap of the LED lighting apparatus which concerns on 1st Embodiment of this invention. The cap of the LED lighting apparatus which concerns on 1st Embodiment of this invention is shown, (a) is a top view, (b) is a front view, (c) is a rear view. The cap of the LED lighting apparatus which concerns on 1st Embodiment of this invention is shown, (a) is a left view, (b) is a right view. (A) is a cross-sectional view taken along the line XVIIIa-XVIIIa in FIG. 16 (a), and (b) is a cross-sectional view taken along the line XVIIIb-XVIIIb in FIG. 16 (a). It is a principal part expansion perspective view which shows the LED lighting apparatus which concerns on 1st Embodiment of this invention. The internal holder of the LED lighting apparatus which concerns on 1st Embodiment of this invention is shown, (a) is a top view, (b) is a front view, (c) is a right view. It is a perspective view which shows the magnetic force holder of the LED lighting apparatus which concerns on 1st Embodiment of this invention. The magnetic force holder of the LED illuminating device which concerns on 1st Embodiment of this invention is shown, (a) is a top view, (b) is a front view, (c) is a right view. (A) is a cross-sectional view taken along the line XXIIIa-XXIIIa of FIG. 22 (a), and (b) is a cross-sectional view taken along the line XXIIIb-XXIIIb of FIG. 22 (a). It is a schematic sectional drawing which shows an example of the showcase which used the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a principal part expansion perspective view which shows an example of the showcase using the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a principal part expanded sectional view which follows the XXVI-XXVI line of FIG. It is a principal part expansion right side view showing an example of the showcase using LED lighting equipment concerning a 1st embodiment of the present invention. It is a principal part expanded left view which shows the modification of the showcase using the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a principal part expansion perspective view showing other modifications of the showcase using the LED lighting device concerning a 1st embodiment of the present invention. It is the principal part enlarged front view which shows the other modification of the showcase which used the LED lighting apparatus which concerns on 1st Embodiment of this invention. It is a perspective view which shows the LED lighting apparatus which concerns on 1st Embodiment of this invention, and some modification.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

First Embodiment
1 to 14 show an LED lighting device according to a first embodiment of the present invention. The LED lighting device A1 of the present embodiment includes a support member 1, a light source 2, a cap 3A, a cap 3B, a cover 4, a cable 5, an internal holder 6, and a plurality of magnetic force holders 7. The LED lighting device A1 is an elongated lighting device whose longitudinal direction is in the x direction. In the present embodiment, the LED lighting device A1 is a lighting device having a shape similar to a straight tube fluorescent lamp. However, the LED lighting device according to the present invention is not limited to a straight tube fluorescent light alternative lighting device or a device similar to a straight tube fluorescent light.

  FIG. 1 is a perspective view showing the LED lighting device A1. FIG. 2 is a perspective view showing the LED lighting device A1. FIG. 3 is a perspective view of an essential part showing the LED lighting device A1. FIG. 4 is a perspective view of an essential part showing the LED lighting device A1. FIG. 5 is a main part exploded perspective view showing the LED lighting device A1. FIG. 6 is a main part exploded perspective view showing the LED lighting device A1. 7A and 7B show the LED lighting device A1, in which FIG. 7A is a front view and FIG. 7B is a plan view. FIG. 8 shows the LED lighting device A1, where (a) is a left side view and (b) is a right side view. FIG. 9 is an enlarged sectional view of an essential part along line IX-IX in FIG. FIG. 10 is an enlarged sectional view of an essential part taken along line IX-IX in FIG. FIG. 11 is an enlarged sectional view of an essential part along the line IX-IX in FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. FIG. 14 is a cross-sectional view taken along the line XIV-XIV of FIG. In these figures, the x direction may correspond to the first direction and the longitudinal direction, and the y direction and the z direction may correspond to the second direction. In the figure, the y direction and the z direction are both perpendicular to the x direction and perpendicular to each other. In FIG. 3 and FIG. 4, the cover 4 is omitted for the sake of understanding.

