JP3084025U - Lighting device - Google Patents

Abstract

(57) [Problem] To provide a lighting device using a light emitting diode, which can easily illuminate a lateral direction. SOLUTION: In a lighting device, a lens portion 23a serving as a light emitting portion of a plurality of light emitting diodes 23 is formed by a light emitting portion 2.
0, the light emitting direction of the plurality of light emitting diodes 23 is set to the outside of the side surface 20w. Further, the plurality of light emitting diodes 23 are arranged so that the light emitting direction of the plurality of light emitting diodes 23 is radial. Furthermore, the light emission direction of the plurality of light emitting diodes 23 is a horizontal direction.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lighting device used in a Buddhist altar or the like, and more particularly to a lighting device that can efficiently illuminate the surroundings using a light emitting diode as a light source.

[0002]

[Prior art]

 As a lighting device in a Buddhist altar, there is one described in Japanese Utility Model Registration No. 3035678. FIG. 11 is a partially cutaway schematic front view of the lighting device described in the above publication. In FIG. 11, the lighting device 40 includes an upper portion 41 and a lower portion 42, and a pillar 43 connects the upper portion 41 and the lower portion 42. Further, an outer cover 44 is disposed between the upper part 41 and the lower part 42. The light emitting unit 50 is provided at the center of the lighting device 40. The light emitting section 50 includes a plurality of light emitting diodes 51. The light from the light emitting unit 50 can pass through the outer cover 44 and illuminate the outside.

[0003]

[Problems to be solved by the invention]

 However, since the light emitting direction of the plurality of light emitting diodes 51 provided in the light emitting unit 50 of the lighting device 40 is downward, the light of the plurality of light emitting diodes 51 is diffused so as to illuminate also in the lateral direction. In order to achieve this, a plurality of light emitting diodes 51 are covered with a light transmitting case 52, and a light diffusing material 53 such as a silicon resin is filled between the plurality of light emitting diodes 51 and the light transmitting case 52. However, even in this case, the light from the light emitting unit 50 could not sufficiently illuminate the lateral direction. For this reason, the light emitting unit 50 could not sufficiently illuminate especially above the dotted line 55. The present invention has been made in view of such a point, and an object of the present invention is to provide a lighting device capable of sufficiently illuminating a lateral direction by a light emitting unit using a light emitting diode.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, a first device of the present application is as described in claim 1. According to the first invention, the light emitting portions of the plurality of light emitting diodes of the light emitting portion of the lighting device are disposed at different locations on the side surface of the light emitting portion, and the light emitting direction of the plurality of light emitting diodes (the light emitting direction of the light emitting diode). The direction of light emission is, for example, the direction of light emission by the lens-shaped resin cover, which is the light emitting portion.) Is set to the outside of the side surface. The outside can be easily irradiated. For this reason, the light emitting section can illuminate the lateral direction of the lighting device.

Further, a second device is as described in claim 2. According to the second invention, the plurality of light emitting diodes are arranged so that the directions of the light of the plurality of light emitting diodes are radial, in addition to the operation of the first invention. Diodes provide sufficient illumination around the lighting device.

Further, a third aspect of the present invention is as described in claim 3. According to the third invention, in addition to the operation of the first and second inventions, since the light emitting direction of the plurality of light emitting diodes is horizontal, the plurality of light emitting diodes can be used in the lateral direction around the lighting device. Can be easily illuminated.

[0007] Further, a fourth device is as described in claim 4. According to the fourth invention, together with the operation of the first, second or third invention, the lower surface of the case of the light emitting section is an opening surface, and the printed wiring board for connecting the plurality of light emitting diodes is formed by the above method. A cap, which is arranged in contact with the lower end of the case and covers and holds the wiring print substrate, is fixed to the case, and the light emitting portions of the plurality of light emitting diodes are arranged in the cutouts of the case. The connection and arrangement of the plurality of light emitting diodes are facilitated, and the outer shape of the light emitting section is easily constituted by the case and the cap. For this reason, it becomes easy to configure the lighting device according to the first, second or third invention.

[0008]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic front view of a lighting device according to the present invention, partially cut away. In FIG. 1, the lighting device 10 includes a light emitting unit 20 inside the outer cover 14. The main frame members of the lighting device 10 are an upper part 11 and a lower part 12, and a plurality of columns 13 connect the upper part 11 and the lower part 12. The upper part 11 and the lower part 12 are decorated. The outer cover 14 is provided between the upper part 11 and the lower part 12.

The light emitting section 20 includes a plurality of light emitting diodes 23, and light emitted from a lens portion 23 a of the plurality of light emitting diodes 23 spreads between dotted lines 25 and 26. The outer cover 14 is formed so as to allow the light of the light emitting section 20, that is, the light of the light emitting diode 23 to pass therethrough. For example, the pattern of the outer cover 14 is formed of a linear member, and the portion other than the pattern of the outer cover 14 is a space. The wiring cord 33 of the power supply of the light emitting unit 20 is connected to the light emitting unit 20. Further, the lighting device 10 can be suspended by the wiring cord 33.

