JP2013026074A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device having a structure in which illumination angle of an LED lighting device is expanded more than a conventional one.SOLUTION: The lighting device is provided with a base (2) having an installation surface (21) facing the front, a reflecting hood (3) which is arranged on the installation surface so as to surround a center axis line (L) orthogonal to the installation surface in the center of the installation surface, and a plurality of first light-emitting means (4) which are arranged on the installation surface on the outside of the reflecting hood so that a part of emitting light may be reflected by the outer surface of the reflecting hood and the projection range of the light that is not reflected may also include the front direction.

Description

  The present invention relates to an illuminating device, and more particularly to an illuminating device having a configuration in which an illumination angle of a light-emitting diode illuminating device is expanded as compared with the conventional one.

  A conventional light-emitting diode illuminating device is disclosed in Patent Document 1, for example. As shown in FIG. 5, the conventional light-emitting diode illuminating device 1 is a light bulb-type light-emitting diode illuminating device in which a bulb 11 is attached to the upper end of a main body 10, and an installation surface 12 at the upper end of the main body 10. The light emitting element 13 which consists of a light emitting diode module is provided, and the light emitted from the light emitting element 13 is configured to perform illumination.

  However, since the light-emitting diode illuminating device is provided with the light-emitting element 13 at the upper end of the main body, the illuminating range is almost limited to the upper end side, and the lighting effect is not good on the side surface side of the main body.

JP 2011-113861 A specification

  In view of the above problems, an object of the present invention is to provide an illuminating device having a configuration in which the illumination angle of the light-emitting diode illuminating device is expanded as compared with the conventional art.

  In order to achieve the above object, the present invention is disposed on the installation surface so as to surround a base having an installation surface facing forward and a central axis perpendicular to the installation surface at the center of the installation surface. The reflective hood and a part of the emitted light are reflected by the outer surface of the reflective hood, and the light projection range of the non-reflected light also includes the forward direction on the installation surface outside the reflective hood. Provided is a lighting device comprising a plurality of first light emitting means arranged and arranged.

  In the illuminating device, it is preferable that the reflection hood is configured such that both an inner peripheral edge and an outer peripheral edge in a cross section orthogonal to the front direction protrude stepwise along the front direction.

  In the lighting device, the first light emitting means includes a circuit board and a light emitting diode module attached to the circuit board, and the light emitting direction of the light emitting diode module is outside the reflective hood. It is preferable that the circuit board is attached obliquely so as to face the front of the surface and the plate surface of the circuit board is gradually separated from the outer surface of the reflective hood along the forward direction.

  In the lighting device, an angle formed between the circuit board and the installation surface is preferably between 30 ° and 60 °.

  In the illuminating device, it is preferable that a slope support portion capable of supporting the circuit board protrudes on the installation surface.

  In the illuminating device, it is preferable that the reflective hood is fixed to the periphery of the tip of the support base protruding from the vicinity of the center of the installation surface toward the front.

  In the lighting device, a mounting base that is integrally formed with the reflective hood and protrudes forward from the rear end of the reflective hood is formed inside the reflective hood. It is preferable that second light emitting means for projecting light forward is attached.

  The lighting device preferably further includes a fixed frame arranged and configured to press and fix all the first light emitting means against the installation surface.

  In the lighting device, the one end of the base is a material that allows light to pass through, and a cover formed in a dome shape is attached so that the rear end side is recessed and the front end side is a spherical surface, and is attached. It is preferable that the reflective hood and the first and second light emitting means are disposed in a space defined by the recessed portion of the cover and the base.

  In the lighting device, the cover has a two-layer structure including an outer layer portion and an inner layer portion arranged on the rear side of the outer layer portion with a space between the outer layer portion and the rear of the inner layer portion. A plurality of spherical protrusions are preferably formed on the inner surface on the side.

  With the above configuration, the present invention can reflect the light emitted from the plurality of first light emitting means to the side surface side of the base by the reflection hood, and in particular, the illumination angle of the light emitting diode illuminating device can be expanded more than before. Can do.

