JP4571030B2 - Lighting device - Google Patents

Description

  The present invention relates to an illuminating device in which a plurality of light emitting diodes are arranged in the longitudinal direction on the lower surface of a central plate-shaped portion of an illuminating device main body having a U-shaped cross section that is open on one side.

  In recent years, a lighting device using a plurality of light emitting diodes is known. However, since the light emitting diodes have higher directivity than incandescent bulbs, etc., the light emitting diodes arranged in multiple rows so that the emitted light spreads over a wide angle are aligned with each other so that the tip spreads out, and further transparent Light bent when passing through the cover (for example, see Patent Document 1), or light reflected from the light emitting diode and further bent when passing through the transparent cover (for example, see Patent Document 2) )It has been known.

Japanese Patent Laying-Open No. 2002-163906 (paragraph 0014, FIG. 2) JP 2003-208806 (paragraph 0023, FIG. 5)

  However, in the illuminating device of Patent Document 1, a plurality of light emitting diodes must be arranged, and the mounting angle of the light emitting diodes for each row is different. There was a difficulty in increasing the size of the structure. On the other hand, the illumination device of Patent Document 2 can be applied only when the light emitting direction of the light emitting diode is opposite to the direction of irradiation, and there is a limit to the spread of light because the reflecting substrate is flat. It was.

  The present invention has been made paying attention to such problems, and an object of the present invention is to provide an illuminating device capable of spreading light emitted from a light emitting diode over a wide angle without complicating a component structure. To do.

In order to solve the above-mentioned problem, in the lighting device according to claim 1 of the present invention, a plurality of light-emitting diodes are arranged in the longitudinal direction on the lower surface of the central plate-like portion of the lighting device body having a U-shaped cross section with one opening. The opposing inner side surfaces of both side portions extending downward from the central plate-like portion are configured as reflective surfaces inclined in a direction in which the distance increases toward the free end side of the both side portions , and A plurality of grooves directed in the longitudinal direction are provided at positions where the central part is recessed from the upper and lower end edges of both side parts, and a semi-translucent cover body is attached in the vicinity of the free end.
According to this feature, since a plurality of light sources are arranged on the lower surface of the central plate-like portion of the lighting device main body, sufficient illuminance is obtained, and the light from the light emitting diode is once reflected by the semi-transparent cover body to face both sides. A wide illumination area can be created by re-reflecting the reflection surface provided on the inner surface. Further, since the lighting device main body has a U-shaped cross section and the free end side is covered with the cover body, it is possible to protect a plurality of light emitting diodes on the lower surface of the central plate-like portion. And when carrying, attaching or removing the lighting device, you can hold your fingers and hands in the multiple grooves provided on the outer surface of both sides, so you can hold it securely without slipping, and the multiple grooves Since the contact area between the outer surface of both sides and air is expanded, even when the brightness of the light emitting diode is high, the groove shape on both sides serves as a radiation fin to dissipate the heat of the light emitting diode to the outside Demonstrate.

The lighting device according to claim 2 of the present invention is the lighting device according to claim 1, wherein the cover body is fitted into a longitudinal groove provided in the vicinity of the free end of the opposed inner surface. It is characterized by having.
According to this feature, the cover body can be easily attached to the lighting device main body by providing the longitudinal groove in the vicinity of the free end of the inner surface.

A lighting device according to a third aspect of the present invention is the lighting device according to the first or second aspect, wherein the plurality of light emitting diodes are attached to a plate-like wiring board, and the wiring board is formed in the central plate shape. It is characterized by being fixed to the lower surface of the part.
According to this feature, by attaching the light emitting diodes to the plate-like wiring board, the light emitting diodes can be attached together with the wirings to the illuminating device body, and assembly is easy.

A lighting device according to a fourth aspect of the present invention is the lighting device according to any one of the first to third aspects, wherein the lighting device main body is formed by extrusion molding of aluminum.
According to this feature, the illuminating device main body is formed by extrusion molding of aluminum, so that it is not necessary to newly attach a reflecting material to the opposing inner side surfaces of both side portions.

