JP2013229128A - Lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting apparatus capable of producing a variety of lighting.SOLUTION: A lighting apparatus 1 includes an LED (light source) 4 and a reflector 2 for reflecting light emitted from the LED 4. One LED 4 is arranged at a focal point of the reflector 2, and another light source LEDs 4 are arranged vertically interposing the LED 4. For example, a substrate base 3 of polygonal pillar-shape is installed, and the LEDs 4 are arranged on each face of the substrate base 3, and the reflector 2 is divided on the plurality of focus surfaces 2a opposed to each face of the substrate base 3. Further, a standing wall 2b is formed on the reflector 2, and a hood 5 for further reflecting the light reflected by the standing wall 2b is installed on the upper part of the substrate base 3.

Description

  The present invention relates to an illumination device including a light source and a reflector that reflects the light.

  For example, an illuminating device used for illumination, such as a pachinko machine, includes a light source and a reflector that reflects the light, but the conventional illuminating device has one light source at the focal position of the reflector 102 as shown in FIG. 104 is arranged. In such an illuminating device, the light L emitted from the light source 104 is reflected by the reflector 102 and irradiated as parallel light in the direction indicated by the arrow.

  By the way, regarding an illuminating device including a light source and a reflector, for example, Patent Document 1 discloses that the light source is arranged in an annular shape so that the main optical axis of the light source is directed radially about the main optical axis of the entire device. A configuration has been proposed in which a reflector for reflecting the light irradiated from the main unit in the main axis direction of the entire apparatus is arranged outside the light source, thereby enlarging a portion that appears brightly shining from the main axis direction.

  In Patent Document 2, light emitted from the light source is reflected by the elliptical reflecting surface of the first reflector and travels away from the second reflector, and then the reflected light from the elliptical reflecting surface of the first reflector. Is reflected on the parabolic reflecting surface of the fourth reflector by the reflecting surface of the third reflector, and then the reflected light from the fourth reflector is irradiated to the apex side of the fourth isosceles side A device has been proposed. According to this illuminating device, the dimension in the direction orthogonal to the irradiating direction of the illuminating device can be reduced while preventing the phenomenon that the direct light from the light source is irradiated in the irradiating direction of the illuminating device.

JP 2008-0473302 A JP 2008-235038 A

  Incidentally, as shown in FIG. 9, in the conventional illumination device in which one light source 104 is arranged at the focal position of the reflector 102, the light emitted from the light source 104 is merely simple parallel light reflected by the reflector 102. In addition, there is a problem that the illumination can be performed by one type of light distribution and cannot be irradiated by two or more types of light distribution at the same time, and the width of the lighting effect is narrow.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an illumination device capable of producing various kinds of illumination.

  In order to achieve the above object, according to a first aspect of the present invention, in a lighting device including a light source and a reflector that reflects light emitted from the light source, one light source or a light emitting surface is disposed at a focal point of the reflector. In addition, another light source or light emitting surface is arranged above and below the light source or light emitting surface.

  According to a second aspect of the present invention, in the first aspect of the invention, a polygonal columnar substrate base is erected, the light source is disposed on each surface of the substrate base, and the reflector is disposed on each surface of the substrate base. It is characterized by being divided into a plurality of opposed focus surfaces.

  According to a third aspect of the present invention, in the second aspect of the present invention, a standing wall is formed on the reflector, and a hood for further reflecting light reflected by the standing wall is provided on the upper portion of the substrate base.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the light sources are arranged radially on a flat substrate, and the reflector is divided into a plurality of focus planes corresponding to each set of the radially arranged light sources. In addition, a light guide lens is disposed in the optical axis direction of each light source, and a light emission surface of each light guide lens is disposed above and below the focal point of each focus surface of the reflector.

  According to the first aspect of the present invention, since the light source or the light emitting surface is disposed above and below the focal point of the reflector, the light from each light source is reflected by the reflector, and large, medium, and small images are simultaneously formed. It is possible to produce a wide variety of lighting. In addition, by using a plurality of light sources having different emission colors and light distributions, it is possible to produce a wide variety of lighting effects.

  According to a second aspect of the present invention, a polygonal column-shaped substrate base is erected, three upper and lower light sources are arranged on each surface of the substrate base, and a plurality of focus surfaces that oppose each surface of the substrate base. Therefore, the light can be separated between the plurality of focus surfaces, and different lighting effects can be produced on each focus surface.

  According to the invention of claim 3, since the light reflected by the standing wall formed on the reflector is further reflected by the hood, the light distribution on each focus surface of the reflector can be reflected and reflected, More diverse lighting effects are possible.

