JP2012104295A - Led lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To emit downward light at various angles with a horizontal surface.SOLUTION: In the LED lighting system 10 with an LED light source 1a7 mounted on a substrate 2a so as an optical axis 1a7' of the LED light source 1a7 to be perpendicular to the platy substrate 2a perpendicular to the horizontal surface, downward light L3a7e1' having a fourth angle with the horizontal surface is emitted from an emission surface 3a7e1b of a reflective emission part 3a7e1, downward light L3a7e2' having a fifth angle nearly the same as the forth angle with the horizontal surface is emitted from an emission surface 3a7e2b of a reflective emission part 3a7e2, downward light L3a7f2a' having a sixth angle larger than the forth and the fifth angles with the horizontal surface is emitted from an emission surface 3a7f2a of a reflective emission part 3a7f, downward light L3a7f2b' having a seventh angle larger than the forth, the fifth and the sixth angles with the horizontal surface is emitted from an emission surface 3a7f2b of the reflective emission part 3a7f, and downward light L3a7g' having an eighth angle smaller than the seventh angle with the horizontal surface is emitted from an emission surface 3a7g1 of a refracting type emission part 3a7g.

Description

  The present invention relates to an LED lighting device that includes a plate-like substrate that is arranged perpendicular to a horizontal plane, and in which the LED light source is mounted on the substrate so that the optical axis of the LED light source is perpendicular to the substrate.

  In particular, the present invention relates to an LED lighting device that can irradiate downward light having various angles with a horizontal plane without providing an LED light source whose optical axis is directed downward.

  2. Description of the Related Art Conventionally, there has been known an LED lighting device that includes a plate-like substrate that is arranged perpendicular to a horizontal plane, and in which the LED light source is mounted on the substrate so that the optical axis of the LED light source is perpendicular to the substrate. Yes. As an example of this type of LED lighting device, for example, there is one described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-179664).

  In the LED lighting device described in Patent Document 1, the optical axis of the LED light source mounted on the substrate arranged perpendicular to the horizontal plane is directed horizontally. Therefore, a part of the light from the LED light source mounted on the vertical substrate is irradiated downward. In addition, in the LED lighting device described in Patent Document 1, a substrate disposed so as to form an acute angle with respect to the horizontal plane is provided separately from the substrate disposed perpendicular to the horizontal plane. An LED light source is mounted on the lower surface of the. Furthermore, the light from the LED light source mounted on the substrate is irradiated downward. As a result, in the LED lighting device described in Patent Document 1, the LED light source mounted on the vertical substrate and the LED light source mounted on the substrate that forms an acute angle with respect to the horizontal plane are downwardly directed at various angles with the horizontal plane. Light can be irradiated.

JP 2010-179664 A JP 2010-182796 A

  By the way, in the LED lighting device described in Patent Document 1, in order to irradiate downward light at various angles with the horizontal plane, the optical axis is downward, separately from the LED light source in which the optical axis is directed horizontally. It is necessary to provide an LED light source that is directed to the light source. As a result, the LED lighting device described in Patent Document 1 increases the cost of the entire LED lighting device.

  In view of the above problems, an object of the present invention is to provide an LED illumination device that can irradiate downward light at various angles with a horizontal plane without providing an LED light source with an optical axis directed downward. And

  Specifically, in the present invention, it is necessary to provide a substrate for mounting the LED light source with the optical axis oriented downward, separately from the substrate for mounting the LED light source with the optical axis oriented horizontally. It aims at providing the LED illuminating device which can irradiate the downward light which makes various angles with a horizontal surface.

  That is, an object of the present invention is to provide an LED illumination device that can irradiate downward light at various angles with a horizontal plane while reducing the number of substrates.

According to invention of Claim 1, a plate-shaped board | substrate (2a) is arrange | positioned perpendicularly | vertically with respect to a horizontal surface, and the optical axis (1a7 ') of a 1st LED light source (1a7) is perpendicular | vertical with respect to a board | substrate (2a). In the LED lighting device (10) in which the first LED light source (1a7) is mounted on the substrate (2a) so that
A light guide lens (3a) having a first lens part (3a7) for controlling light distribution from the LED light source (1a7) is provided.
A first incident surface (3a7a1) on which light emitted upward from the first LED light source (1a7) at a first angle with the optical axis (1a7 ′) of the first LED light source (1a7) is incident; A second incident surface (3a7b) on which light emitted upward from the first LED light source (1a7) at a second angle larger than the first angle with the optical axis (1a7 ′) of 1a7) and the first LED A third incident surface (3a7a2) on which light emitted downward from the first LED light source (1a7) forms a third angle with the optical axis (1a7 ') of the light source (1a7), and a second incident surface (3a7b) ) And a reflecting surface (3a7c) that reflects light from the first LED light source (1a7) and travels in the direction of the optical axis (1a7 ′) of the first LED light source (1a7), and the first lens portion (3a7) of the light guide lens (3a). Formed into
A reflective first emission part (3a7e1) for emitting light from the first incident surface (3a7a1), a reflective second emission part (3a7e2) for emitting light from the reflection surface (3a7c), A reflective third emitting portion (3a7f) for emitting light from the third incident surface (3a7a2) and a refractive emitting portion (3a7g) for emitting light from the third incident surface (3a7a2). Formed on the first lens portion (3a7) of the light guide lens (3a);
The reflective second emission part (3a7e2) is arranged above the reflective first emission part (3a7e1),
The reflection type third emission part (3a7f) and the refraction type emission part (3a7g) are arranged below the reflection type first emission part (3a7e1),
The light (L3a7e1) from the first incident surface (3a7e1) is reflected by the reflecting surface (3a7e1a) of the reflective first emitting portion (3a7e1), and then the emitting surface (3a7e1b) of the reflecting first emitting portion (3a7e1). ), And is irradiated as downward light (L3a7e1 ′) forming a fourth angle with the horizontal plane,
Light (L3a7e2) from the reflection surface (3a7c) is reflected by the reflection surface (3a7e2a) of the reflection-type second emission portion (3a7e2), and then passes through the emission surface (3a7e2b) of the reflection-type second emission portion (3a7e2). Transmitted and irradiated as downward light (L3a7e2 ′) forming a fifth angle approximately equal to the fourth angle with the horizontal plane,
The light (L3a7f2a) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the first emitting surface of the reflective third emitting portion (3a7f). (3a7f2a) is transmitted and irradiated as downward light (L3a7f2a ′) having a sixth angle larger than the fourth angle and the fifth angle with the horizontal plane,
The light (L3a7f2b) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the second emitting surface of the reflective third emitting portion (3a7f). (3a7f2b) is transmitted and irradiated as downward light (L3a7f2b ′) that forms a seventh angle that is greater than the fourth angle and the fifth angle and greater than the sixth angle with the horizontal plane,
The light (L3a7g) from the third entrance surface (3a7a2) is refracted by the exit surface (3a7g1) of the refraction type exit section (3a7g), and is directed downward to form an eighth angle smaller than the seventh angle with the horizontal plane. An LED lighting device (10) is provided that is irradiated with light (L3a7g ′).

According to invention of Claim 2, it radiates | emits downward from 1st LED light source (1a7) at the 9th angle with the optical axis (1a7 ') of 1st LED light source (1a7), and 3rd entrance plane (3a7a2) ) Is refracted by the exit surface (3a7g1) of the refracting exit section (3a7g), and the downward light (L3a7g ′) forms an eighth angle smaller than 90 ° with the horizontal plane. Is irradiated,
The first LED light source (1a7) emits downward from the first LED light source (1a7) at a tenth angle smaller than the ninth angle with the optical axis (1a7 ') of the first LED light source (1a7), and is transmitted through the third incident surface (3a7a2). The reflected light (L3a7f2b) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then transmitted through the second emitting surface (3a7f2b) of the reflecting third emitting portion (3a7f), 2. The LED illumination device (10) according to claim 1, wherein the LED illumination device (10) is irradiated as downward light (L3a7f2b ′) forming 90 ° with a horizontal plane.

According to the third aspect of the present invention, the reflection type fourth emitting portion (3a7e3) for emitting the light from the first incident surface (3a7a1) or the reflecting surface (3a7c) is provided in the light guide lens (3a). Formed on one lens part (3a7),
The reflective fourth emitting part (3a7e3) is disposed between the reflective first emitting part (3a7e1) and the reflective second emitting part (3a7e2),
Outgoing surface (3a7e3b) of the reflective fourth emitting portion (3a7e3b) between the reflecting surface (3a7e1a) of the reflecting first emitting portion (3a7e1) and the reflecting surface (3a7e3a) of the reflecting fourth emitting portion (3a7e3) And place
Outgoing surface (3a7e2b) of the reflective second emitting portion (3a7e2b) between the reflecting surface (3a7e2a) of the reflecting second emitting portion (3a7e2) and the reflecting surface (3a7e3a) of the reflecting fourth emitting portion (3a7e3) The LED lighting device (10) according to claim 1 or 2, characterized in that is arranged.