A lighting device according to a fifth aspect of the present invention is the lighting device according to any one of the first to fourth aspects, wherein left and right end surfaces of the lighting device main body are covered with side end members, and the longitudinal direction of the cover body It is characterized by restraining the movement of.
According to this feature, the left and right end surfaces of the U-shaped illuminating device main body are covered with the side end members, so that the light emitting diode inside can be completely covered from the outside together with the cover body on the lower surface, and the cover There is no need to prepare new parts for holding the body.

  Examples of the present invention will be described below.

  FIG. 1 is a perspective view showing an overall image of a lighting device in an embodiment of the present invention, FIG. 2 is a perspective view showing an example of use of the lighting device, and FIG. 3 is an exploded perspective view of the lighting device. 4 is a side sectional view showing attachment of the magnet to the lighting device body, FIG. 5 is a side sectional view of the lighting device, and FIG. 6 is a side sectional view showing attachment and removal of the lighting device. FIG. 7A is a side sectional view showing an irradiation range of the light emitting diode in a state where the cover member is removed from the lighting device, and FIG. 7B is a state where the cover member is attached to the lighting device. It is a sectional side view which shows the irradiation range of a light emitting diode.

  As shown in FIG. 1, the lighting device 1 includes a horizontally long lighting device body 2 extended in the longitudinal direction by extrusion molding of aluminum, and side end members 12 formed by molding aluminum or hard resin at both ends in the longitudinal direction. 12 are provided, and a semi-transparent thin plate-like cover body (usually translucent plastic is used) 10 is provided on the lower surface portion. In the description of this embodiment, the following description will be made with the longitudinal direction of the lighting device 1 as the left-right direction, the back side of the lighting device 1 as the front, and the front side as the back.

  A plurality of light emitting diodes (hereinafter referred to as LEDs 15a) are provided in the lighting device 1 along the longitudinal direction, and the LEDs are turned on by operating an ON / OFF switchable button 16a provided on the right side of the cover body 10. The LED 15a can emit light downward and can be turned off. The light emission power of these LEDs 15a is fed from the outside by a cord 18 drawn in from the right side end member 12.

  As shown in FIG. 2, the lighting device 1 is mounted along the left and right longitudinal directions of the shelf 31 at the front and rear center positions of the lower surface of the iron shelf 31 installed on the top of the desk 30. As described above, the lighting device 1 is attached to the lower surface of the shelf board 31 to illuminate the under-shelf space that tends to be dark without disturbing the use of the books and the storage box 32 installed on the upper surface of the shelf board 31. it can.

  Therefore, for example, when the desk work is performed on the desk 30 using the personal computer 32 or the like, the work can be comfortably performed. Further, as the characteristics of the LED 15a, it is excellent in power saving and has a long life as compared with a lighting device using a conventionally known fluorescent lamp. In addition, the attachment structure to the shelf board 31 of the illuminating device 1 is demonstrated later.

  The lighting device 1 will be described in detail with reference to FIGS. First, as shown in FIG. 3, the illuminating device main body 2 is extended in the left and right longitudinal directions so that one of the luminaires has a U-shaped cross-section and is open at one side. The groove portion 3a is recessed in the longitudinal direction. A thin plate-like magnet 13 extending in the longitudinal direction can be attached to the groove 3a from above.

  The lighting device main body 2 will be described in detail. As shown in FIG. 4, an adhesive surface 13a is previously formed on the lower surface of the magnet 13 with a double-sided tape or adhesive having adhesive strength, and is formed flat. It is attached to the groove 3a. In attaching the magnet 13, the attachment surface 13 b is attached to the groove portion 3 a in a state of slightly protruding from the upper surface of the central plate-like portion 3.