[Supporting member 1]
The support member 1 supports the light source unit 2 and, in the present embodiment, is accommodated in the cover 4 as shown in FIGS. 5 and 6. As shown in FIG. 9 to FIG. 11, FIG. 13 and FIG. 14, the support member 1 of the present embodiment includes a main plate 11, a pair of side plates 12, a pair of locking portions 13, a pair of back plates 14, a pair And an annular portion 16. The material of the support member 1 is not particularly limited, and in the illustrated example, it is made of a metal such as aluminum. The support member 1 having such a configuration is suitable for dissipating the heat from the light source unit 2. The support member 1 of the present embodiment has a constant cross-sectional shape along the yz plane.

  The main plate portion 11 is a long rectangular portion in which the x direction is the longitudinal direction, the y direction is the width direction, and the z direction is the thickness direction. The pair of side plate portions 12 are portions that extend downward from both ends in the y direction of the main plate portion 11 in the z direction view. The pair of locking portions 13 is a portion extending inward in the y direction from the lower end in the z-direction view of the pair of side plate portions 12. The pair of back plate portions 14 extend from the upper surface in the z direction view of the main plate portion 11 to the upper side in the z direction view, and are separated from each other in the y direction. In the illustrated example, the pair of back plate portions 14 is positioned inward in the y direction than both ends of the main plate portion 11 in the y direction.

  The pair of bent portions 15 are connected to the upper ends of the pair of back plate portions 14 in the z direction diagram, and are inclined so as to be located inward in the y direction as they go upward in the z direction diagram. The annular portion 16 is connected to the upper surface of the main plate portion 11 in the z direction view, and has an annular shape with a part cut away when viewed in the x direction. The annular portion 16 is provided substantially at the center of the main plate portion 11 in the y direction.

[Light source 2]
The light source unit 2 is a light source of the LED lighting device A1, and in the present embodiment, as shown in FIGS. 4, 6, 9-11, 13 and 14, it has a substrate 21 and a plurality of LEDs 22. .

  The substrate 21 is mounted with a plurality of LEDs 22 and has a long rectangular shape in which the x direction is the longitudinal direction, the y direction is the width direction, and the z direction is the thickness direction. The substrate 21 is made of, for example, a base made of an insulating material such as glass epoxy resin, and a wiring pattern (not shown) formed on the base. The substrate 21 may be bonded to the main plate portion 11 of the support member 1 with an adhesive, an adhesive tape, or the like, for example.

  The plurality of LEDs 22 are light emitters that emit light when energized, and are arranged in the x direction. In the illustrated example, the plurality of LEDs 22 are arranged in one row in the x direction, but may be arranged in a plurality of rows in the x direction.

  The LED 22 includes an LED chip (not shown). The LED 22 may be a single LED chip or may include components other than the LED chip. Examples of the configuration of the LED 22 include, for example, a configuration including a module substrate or a lead on which an LED chip is mounted, and a translucent resin covering the LED chip. The emission color of the LED chip is not particularly limited, and emits, for example, blue light. The light transmitting resin is formed of, for example, a transparent resin mixed with a fluorescent material. The fluorescent material emits yellow light by being excited by blue light from the LED chip. With such a configuration, the LED 22 can be configured to emit white light.

[Cover 4]
The cover 4 covers the plurality of LEDs 22 of the light source unit 2 and is made of a material that transmits light from the light source unit 2. In the present embodiment, the cover 4 accommodates the support member 1 and the light source unit 2 and has a cylindrical shape whose longitudinal direction is the x direction. The material of the cover 4 is not particularly limited, and is made of a transparent or translucent resin that transmits light from the light source unit 2. In the present embodiment, the cover 4 is made of a translucent milky white resin. In addition, the cover 4 is not limited to the structure which accommodates the whole light source part 2, For example, the semi-cylindrical thing which covers several LED22 of the light source part 2 from z direction lower direction may be sufficient. The cover 4 of the present embodiment has a pair of notches 41. The pair of notches 41 are provided at both ends of the cover 4 in the x direction, and each is recessed in the x direction. The pair of cutout portions 41 have the same y-direction position and z-direction position (circumferential position).