  According to the fourth aspect of the present invention, each light exit surface is formed by guiding light from a light source arranged radially on a planar substrate into the light guide lens and emitting light from the light exit surface of each light guide lens. Can be used as a virtual light source, and a wide variety of lighting effects can be achieved. In this case, the light source can be arranged in a plane and the appearance of the lighting device is enhanced because the light source is not directly visible from the outside.

It is a perspective view of the illuminating device which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the illuminating device which concerns on Embodiment 1 of this invention. It is a fragmentary longitudinal cross-section which shows the mode of reflection of the light in the reflector of the illuminating device which concerns on Embodiment 1 of this invention. It is a perspective view of the illuminating device which concerns on Embodiment 2 of this invention. It is a longitudinal cross-sectional view of the illuminating device which concerns on Embodiment 2 of this invention. It is a perspective view of the hood of the illuminating device which concerns on Embodiment 2 of this invention. It is a perspective view which shows another form of the food | hood of the illuminating device which concerns on Embodiment 1 of this invention. It is a perspective view of the illuminating device principal part which concerns on Embodiment 3 of this invention. It is explanatory drawing which shows the mode of reflection of the light in a ru reflector in the conventional illuminating device.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<Embodiment 1>
FIG. 1 is a perspective view of an illumination device according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of the illumination device, and FIG. 3 is a partial longitudinal sectional view showing how light is reflected by a reflector of the illumination device. The lighting device 1 according to the present embodiment includes a bottomed cylindrical reflector 2 that opens in the light emitting direction (upward in FIGS. 1 and 2), and the reflector 2 is hollow at the center. A hexagonal columnar base 3 is erected vertically.

  The inner surface of the reflector 2 constitutes a reflecting surface, and the reflecting surface is substantially perpendicular to the focus surface 2a divided into six so as to face each surface of the substrate base 3 and the outer peripheral edge of each focus surface 2a. Is provided with an upright wall 2b that rises up and forms the inner peripheral surface of the reflector 2.

  Further, on each outer surface of the substrate base 3, one LED 4 as a light source is disposed at the focal position of the focus surface 2a of the reflector 2 facing the outer surface, and the LEDs 4 are disposed above and below the LED 4, respectively. Has been. In this way, since the three LEDs 4 are arranged in the vertical direction on each outer surface of the hexagonal columnar substrate base 3, 3 × 6 = 18 LEDs 4 are provided on the substrate base 3.

  In the illumination device 1 configured as described above, when a current is supplied to the LEDs 4 provided on the substrate base 3, these LEDs 4 are activated to emit light. Here, when attention is paid to the three LEDs 4 arranged in the vertical direction on one of the outer surfaces of the substrate base 3, as shown in FIG. 3, the LEDs 4 are arranged at positions including the focal point F of the opposing focus surface 2 a of the reflector 2. The light L1 emitted from the middle LED 4 is reflected by the focus surface 2a of the reflector 2 and is irradiated vertically upward as parallel light. The light L2 emitted from the LED 4 disposed above the LED 4 disposed at the position including the focal point F is reflected by the focus surface 2a of the reflector 2 and spreads in a diagonally upward direction from the vertical to the inside. The light L3 formed as an image and emitted from the LED 4 disposed below the LED 4 disposed at the position including the focal point F is reflected by the focus surface 2a of the reflector 2 and obliquely upward from the vertical to the outside. The light is focused as a small image. The light that does not strike the focus surface 2a of the reflector 2 is reflected by the vertical wall 2b and used for illumination.

  Therefore, according to the illuminating device 1 according to the present embodiment, the light L1, L2, and L3 emitted from each of the three LEDs 4 arranged above and below the outer surface of the hexagonal columnar substrate base 3 are each focused surface 2a of the reflector 2. The large, medium, and small images can be simultaneously formed by reflecting the light, so that a wide variety of effects can be produced on the illumination device 1. In addition, by using a plurality of LEDs 4 having different emission colors and light distributions, a variety of lighting effects can be achieved.

  Furthermore, according to the illuminating device 1 according to the present embodiment, the upper and lower three LEDs 4 are arranged on each outer surface of the hexagonal columnar substrate base 3, and a plurality of focus surfaces that oppose the reflector 2 to each outer surface of the substrate base 3. Since the light is divided into 2a, light can be separated between the plurality of focus surfaces 2a, and different lighting effects can be produced on each focus surface 2a.

  In the present embodiment, the hexagonal columnar substrate base 3 is used. However, as the substrate base 3, any other polygonal column other than the hexagonal column can be used.

<Embodiment 2>
Next, a second embodiment of the present invention will be described below with reference to FIGS.