  A flat lower surface 3b is formed on the back surface of the central plate-like portion 3, and serves as a mounting surface for a wiring board 14 to be described later. Upper and lower edges 4c and 4c projecting in the lateral direction are formed on the front and rear sides of the central plate-shaped portion 3, and side portions 4 and 4 extend downward from the upper edge 4c and 4c. And from the free end part of the side parts 4 and 4, the hook parts 4b and 4b which protrude in a transversal direction are formed.

  A plurality of upper and lower grooves 4a are formed in the longitudinal direction between upper and lower edges 4c and 4c of the outer surfaces of the side portions 4 and 4 and the handle portions 4b and 4b. On the inner side surfaces 6 and 6 inside the lighting device main body 2, upper grooves 6a and 6a are formed in the upper part in the longitudinal direction, and lower grooves 6b and 6b are formed in the lower part in the longitudinal direction.

  Reflecting surfaces 8 that are inclined in a C-shape that are inclined in a direction in which the distance increases toward the free end side in a side view when hung from the substantially central position of both inner side surfaces 6 and 6 to the upper ends of the lower grooves 6b and 6b. 8 is formed. In addition, since both the inner side surfaces 6 and 6 become a reflective surface as it is by forming the illuminating device main body 2 by extrusion molding of aluminum, it is not necessary to newly attach a reflective material.

  As shown in FIG. 3, an outer peripheral edge 12b is projected on the inner surface side of the side end members 12 and 12 located on the left and right end surfaces 7 and 7 side of the lighting device body 2, and a recessed surface 12d is formed in the center. Has been. A pair of fitting pieces 12a project from the two positions before and after the upper end of the recessed surface 12d toward the illuminating device body 2 so that they can be fitted into the pair of upper grooves 6a and 6a of the illuminating device body 2, respectively. Yes.

  The wiring board 14 is formed of a rectangular thin plate extending in the left-right direction, and the illumination unit 15 including the LED 15a described above is provided in a straight line at a predetermined interval along the longitudinal direction at the front-rear intermediate position. The LED 15a is formed by covering a light source body with a transparent synthetic resin material. An operation unit 16 having a button 16a that can be pressed upward is provided on the right side of the wiring board 14, and a control unit 17 that controls the plurality of illumination units 15 is provided on the left side.

  These members (15, 16, 17) are connected by a cord 18 and an internal connection wiring 19. The control unit 17 has a converter function for converting AC power from the cord 18 into DC, controls the illuminance and color of the LED 15a, and controls the LED 15a based on the ON / OFF signal from the operation unit 16 by operating the button 16a. It has functions.

  Next, the cover body 10 will be described. The translucent cover body 10 of the present embodiment is made of a translucent plastic resin material having translucency that is slightly white (or milky white), and has a rectangular shape extending in the left-right direction. It is formed of a thin plate. Stepped end portions 10a and 10a are formed on the front and rear edges of the cover body 10, and an intermediate portion is a light transmitting portion 10b capable of semi-transmitting light from the LED 15a. A button hole 10c penetrating vertically is formed on the right side of the translucent part 10b, and a part of the lower part of the button 16a can be protruded downward when the cover body 10 is attached to the illuminating device body 2 described later.

  Therefore, the attachment of the side end members 12, 12, the wiring board 14, and the cover body 10 to the lighting device body 2 will be described with reference to FIGS. 3 and 5. First, the upper surface or the central plate-like portion 3 of the wiring board 14. Although not particularly shown, a double-sided tape or adhesive having adhesive strength is applied in advance to the lower surface 3b of the circuit board, and the upper surface of the wiring board 14 is attached only by pressing it against the lower surface 3b. As described above, since the plurality of LEDs 15a are integrally disposed on the wiring board 14 and fixed to the lower surface 3b of the central plate-like portion 3, the LEDs 15a can be attached together with the wiring to the lighting device main body 2 and can be easily assembled. It becomes.

  Next, the cover body is slid and moved from both the left and right end faces 7 and 7 of the illuminating device body 2 while fitting the both end portions 10a and 10a of the cover body 10 into the front and rear lower grooves 6b and 6b. 10 is guided and attached in the longitudinal direction. Thus, the cover body 10 can be easily attached to the illuminating device body 2 by providing the grooves in the left and right longitudinal directions in the vicinity of the free ends of the inner side surfaces 6 and 6.