[Cap 3A]
The cap 3A is provided at one end of the cover 4 in the x direction (longitudinal direction), as shown in FIGS. In the present embodiment, the cap 3A closes the opening at one end in the x direction of the cylindrical cover 4. The material of the cap 3A is not particularly limited, and various materials such as resin and metal can be used. In the present embodiment, the cap 3A is made of a material that transmits the light from the light source unit 2, and is preferably made of a milky white translucent resin.

  As shown in FIGS. 15 to 18, the cap 3A of the present embodiment includes an end plate portion 31A, a cylindrical portion 32A, a cable hole 33A, a cable groove 34A, a bolt hole 35A, and a ring groove 36A.

  The end plate portion 31A is located on the outermost side in the x direction and has an outer surface that is perpendicular to the x direction. In the present embodiment, the end plate portion 31A is circular in the x direction. The cylindrical portion 32A extends inward in the x direction from the end plate portion 31A, and is a substantially cylindrical portion whose axial direction is the x direction. In the present embodiment, as shown in FIG. 9, at least a part of the cylindrical portion 32A is inserted into the cover 4. A protrusion 321A is formed on the cylindrical portion 32A of the present embodiment. The protrusion 321A protrudes inward in the x direction more than the peripheral portion. As shown in FIGS. 7A and 9, the protrusion 321 </ b> A is fitted into one notch 41 of the cover 4, thereby defining the circumferential position of the cap 3 </ b> A with respect to the cover 4.

  The cable hole 33A is for exposing the cable 5 in a direction crossing the x direction (longitudinal direction). The direction in which the cable 5 is exposed is not particularly limited as long as it crosses the x direction (longitudinal direction), and a direction perpendicular to the x direction or a direction inclined with respect to the x direction is appropriately selected. . In the present embodiment, the cable hole 33A is configured to expose the cable 5 in a direction perpendicular to the x direction. In the illustrated example, the cable 5 is exposed in the z direction. The cable hole 33A is a through hole which penetrates the cylindrical portion 32A in the z direction.

  The cable groove 34A can accommodate a part of the cable 5 exposed from the cable hole 33A, and is provided to surround the x direction. In the illustrated example, the cable groove 34A has a shape in which a part of the cylindrical portion 32A is recessed, and is connected to the cable hole 33A. In the present embodiment, the cable groove 34A is provided at an orientation of approximately 180 ° centered on the x direction.

  The bolt hole 35A penetrates the end plate portion 31A in the x direction, and is used for inserting the screw 391A shown in FIGS. In the present embodiment, the screw 391A is inserted into the bolt hole 35A of the cap 3A and screwed into the annular portion 16 of the support member 1. Thus, the cap 3A is fixed to the support member 1. The screw 391A is located above the substrate 21 of the light source unit 2 in the z direction in the drawing. In the illustrated example, the bolt hole 35A is closed by the sealing member 392A. The sealing member 392A is a member made of rubber, for example, and is intended to prevent moisture and the like from entering the bolt hole 35A from the outside.

  The ring groove 36A is provided so as to be recessed from the outer peripheral surface of the cylindrical portion 32A, and is provided over the entire circumference of the cylindrical portion 32A. The ring groove 36A is for accommodating the O-ring 393A shown in FIG. 5, FIG. 6 and FIG. The O-ring 393A is in close contact with the inner peripheral surface of the cover 4 in a state of being accommodated in the ring groove 36A of the cap 3A to prevent moisture and the like from infiltrating from the gap between the cap 3A and the cover 4 belongs to.

[Cap 3B]
The cap 3A is provided at the other end of the cover 4 in the x direction (longitudinal direction) opposite to the cap 3A, as shown in FIGS. In the present embodiment, the cap 3B closes the opening at the other end in the x direction of the cylindrical cover 4. The material of the cap 3B is not particularly limited, and various materials such as resin and metal can be used. In the present embodiment, the cap 3B is made of a material that transmits light from the light source unit 2, and is preferably made of a milky white translucent resin. The cover 4 may be provided with a pair of caps 3A at both ends in the x direction so that the cable 5 can be exposed from each.