FIG. 2 is an enlarged view of the light emitting section 20 of the lighting device 10 of FIG. In FIG. 2, the case 21 of the light emitting section 20 has a bell shape, and the lower surface thereof is an opening surface. At the upper end of the case 21, a tubular portion 21p into which the wiring cord 33 (see FIG. 1) is inserted is formed. The cap 22 is disposed so as to cover the lower surface of the case 21 and the lower portion of the side surface 21w. The side wall portion 22 w of the cap 22 is bonded to the side surface 21 w of the case 21. The lens part 23a of the light emitting diode 23 is exposed from each notch (22a, 22b, 22c, etc.) of the side wall part 22w. For this reason, the lens portions 23 a of the plurality of light emitting diodes 23 are arranged at different locations on the side surface 20 w of the light emitting section 20. The lens portion 23a is a light emitting portion of the light emitting diode 23. A printed circuit board 24 described later is provided so as to be sandwiched between the lower end of the case 21 and the cap 22. Therefore, the printed board 24 contacts the lower end of the case 21, and the cap 22 covers and holds the printed board 24. Therefore, a special component for holding the print substrate 24 is not required.

FIG. 3 shows a schematic plan view of the light emitting unit 20 of FIG. In FIG. 3, five light emitting diodes 23 (see FIG. 2) are arranged at equal intervals in five notches (22a, 22b, 22c, 22d, 22e) of the side wall portion 22w. The radiation direction 23b of the light by the minute 23a is radial. Note that the light emission of the light emitting diode 23 actually has a predetermined range of directivity around the light emission direction 23b. For this reason, the light of the light emitting diode 23 can illuminate the periphery of the light emitting unit 20 almost uniformly.

FIG. 4 shows a case 21 of the light emitting unit 20. 4, notches 21a, 21b, 21c, 21d, and 21e are provided at equal intervals below the case 21. A light emitting diode 23 (see FIGS. 2 and 3) is arranged in each of the notches 21a, 21b, 21c, 21d, and 21e.

FIG. 5 shows an arrangement of the light emitting diodes 23 of the light emitting unit 20 of FIG. In FIG. 5, a printed circuit board 24 for wiring connects the light emitting diodes 23 as described later (see FIG. 6). By adjusting the angle α between the printed circuit board 24 and the bottom surface of the light emitting diode 23, the light emission direction 23b can be adjusted. For example, when the light emission direction 23b is set to the horizontal direction in the drawing, the angle α may be set to 90 °. When the light emission direction 23b is upward from the horizontal direction, the angle α is smaller than 90 °. When the light emission direction 23b is lower than the horizontal direction, the angle α is larger than 90 °. do it.

FIG. 6 shows an enlarged plan view of the printed circuit board 24 of FIG. In FIG. 6, the print substrate 24 includes six island-shaped copper foil portions 24a, 24b, 24c, 24d, 24e, and 24f on the surface of the insulating substrate portion 24x. A through hole 24aa is formed in the copper foil portion 24a, through holes 24ba, 24bb are formed in the copper foil portion 24b, through holes 24ca, 24cb are formed in the copper foil portion 24c, and the through holes 24da, 24db are formed in the copper foil portion. The through holes 24ea and 24eb are formed in the copper foil portion 24e, and the through holes 24fa are formed in the copper foil portion 24f. The lead of the light emitting diode 23 is connected to each through hole (24aa, etc.) as shown in the figure and soldered. The plus lead of the wiring cord 33 is soldered to the code connecting part 24ab of the copper foil part 24a, and the minus lead of the wiring cord 33 is soldered to the code connecting part 24fb of the copper foil part 24f. For this reason, the power supply voltage of the wiring cord 33 is applied to one in which five light emitting diodes 23 are connected in series.

FIG. 7 shows a power supply unit of the lighting device 10 of FIG. In FIG. 7, a power supply unit 31 converts an AC 100 volt voltage into a DC voltage. This DC voltage is a voltage suitable for lighting the five light emitting diodes 23 shown in FIG. Reference numeral 31a denotes a terminal for connecting the power supply unit 31 to an AC 100 volt outlet.

FIG. 8 shows the connection of the light emitting unit 20 of FIG. The connector 34a in FIG. 7 is connected to the connector 34b in FIG. The output DC voltage of the power supply unit 31 is applied to the light emitting unit 20 via the switch 32 (see FIG. 7) and the wiring cord 33. For this reason, when the switch 32 is turned on, the light emitting unit 20 is turned on, and when the switch 32 is turned off, the light emitting unit 20 is turned off.

FIG. 9 shows the appearance of the lighting device 10 of FIG. In FIG. 9, the outer cover 14 has a mesh pattern. Since the portion other than the mesh portion is a through hole, the light of the light emitting section 20 (see FIG. 1) can pass through the outer cover 14 and illuminate the outside of the outer cover 14.