  When attaching the cover body 10, the button 16 a is temporarily removed from the operation unit 16, so that the collision between the button 16 a and the cover body 10 can be avoided when the cover body 10 slides. After the cover body 10 is attached, the operation unit 16 can be easily attached simply by inserting the button 16a again from below through the button hole 10c.

  And it inserts and fixes by inserting the insertion pieces 12a and 12a of the side end members 12 and 12 arrange | positioned at the right and left of the illuminating device main body 2 in the upper groove 6a and 6a, and the outer periphery 12b and 12b are the end surfaces 7, 7, the attachment of the side end members 12, 12 is completed, and the left and right ends of the cover body 10 are held by the lower outer peripheral edge 12 b and the movement in the left-right direction is reliably restrained. There is no need to prepare new parts for holding.

  In the case of a fluorescent lamp generally used as a lighting device, it is known that if a magnet is brought close to the fluorescent lamp, the light source of the fluorescent lamp is adversely affected. However, as in this embodiment, the LED 15a is placed near the magnet 13. When arranged, there is no adverse effect on the magnetic force by the magnet 13.

  In the illuminating device 1 configured as described above, since the plurality of LEDs 15a emit light all at once by the operation of the button 16a as shown in FIG. 5, sufficient illuminance can be obtained and the central plate of the illuminating device body 2 can be obtained. Even if the thin plate-like magnet 13 is attached to the upper surface of the shaped portion 3, no adverse effect is exerted on the light source. Further, since the LED 15a has a compact configuration as compared with the conventional fluorescent lamp, a plurality of the LEDs 15a can be accommodated to increase the illuminance and realize space saving.

  The front and back of the illuminating device main body 2 that is downwardly U-shaped in a side view are covered with the side portions 4 and 4, and the left and right end surfaces 7 and 7 are covered with the side end members 12 and 12, and the lower portion is the cover body 10. Since it is covered, as will be described in detail later, the illumination light of the LED 15a can be concentrated under the shelf (see FIG. 2) of the shelf board 31 to provide sufficient illumination to the space under the shelf. Further, since the LED 15a inside can be completely covered from the outside by the cover body 10, the LED 15a can be protected against an impact from the outside and entry of dust, dust, etc. can be prevented.

  Furthermore, since the contact area between the outer surface of the side portions 4 and 4 and the air is expanded by the plurality of grooves 4a and 4a provided on the side portions 4 and 4, the brightness of the LED 15a is high. In addition, the groove shapes (4a, 4a) of the side portions 4, 4 serve as heat radiation fins and exhibit the effect of radiating the heat of the LED 15a to the outside.

  Next, as shown in FIG. 6, attachment and detachment of the lighting device 1 to the shelf 31 will be described. First, the lighting device 1 can be attached by simply placing a finger on the grooves 4a and 4a on the front and rear side portions 4 of the lighting device body 2 and lifting it up with one hand, with the mounting surface 13b of the magnet 13 as the upper surface. By simply bringing it close to the lower surface position of the shelf plate 31, it can be easily attached by magnetic force.

  In addition, since the sliding is prevented by the plurality of front and rear grooves 4a and 4a, the mounting operation can be performed reliably. In addition, upper and lower edges 4c and 4c projecting in the lateral direction and handle portions 4b and 4b are formed at the vertical positions of the grooves 4a and 4a, so that the positions of the grooves 4a and 4a, which are finger gripping positions, are front and rear. Therefore, easy removal from the side portions 4 and 4 of the finger is prevented. Moreover, since LED15a is lightweight, even if it uses two or more like a present Example, a big load (weight) is not given to the illuminating device main body 2. FIG.

  Thus, by using the magnet 13, the lighting device 1 can be moved and attached to an arbitrary position on the iron shelf 31, and only the lighting device main body 2 having a U-shaped cross section is held and moved by a finger. By doing so, the cover body 10 and the plurality of LEDs 15a are not damaged, and the malfunction due to the contact of the button 16a does not occur.