  The cap 3B of this embodiment has a similar configuration to the cap 3A except that the cable hole 33A and the cable groove 34A are not formed. As shown in FIG. 11, the cap 3B of the present embodiment includes an end plate portion 31B, a cylindrical portion 32B, a bolt hole 35B, and a ring groove 36B.

  The end plate portion 31B is located on the outermost side in the x direction and has an outer surface that is perpendicular to the x direction. In the present embodiment, the end plate portion 31B is circular in the x direction. The cylindrical portion 32B extends inward in the x direction from the end plate portion 31B, and is a substantially cylindrical portion having the x direction as an axial direction. In the present embodiment, as shown in FIG. 11, at least a portion of the cylindrical portion 32 </ b> B is inserted into the cover 4. A protrusion 321B is formed on the cylindrical portion 32B of the present embodiment. The protrusion 321B protrudes inward in the x direction more than the peripheral portion. As shown in FIGS. 7A and 11, the protrusion 321 </ b> B is fitted into the other notch 41 of the cover 4, thereby defining the circumferential position of the cap 3 </ b> B with respect to the cover 4.

  The bolt hole 35B penetrates the end plate portion 31B in the x direction, and is for inserting the screw 391B shown in FIG. In the present embodiment, the screw 391B is inserted into the bolt hole 35B of the cap 3B and screwed into the annular portion 16 of the support member 1. Thereby, the cap 3B is fixed to the support member 1. That is, by fixing the cap 3A and the cap 3B to the support member 1 by the screw 391A and the screw 391B, the cover 4 is supported by being sandwiched between the cap 3A and the cap 3B from both ends in the x direction. The screw 391 B is located above the substrate 21 of the light source unit 2 in the z direction in the drawing. Further, in the illustrated example, the bolt hole 35B is closed by the sealing member 392B. The sealing member 392B is a member made of rubber, for example, and is intended to prevent moisture and the like from entering the bolt hole 35B from the outside.

  The ring groove 36B is provided so as to be recessed from the outer peripheral surface of the cylindrical portion 32B, and is provided over the entire circumference of the cylindrical portion 32B. The ring groove 36B is for accommodating the O-ring 393B shown in FIG. The O-ring 393B is in close contact with the inner peripheral surface of the cover 4 in a state of being accommodated in the ring groove 36B of the cap 3B, thereby preventing moisture or the like from infiltrating from the gap between the cap 3B and the cover 4 belongs to.

  In addition, one or both of the screw 391A (screw 391B) and the sealing member 392A (sealing member 392B) may be made of a light-transmitting material. By doing this, the light from the light source unit 2 from the cap 3A and the cap 3B including the screw 391A (screw 391B) and the sealing member 392A (the sealing member 392B) is more effectively transmitted to the outside of the LED lighting device A1. Since it is possible to emit light, it is possible to increase the amount of light at the longitudinal end of the LED lighting device A1.

  The O-ring 393A and the O-ring 393B may be made of a light-transmitting material. By doing this, the light from the light source unit 2 from the cap 3A and the cap 3B including the O-ring 393A and the O-ring 393B accommodated in the ring groove 36A and the ring groove 36B can be more effectively outside the LED lighting device A1. Since it is possible to emit light to the light source, it is possible to increase the amount of light at the longitudinal end of the LED lighting device A1.

[Cable 5]
The cable 5 is for supplying power for lighting the light source unit 2 and is used, for example, for connection with a showcase or the like described later. In the present embodiment, as shown in FIG. 9, the cable 5 is connected to the light source unit 2 by being conductively joined to the wiring pattern (not shown) of the substrate 21 of the light source unit 2 by solder or the like. Yes. In addition, the connection form of the cable 5 and the light source unit 2 is not particularly limited, and may be connected to a connector provided in the light source unit 2, or another cable and the cover 4 provided in the light source unit 2. May be connected via a connector or the like.