FIG. 10 shows a modification of the lighting device 10 of FIG. In FIG. 10, the appearance of the lighting device 10a includes an upper portion 11a, a lower portion 12a, and an outer cover 14a. The outer cover 14a has a substantially cylindrical shape, but has a mesh shape like the outer cover 14, and portions other than the mesh portion are through holes.

In the above embodiment, the light emitting unit 20 includes five light emitting diodes 23, but is not limited to this, and may include a plurality of light emitting diodes other than five. Further, the wiring cord 33 connecting the power supply unit 31 and the light emitting unit 20 is connected using the connectors 34a and 34b, but the connectors 34a and 34b are removed, and the portions where the connectors 34a and 34b are present are provided. May be connected by a wiring cord 33. Further, a battery can be used instead of the power supply unit 31.

[0020]

[Effect of the invention]

 According to the first invention of the present application, the light emitting portions of the plurality of light emitting diodes of the light emitting portion of the lighting device are arranged at different locations on the side surface of the light emitting portion, and the light emitting direction of the plurality of light emitting diodes is changed. Since the side faces are outwardly directed, the outside of the side faces of the light emitting section can be easily irradiated by the plurality of light emitting diodes. For this reason, since the light-emitting part can illuminate the lateral direction of the lighting device, the lighting device according to the present invention can sufficiently illuminate the interior of the Buddhist altar. Therefore, the lighting device according to the present invention can be replaced with a conventional phosphor lamp, candle, lantern, and the like in a Buddhist altar. Further, since the light diffusing material of the light emitting portion as in the conventional example becomes unnecessary, the structure of the light emitting portion can be significantly simplified as compared with the conventional example.

Further, according to the second invention, in addition to the effect of the first invention, the plurality of light emitting diodes are arranged so that the light direction of the plurality of light emitting diodes is radial. Therefore, the lateral direction of the lighting device can be sufficiently illuminated over 360 ° by the plurality of light emitting diodes. For this reason, the lighting device can fully illuminate all directions.

Further, according to the third invention, in addition to the effect of the first or second invention, since the light emission direction of the plurality of light emitting diodes is horizontal, the plurality of light emitting diodes can be used. It is possible to easily irradiate the lateral direction around the light emitting unit. Therefore, the lighting device can sufficiently illuminate, for example, the inside corner of the Buddhist altar.

Further, according to the fourth invention, connection and arrangement of the plurality of light emitting diodes of the lighting device according to the first, second or third invention are facilitated, and the case and the cap are used. Since it is easy to configure the outer shape of the light emitting unit, it is easy to configure the lighting device according to the first, second or third invention. For this reason, the manufacture of the lighting device according to the first, second or third invention is facilitated.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing the outline of the front of a lighting device according to the present invention.

FIG. 2 is an enlarged partial view showing a light emitting unit of the lighting device of FIG. 1;

FIG. 3 is a partial view schematically showing a plane of a light emitting unit of FIG. 2;

FIG. 4 is a partial view showing the front of the case of the light emitting unit of FIG. 2;

FIG. 5 is an explanatory diagram showing an arrangement of light emitting diodes of the light emitting unit of FIG. 2;

FIG. 6 is an enlarged partial view showing a plane of a printed circuit board of the light emitting unit in FIG.

FIG. 7 is a partial view showing a power supply unit of the lighting device of FIG. 1;

FIG. 8 is a partial view showing the connection of the light emitting unit of FIG. 1;

FIG. 9 is a perspective view showing the appearance of the lighting device of FIG. 1;

FIG. 10 is a perspective view showing a modification of the lighting device of FIG. 9;

FIG. 11 is a partially cutaway front view of the front of a conventional lighting device.

[Explanation of symbols]

10, 10a Lighting device 20 Light emitting unit 20w Side surface of light emitting unit 21 Case 21a, 21b, 21c, 21d, 21e Cutout of case 22 Cap 23 Light emitting diode 23a Lens portion of light emitting diode (light emitting portion) 23b Light emission of light emitting diode 23b Direction 24 Printed circuit board

Claims (4)

[Utility model registration claims] 1. A lighting device provided with a light emitting portion of a light emitting diode, wherein light emitting portions of the plurality of light emitting diodes are arranged at different locations on a side surface of the light emitting portion, and a light emitting direction of the plurality of light emitting diodes is changed. A lighting device, wherein the lighting device extends outward from the side surface. 2. The lighting device according to claim 1, wherein the plurality of light-emitting diodes are arranged such that the direction of light emission of the plurality of light-emitting diodes is radial. 3. The lighting device according to claim 1, wherein a light emission direction of the plurality of light emitting diodes is a horizontal direction. 4. The lighting device according to claim 1, wherein a lower surface of a case of the light emitting unit is an opening surface, and the printed wiring board for connecting the plurality of light emitting diodes is formed by the wiring board. A cap that is arranged in contact with the lower end of the case and covers and holds the printed wiring board is fixed to the case,
A lighting device, wherein the light emitting portions of the plurality of light emitting diodes are arranged in cutouts of the case.