According to the invention described in claim 4, the second LED light source (1a1) is mounted on the substrate (2a) so that the optical axis (1a1 ') of the second LED light source (1a1) is perpendicular to the substrate (2a). And
Forming a second lens part (3a1) for controlling light distribution from the second LED light source (1a1) in the light guide lens (3a);
A first incident surface (3a1a) on which light emitted from the second LED light source (1a1) forms an eleventh angle with the optical axis (1a1 ') of the second LED light source (1a1), and a second LED light source (1a1) A second incident surface (3a1b) on which light emitted from the second LED light source (1a1) forms a twelfth angle larger than the eleventh angle with the optical axis (1a1 ′) of the second lens portion (3a1) The second lens portion (3a1) has a reflecting surface (3a1c) that reflects light from the second incident surface (3a1b) of the second LED light source (1a1) and reflects the light in the direction of the optical axis (1a1 ′) of the second LED light source (1a1). ), And
Light from the refraction-type first emission part (3a1d1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1) and the reflection surface (3a1c) of the second lens part (3a1) A refraction-type second emission part (3a1d2) for emitting light, a reflection-type first emission part (3a1e1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1), A reflection type second emission part (3a1e2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) is formed in the second lens part (3a1);
The refraction type second emission part (3a1d2) of the second lens part (3a1) is disposed above the refraction type first emission part (3a1d1) of the second lens part (3a1),
The reflective first emission part (3a1e1) of the second lens part (3a1) is disposed below the refractive first emission part (3a1d1) of the second lens part (3a1),
The reflective second emission part (3a1e2) of the second lens part (3a1) is disposed below the reflective first emission part (3a1e1) of the second lens part (3a1),
The light (L3a1d1) from the first incident surface (3a1a) of the second lens unit (3a1) is refracted by the output surface (3a1d1a) of the refractive first output unit (3a1d1) of the second lens unit (3a1). Irradiates as downward light (L3a1d1 ′) forming a thirteenth angle with the horizontal plane,
The light (L3a1d2) from the reflecting surface (3a1c) of the second lens unit (3a1) is refracted by the emitting surface (3a1d2a) of the refractive second emitting unit (3a1d2) of the second lens unit (3a1), and is horizontal. And is irradiated as downward light (L3a1d2 ′) having a fourteenth angle smaller than the thirteenth angle,
Light (L3a1e1) from the first incident surface (3a1a) of the second lens unit (3a1) is reflected by the reflective surface (3a1e1a) of the reflective first emitting unit (3a1e1) of the second lens unit (3a1). Next, the light is transmitted through the emission surface (3a1e1b) of the reflective first emission part (3a1e1) of the second lens unit (3a1), and forms a fifteenth angle greater than the thirteenth angle and the fourteenth angle with the horizontal plane. Irradiated as downward light (L3a1e1 ′),
The light (L3a1e2) from the reflecting surface (3a1c) of the second lens unit (3a1) is reflected by the reflecting surface (3a1e2a) of the reflective second emitting unit (3a1e2) of the second lens unit (3a1), and then Transmitted through the exit surface (3a1e2b) of the reflective second exit portion (3a1e2) of the second lens portion (3a1), larger than the 13th angle and the 14th angle with the horizontal plane, and from the 15th angle There is provided an LED lighting device (10) characterized by being irradiated as downward light (L3a1e2 ′) having a large sixteenth angle.

According to the fifth aspect of the present invention, the refraction-type third emitting portion (3a1d3) for emitting light from the first incident surface (3a1a) or the reflecting surface (3a1c) of the second lens portion (3a1), The second lens portion (3a1) is formed with a reflective third emitting portion (3a1e3) for emitting light from the first incident surface (3a1a) or the reflecting surface (3a1c) of the second lens portion (3a1). And
The refraction-type third emission part (3a1d3) of the second lens part (3a1) is replaced with the refraction-type first emission part (3a1d1) of the second lens part (3a1) and the refraction-type second emission part of the second lens part (3a1). (3a1d2) and
The reflection type third emission part (3a1e3) of the second lens part (3a1) is replaced with the reflection type first emission part (3a1e1) of the second lens part (3a1) and the reflection type second emission part of the second lens part (3a1). (3a1e2)
The light (L3a1d3) from the first incident surface (3a1a) or the reflective surface (3a1c) of the second lens unit (3a1) is output from the refractive third output unit (3a1d3) of the second lens unit (3a1). Refracted by 3a1d3a) and irradiated as downward light (L3a1d3 ′) that forms a seventeenth angle smaller than the thirteenth angle and larger than the fourteenth angle.
The light (L3a1e3) from the first incident surface (3a1a) or the reflective surface (3a1c) of the second lens unit (3a1) is reflected on the reflective surface (3a1e3) of the reflective third emitting unit (3a1e3) of the second lens unit (3a1). 3a1e3a), and then transmitted through the exit surface (3a1e3b) of the reflective third exit portion (3a1e3) of the second lens portion (3a1), which is larger than the 15th angle and the 16th angle. The LED illumination device (10) according to claim 4, wherein the LED illumination device (10) is irradiated in the form of downward light (L3a1e3 ') having a small 18th angle.

According to the sixth aspect of the present invention, the refraction-type fourth emitting portion (3a1d4) for emitting light from the reflecting surface (3a1c) of the second lens portion (3a1), and the second lens portion (3a1). A reflective fourth emitting portion (3a1e4) for emitting light from the reflecting surface (3a1c) of the second lens portion (3a1),
The refraction type fourth emission part (3a1d4) of the second lens part (3a1) is arranged above the refraction type second emission part (3a1d2) of the second lens part (3a1),
The reflective fourth emission part (3a1e4) of the second lens part (3a1) is arranged below the reflective second emission part (3a1e2) of the second lens part (3a1),
The light (L3a1d4) from the reflection surface (3a1c) of the second lens unit (3a1) is refracted by the output surface (3a1d4a) of the refractive fourth output unit (3a1d4) of the second lens unit (3a1), and is horizontal. And radiated as downward light (L3a1d4 ′) having a nineteenth angle smaller than the fourteenth angle,
The light (L3a1e4) from the reflective surface (3a1c) of the second lens unit (3a1) is reflected by the reflective surface (3a1e4a) of the reflective fourth emitting unit (3a1e4) of the second lens unit (3a1), and then Downward light (L3a1e4 ′) that is transmitted through the emission surface (3a1e4b) of the reflective fourth emission part (3a1e4) of the second lens unit (3a1) and forms a twentieth angle greater than the sixteenth angle with the horizontal plane. The LED illumination device (10) according to claim 5, wherein the LED illumination device (10) is provided.

According to the seventh aspect of the present invention, the refraction-type fifth emission part (3a1d5) for emitting light from the reflection surface (3a1c) of the second lens part (3a1), and the second lens part (3a1). A reflection type fifth emission part (3a1e5) for emitting light from the reflection surface (3a1c) of the second lens part (3a1),
The refraction type fifth emission part (3a1d5) of the second lens part (3a1) is replaced with the refraction type second emission part (3a1d2) of the second lens part (3a1) and the refraction type fourth emission part of the second lens part (3a1). (3a1d4)
The reflection type fifth emission part (3a1e5) of the second lens part (3a1) is replaced with the reflection type second emission part (3a1e2) of the second lens part (3a1) and the reflection type fourth emission part of the second lens part (3a1). (3a1e4),
The light (L3a1d5) from the reflection surface (3a1c) of the second lens unit (3a1) is refracted by the output surface (3a1d5a) of the refractive fifth output unit (3a1d5) of the second lens unit (3a1), and is horizontal. And downward light (L3a1d5 ′) having a twenty-first angle smaller than the fourteenth angle and larger than the nineteenth angle.
The light (L3a1e5) from the reflecting surface (3a1c) of the second lens unit (3a1) is reflected by the reflecting surface (3a1e5a) of the reflective fifth emitting unit (3a1e5) of the second lens unit (3a1), and then The second lens unit (3a1) is transmitted through the output surface (3a1e5b) of the reflective fifth output unit (3a1e5), and forms a downward direction that forms a twenty-second angle that is greater than the sixteenth angle and smaller than the twentieth angle. The LED illuminating device (10) according to claim 6, wherein the LED illumination device (10) is irradiated with the light (L3a1e5 ').