  Moreover, since the magnet 13 slightly protrudes from the upper surface of the central plate-shaped portion 3, when the lighting device 1 is attached to the shelf plate 31, the lower surface of the shelf plate 31 and the attachment surface 13 b of the magnet 13 are in the center. It is in close contact with the upper surface of the plate-like portion 3 and does not weaken the connection strength. Further, by using the LED 15a as a light source, the lighting device 1 has a thin design without causing the thickness of the lighting device 1 to be as high as possible, and has a configuration that does not protrude as much as possible below the shelf 31 (see FIG. 2). The space can be used effectively, and the user who uses the desk 30 is not given a feeling of pressure.

  Next, in order to remove the illuminating device 1 from the shelf plate 31, it is possible to place the finger on the groove 4 a of the front and rear side portion 4 and hold it with one hand as in the case of attaching the illuminating device 1 described above, and the grooves 4 a and 4 a. Thus, in a state in which the fingertip is prevented from slipping, it can be detached from the shelf board 31 by pulling it strongly against the magnetic force of the magnet 13. Moreover, when the pull-down operation is performed, the hook portions 4b and 4b protruding in the short direction from the side portions 4 and 4 are formed in the front and rear, so that the finger is caught and the lighting device 1 is directed downward (in the removal direction). Thus, it can be pulled more strongly and can be removed easily and reliably.

  Next, as shown in FIG. 7, in order to specifically describe irradiation by light emission of the LED 15 a in the lighting device 1, the lighting device in a state before the assembly is completed with the cover body 10 removed from the lighting device body 2. FIG. 7A in which 1 is shown is compared with FIG. 7B in which the assembly completion state in which the cover body 10 is provided on the illumination device main body 2 is shown.

  First, as shown in FIG. 7A, when the cover member 10 is removed from the lower grooves 6b and 6b of the lighting device body 2, the irradiation angle of the light emitted from the LED 15a is a conventionally known incandescent bulb or the like. Since the directivity is higher than that of the LED 15a, if the LED 15a is made to emit light as it is by operating the button 16a, the area directly below the LED 15a is very bright and illuminates the lower part. Difficult to irradiate.

  Therefore, as shown in FIG. 7 (b), the end portions 10a, 10a of the cover member 10 are fitted into the lower grooves 6b, 6b of the side portions 4, 4 so as to close the downward opening of the lighting device body 2. When the LED 15a emits light by operating the button 16a in the attached state, a part of the light from the LED 15a is reflected by the surface of the light transmitting part 10b and the remaining light passes through the light transmitting part 10b.

  Once, a part of the light reflected by the surface of the translucent part 10b is re-reflected by the reflecting surfaces 8 and 8 provided on the opposing inner side surfaces 6 and 6 of the both side parts 4 and 4, and again into the translucent part 10b. Light is emitted toward the camera. Then, the light passing through the light transmitting portion 10b is dispersed in the light transmitting process, and the light is diffused and irradiated downward. Although not particularly illustrated, not all the light from the reflecting surfaces 8 and 8 passes through the light transmitting portion 10b, and a part of the light from the reflecting surfaces 8 and 8 is reflected again on the surface of the light transmitting portion 10b. The light is repeatedly reflected inside the illuminating device 1, and any light remaining in the interior passes through the light transmitting part 10b and is irradiated downward.

  Therefore, the light emitted from the LED 15 a is irradiated over the entire light transmitting portion 10 b of the cover body 10, and the light passing through the light transmitting portion 10 b is further dispersed and directed toward the space below the shelf of the shelf 31 below. Thus, it is possible to create a wide range of illumination areas. In other words, by providing the cover body 10 in the vicinity of the free ends of the side portions 4 and 4 below the lighting device main body 2, the light emitted from the LED 15a can be spread over a wide angle without complicating the component structure. Device 1 is obtained.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. For example, in the above-described embodiment, it is preferable that the plurality of grooves 4a and 4a are formed in the both side portions 4 and 4 of the lighting device body 2 to prevent the finger from slipping when the lighting device 1 is attached or detached. In another embodiment, the grooves 4a and 4a may not be formed, and a fine uneven friction surface may be formed on the outer surface of the both side portions 4 and 4 to prevent finger slipping.

