JP2014229538A - Led lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which since a conventional LED lighting fixture uses a long illumination substrate, it is relatively easy to expand an illumination range for illuminating a room entirely, but it is impossible to focus light, which allows usage as illuminating a room entirely but does not allow usage as a spot light.SOLUTION: A plurality of illumination substrates are arranged in a radial fashion, and each of the illumination substrates is configured to fluctuate up and down with respect to the radial direction.

Description

  The present invention relates to an LED lighting apparatus that is attached to a ceiling surface and illuminates a room by irradiating light downward.

  There has been an incandescent bulb using an incandescent bulb as described above. However, in order to reduce power consumption, an illuminator using a fluorescent lamp as a light source has been developed. In order to further reduce power consumption, many lighting fixtures using LEDs as light sources have been developed.

  However, since the spread of light emitted from the LED is narrow with respect to an incandescent bulb or a fluorescent lamp, there is a problem that even when trying to illuminate the entire room from the ceiling, it becomes darker as it moves away from the position directly below the lighting fixture.

  Therefore, the LEDs are arranged on the lower surface of the long illumination board and are held so that the illumination board can be swung around the swing axis parallel to the longitudinal direction of the illumination board. Is known so that the irradiation range of light from the LED can be adjusted (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2010-2119015 (FIG. 5)

  Since the conventional LED lighting apparatus uses a long illumination substrate, it is relatively easy to widen the irradiation range so as to illuminate the entire room, but it is not possible to collect light at one point. Therefore, it can be used for lighting the entire room, but cannot be used like a spotlight.

  Then, this invention makes it a subject to provide the LED lighting fixture which can also condense to one point in addition to illuminating the whole room in view of said problem.

  In order to solve the above-described problems, an LED lighting apparatus according to the present invention includes a plurality of illumination boards each having an LED attached to a plate-like lower surface, and changes the angle of the illumination board while being attached to a ceiling surface. In the LED lighting apparatus that increases or decreases the irradiation range by irradiation light, the plurality of illumination boards are arranged radially, and each illumination board can be configured to swing up and down with respect to the radiation direction.

  When the illumination substrate is swung so that the lower surface of the illumination substrate faces outward, the irradiation light spreads outward, so that a wide area is illuminated. Conversely, if the illumination substrate is swung so that the lower surface of the illumination substrate faces inward, the illumination light is condensed at a position directly below the illumination fixture, and becomes spot illumination.

  Note that if the illumination substrate is held so as to be swingable about a swing axis parallel to the radiation direction, the irradiation light can be further diffused and condensed.

  As is clear from the above description, the present invention swings the illuminating substrates arranged in a radial direction in the vertical direction, so that the irradiation range can be adjusted from a wide range to a narrow range.

The figure which shows the structure of one embodiment of this invention The perspective view which shows the state which removed the cover Plan view seen from below showing internal structure Diagram showing the vertical swing of the illumination board in the radial direction The figure which shows the change of the opening angle of two illumination boards

  With reference to FIG. 1, 1 is the LED lighting fixture by this invention, is installed in the ceiling surface CL, and is installed so that the room may be illuminated from upper direction. The illuminance and illumination range of the LED lighting apparatus 1 are controlled by an infrared remote controller 11.

  With reference to FIG. 2, a translucent cover 12 is attached to the lower surface of the LED lighting apparatus 1, and when the cover 12 is removed, the illumination board 3 on which the LEDs 4 are disposed on the lower surface is exposed. The lighting board 3 includes three LEDs 4 and a pair of two LEDs 4 in a pair, and four sets of a total of eight lighting boards 3 are attached.

  Referring to FIG. 3, the two illumination boards 3 for each group are connected to each other by joints 31 at two locations. The joint 31 connects the two illumination boards 3 so that the opening angle of the two illumination boards 3 can be changed. The four sets of illumination boards 3 are arranged radially around the fixing ring 21.

  Referring also to FIG. 4, the upper surface of the inner joint 31 and the fixing ring 21 are connected by a link 21a. A metal fitting 32 is attached to the upper surface of each illumination board 3 in the radial direction, and the metal fitting 32 and the movable ring 5 are connected by a link 5a.

  The movable ring 5 is driven in the vertical direction by a motor (not shown), and the vertical position of the movable ring 5 can be changed by the remote controller 11. Since the joint 31 inside the illumination board 3 is connected to the fixed ring 21 and the metal fitting 32 outside in the radial direction is connected to the movable ring 5, when the movable ring 5 is raised, the outside in the radial direction of the illumination board 3 is pulled up. On the contrary, when the movable ring 5 is lowered, the outer side in the radial direction of the illumination board 3 is pushed down.

  A pin 33 is further fixed on the outer side of the illumination substrate 3 in the radial direction, and the pin 33 is inserted into the cam groove 23 of the cam plate 22. This cam plate 22 is fixed to the upper surface of the mounting ring 2, and as shown in FIG. 5, when the radial direction outside of the illumination board 3 is pulled up, the downward opening angle of the pair of illumination boards 3 widens, and vice versa. When the outer side of the illumination board 3 in the radial direction is pushed down, the attitude of the illumination board 3 can be changed so that the opening angle below the two illumination boards 3 becomes narrower.

  In the above configuration, when the illumination board 3 is horizontal, the light emitted from each LED 4 is irradiated downward with a certain extent. Since it is also slightly diffused by the cover 12, the LED lighting device 1 is illuminated in a range extending around the vertical lower position, but not up to the wall or corner.

  Next, when the movable ring 5 is moved upward by the remote controller 12, the outside in the radial direction of the illumination board 3 is pulled up, and the illumination range is expanded outside. At this time, as shown in FIG. Since the opening angle below the single illumination board 3 is widened, the illumination range is further widened, and the entire room can be widely illuminated.

  On the contrary, when the movable ring 5 is lowered from the state in which the illumination board 3 is horizontal, the outside of the illumination board 3 in the radial direction is pushed down, so that the illumination range is narrowed and the vertically lower part of the LED lighting apparatus 1 is illuminated in a spot shape. It will be. In this case, as shown in FIG. 5, since the opening angle below the two illumination boards 3 constituting each group is narrowed, the illumination range is further narrowed and converged, and the narrow range is concentrated. It will be ready to illuminate.

  Thus, it can adjust continuously by changing the up-and-down position of movable ring 5 from the spot-like illumination range to the state which illuminates the whole room.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 LED lighting fixture 21 Fixing ring 22 Cam board 23 Cam groove 3 Illumination board 4 LED
5 Moveable ring

Claims (2)

  In the LED lighting apparatus comprising a plurality of illumination boards having LEDs mounted on a plate-like lower surface, and changing the angle of the illumination board in a state of being attached to the ceiling surface to increase / decrease the irradiation range by the irradiation light from the LEDs. An LED luminaire characterized in that a plurality of illumination boards are arranged radially, and each illumination board can be swung up and down with respect to the radiation direction. 2. The LED lighting apparatus according to claim 1, wherein the illumination board is held so as to be swingable about a swing axis parallel to the radial direction.

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