According to the invention described in claim 8, a positive N having a positive N (N is an integer of 3 or more) rectangular tip surface (6z) and N rectangular side surfaces (6a, 6b, 6c, 6d). It has a prismatic support (6),
The first to Nth plate-like substrates (2a, 2b, 2c, 2d) are set to a positive N angle so as to be perpendicular to the horizontal plane and have a (360 / N) ° rotationally symmetric relationship. Arranged on N rectangular side surfaces (6a, 6b, 6c, 6d) of the columnar support (6);
The first LED light source so that the optical axis (1a7 ′) of the first LED light source (1a7) and the optical axis (1a1 ′) of the second LED light source (1a1) are perpendicular to the first plate-like substrate (2a). (1a7) and the second LED light source (1a1) are mounted on the first plate-like substrate (2a),
A plurality of LED light sources (1b7, 1c7, 1d7) having a (360 / N) ° rotational symmetry relationship with the first LED light source (1a7) and the second LED light source (1a1) mounted on the first plate-like substrate (2a) , 1b1, 1c1, 1d1) are mounted on the second to Nth plate-shaped substrates (2b, 2c, 2d),
In the LED illumination device (10) including a base (7) for supplying current to each LED light source (1a7, 1b7, 1c7, 1d7, 1a1, 1b1, 1c1, 1d1),
First to Nth light guide lenses (3a, 3b, 3c, 3d) for controlling light distribution of the light from each LED light source (1a7, 1b7, 1c7, 1d7, 1a1, 1b1, 1c1, 1d1), (360 / N) degrees so as to have a rotationally symmetric relationship,
Light emitted upward from the first LED light source (1a7) at an angle with the optical axis (1a7 ′) of the first LED light source (1a7) mounted on the first plate-like substrate (2a) is incident. Light emitted upward from the first LED light source (1a7) at a second angle greater than the first angle with the first incident surface (3a7a1) and the optical axis (1a7 ′) of the first LED light source (1a7) The second incident surface (3a7b) on which the light enters and the optical axis (1a7 ′) of the first LED light source (1a7) form a third angle and light emitted downward from the first LED light source (1a7) enters A three-incidence surface (3a7a2) and a reflection surface (3a7c) that reflects light from the second incidence surface (3a7b) to make light proceed in the direction of the optical axis (1a7 ′) of the first LED light source (1a7). The first lens portion (3a7) of the first light guide lens (3a) )
A reflective first emission part (3a7e1) for emitting light from the first incident surface (3a7a1), a reflective second emission part (3a7e2) for emitting light from the reflection surface (3a7c), A reflective third emitting portion (3a7f) for emitting light from the third incident surface (3a7a2) and a refractive emitting portion (3a7g) for emitting light from the third incident surface (3a7a2). Formed in the first lens portion (3a7) of the first light guide lens (3a);
The reflective second emission part (3a7e2) is arranged above the reflective first emission part (3a7e1),
The reflection type third emission part (3a7f) and the refraction type emission part (3a7g) are arranged below the reflection type first emission part (3a7e1),
The light (L3a7e1) from the first incident surface (3a7e1) is reflected by the reflecting surface (3a7e1a) of the reflective first emitting portion (3a7e1), and then the emitting surface (3a7e1b) of the reflecting first emitting portion (3a7e1). ), And is irradiated as downward light (L3a7e1 ′) forming a fourth angle with the horizontal plane,
Light (L3a7e2) from the reflection surface (3a7c) is reflected by the reflection surface (3a7e2a) of the reflection-type second emission portion (3a7e2), and then passes through the emission surface (3a7e2b) of the reflection-type second emission portion (3a7e2). Transmitted and irradiated as downward light (L3a7e2 ′) forming a fifth angle approximately equal to the fourth angle with the horizontal plane,
The light (L3a7f2a) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the first emitting surface of the reflective third emitting portion (3a7f). (3a7f2a) is transmitted and irradiated as downward light (L3a7f2a ′) having a sixth angle larger than the fourth angle and the fifth angle with the horizontal plane,
The light (L3a7f2b) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the second emitting surface of the reflective third emitting portion (3a7f). (3a7f2b) is transmitted and irradiated as downward light (L3a7f2b ′) that forms a seventh angle that is greater than the fourth angle and the fifth angle and greater than the sixth angle with the horizontal plane,
The light (L3a7g) from the third entrance surface (3a7a2) is refracted by the exit surface (3a7g1) of the refraction type exit section (3a7g), and is directed downward to form an eighth angle smaller than the seventh angle with the horizontal plane. Irradiated with light (L3a7g ′),
The light incident from the second LED light source (1a1) is incident on the optical axis (1a1 ′) of the second LED light source (1a1) mounted on the first plate-like substrate (2a) at a ninth angle. The first incident surface (3a1a) and the optical axis (1a1 ′) of the second LED light source (1a1) and the light emitted from the second LED light source (1a1) are incident at a tenth angle greater than the ninth angle. Light that travels in the direction of the optical axis (1a1 ′) of the second LED light source (1a1) by reflecting light from the second incident surface (3a1b) and the second incident surface (3a1b) of the second lens portion (3a1) A reflecting surface (3a1c) to be formed on the second lens portion (3a1) of the first light guide lens (3a),
Light from the refraction-type first emission part (3a1d1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1) and the reflection surface (3a1c) of the second lens part (3a1) A refraction-type second emission part (3a1d2) for emitting light, a reflection-type first emission part (3a1e1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1), A reflection type second emission part (3a1e2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) is formed in the second lens part (3a1);
The refraction type second emission part (3a1d2) of the second lens part (3a1) is disposed above the refraction type first emission part (3a1d1) of the second lens part (3a1),
The reflective first emission part (3a1e1) of the second lens part (3a1) is disposed below the refractive first emission part (3a1d1) of the second lens part (3a1),
The reflective second emission part (3a1e2) of the second lens part (3a1) is disposed below the reflective first emission part (3a1e1) of the second lens part (3a1),
The light (L3a1d1) from the first incident surface (3a1a) of the second lens unit (3a1) is refracted by the output surface (3a1d1a) of the refractive first output unit (3a1d1) of the second lens unit (3a1). Irradiates as downward light (L3a1d1 ′) forming an eleventh angle with the horizontal plane,
The light (L3a1d2) from the reflecting surface (3a1c) of the second lens unit (3a1) is refracted by the emitting surface (3a1d2a) of the refractive second emitting unit (3a1d2) of the second lens unit (3a1), and is horizontal. And is irradiated as downward light (L3a1d2 ′) having a twelfth angle smaller than the eleventh angle,
Light (L3a1e1) from the first incident surface (3a1a) of the second lens unit (3a1) is reflected by the reflective surface (3a1e1a) of the reflective first emitting unit (3a1e1) of the second lens unit (3a1). Next, the light is transmitted through the emission surface (3a1e1b) of the reflective first emission part (3a1e1) of the second lens unit (3a1), and forms a thirteenth angle greater than the eleventh and twelfth angles with the horizontal plane. Irradiated as downward light (L3a1e1 ′),
The light (L3a1e2) from the reflecting surface (3a1c) of the second lens unit (3a1) is reflected by the reflecting surface (3a1e2a) of the reflective second emitting unit (3a1e2) of the second lens unit (3a1), and then It is transmitted through the exit surface (3a1e2b) of the reflective second exit portion (3a1e2) of the second lens portion (3a1), and is larger than the eleventh angle and the twelfth angle, and the thirteenth angle. There is provided an LED lighting device (10) characterized by being irradiated as downward light (L3a1e2 ′) having a large fourteenth angle.

  In the LED lighting device (10) according to claim 1, the plate-like substrate (2a) is arranged perpendicular to the horizontal plane. The first LED light source (1a7) is mounted on the substrate (2a) so that the optical axis (1a7 ') of the first LED light source (1a7) is perpendicular to the substrate (2a). That is, the optical axis (1a7 ') of the first LED light source (1a7) is oriented in the horizontal direction.

  Furthermore, in the LED illumination device (10) according to claim 1, a light guide lens (3a) having a first lens portion (3a7) for controlling light distribution of the light from the LED light source (1a7) is provided. Yes. Specifically, light emitted upward from the first LED light source (1a7) is incident on the optical axis (1a7 ′) of the first LED light source (1a7) at a first angle such as 0 ° to 33 °. A first incident surface (3a7a1) and an optical axis (1a7 ') of the first LED light source (1a7) and a second angle such as 33 ° to 90 ° that is larger than a first angle such as 0 ° to 33 °. The second incident surface (3a7b) on which light emitted upward from the first LED light source (1a7) at an angle and the optical axis (1a7 ′) of the first LED light source (1a7) are, for example, 0 ° to 90 °. Reflecting light from the third incident surface (3a7a2) on which the light emitted downward from the first LED light source (1a7) at such a third angle and the second incident surface (3a7b) are reflected. In the direction of the optical axis (1a7 ′) of the 1LED light source (1a7) A reflecting surface (3a7c) for converting the light to travel is formed on the first lens portion (3a7) of the light guide lens (3a).

  In the LED illumination device (10) according to claim 1, the light from the first incident surface (3a7a1) for emitting the light from the first incident surface (3a7a1) and the light from the reflective surface (3a7c) From the reflection type second emission part (3a7e2) for emitting light, the reflection type third emission part (3a7f) for emitting light from the third incidence surface (3a7a2), and the third incidence surface (3a7a2) And a refraction type emitting part (3a7g) for emitting the light of the first lens part (3a7) of the light guide lens (3a).

  Furthermore, in the LED lighting device (10) according to claim 1, the reflective second emission part (3a7e2) is disposed above the reflective first emission part (3a7e1). Further, the reflection type third emission part (3a7f) and the refraction type emission part (3a7g) are arranged below the reflection type first emission part (3a7e1).

  Specifically, in the LED lighting device (10) according to claim 1, the light (L3a7e1) from the first incident surface (3a7a1) is reflected by the reflecting surface (3a7e1a) of the reflective first emitting portion (3a7e1). Then, the light is transmitted through the emission surface (3a7e1b) of the reflective first emission part (3a7e1), and irradiated as downward light (L3a7e1 ′) having a fourth angle such as 72 ° with the horizontal plane. Is done.

  Further, in the LED lighting device (10) according to claim 1, light (L3a7e2) from the reflective surface (3a7c) is reflected by the reflective surface (3a7e2a) of the reflective second emission part (3a7e2), and then It is transmitted through the exit surface (3a7e2b) of the reflective second exit section (3a7e2) and forms a fifth angle, for example 71 °, which is substantially equal to a fourth angle 72 °, for example 72 °, with the horizontal plane. Irradiated as downward light (L3a7e2 ′).

  Furthermore, in the LED lighting device (10) according to claim 1, light (L3a7f2a) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), Next, the light is transmitted through the first emission surface (3a7f2a) of the reflective third emission part (3a7f), and is larger than the horizontal plane and a fourth angle such as 72 ° and a fifth angle such as 71 °. For example, it is irradiated as downward light (L3a7f2a ′) having a sixth angle such as 83 °.

  In the LED illumination device (10) according to claim 1, the light (L3a7f2b) from the third incident surface (3a7a2) is reflected by the reflective surface (3a7f1) of the reflective third emitting portion (3a7f), Next, the light is transmitted through the second emission surface (3a7f2b) of the reflective third emission part (3a7f), and is greater than the horizontal plane and a fourth angle such as 72 ° and a fifth angle such as 71 °. And, it is irradiated as downward light (L3a7f2b ′) having a seventh angle such as 90 ° that is larger than a sixth angle such as 83 °.

  Furthermore, in the LED lighting device (10) according to claim 1, light (L3a7g) from the third incident surface (3a7a2) is refracted by the exit surface (3a7g1) of the refraction type exit section (3a7g), and is horizontal. Then, the light is irradiated as downward light (L3a7g ′) having an eighth angle such as 71 ° smaller than the seventh angle such as 90 °.

  Therefore, according to the LED lighting device (10) according to claim 1, the LED whose optical axis is directed downward as in the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). Without having to provide a light source, it is possible to irradiate downward light (L3a7e1 ′, L3a7e2 ′, L3a7f2a ′, L3a7f2b ′, L3a7g ′) at various angles with the horizontal plane.

  In other words, according to the LED lighting device (10) described in claim 1, the optical axis is directed downward as in the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). There is no need to provide a substrate for mounting the LED light source separately from the substrate for mounting the LED light source with the optical axis oriented horizontally, and downward light (L3a7e1 ′ having various angles with the horizontal plane) , L3a7e2 ′, L3a7f2a ′, L3a7f2b ′, and L3a7g ′).

  In other words, according to the LED lighting device (10) of the first aspect, the number of substrates can be reduced as compared with the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664), and various horizontal planes can be used. It is possible to irradiate downward light (L3a7e1 ′, L3a7e2 ′, L3a7f2a ′, L3a7f2b ′, L3a7g ′) with a certain angle.