It is a perspective view in which the external structure of the illuminating device of this invention is shown. It is explanatory drawing in which the structure in the valve | bulb of the illuminating device of this invention is shown. It is an exploded view in which the structure of the illuminating device of this invention is shown. It is a partial cross section by which the structure of the illuminating device of this invention is shown. It is sectional drawing by which the structural example of the conventional illuminating device is shown.

  FIG. 1 is a perspective view showing an external configuration of the lighting device of the present invention. As shown in the drawing, the present invention is a light bulb type light emitting diode lighting device in which a cover 7 is attached to the front end of a base 2.

  By the way, the front-rear direction in this description refers to the vertical direction in the figure, that is, the upper direction is the front and the lower direction is the rear. It does not limit the configuration or use state of the lighting device.

  2 to 4 show a configuration of a preferred embodiment of the lighting device of the present invention.

  As shown in the drawing, the lighting device of the present invention projects forward toward the front of the base 2 having the installation surface 21 facing forward and the center axis L perpendicular to the installation surface at the center of the installation surface 21. In addition to the second light-emitting means 5 arranged and configured so as to surround the central axis L and the second light-emitting means 5 from the periphery, in addition to the reflective hood 3 arranged on the installation surface 21, A plurality of first light emitting means 4 arranged to project light toward the reflective hood 3 are provided on the installation surface 21 outside the reflective hood 3.

  As shown in the figure, near the center of the installation surface 21, the support base 23 is formed to protrude forward, and the reflective hood 3 is fixed to the periphery of the tip 231 of the support base 23. Yes. Further, an inclined surface support portion 22 that can support each first light emitting means 4 protrudes outside the support base 23.

  The reflective hood 3 reflects the light emitted from the plurality of first light emitting means 5 to the side surface side of the base by the outer surface 31, and the light emitted from the second light emitting means 4 by the inner surface 32 to the front surface of the base. Both the inner and outer surfaces are mirror-finished so that they can be reflected to the side, and both the inner peripheral edge (corresponding to the inner surface 32) and the outer peripheral edge (corresponding to the outer surface 31) in the cross section orthogonal to the forward direction are both It is formed in a trumpet shape so as to protrude stepwise along the forward direction.

  Furthermore, a mounting base 33 that projects forward from the rear end of the reflective hood 3 is formed integrally with the reflective hood 3 inside the reflective hood 3.

  The second light emitting means 5 includes a second circuit board 51 attached to the mounting base 33 and a plurality of light emitting diode modules 52 attached to the second circuit board 51.

  Incidentally, a recessed portion 331 is formed around the center of the mounting base 33 so as to be recessed to the support base 23. A penetration through which the recessed portion 331 and the support base 23 are in contact with each other can pass through the recessed portion 331 and the support base 23 and pass, for example, an electric cord that provides power necessary for operation to the second light emitting means 5. A hole is formed.

  The first light emitting means 4 includes a first circuit board 41 attached to the slope support portion 22 and a plurality of light emitting diode modules 42 attached to the first circuit board 41.

  Each slope support portion 22 is formed to have a slope 221 on which the first circuit board 41 of each first light emitting means 4 is placed, and is attached to the first circuit board 41 of each first light emitting means 4. The plate surface of the first circuit board 41 of each first light emitting means 4 is forward so that the light emitting diode module 42 can project light toward the front of the outer surface 31 of the reflective hood 3. It is supported at an angle so as to move away from the outer surface of the reflective hood step by step along the direction. Moreover, although the angle which each 1st circuit board 41 and the installation surface 21 comprise respond | corresponds to the shape of the outer surface 31 of the reflective hood 3, it is preferable that it exists between 30 degrees and 60 degrees, and this In the embodiment, it is set to 45 °.

  The light emitting diode module 42 included in the first light emitting unit 4 projects light toward the reflective hood 3, but the projected range of the emitted light that is not reflected by the outer surface 31 of the reflective hood 3 includes the forward direction. In order to achieve this, it is necessary to use a half-value angle greater than a certain value. In this embodiment, the half-value angle of the light emitting diode module 42 is 90 °.

  Incidentally, in this embodiment, the front end of each slope support portion 22 protrudes from the front end 231 of the support base 23 toward the front.

  This embodiment further includes an annular fixed frame 6 arranged and configured to press and fix all the first light emitting means 4 to the installation surface 21 at once.