  As shown in FIGS. 8A, 9 and 12, the cable 5 is inserted into the cable hole 33A of the cap 3A and exposed from the cable hole 33A in the z direction intersecting the x direction. The portion of the cable 5 exposed from the cable hole 33A can be accommodated in the cable groove 34A by bending along the cable groove 34A. In the illustrated example, the cable grooves 34A are formed on both sides in the y direction with respect to the cable hole 33A. Therefore, the cable 5 can be accommodated along the cable groove 34A regardless of whether it is bent to the right in the drawing in FIG. 12 or bent to the left in the drawing.

[Internal holder 6]
As shown in FIG. 19, the internal holder 6 is used to more reliably attach the substrate 21 of the light source unit 2 to the support member 1. The internal holder 6 is made of, for example, a resin. As shown in FIGS. 19 and 20, in the illustrated example, the inner holder 6 has a main portion 61, a pair of side portions 62, a convex portion 63, and a pair of locking portions 64. In the illustrated example, the LED lighting device A1 includes one internal holder 6, but may have a plurality of internal holders 6. Further, depending on the manufacturing accuracy of the support member 1 and the light source unit 2, the LED illumination device A <b> 1 may be configured not to include the internal holder 6.

  The main portion 61 is a main portion of the inner holder 6, and in the illustrated example, a rectangular portion in the z direction. An opening 611 is formed in the main portion 61. The opening 611 penetrates the main portion 61 in the z direction, and is for exposing the substrate 21 of the light source unit 2.

  The pair of side portions 62 extends downward from both ends of the main portion 61 in the y direction. The y-direction outer surfaces of the pair of side portions 62 are curved, and abut on the inner peripheral surface of the cover 4 as shown in FIG.

  The convex portion 63 protrudes upward in the z direction from the main portion 61. In the illustrated example, the opening 611 penetrates the convex portion 63 in addition to the main portion 61. The convex portion 63 is for pressing the substrate 21 more strongly against the main plate portion 11 of the support member 1 by contacting the substrate 21 of the light source unit 2.

  The pair of locking portions 64 extend upward from the main portion 61 in the z-direction in the drawing, and are separated from each other in the y-direction. In the illustrated example, the pair of locking portions 64 has a shape in which the upper end in the z-direction view is bent inward in the y direction. The pair of locking portions 64 are for fixing the inner holder 6 to the support member 1 by locking to the upper surface of the main plate portion 11 of the support member 1 in the z direction view.

[Magnetic holder 7]
The magnetic holder 7 is for fixing the LED illumination device A1 to an attachment target made of an external magnetic body. As shown in FIGS. 13 and 21 to 23, the magnetic force holder 7 of this embodiment includes a holder 71 and a magnet 72. In the illustrated example, the LED lighting device A1 includes the two magnetic force holders 7. However, the number of the magnetic force holders 7 is not limited to this, and may be one or three or more. Moreover, when another means for attaching the LED lighting device A1 is prepared, the LED lighting device A1 may be configured not to include the magnetic force holder 7.

  The holder 71 is a member that holds the magnet 72 and is attached to the cover 4 of the LED lighting device A1. The holder 71 is made of, for example, a resin and preferably made of a transparent resin. In the illustrated example, the holder 71 has a main body 711, a pair of grooves 712 and a pair of arms 713. The main body 711 is a part that holds the magnet 72. The pair of grooves 712 are provided in the main body portion 711 and are groove portions that are recessed from the inside in the y direction toward the outside in the y direction. The pair of arm portions 713 are connected to both ends of the main body portion 711 in the y direction, and have a curved shape when viewed in the z direction. The inner surfaces of the pair of arm portions 713 have, for example, a shape that draws a circle that is similar to or slightly smaller than the outer peripheral surface of the cover 4. Thus, the magnetic force holder 7 is attached to the cover 4 (the LED lighting device A1) such that the cover 4 is sandwiched by the pair of arm portions 713.