  The LED illumination device (10) according to claim 2, wherein the first LED light source (1a7) forms an ninth angle such as 65 ° to 90 ° with the optical axis (1a7 ') of the first LED light source (1a7). The light (L3a7g) emitted downward from the light and transmitted through the third entrance surface (3a7a2) is refracted by the exit surface (3a7g1) of the refractive exit section (3a7g), and is less than 90 ° with respect to the horizontal plane, for example. The light is irradiated as downward light (L3a7g ′) having an eighth angle such as 71 °.

  Furthermore, in the LED lighting device (10) according to claim 2, the optical axis (1a7 ′) of the first LED light source (1a7) is smaller than a ninth angle such as 65 ° to 90 °, for example, 30 ° to 40 °. A light (L3a7f2b) having a luminous intensity higher than that of light (L3a7g) emitted downward from the first LED light source (1a7) at a tenth angle such as ° and transmitted through the third incident surface (3a7a2) Is reflected by the reflection surface (3a7f1) of the reflective third emission part (3a7f), and then transmitted through the second emission surface (3a7f2b) of the reflection-type third emission part (3a7f). It is irradiated as downward light (L3a7f2b ′) formed.

  In other words, in the LED illuminating device (10) according to claim 2, a high angle emitted downward from the first LED light source (1a7) at a small angle with the optical axis (1a7 ') of the first LED light source (1a7). Light having a luminous intensity is irradiated as downward light (L3a7f2b ′) forming 90 ° with the horizontal plane.

  Therefore, according to the LED illumination device (10) according to claim 2, the low emitted from the first LED light source (1a7) at a small angle with the optical axis (1a7 ′) of the first LED light source (1a7). Compared with the case where light having a luminous intensity is irradiated as light having a downward angle of 90 ° with the horizontal plane, the area directly below the LED lighting device (10) can be illuminated brightly.

  In the LED illumination device (10) according to claim 3, the reflection type fourth emission part (3a7e3) for emitting light from the first incident surface (3a7a1) or the reflection surface (3a7c) is a light guide lens (3a). ) First lens portion (3a7). Further, the reflection type fourth emission part (3a7e3) is disposed between the reflection type first emission part (3a7e1) and the reflection type second emission part (3a7e2).

  Specifically, in the LED lighting device (10) according to claim 3, the reflective surface (3a7e1a) of the reflective first light emitting portion (3a7e1) and the reflective surface (3a7e3a) of the reflective fourth light emitting portion (3a7e3) The emission surface (3a7e3b) of the reflective fourth emission part (3a7e3) is disposed between the two. Furthermore, the output surface (3a7e2) of the reflection type second emission part (3a7e2) is disposed between the reflection surface (3a7e2a) of the reflection type second emission part (3a7e2) and the reflection surface (3a7e3a) of the reflection type fourth emission part (3a7e3). 3a7e2b) is arranged.

  Therefore, according to the LED lighting device (10) of claim 3, the reflective surface (3a7e1a) of the reflective first light emitting portion (3a7e1) and the reflective surface (3a7e3a) of the reflective fourth light emitting portion (3a7e3) Are arranged adjacent to each other, or are formed continuously, or the reflective surface (3a7e2a) of the reflective second emitting portion (3a7e2) and the reflective surface (3a7e3a) of the reflective fourth emitting portion (3a7e3) However, the thickness dimension of the lens portion (3a7) of the light guide lens (3a) (the direction of the optical axis (1a7 ′) of the first LED light source (1a7) is larger than the case where they are arranged adjacent to each other. Dimension) can be reduced.

  That is, according to the LED lighting device (10) of claim 3, the upper end of the reflective surface (3a7e1a) of the reflective first light emitting portion (3a7e1) and the reflective surface of the reflective fourth light emitting portion (3a7e3) ( 3a7e3a) and the lower end of the reflective surface (3a7e2a) of the reflective second light emitting portion (3a7e2) and the reflective surface (3a7e3a) of the reflective fourth light output portion (3a7e3a). The thickness dimension of the lens part (3a7) of the light guide lens (3a) (the dimension of the first LED light source (1a7) in the optical axis (1a7 ') direction) is made thinner than when the upper end part is matched. be able to.

  In the LED illumination device (10) according to claim 4, the second LED light source (1a1) is mounted on the substrate (1a1) so that the optical axis (1a1 ′) of the second LED light source (1a1) is perpendicular to the substrate (2a). 2a). That is, the optical axis (1a1 ') of the second LED light source (1a1) is oriented in the horizontal direction.

  Furthermore, in the LED lighting device (10) according to claim 4, the second lens portion (3a1) for controlling the light distribution of the light from the second LED light source (1a1) is formed on the light guide lens (3a). Yes. Specifically, the first light incident from the second LED light source (1a1) forms an eleventh angle such as 0 ° to 33 ° with the optical axis (1a1 ′) of the second LED light source (1a1). The incident surface (3a1a) and the optical axis (1a1 ′) of the second LED light source (1a1) have a twelfth angle such as 33 ° to 90 ° larger than an eleventh angle such as 0 ° to 33 °. Then, the second LED light source (1a1) reflects light from the second incident surface (3a1b) on which the light emitted from the second LED light source (1a1) and the second incident surface (3a1b) of the second lens unit (3a1) are reflected. A reflection surface (3a1c) for making light traveling in the direction of the optical axis (1a1 ′) of the light source (1a1) is formed on the second lens portion (3a1).

  Further, in the LED illumination device (10) according to claim 4, a refraction type first emitting part (3a1d1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1), Refraction-type second emission part (3a1d2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1), and light from the first incidence surface (3a1a) of the second lens part (3a1) The second reflection type first emission part (3a1e1) for emitting light and the second reflection type emission part (3a1e2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) are second. It is formed in the lens part (3a1).

  Furthermore, in the LED illumination device (10) according to claim 4, the second refraction type emission part (3a1d2) of the second lens part (3a1) is the refraction type first emission part (3a1d1) of the second lens part (3a1). ). In addition, the reflective first emission part (3a1e1) of the second lens part (3a1) is disposed below the refractive first emission part (3a1d1) of the second lens part (3a1). Furthermore, the reflective second emission part (3a1e2) of the second lens part (3a1) is arranged below the reflective first emission part (3a1e1) of the second lens part (3a1).

  Specifically, in the LED lighting device (10) according to claim 4, the light (L3a1d1) from the first incident surface (3a1a) of the second lens unit (3a1) is refracted by the second lens unit (3a1). The light is refracted by the emission surface (3a1d1a) of the first emission part (3a1d1) of the mold, and irradiated as downward light (L3a1d1 ′) forming a thirteenth angle such as 37 ° with the horizontal plane. Furthermore, the light (L3a1d2) from the reflecting surface (3a1c) of the second lens unit (3a1) is refracted by the emitting surface (3a1d2a) of the refractive second emitting unit (3a1d2) of the second lens unit (3a1). The light is irradiated as downward light (L3a1d2 ′) having a horizontal plane and a 14th angle such as 23 ° smaller than a 13th angle such as 37 °.

  In the LED illumination device (10) according to claim 4, the light (L3a1e1) from the first incident surface (3a1a) of the second lens portion (3a1) is reflected from the second lens portion (3a1). Reflected by the reflecting surface (3a1e1a) of the one emitting part (3a1e1) and then transmitted through the emitting surface (3a1e1b) of the reflective first emitting part (3a1e1) of the second lens part (3a1) The light is irradiated as downward light (L3a1e1 ′) having a thirteenth angle such as 37 ° and a fifteenth angle such as 43 ° that is larger than a fourteenth angle such as 23 °. Furthermore, the light (L3a1e2) from the reflective surface (3a1c) of the second lens unit (3a1) is reflected by the reflective surface (3a1e2a) of the reflective second emitting unit (3a1e2) of the second lens unit (3a1). Next, the light is transmitted through the exit surface (3a1e2b) of the reflective second exit portion (3a1e2) of the second lens portion (3a1), and the horizontal plane and a thirteenth angle such as 37 ° and 23 ° The light is irradiated as downward light (L3a1e2 ′) having a sixteenth angle such as 53 ° larger than the fourteenth angle and larger than the fifteenth angle such as 43 °.

  Therefore, according to the LED illumination device (10) according to claim 4, the LED whose optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). Without having to provide a light source, it is possible to irradiate downward light (L3a1d1 ′, L3a1d2 ′, L3a1e1 ′, L3a1e2 ′) at various angles with the horizontal plane.

  In other words, according to the LED lighting device (10) described in claim 4, the optical axis is directed downward as in the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). The substrate for mounting the LED light source is not required to be provided separately from the substrate for mounting the LED light source with the optical axis oriented horizontally, and downward light (L3a1d1 ′ forming various angles with the horizontal plane) , L3a1d2 ′, L3a1e1 ′, L3a1e2 ′).

  In other words, according to the LED lighting device (10) of the fourth aspect, the number of substrates is reduced and the horizontal plane is various as compared with the LED lighting device described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-179664). It is possible to irradiate downward light L3a1d1 ′, L3a1d2 ′, L3a1e1 ′, and L3a1e2 ′ that form an appropriate angle.

  In the LED illuminating device (10) according to claim 5, a refraction-type third emitting part for emitting light from the first incident surface (3a1a) or the reflecting surface (3a1c) of the second lens part (3a1) ( 3a1d3) and a reflective third emitting portion (3a1e3) for emitting light from the first incident surface (3a1a) or the reflecting surface (3a1c) of the second lens portion (3a1) are the second lens portion (3a1). ). Further, the refraction-type third emission part (3a1d3) of the second lens part (3a1) is the refraction-type second emission part (3a1d1) of the second lens part (3a1) and the refraction-type second of the second lens part (3a1). It arrange | positions between the radiation | emission parts (3a1d2). Further, the reflection type third emission part (3a1e3) of the second lens part (3a1) is the reflection type second emission part (3a1e1) of the second lens part (3a1) and the reflection type second of the second lens part (3a1). It arrange | positions between the radiation | emission parts (3a1e2).