  4 is a perspective view of a lighting device according to Embodiment 2 of the present invention, FIG. 5 is a longitudinal sectional view of the lighting device, and FIG. 6 is a perspective view of a hood. In these drawings, FIGS. The same elements as those shown in FIG. 1 are denoted by the same reference numerals, and repetitive description thereof will be omitted below.

  The present embodiment is characterized in that a hexagonal pyramid-shaped hood 5 as shown in FIG. 8 is provided on the upper portion of the substrate base 3 in the first embodiment, and other configurations are the same as those in the first embodiment. The same. The outer surface of the hood 5 constitutes a reflecting surface.

  Thus, in this embodiment, the same effect as in the first embodiment can be obtained. However, as shown in FIG. 5, the light emitted from each LED 4 and reflected by the standing wall 2 b of the reflector 2 is reflected by the hood 5. Reflected further upward on the outer surface, and at this time, the light emitted from each LED 4 and reflected on each focus surface 2a of the reflector 2 is reflected and reflected, so that more various lighting effects are possible. An effect is also obtained. In addition, as the hood 5, a conical shape as shown in FIG. 7 can also be used.

<Embodiment 3>
Next, a third embodiment of the present invention will be described with reference to FIG.

  FIG. 8 is a perspective view of a main part of the illumination device according to the third embodiment of the present invention. In this embodiment, a plane arranged at the center of a reflector (not shown) similar to the first and second embodiments. Although three LEDs 4 are arranged radially on the substrate 6 and not shown, the reflector is divided into a plurality of focus planes corresponding to each group of LEDs 4 arranged radially, and the optical axes of the three LEDs 4 in each group are arranged. A total of three light guide lenses 7, 8, and 9 are arranged in the direction (vertically upward). Each of the three light guide lenses 7, 8, 9 has total reflection surfaces 7 a, 8 a, 9 a with an inclination angle of 45 ° with respect to the optical axis direction (vertical direction) of the LED 4 on each upper surface, Light exit surfaces 7b, 8b, and 9b, which are vertical end surfaces of the respective light guide lenses 7, 8, and 9, are disposed on and below the focal point of each focus surface of the reflector. Specifically, the light exit surface 8b is provided at a position including the focal point F of the reflector focus surface 2a, and the light exit surface 7b is located above the light exit surface 8b by a predetermined distance in the vertical direction, The light exit surface 9b is positioned below a predetermined distance in the vertical direction on the same plane as the light exit surface 8b.

  Thus, when focusing on a set of three LEDs 4 arranged radially on the flat substrate 6, the light emitted vertically upward from each LED 4 enters each light guide lens 7, 8, 9. The light guide lenses 7, 8, 9 travel vertically upward and are totally reflected by the total reflection surfaces 7 a, 8 a, 9 a on the upper surface of each light guide lens 7, 8, 9, and the direction thereof is 90 °. The light is then bent and emitted horizontally from the light exit surfaces 7b, 8b, and 9b of the light guide lenses 7, 8, and 9 and reflected by the focus surface of the reflector.

  Therefore, in the present embodiment, the light emitting surfaces 7b, 8b, 9b of the light guide lenses 7, 8, 9 can be used as virtual light sources. In the present embodiment, as in the first embodiment. In this embodiment, the LED 4 can be arranged in a plane on the flat substrate 6 and the LED 4 is not directly visible from the outside, so that the appearance of the lighting device 1 can be achieved. The effect that the property is enhanced is obtained.

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Reflector 2a Reflector focus surface 2b Reflector standing wall 3 Substrate base 4 LED (light source)
5 Hood 6 Planar substrate 7-9 Light guide lens 7a-9a Total reflection surface of light guide lens 7b-9b Light exit surface of light guide lens L1-L3 Light

Claims (4)

In a lightning device comprising a light source and a reflector that reflects light emitted from the light source,
An illumination device, wherein one light source or light emitting surface is arranged at a focal point of the reflector, and another light source or light emitting surface is arranged above and below the light source or light emitting surface.   A polygonal columnar substrate base is erected, the light source is disposed on each surface of the substrate base, and the reflector is divided into a plurality of focus surfaces facing each surface of the substrate base. The lighting device according to 1.   The lighting device according to claim 2, wherein a standing wall is formed on the reflector, and a hood that further reflects light reflected by the standing wall is provided on an upper portion of the substrate base. The light source is arranged radially on a flat substrate, the reflector is divided into a plurality of focus planes corresponding to each set of light sources arranged radially, and a light guide lens is arranged in the optical axis direction of each light source, 2. The illumination device according to claim 1, wherein the light emitting surface of each light guide lens is disposed above and below the focal point of each focus surface of the reflector.

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