  Magnet 72 is made of, for example, a ferrite magnet. In the illustrated example, the magnet 72 has a pair of ribs 721. The pair of ribs 721 project on both sides in the y direction. The magnets 72 are fixed to the holder 71 by fitting the pair of ribs 721 into the pair of grooves 712 of the holder 71.

[Showcase B1]
Next, a showcase B1 that is an application example of the LED illumination device A1 will be described below with reference to FIGS. In addition, the use of LED lighting apparatus A1 is not limited to showcase B1, It is used for various uses.

  The showcase B1 is for displaying goods such as food at a shop front or the like. The showcase B1 generally has a function of keeping a product warm, and has applications such as refrigeration and freezing. In the illustrated example, the showcase B1 includes a casing 80, a top portion 81, a plurality of shelves 82, a power source portion 83, a cable 84, and a connector 85, and a plurality of LED lighting devices A1 are attached thereto. ing.

  The housing 80 is a main body portion of the showcase B1. The housing 80 has a structural member for supporting, for example, the top 81 and the plurality of shelves 82. Moreover, the housing | casing 80 may contain the refrigeration apparatus (not shown) for refrigerated goods.

  The top portion 81 is provided at the top of the showcase B 1 in the z direction, and covers the plurality of shelf portions 82 from above in the z direction. The LED lighting device A1 is attached to the lower surface of the top portion 81 in the z direction at the tip of the y direction.

  The plurality of shelf portions 82 are portions for displaying goods, and are arranged in the z direction. As shown in FIG. 25 and FIG. 26, the LED lighting devices A1 are attached to the lower surface of each shelf 82 in the z direction. In the illustrated example, at least a part of the shelf 82 is made of a magnetic material. The LED lighting device A1 is attached to the shelf 82 by attracting the magnetic body portion and the magnetic force holder 7 by the magnetic force.

  The power supply unit 83 supplies power for lighting the plurality of LED lighting devices A1. For example, the power supply unit 83 converts commercial AC power into DC power suitable for lighting the LED lighting device A1 (light source unit 2). In the illustrated example, the power supply unit 83 is provided above the top unit 81, but this is an example, and the configuration and installation position of the power supply unit 83 are not particularly limited.

  The cable 84 connects the power supply unit 83 and the plurality of LED lighting devices A1. In the illustrated example, the cable 84 passes from the power supply unit 83 through the top 81 and is laid along the housing 80 in the downward direction in the z direction. In addition, the cables 84 are laid along the shelf portions 82 to the LED lighting device A1.

  In the illustrated example, the cable hole 33A of the LED lighting device A1 is located in the y direction (leftward in the drawing in FIG. 27) in the y direction with respect to the y direction center of the LED lighting device A1. On the other hand, the cables 84 laid on each shelf 82 extend from the rear in the y direction (rightward in the drawing in FIG. 27) with respect to the LED lighting device A1. In this case, the portion of the cable 5 exposed from the cable hole 33A is bent along the cable groove 34A to the right in the figure. In the illustrated example, a connector 51 is provided at the tip of the cable 5. The cable 84 and the LED lighting device A1 are connected by coupling the connector 51 and the connector 85 provided at the end of the cable 84. It is preferable that the coupling position of the connector 51 and the connector 85 is behind the LED lighting device A1 in the y direction.

  Next, the operation of the LED lighting device A1 will be described.

  According to the present embodiment, the cap 3A is provided with the cable hole 33A that exposes the cable 5 in a direction that intersects the longitudinal x direction. As a result, the cable 5 does not project from the cap 3A in the x direction but extends in a direction different from the x direction. Thereby, it is not necessary to provide the member equivalent to the nozzle | cap | die in a straight tube | pipe type fluorescent lamp in the x direction edge part of LED lighting apparatus A1. Moreover, in the apparatus which attaches LED lighting apparatus A1, it is not necessary to provide the electric power feeding part for attaching to the x direction edge part of LED lighting apparatus A1. Therefore, it is possible to reduce the non-light emitting portion at the end portion in the x direction of the LED lighting device A1, and the amount of light at the end portion in the x direction of the LED lighting device A1 can be increased.