  Specifically, in the LED lighting device (10) according to claim 5, the light (L3a1d3) from the first incident surface (3a1a) or the reflective surface (3a1c) of the second lens portion (3a1) is converted into the second lens. Refracted by the exit surface (3a1d3a) of the refraction-type third exit part (3a1d3) of the part (3a1), and a horizontal plane and a 14th angle smaller than the 13th angle such as 37 °, for example 23 ° Irradiation is performed in the form of larger downward light (L3a1d3 ′) having a seventeenth angle such as 30 °.

  In the LED illumination device (10) according to claim 5, light (L3a1e3) from the first incident surface (3a1a) or the reflective surface (3a1c) of the second lens unit (3a1) is transmitted to the second lens unit (3a1). 3a1) is reflected by the reflecting surface (3a1e3a) of the reflective third emitting portion (3a1e3), and then is transmitted through the emitting surface (3a1e3b) of the reflecting third emitting portion (3a1e3) of the second lens portion (3a1). And a downward light (L3a1e3 ′) having an 18th angle such as 50 ° which is larger than a 15th angle such as 43 ° and smaller than a 16th angle such as 53 °. Is irradiated.

  Therefore, according to the LED lighting device (10) according to claim 5, the horizontal plane is smaller than a thirteenth angle such as 37 ° and larger than a fourteenth angle such as 23 °, for example 30 °. The downward light L3a1d3 ′ forming the seventeenth angle is not irradiated, and the eighteenth such as 50 °, for example, 50 ° smaller than the fifteenth angle such as 43 ° and smaller than the sixteenth angle, eg, 53 °. Is formed by irradiation light (L3a1d1 ′, L3a1d2 ′, L3a1d3 ′, L3a1e1 ′, L3a1e2 ′, L3a1e3 ′) from the LED illuminating device (10) rather than the case where the downward light (L3a1e3 ′) having an angle of Illuminance unevenness of the light distribution pattern can be reduced.

  In the LED illuminating device (10) according to claim 6, a refraction type fourth emitting portion (3a1d4) for emitting light from the reflecting surface (3a1c) of the second lens portion (3a1), and a second lens portion. A reflective fourth emitting portion (3a1e4) for emitting light from the reflecting surface (3a1c) of (3a1) is formed in the second lens portion (3a1). In addition, the refractive fourth emission part (3a1d4) of the second lens part (3a1) is arranged above the refractive second emission part (3a1d2) of the second lens part (3a1). Furthermore, the reflective fourth emission part (3a1e4) of the second lens part (3a1) is disposed below the reflective second emission part (3a1e2) of the second lens part (3a1).

  Specifically, in the LED lighting device (10) according to claim 6, the light (L3a1d4) from the reflecting surface (3a1c) of the second lens unit (3a1) is refracted by the second lens unit (3a1). Downward light (L3a1d4 ′) that is refracted by the emission surface (3a1d4a) of the four emission parts (3a1d4) and forms a nineteenth angle, for example, 5 °, which is smaller than a fourteenth angle, for example, 23 °. ) And irradiated.

  In the LED illumination device (10) according to claim 6, the light (L3a1e4) from the reflection surface (3a1c) of the second lens unit (3a1) is reflected by the second fourth lens unit (3a1). Is reflected by the reflecting surface (3a1e4a) of the portion (3a1e4), and then transmitted through the emitting surface (3a1e4b) of the reflective fourth emitting portion (3a1e4) of the second lens portion (3a1), for example, 53 ° For example, the downward light (L3a1e4 ′) having a twentieth angle such as 60 ° larger than the sixteenth angle is irradiated.

  Therefore, according to the LED lighting device (10) according to claim 6, downward light (L3a1d4 ′) that forms a nineteenth angle, for example, 5 °, which is smaller than a fourteenth angle, for example, 23 °, with the horizontal plane. ) Is not irradiated, and the LED illumination device (L3a1e4 ′) is not irradiated with downward light (L3a1e4 ′) that forms a twentieth angle such as 60 ° that is larger than a sixteenth angle such as 53 °. 10) (L3a1d1 ′, L3a1d2 ′, L3a1d3 ′, L3a1d4 ′, L3a1e1 ′, L3a1e2 ′, L3a1e3 ′, L3a1e4 ′) can be irradiated over a wide range (wide angle).

  In the LED illumination device (10) according to claim 7, a refraction type fifth emission part (3a1d5) for emitting light from the reflection surface (3a1c) of the second lens part (3a1), and a second lens part. A reflection type fifth emitting portion (3a1e5) for emitting light from the reflecting surface (3a1c) of (3a1) is formed in the second lens portion (3a1). Further, the refraction-type fifth emission part (3a1d5) of the second lens part (3a1) is the refraction-type second emission part (3a1d2) of the second lens part (3a1) and the refraction-type fourth of the second lens part (3a1). It arrange | positions between the output parts (3a1d4). Further, the reflection type fifth emission part (3a1e5) of the second lens part (3a1) is the reflection type second emission part (3a1e2) of the second lens part (3a1) and the reflection type fourth of the second lens part (3a1). It arrange | positions between the output parts (3a1e4).

  Specifically, in the LED lighting device (10) according to claim 7, the light (L3a1d5) from the reflecting surface (3a1c) of the second lens portion (3a1) is reflected from the refractive type second of the second lens portion (3a1). Refracted by the exit surface (3a1d5a) of the five exit sections (3a1d5), and smaller than a fourteenth angle such as 23 ° and greater than a nineteenth angle such as 5 °, for example 16 °. Irradiated as downward light (L3a1d5 ′) forming the 21st angle.

  In the LED illumination device (10) according to claim 7, the light (L3a1e5) from the reflection surface (3a1c) of the second lens portion (3a1) is reflected by the second fifth emission portion of the second lens portion (3a1). Is reflected by the reflection surface (3a1e5a) of the portion (3a1e5), and then transmitted through the emission surface (3a1e5b) of the reflective fifth emission portion (3a1e5) of the second lens portion (3a1), for example, 53 ° It is irradiated as downward light (L3a1e5 ′) having a twenty-second angle such as 57 ° that is larger than the sixteenth angle and smaller than a twentieth angle such as 60 °.

  Therefore, according to the LED lighting device (10) of claim 7, the horizontal plane is smaller than the 14th angle such as 23 °, for example, and is larger than the 19th angle such as 5 °, for example 16 °. The downward light (L3a1d5 ′) forming the 21st angle is not irradiated and is larger than the 16th angle such as 53 ° with the horizontal plane and smaller than the 20th angle such as 60 °, for example 57 ° Light emitted from the LED illumination device (10) (L3a1d1 ′, L3a1d2 ′, L3a1d3 ′, L3a1d4 ′, L3a1d5 ′, L3a1e1 ′, L3a1e2 than when the downward light (L3a1e5 ′) forming the 22nd angle is not irradiated. ', L3a1e3', L3a1e4 ', L3a1e5') can reduce illuminance unevenness of the light distribution pattern.

  In the LED lighting device (10) according to claim 8, a positive N (N is an integer of 3 or more) rectangular tip surface (6z) and N rectangular side surfaces (6a, 6b, 6c, 6d). The support part (6) of the regular N prism shape which has is provided. Further, the first to Nth plate-like substrates (2a, 2b, 2c, 2d) are positive so as to be perpendicular to the horizontal plane and have a (360 / N) ° rotationally symmetric relationship. It arrange | positions on the N rectangular side surfaces (6a, 6b, 6c, 6d) of the N prismatic support part (6).

  Furthermore, in the LED lighting device (10) according to claim 8, the optical axis (1a7 ′) of the first LED light source (1a7) and the optical axis (1a1 ′) of the second LED light source (1a1) are in the first plate shape. The first LED light source (1a7) and the second LED light source (1a1) are mounted on the first plate-like substrate (2a) so as to be perpendicular to the substrate (2a). In addition, the first LED light source (1a7) and the second LED light source (1a1) mounted on the first plate-like substrate (2a) and a plurality of LED light sources (1b7, 1c7) having a (360 / N) degree rotational symmetry relationship. , 1d7, 1b1, 1c1, 1d1) are mounted on the second to Nth plate-like substrates (2b, 2c, 2d). Further, a base (7) for supplying current to each LED light source (1a7, 1b7, 1c7, 1d7, 1a1, 1b1, 1c1, 1d1) is provided.

  Further, in the LED illumination device (10) according to claim 8, the first to the first for controlling the light distribution from the LED light sources (1a7, 1b7, 1c7, 1d7, 1a1, 1b1, 1c1, 1d1). N light guide lenses (3a, 3b, 3c, 3d) are arranged so as to have a (360 / N) ° rotationally symmetric relationship.

  Furthermore, in the LED lighting device (10) according to claim 8, the optical axis (1a7 ') of the first LED light source (1a7) mounted on the first plate-like substrate (2a) and, for example, 0 ° to 33 °. The first incident surface (3a7a1) on which the light emitted upward from the first LED light source (1a7) at a first angle as described above is incident, and the optical axis (1a7 ′) of the first LED light source (1a7), for example A second incident surface on which light emitted upward from the first LED light source (1a7) is incident at a second angle such as 33 ° to 90 ° that is larger than the first angle such as 0 ° to 33 °. (3a7b) and the light emitted downward from the first LED light source (1a7) at a third angle such as 0 ° to 90 ° with the optical axis (1a7 ′) of the first LED light source (1a7). And a third incident surface (3a7a2) and a second incident surface (3a7 The reflective surface (3a7c) that reflects the light from b) into light that travels in the direction of the optical axis (1a7 ′) of the first LED light source (1a7) is the first of the first light guide lens (3a). It is formed in the lens part (3a7).

  In the LED illumination device (10) according to claim 8, the light from the first incident surface (3a7a1) for emitting the light from the first incident surface (3a7a1) and the light from the reflective surface (3a7c). From the reflection type second emission part (3a7e2) for emitting light, the reflection type third emission part (3a7f) for emitting light from the third incidence surface (3a7a2), and the third incidence surface (3a7a2) The refraction type light emitting part (3a7g) for emitting the light of is formed on the first lens part (3a7) of the first light guide lens (3a).

  Furthermore, in the LED lighting device (10) according to claim 8, the reflective second emission part (3a7e2) is arranged above the reflective first emission part (3a7e1). Further, the reflection type third emission part (3a7f) and the refraction type emission part (3a7g) are arranged below the reflection type first emission part (3a7e1).