  Moreover, in the said Example, since the illuminating device main body 2 was formed by extrusion molding of aluminum, the inner side surfaces 6 and 6 which the both sides 4 and 4 oppose can be used as it is, or it can grind | polish and use as the reflective surfaces 8 and 8. Although it was possible, when the inner surface of the illuminating device main body 2 cannot be directly used, a plate having a reflection effect may be attached to the inner side surfaces 6 and 6.

  And in the said Example, although it is preferable from using a magnet 13 for the attachment of the illuminating device 1 to the iron shelf 31, it can repeat attachment and removal, but this invention is not limited to this, The lighting device 1 may be attached by applying a double-sided tape or an adhesive to the top surface of the shelf 31 or the central plate-like portion 3 without using the magnet 13, and according to this attachment, the iron shelf 31 may be attached. Not limited to it, it can be attached to a wooden shelf. It is also possible to use the lighting device as a stand type.

  Furthermore, in order to actively reflect the cover body 7, the upper surface facing the LED is roughened to cause irregular reflection, or the cover body itself is formed in a convex shape downward to make the irradiation range wide angle. Also good.

It is a perspective view which shows the whole image of the illuminating device in the Example of this invention. It is a perspective view which shows the usage example of an illuminating device. It is an exploded assembly perspective view of an illuminating device. It is a sectional side view which shows attachment of the magnet to an illuminating device main body. It is a sectional side view of an illuminating device. It is a sectional side view which shows attachment and removal of an illuminating device. (A) is a sectional side view which shows the irradiation range of the light emitting diode in the state which removed the cover member from the illuminating device, (b) shows the irradiation range of the light emitting diode in the state which attached the cover member to the illuminating device. It is a sectional side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Illuminating device main body 3 Central plate-shaped part 3a Groove part 3b Lower surface 4 Side part 4a Groove 4b Handle part 4c Upper end edge 6 Inner side surface 6a Upper groove 6b Lower groove 7 End surface 8 Reflective surface 10 Semi-transparent cover body 10a End portion 10b Translucent portion 10c Button hole 12 Side end member 12a Insertion piece 12b Outer peripheral edge 12c Code hole 12d Concave surface 13 Thin plate magnet 13a Adhesive surface 13b Mounting surface 14 Wiring board 15 Illumination portion 15a Light emitting diode (LED)
16 Operation part 16a Button 17 Control part 18 Code 19 Connection wiring 30 Desk 31 Iron shelf board 32 Placements, such as a personal computer and stationery

Claims (5)

A lighting device in which a plurality of light emitting diodes are arranged in the longitudinal direction on the lower surface of the central plate-shaped portion of the lighting device main body having a U-shaped cross section that is open on one side, facing both side portions extending downward from the central plate-shaped portion A plurality of inner surfaces are formed of reflecting surfaces that are inclined in a direction in which the distance increases toward the free end side of the both side portions, and are oriented in the longitudinal direction at positions where the central portions are recessed from the upper and lower end edges of both side portions. And a semi-translucent cover body is attached in the vicinity of the free end.   The lighting device according to claim 1, wherein the cover body is fitted in a longitudinal groove provided in the vicinity of the free end of the opposed inner surface.   The lighting device according to claim 1, wherein the plurality of light emitting diodes are attached to a plate-like wiring board, and the wiring board is fixed to a lower surface of the central plate-like portion.   The lighting device according to any one of claims 1 to 3, wherein the lighting device body is formed by extrusion molding of aluminum. The lighting device is covered with a side edge member left and right end faces of the body, the illumination device according to any one of claims 1 to 4 so as to restrain the longitudinal movement of the cover member.

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