  In the present embodiment, the cap 3A is made of a material that transmits the light from the light source unit 2. Thereby, in the LED lighting device A1, it is possible to make the light emitting region up to the end in the x direction of the cap 3A. This is preferable for increasing the amount of light at the x-direction end of the LED lighting device A1. Further, by forming the cap 3B provided on the side opposite to the cap 3A from a material that transmits light from the light source unit 2, the amount of light at both ends in the x direction of the LED illumination device A1 can be increased. With the configuration having no base, the substrate 21 of the light source unit 2 can be provided to a position closer to the end in the x direction. This is preferable for increasing the amount of light at the end of the LED lighting device A1. Note that, unlike the illustrated example, the x-direction end of the substrate 21 may reach the inside of the cap 3A. When the cap 3A and the cap 3B are made of a translucent material that diffuses and transmits light from the light source unit 2, unevenness of light due to the internal structure of the LED lighting device A1 can be suppressed. Note that, unlike the illustrated example, the x-direction end of the substrate 21 may reach the inside of the caps 3A and 3B.

  Since the cable groove 34A is formed in the cap 3A, in the example of use as shown in FIG. 27, the cable 5 is bent from the cable hole 33A beyond the center in the y direction of the LED lighting device A1 to the opposite side in the y direction. In some cases, it is possible to properly route the cable 5 to the cap 3A. This is advantageous for improving the appearance and preventing the cable 5 from being entangled.

  By having the external holder 7, it is possible to easily attach the LED lighting device A1 to an external magnetic body. Further, the LED lighting device A1 can be easily detached from the showcase B1 or the like, and replacement work for another LED lighting device A1 or work for changing the mounting posture of the LED lighting device A1 is performed more easily. be able to.

  By providing the internal holder 6, the support member 1 and the substrate 21 (light source unit 2) can be more reliably fixed even if the support member 1 or the substrate 21 is inevitably bent during manufacture or use. it can.

  28 to 31 show a modification of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

[Showcase B1 First Modification]
FIG. 28 shows a first modification of the showcase B1. In showcase B11 of this modification, cable hole 33A of LED lighting device A1 is located in the y direction behind the y-direction center of LED lighting device A1 in the y-direction (left in FIG. 28). . The cables 84 laid on the respective shelf portions 82 extend from the y direction rear side (left side in the drawing in FIG. 28) with respect to the LED lighting device A1. Therefore, in the cable 5 of the LED lighting device A1, the portion exposed from the cable hole 33A is bent to the opposite side to the above-described showcase B1. And the connector 51 and the connector 85 are couple | bonded in the y direction back of LED lighting apparatus A1.

  As can be understood from this modification, the LED lighting device A1 can be used for a wider variety of devices by setting the bend of the cable 5 or the like according to the power supply configuration of the device to be attached. Note that the LED lighting device A1 is not limited to the case where power is supplied from the rear in the y direction, and may be used for a device having a configuration in which power is supplied from the front in the y direction to the LED lighting device A1. Moreover, such an advantage of the LED lighting device A1 is not limited to the case where the LED lighting device A1 is used for the showcase B1 or the showcase B11, but is exhibited when the LED lighting device A1 is used for various devices. It is a good effect.

[Showcase B1 Second Modified Example]
29 and 30 show a second modified example of the showcase B1. In the showcase B12 of the present modification, two LED lighting devices A1 are attached to one shelf portion 82. The two LED lighting devices A1 are arranged in the x direction so that the longitudinal directions thereof coincide with each other. In addition, one end of the LED lighting device A1 in the x direction and the other end of the other LED lighting device A1 are arranged close to each other. In the illustrated example, the cap 3A of one LED lighting device A1 and the cap 3B of the other LED lighting device A1 are close to each other. The proximity of the cap 3A and the cap 3B may be in contact with each other, or may be spaced apart to such an extent that they are not recognized as clear spaces.