  Specifically, in the LED lighting device (10) according to claim 8, the light (L3a7e1) from the first incident surface (3a7a1) is reflected by the reflecting surface (3a7e1a) of the reflective first emitting portion (3a7e1). Then, the light is transmitted through the emission surface (3a7e1b) of the reflective first emission part (3a7e1), and irradiated as downward light (L3a7e1 ′) having a fourth angle such as 72 ° with the horizontal plane. Is done.

  Further, in the LED lighting device (10) according to claim 8, light (L3a7e2) from the reflective surface (3a7c) is reflected by the reflective surface (3a7e2a) of the reflective second emission part (3a7e2), and then The reflection-type second emission part (3a7e2) is transmitted through the emission surface (3a7e2b) and has a horizontal surface and a downward angle that forms a fifth angle, for example, 71 °, which is substantially equal to a fourth angle, for example, 72 °. Irradiated as light (L3a7e2 ′).

  Further, the light (L3a7f2a) from the third incident surface (3a7a2) is reflected by the reflective surface (3a7f1) of the reflective third emission portion (3a7f), and then the first of the reflective third emission portion (3a7f). The outgoing surface (3a7f2a) is transmitted downward and forms a downward angle with the horizontal plane that forms a fourth angle, for example 72 °, and a sixth angle, for example 83 °, which is greater than a fifth angle, for example 71 °. Irradiated as light (L3a7f2a ′).

  In the LED illumination device (10) according to claim 8, light (L3a7f2b) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), Next, the light is transmitted through the second emission surface (3a7f2b) of the reflective third emission part (3a7f), and is greater than the horizontal plane and a fourth angle such as 72 ° and a fifth angle such as 71 °. And, it is irradiated as downward light (L3a7f2b ′) having a seventh angle such as 90 ° that is larger than a sixth angle such as 83 °.

  Furthermore, in the LED lighting device (10) according to claim 8, the light (L3a7g) from the third incident surface (3a7a2) is refracted by the emission surface (3a7g1) of the refraction type emission part (3a7g), and is horizontal. Then, the light is irradiated as downward light (L3a7g ′) having an eighth angle such as 71 ° smaller than the seventh angle such as 90 °.

  Therefore, according to the LED illumination device (10) described in claim 8, the LED whose optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). Without having to provide a light source, it is possible to irradiate downward light (L3a7e1 ′, L3a7e2 ′, L3a7f2a ′, L3a7f2b ′, L3a7g ′) at various angles with the horizontal plane.

  In other words, according to the LED illumination device (10) described in claim 8, the optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). There is no need to provide a substrate for mounting the LED light source separately from the substrate for mounting the LED light source with the optical axis oriented horizontally, and downward light (L3a7e1 ′ having various angles with the horizontal plane) , L3a7e2 ′, L3a7f2a ′, L3a7f2b ′, and L3a7g ′).

  In other words, according to the LED lighting device (10) of the eighth aspect, the number of substrates can be reduced as compared with the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664), and various horizontal planes can be used. It is possible to irradiate downward light (L3a7e1 ′, L3a7e2 ′, L3a7f2a ′, L3a7f2b ′, L3a7g ′) with a certain angle.

  In the LED lighting device (10) according to claim 8, the optical axis (1a1 ′) of the second LED light source (1a1) mounted on the first plate-like substrate (2a) and, for example, 0 ° to 33 °. The first incident surface (3a1a) on which the light emitted from the second LED light source (1a1) enters at a ninth angle as described above, and the optical axis (1a1 ′) of the second LED light source (1a1), for example, 0 ° A second incident surface (3a1b) on which light emitted from the second LED light source (1a1) is incident at a tenth angle such as 33 ° to 90 °, which is larger than a ninth angle such as ˜33 °. A reflecting surface (3a1c) that reflects light from the second incident surface (3a1b) of the second lens portion (3a1) and makes light travel in the direction of the optical axis (1a1 ′) of the second LED light source (1a1). Is formed in the second lens portion (3a1) of the first light guide lens (3a). It is.

  Furthermore, in the LED illumination device (10) according to claim 8, a refraction type first emitting part (3a1d1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1), Refraction-type second emission part (3a1d2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1), and light from the first incidence surface (3a1a) of the second lens part (3a1) A reflective first light emitting portion (3a1e1) for emitting light and a reflective second light emitting portion (3a1e2) for emitting light from the reflective surface (3a1c) of the second lens portion (3a1), Two lens portions (3a1) are formed.

  Further, in the LED illumination device (10) according to claim 8, the second refraction-type emission part (3a1d2) of the second lens part (3a1) is the refraction-type first emission part (3a1d1) of the second lens part (3a1). ). Further, the reflection type first emission part (3a1e1) of the second lens part (3a1) is disposed below the refraction type first emission part (3a1d1) of the second lens part (3a1). In addition, the reflective second emission part (3a1e2) of the second lens part (3a1) is disposed below the reflective first emission part (3a1e1) of the second lens part (3a1).

  Specifically, in the LED lighting device (10) according to claim 8, light (L3a1d1) from the first incident surface (3a1a) of the second lens unit (3a1) is refracted by the second lens unit (3a1). The light is refracted by the exit surface (3a1d1a) of the mold first exit portion (3a1d1), and is irradiated as downward light (L3a1d1 ′) that forms an eleventh angle such as 37 ° with the horizontal plane.

  Furthermore, in the LED lighting device (10) according to claim 8, the light (L3a1d2) from the reflection surface (3a1c) of the second lens portion (3a1) is emitted from the second refraction type second emission of the second lens portion (3a1). Downward light (L3a1d2 ′) that is refracted by the exit surface (3a1d2a) of the portion (3a1d2) and forms a twelfth angle such as 23 ° that is smaller than an eleventh angle such as 37 ° with the horizontal plane. Will be irradiated.

  In the LED illumination device (10) according to claim 8, light (L3a1e1) from the first incident surface (3a1a) of the second lens portion (3a1) is reflected by the second lens portion (3a1). Reflected by the reflecting surface (3a1e1a) of the one emitting part (3a1e1) and then transmitted through the emitting surface (3a1e1b) of the reflective first emitting part (3a1e1) of the second lens part (3a1) The light is irradiated as downward light (L3a1e1 ′) having an eleventh angle such as 37 ° and a thirteenth angle such as 43 ° that is larger than a twelfth angle such as 23 °.

  Furthermore, in the LED lighting device (10) according to claim 8, the light (L3a1e2) from the reflection surface (3a1c) of the second lens portion (3a1) is reflected by the second second emission portion of the second lens portion (3a1). Is reflected by the reflecting surface (3a1e2a) of the portion (3a1e2), and then transmitted through the emitting surface (3a1e2b) of the reflective second emitting portion (3a1e2) of the second lens portion (3a1), for example, 37 ° Downward light having an eleventh angle such as and a twelfth angle such as 23 ° and a fourteenth angle such as 53 ° greater than a thirteenth angle such as 43 °. (L3a1e2 ′) is irradiated.

  Therefore, according to the LED illumination device (10) described in claim 8, the LED whose optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). Without having to provide a light source, it is possible to irradiate downward light (L3a1d1 ′, L3a1d2 ′, L3a1e1 ′, L3a1e2 ′) at various angles with the horizontal plane.

  In other words, according to the LED illumination device (10) described in claim 8, the optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). The substrate for mounting the LED light source is not required to be provided separately from the substrate for mounting the LED light source with the optical axis oriented horizontally, and downward light (L3a1d1 ′ forming various angles with the horizontal plane) , L3a1d2 ′, L3a1e1 ′, L3a1e2 ′).

  In other words, according to the LED lighting device (10) of the eighth aspect, the number of substrates can be reduced as compared with the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664), and various horizontal planes can be used. It is possible to irradiate downward light L3a1d1 ′, L3a1d2 ′, L3a1e1 ′, and L3a1e2 ′ that form an appropriate angle.

1 is a schematic vertical sectional view of an LED lighting device 10 according to a first embodiment. It is an expansion vertical sectional view of lens part 3a7 etc. of light guide lens 3a of LED lighting device 10 of a 1st embodiment. It is the figure which showed the optical path of the light from LED light source 1a7 in the vertical cross section shown in FIG. It is the figure which showed the optical path of the light from LED light source 1a7 in the vertical cross section shown in FIG. It is the figure which showed the optical path of the light from LED light source 1a7 in the vertical cross section shown in FIG. It is an expansion vertical sectional view of lens part 3a1 etc. of light guide lens 3a of LED lighting device 10 of a 1st embodiment. It is the figure which showed the optical path of the light from LED light source 1a1 in the vertical cross section shown in FIG. It is the figure which showed the optical path of the light from LED light source 1a1 in the vertical cross section shown in FIG. It is the figure which showed the optical path of the light from LED light source 1a1 in the vertical cross section shown in FIG. It is the figure which showed the optical path of the light from LED light source 1a1 in the vertical cross section shown in FIG. It is the perspective view etc. which showed the principal part of the street lamp 100 to which the LED lighting apparatus 10 of 2nd Embodiment was applied. It is the figure which showed the vertical cross section of the LED illuminating device 10 of 2nd Embodiment containing the center axis 6 'of the support part 6 of the square prism shape perpendicular | vertical to the vertical cross section shown to FIG. 11 (B). It is the perspective view etc. which showed the principal part of the street lamp 100 with which the LED lighting apparatus 10 of 3rd Embodiment was applied. It is the figure which showed the vertical cross section of the LED illuminating device 10 of 3rd Embodiment containing the central axis 6 'of the support part 6 of the square prism shape perpendicular | vertical to the vertical cross section shown to FIG. 13 (B).

  Hereinafter, 1st Embodiment of the LED lighting apparatus of this invention is described. FIG. 1 is a schematic vertical sectional view of an LED lighting device 10 according to the first embodiment. FIG. 2 is an enlarged vertical sectional view of the lens portion 3a7 and the like of the light guide lens 3a of the LED lighting device 10 according to the first embodiment. 3 to 5 are diagrams showing an optical path of light from the LED light source 1a7 in the vertical cross section shown in FIG. FIG. 6 is an enlarged vertical sectional view of the lens portion 3a1 and the like of the light guide lens 3a of the LED lighting device 10 according to the first embodiment. 7 to 10 are diagrams showing the optical path of light from the LED light source 1a1 in the vertical cross section shown in FIG.