  In the fixed frame 6, the first circuit boards 41 of the first light emitting means 4 are respectively attached to the frame bodies 61 in which the passage holes 62 through which light can pass corresponding to the inclined support portions 22 are formed. A pressing portion 63 that can be pressed against the slope support portion 22 is formed.

  The cover 7 attached to the front end of the base 2 is formed in a dome shape so that the rear end side is recessed and the front end side becomes a spherical surface by a material through which light can pass. A reflective hood 3 and first and second light emitting means 4 and 5 are arranged in a space defined by the recessed portion of the cover 7 and the base 2.

  Further, in this embodiment, the cover 7 has a two-layer structure including an outer layer portion 71 and an inner layer portion 72 disposed on the rear side of the outer layer portion 71 with a space between the outer layer portion 71 and the inner layer portion. A plurality of spherical protrusions 721 are formed on the inner surface of the rear side of 72.

  With the above configuration, the present invention can reflect the light emitted from the plurality of first light emitting means to the side surface side of the base by the reflective hood, so that the illumination angle is up to about 240 ° in the longitudinal section that is wider than the conventional one. And can be applied to various lighting means, for example, from a car lamp to a home lighting fixture.

DESCRIPTION OF SYMBOLS 1 Light emitting diode illuminating device 10 Main body 11 Bulb 12 Installation surface 13 Light emitting element 2 Base 21 Installation surface 22 Slope support part 221 Slope 23 Support base 231 Tip 3 Reflective hood 31 Outer surface 32 Inner surface 33 Mounting base 331 Concave part 4 First Light emitting means 41 First circuit board 42 Light emitting diode module 5 Second light emitting means 51 Second circuit board 52 Light emitting diode module 6 Fixed frame 61 Frame body 62 Passing hole 63 Pressing portion 7 Cover 71 Outer layer portion 72 Inner layer portion 721 Spherical surface Protrusion

Claims (10)

A base having an installation surface facing forward;
An annular reflective hood disposed on the installation surface so as to surround a central axis perpendicular to the installation surface from the periphery at the center of the installation surface;
A part of the emitted light is reflected by the outer surface of the reflective hood, and the light projection range of the unreflected light is arranged and configured on the installation surface outside the reflective hood so as to include the forward direction. A plurality of first light emitting means,
A lighting device comprising:   2. The lighting device according to claim 1, wherein an inner peripheral edge and an outer peripheral edge of the reflective hood in a cross section orthogonal to the front direction are gradually projected along the front direction. The first light emitting means comprises a circuit board and a light emitting diode module attached to the circuit board,
In the circuit board, the light projecting direction of the light emitting diode module faces the front surface of the outer surface of the reflective hood, and the plate surface of the circuit board is gradually separated from the outer surface of the reflective hood along the forward direction. The lighting device according to claim 2, wherein the lighting device is attached obliquely.   The lighting device according to claim 3, wherein an angle formed by the circuit board and the installation surface is between 30 ° and 60 °.   5. The lighting device according to claim 3, wherein a slope support portion capable of supporting the circuit board protrudes on the installation surface.   The reflection hood is fixed to a peripheral edge of a tip of a support base protruding toward the front near the center of the installation surface. The lighting device described. A mounting base formed integrally with the reflective hood and projecting forward from the rear end of the reflective hood is formed inside the reflective hood,
The lighting device according to claim 6, wherein second light emitting means for projecting light forward is attached to the mounting base.   8. The apparatus according to claim 1, further comprising a fixing frame arranged and configured to press and fix all of the first light emitting units against the installation surface. The lighting device according to item. The one end of the base is a material that allows light to pass through, and a cover formed in a dome shape is attached so that the rear end side is recessed and the front end side is a spherical surface and protrudes,
9. The reflective hood and the first and second light emitting means are disposed in a space defined by the recessed portion of the cover and the base. The lighting device according to any one of the above. The cover has a two-layer structure consisting of an outer layer portion and an inner layer portion arranged behind the outer layer portion with a gap between the outer layer portion,
The lighting device according to claim 9, wherein a plurality of spherical protrusions are formed on an inner surface on the rear side of the inner layer portion.

Images