  Since the cable 5 is exposed from the cap 3A in the direction crossing the x direction, the cap 3B can be disposed close to the cap 3A. When the cap 3A and the cap 3B are made of a material that transmits light from the light source unit 2, the light from the light source unit 2 is emitted from the cap 3A and the cap 3B. Thereby, it is possible to visually recognize two LED lighting devices A1 in a lighting state as one longer lighting device is lit. Moreover, even if the x-direction dimensions of the shelves 82 are different, such an integrated appearance can be realized in each case by using an arbitrary number of single-size LED lighting devices A1. . In addition, you may attach three or more LED lighting apparatuses A1 similarly to this modification. Moreover, you may attach LED lighting apparatus A1 by making cap 3A of two LED lighting apparatuses A1 adjoin.

[LED lighting device A1 modification]
FIG. 31 shows the LED lighting device A1 and a plurality of modified examples of the LED lighting device A1. The LED lighting devices A11, A12, A13 shown in the drawing are different from the LED lighting device A1 in the x-direction length. Except for the configuration related to the length in the x direction of the LED lighting devices A11, A12, and A13, it is the same as the LED lighting device A1.

  The LED lighting device A11 has a configuration in which the length in the x direction is shorter than that of the LED lighting device A1. The LED illumination devices A12 and A13 have a configuration in which the length in the x direction is longer than that of the LED illumination device A1, and the LED illumination device A13 is longer than the LED illumination device A12. As such a plurality of examples, the LED illumination device A1 may be a size that can be used as an alternative illumination device for a 20-type straight tube fluorescent lamp, and the LED illumination device A11 can be used as an alternative illumination device for a 10-type straight tube fluorescent lamp. An example of a configuration in which the LED illumination device A12 is a size that can be used as an alternative illumination device for a 32 type straight tube fluorescent lamp, and the LED illumination device A13 is a size that can be used as an alternative illumination device for a 40 type straight tube fluorescent lamp. Can be mentioned.

  The LED lighting apparatus according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the LED lighting device according to the present invention can be varied in design in many ways.

A1, A11, A12, A13: LED lighting devices B1, B11, B12: Showcase 1: Support member 2: Light source 3A, 3B: Cap 4: Cover 5: Cable 6: Internal holder 7: Magnetic force holder 11: Main plate 12: side plate portion 13: locking portion 14: back plate portion 15: bent portion 16: annular portion 21: substrate 22: LED
31A, 31B: end plate portion 32A, 32B: cylindrical portion 33A: cable hole 34A: cable groove 35A, 35B: bolt hole 36A, 36B: ring groove 51: connector 61: main portion 62: side portion 63: convex portion 64 Locking part 71: Holder 72: Magnet 80: Casing 81: Top part 82: Shelf part 83: Power supply part 84: Cable 85: Connector 391A, 391B: Screw 392A, 392B: Sealing member 393A, 393B: O-ring 611: Opening 711: Body part 712: Groove 713: Arm part 721: Rib

Claims (5)

A light source unit including a plurality of LEDs arranged in a first direction;
A cable connected to the light source unit;
An elongated cover which covers the plurality of LEDs and transmits light from the light source unit, the elongated cover having the first direction as a longitudinal direction;
An LED lighting device, comprising: a cap provided at the first direction end of the cover and exposing the cable in a second direction intersecting the first direction.   The LED lighting device according to claim 1, wherein the cap transmits light from the light source unit.   The LED lighting device according to claim 1, wherein the cap has a cable groove that is provided so as to surround the first direction and that can accommodate a part of the cable.   The LED lighting device according to any one of claims 1 to 3, further comprising a magnetic force holder attached to the cover and fixed to an external magnetic body. A support member for supporting the light source unit;
The LED lighting device according to any one of claims 1 to 4, further comprising: an internal holder for fixing the light source unit to the support member.

Images