  In the LED lighting device 10 of the first embodiment, the substrate 2 a is connected to the base member 4 as shown in FIG. 1. Further, two or more LED light sources 1a1, 1a2, 1a7 such as three are mounted on the substrate 2a. Further, the lens unit 3a1 for controlling the light distribution from the LED light source 1a1, the lens unit 3a2 for controlling the light distribution from the LED light source 1a2, and the light distribution control for the light from the LED light source 1a7. LED light sources 1a1, 1a2, and 1a7 are covered with a light guide lens 3a having a lens portion 3a7.

  Specifically, the LED lighting device 10 of the first embodiment extends vertically upward from the floor surface (ground, road surface), for example, to irradiate the floor surface (ground, road surface) (not shown). For example, it is configured to be connectable to a wall (post) (not shown). Specifically, as shown in FIG. 1, the base member 4 is connected to a wall (post) or the like so that the plate-like substrate 2a is perpendicular to a horizontal plane (not shown). The LED lighting device 10 of one embodiment is used.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 1, the optical axes 1a1 ′, 1a2 ′, 1a7 ′ of the LED light sources 1a1, 1a2, 1a7 are perpendicular to the substrate 2a. The LED light sources 1a1, 1a2, 1a7 are mounted on the substrate 2a. That is, the optical axes 1a1 ', 1a2', 1a7 'of the LED light sources 1a1, 1a2, 1a7 are directed in the horizontal direction.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 1, the lens portion 3a1 and the lens portion 3a2 of the light guide lens 3a are connected via a bridging portion 3a12. Further, the lens portion 3a2 and the lens portion 3a7 of the light guide lens 3a are connected via a bridging portion 3a27. Further, the lens portions 3a1, 3a2, 3a7 of the light guide lens 3a are connected to the substrate 2a via the leg portions 3a01, 3a70. As a result, the lens portion 3a1 of the light guide lens 3a is positioned with respect to the LED light source 1a1 mounted on the substrate 2a, and the lens portion 3a2 of the light guide lens 3a is positioned with respect to the LED light source 1a2 mounted on the substrate 2a. The lens portion 3a7 of the light guide lens 3a is positioned with respect to the LED light source 1a7 mounted on the substrate 2a.

  Further, in the LED lighting device 10 of the first embodiment, the lens portions 3a1, 3a2, 3a7 of the light guide lens 3a are obtained by pushing out the cross-sectional shape shown in FIG. 1 in the front side-back side direction of FIG. It is formed in a shape (columnar shape).

  Specifically, in the LED lighting device 10 of the first embodiment, as shown in FIG. 2, the upward direction emitted from the LED light source 1 a 7 at a small angle such as 0 ° to 33 ° with the optical axis 1 a 7 ′. A convex incident surface 3a7a1 on which the light of the light enters is formed on the lens portion 3a7 of the light guide lens 3a. Further, for example, a flat incident surface 3a7b on which upward light emitted from the LED light source 1a7 is incident with the optical axis 1a7 ′ at a large angle such as 33 ° to 90 ° is a lens portion of the light guide lens 3a. 3a7. Further, a concave incident surface 3a7a2 on which downward light emitted from the LED light source 1a7 is incident on the optical axis 1a7 ′ at an angle of, for example, 0 ° to 90 ° is formed on the lens portion 3a7 of the light guide lens 3a. Has been. Further, the light L3a7e2, L3a7e3a, and L3a7e4 that reflects light from the incident surface 3a7b and travels in the direction of the approximate optical axis 1a7 ′ (see FIGS. 3C, 4A, and 4B) are reflected. The surface 3a7c is formed on the lens portion 3a7 of the light guide lens 3a.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 2, a reflection type emitting portion 3 a 7 e 1 for emitting light L 3 a 7 e 1 (see FIG. 3A) from the incident surface 3 a 7 a 1, and the incident surface A reflection type emitting portion 3a7e3 for emitting light L3a7e3 (see FIG. 3B) from 3a7a1 (see FIG. 3B) and light L3a7e3a (see FIG. 3C) from the reflecting surface 3a7c, and light L3a7e2 from the reflecting surface 3a7c (see FIG. 3) 4 (A)) and a reflection type emission part 3a7e2 for emitting light L3a7e4 (see FIG. 4B) from the reflection surface 3a7c, and a reflection type emission part 3a7e4 for emitting light L3a7e4. Lens portion 3a7.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 2, reflection for emitting light L3a7f2a, L3a7f2b (see FIGS. 4C and 5A) from the incident surface 3a7a2. A mold exit portion 3a7f and a refractive exit portion 3a7g for emitting light L3a7g (see FIG. 5B) from the entrance surface 3a7a2 are formed on the lens portion 3a7 of the light guide lens 3a.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 2, the reflection-type emission part 3a7e2 is arranged above the reflection-type emission part 3a7e1. Further, the reflection type emission part 3a7e3 is disposed between the reflection type emission part 3a7e1 and the reflection type emission part 3a7e2. Further, the reflection type emission part 3a7e4 is arranged above the reflection type emission part 3a7e2.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 2, the reflective emission part 3a7f and the refraction type emission part 3a7g are arranged below the reflection type emission part 3a7e1.

  Specifically, in the LED illumination device 10 according to the first embodiment, as shown in FIG. 3A, the incident surface is radiated upward from the LED light source 1a7 at an angle of, for example, 15 ° with the optical axis 1a7 ′. The light L3a7e1 transmitted through 3a7a1 and traveling in the direction of the approximate optical axis 1a7 ′ is reflected by the reflection surface 3a7e1a (see FIG. 2) of the reflection-type emission portion 3a7e1, and then the emission surface 3a7e1b (see FIG. 2) of the reflection-type emission portion 3a7e1. 2), and is irradiated as downward light L3a7e1 ′ having an angle of, for example, 72 ° with the horizontal plane.

  In the LED illumination device 10 of the first embodiment, as shown in FIG. 3B, the LED light source 1a7 radiates upward at an angle of, for example, 33 ° with the optical axis 1a7 ′, and enters the incident surface 3a7a1. The light L3a7e3 that is transmitted and travels approximately in the direction of the optical axis 1a7 ′ is reflected by the reflection surface 3a7e3a (see FIG. 2) of the reflection-type emission portion 3a7e3, and then the emission surface 3a7e3b (see FIG. 2) of the reflection-type emission portion 3a7e3. ), And is irradiated as downward light L3a7e3 ′ having an angle of, for example, 71 ° with the horizontal plane.

  Furthermore, in the LED illumination device 10 of the first embodiment, as shown in FIG. 3C, the incident surface 3a7b is emitted upward from the LED light source 1a7 at an angle of, for example, 80 ° with the optical axis 1a7 ′. The light L3a7e3a that is transmitted and then reflected by the reflecting surface 3a7c and traveling in the direction of the approximate optical axis 1a7 ′ is reflected by the reflecting surface 3a7e3a (see FIG. 2) of the reflecting type emitting unit 3a7e3, and then the reflecting type emitting unit. The light is transmitted through the exit surface 3a7e3b (see FIG. 2) of 3a7e3, and is irradiated as downward light L3a7e3b having an angle of, for example, 70 ° with the horizontal plane.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 4A, the incident surface 3a7b is radiated upward from the LED light source 1a7 at an angle of, for example, 65 ° with the optical axis 1a7 ′. The light L3a7e2 that is transmitted and then reflected by the reflecting surface 3a7c and traveling in the direction of the approximate optical axis 1a7 'is reflected by the reflecting surface 3a7e2a (see FIG. 2) of the reflecting type emitting unit 3a7e2, and then the reflecting type emitting unit. The light is transmitted through the emission surface 3a7e2b (see FIG. 2) of 3a7e2, and is irradiated as downward light L3a7e2 ′ that forms an angle of 71 ° with the horizontal plane, for example.

  Furthermore, in the LED illumination device 10 of the first embodiment, as shown in FIG. 4B, the incident surface 3a7b is radiated upward from the LED light source 1a7 at an angle of, for example, 45 ° with the optical axis 1a7 ′. The light L3a7e4 that is transmitted and then reflected by the reflecting surface 3a7c and traveling in the direction of the approximate optical axis 1a7 'is reflected by the reflecting surface 3a7e4a (see FIG. 2) of the reflecting type emitting unit 3a7e4, and then the reflecting type emitting unit The light is transmitted through the emission surface 3a7e4b (see FIG. 2) of 3a7e4, and is irradiated as downward light L3a7e4 ′ having an angle of, for example, 72 ° with the horizontal plane.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 4C, the LED light source 1a7 is radiated downward at an angle of, for example, 15 ° with the optical axis 1a7 ′, and enters the incident surface 3a7a2. The transmitted light L3a7f2a is reflected by the reflection surface 3a7f1 of the reflection-type emission part 3a7f, and then transmitted through the emission surface 3a7f2a of the reflection-type emission part 3a7f. 'Become irradiated.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 5A, the LED light source 1a7 is radiated downward at an angle of, for example, 35 ° with the optical axis 1a7 ′, and enters the incident surface 3a7a2. The transmitted light L3a7f2b is reflected by the reflection surface 3a7f1 of the reflection-type emission part 3a7f, and then transmitted through the emission surface 3a7f2b of the reflection-type emission part 3a7f. The downward light L3a7f2b ′ forming an angle of 90 ° with the horizontal plane Will be irradiated.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 5 (B), the LED light source 1a7 is radiated downward at an angle of, for example, 80 ° with the optical axis 1a7 ′, and enters the incident surface 3a7a2. The transmitted light L3a7g is transmitted through the exit surface 3a7g1 of the refractive exit section 3a7g, and is irradiated as downward light L3a7g ′ that forms an angle of, for example, 71 ° with the horizontal plane.

  Therefore, according to the LED illumination device 10 of the first embodiment, an LED light source whose optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). Without being provided, it is possible to irradiate downward light L3a7e1 ′, L3a7e2 ′, L3a7e3 ′, L3a7e3b, L3a7e4 ′, L3a7f2a ′, L3a7f2b ′, and L3a7g ′ (see FIGS. 3 to 5) that form various angles with the horizontal plane. .

  In other words, according to the LED lighting device 10 of the first embodiment, the optical axis is directed downward as in the LED lighting device described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-179664). There is no need to provide a substrate for mounting the LED light source separately from a substrate for mounting the LED light source with the optical axis oriented horizontally, and downward light L3a7e1 ′, L3a7e2 ′ forming various angles with the horizontal plane. , L3a7e3 ′, L3a7e3b, L3a7e4 ′, L3a7f2a ′, L3a7f2b ′, and L3a7g ′ (see FIGS. 3 to 5).

  That is, according to the LED lighting device 10 of the first embodiment, the number of substrates is reduced as compared with the LED lighting device described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-179664), and various angles with the horizontal plane. L3a7e1 ′, L3a7e2 ′, L3a7e3 ′, L3a7e3b, L3a7e4 ′, L3a7f2a ′, L3a7f2b ′, and L3a7g ′ (see FIGS. 3 to 5) (see FIGS. 3 to 5).

  Specifically, in the LED lighting device 10 according to the first embodiment, as shown in FIG. 5B, the LED light source 1a7 forms a large angle of, for example, 65 ° to 90 ° with the optical axis 1a7 ′ of the LED light source 1a7. The light L3a7g emitted downward from the light and transmitted through the incident surface 3a7a2 is refracted by the light exit surface 3a7g1 of the refraction type light emitting portion 3a7g, and the light L3a7g is directed downward with an angle of, for example, 71 ° smaller than 90 °. 'Become irradiated.

  On the other hand, in the LED lighting device 10 of the first embodiment, as shown in FIG. 5 (A), the LED light source 1a7 faces the optical axis 1a7 ′ of the LED light source 1a7 and forms a small angle of 30 ° to 40 °, for example, downward from the LED light source 1a7. The light L3a7f2b having a higher luminous intensity than the light L3a7g (see FIG. 5B), which is radiated to the incident surface 3a7a2, is reflected by the reflective surface 3a7f1 of the reflective light emitting portion 3a7f, and then reflected. The light is transmitted through the emission surface 3a7f2b of the emission part 3a7f and irradiated as downward light L3a7f2b ′ forming 90 ° with the horizontal plane.

  In other words, in the LED lighting device 10 according to the first embodiment, as shown in FIG. 5A, a high angle emitted downward from the LED light source 1a7 at a small angle with the optical axis 1a7 ′ of the LED light source 1a7. Light having a luminous intensity is irradiated as downward light L3a7f2b ′ forming 90 ° with the horizontal plane.

  Therefore, according to the LED illumination device 10 of the first embodiment, light having a low luminous intensity emitted downward from the LED light source 1a7 at a large angle with the optical axis 1a7 ′ of the LED light source 1a7 is 90 ° with respect to the horizontal plane. It is possible to illuminate the area immediately below the LED lighting device 10 more brightly than the case where the light is emitted in the downward direction.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 2, the reflection-type emission part 3a7e3 is disposed between the reflection surface 3a7e1a of the reflection-type emission part 3a7e1 and the reflection surface 3a7e3a of the reflection-type emission part 3a7e3. Outgoing surfaces 3a7e3b are arranged. Furthermore, the exit surface 3a7e2b of the reflective exit portion 3a7e2 is disposed between the reflective surface 3a7e2a of the reflective exit portion 3a7e2 and the reflective surface 3a7e3a of the reflective exit portion 3a7e3.

  Therefore, according to the LED illumination device 10 of the first embodiment, the reflection surface 3a7e1a of the reflection type emission part 3a7e1 and the reflection surface 3a7e3a of the reflection type emission part 3a7e3 are arranged adjacent to each other and are continuously formed. Or when the reflection surface 3a7e2a of the reflection-type emission portion 3a7e2 and the reflection surface 3a7e3a of the reflection-type emission portion 3a7e3 are arranged adjacent to each other and formed continuously, the lens portion of the light guide lens 3a. The thickness dimension 3a7 (the horizontal dimension in FIG. 2) can be reduced.

  That is, according to the LED illumination device 10 of the first embodiment, the upper end portion of the reflection surface 3a7e1a of the reflection type emission portion 3a7e1 and the lower end portion of the reflection surface 3a7e3a of the reflection type emission portion 3a7e3 are matched. The thickness dimension of the lens portion 3a7 of the light guide lens 3a is larger than the case where the lower end portion of the reflection surface 3a7e2a of the reflection type emission portion 3a7e2 and the upper end portion of the reflection surface 3a7e3a of the reflection type emission portion 3a7e3 are aligned. The dimension in the horizontal direction in FIG. 2 can be reduced.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 6, upward light emitted from the LED light source 1a1 at a small angle such as 0 ° to 33 ° with the optical axis 1a1 ′. A convex incident surface 3a1a on which downward light is incident is formed on the lens portion 3a1 of the light guide lens 3a. Further, for example, a planar incident surface 3a1b on which upward light and downward light emitted from the LED light source 1a1 enter a large angle such as 33 ° to 90 ° with the optical axis 1a1 ′ is a light guide lens. It is formed in the lens portion 3a1 of 3a. Furthermore, the light L3a1d2, L3a1d3a, L3a1d4, L3a1d5, L3a1e3a, L3a1e4, L3a1e5 (FIG. 7C, FIG. 8A) which reflects the light from the incident surface 3a1b and travels in the direction of the approximate optical axis 1a1 ′ 8B, FIG. 8C, FIG. 9C, FIG. 10A, FIG. 10B, and FIG. 10C), the reflecting surface 3a1c is the lens of the light guide lens 3a. It is formed in the part 3a1.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 6, a refraction type emitting portion 3a1d1 for emitting light L3a1d1 (see FIG. 7A) from the incident surface 3a1a, and the incident surface Refractive light emitting part 3a1d3 for emitting light L3a1d3 from 3a1a (see FIG. 7B) and light L3a1d3a from reflecting surface 3a1c (see FIG. 7C), and light L3a1d2 from reflecting surface 3a1c (see FIG. 7) 8 (A)), a refraction type emission part 3a1d2 for emitting light, a refraction type emission part 3a1d5 for emitting light L3a1d5 (see FIG. 8B) from the reflection surface 3a1c, and a reflection surface 3a1c. A refractive exit part 3a1d4 for emitting light L3a1d4 (see FIG. 8C) is formed in the lens part 3a1 of the light guide lens 3a.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 6, a reflection type emitting portion 3a1e1 for emitting light L3a1e1 (see FIG. 9A) from the incident surface 3a1a, and the incident surface A reflection type emitting portion 3a1e3 for emitting light L3a1e3 (see FIG. 9B) from 3a1a and light L3a1e3a (see FIG. 9C) from the reflecting surface 3a1c, and light L3a1e2 from the reflecting surface 3a1c (see FIG. 9). 10 (A)), a reflection-type emission part 3a1e2 for emitting light, a reflection-type emission part 3a1e5 for emitting light L3a1e5 (see FIG. 10B) from the reflection surface 3a1c, and a reflection surface 3a1c A reflection type emitting portion 3a1e4 for emitting light L3a1e4 (see FIG. 10C) is formed in the lens portion 3a1 of the light guide lens 3a.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 6, the refractive exit part 3a1d2 is arranged above the refractive exit part 3a1d1. Further, the refraction type emission part 3a1d3 is arranged between the refraction type emission part 3a1d1 and the refraction type emission part 3a1d2. Further, the refractive exit part 3a1d4 is arranged above the refractive exit part 3a1d2. Further, the refraction type emission part 3a1d5 is arranged between the refraction type emission part 3a1d2 and the refraction type emission part 3a1d4.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 6, the reflective emission part 3a1e1 is arranged below the refraction type emission part 3a1d1. Further, the reflection type emission part 3a1e2 is arranged below the reflection type emission part 3a1e1. In addition, the reflective emission part 3a1e3 is arranged between the reflective emission part 3a1e1 and the reflective emission part 3a1e2. Further, the reflection type emission part 3a1e4 is arranged below the reflection type emission part 3a1e2. Further, the reflection type emission part 3a1e5 is arranged between the reflection type emission part 3a1e2 and the reflection type emission part 3a1e4.

  Specifically, in the LED lighting device 10 of the first embodiment, as shown in FIG. 7A, the incident surface is radiated upward from the LED light source 1a1 at an angle of, for example, 15 ° with the optical axis 1a1 ′. The light L3a1d1 transmitted through 3a1a and traveling in the direction of the approximate optical axis 1a1 ′ is refracted by the exit surface 3a1d1a (see FIG. 6) of the refractive exit part 3a1d1 and is downwardly directed at an angle of, for example, 37 ° with the horizontal plane. Irradiated as L3a1d1 ′.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 7B, the incident surface 3a1a is radiated upward from the LED light source 1a1 at an angle of, for example, 30 ° with the optical axis 1a1 ′. The light L3a1d3 that is transmitted and travels approximately in the direction of the optical axis 1a1 ′ is refracted by the exit surface 3a1d3a (see FIG. 6) of the refracting exit part 3a1d3, and the downward light L3a1d3 ′ that forms an angle of, for example, 30 ° with the horizontal plane. Will be irradiated.

  Furthermore, in the LED illumination device 10 of the first embodiment, as shown in FIG. 7C, the incident surface 3a1b is radiated upward from the LED light source 1a1 at an angle of, for example, 80 ° with the optical axis 1a1 ′. The light L3a1d3a that has been transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is refracted by the exit surface 3a1d3a (see FIG. 6) of the refractive exit portion 3a1d3 and is, for example, 28 ° with the horizontal plane. It is irradiated as downward light L3a1d3b having an angle of.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 8A, the incident surface 3a1b is radiated upward from the LED light source 1a1 at an angle of, for example, 65 ° with the optical axis 1a1 ′. The light L3a1d2 that is transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is refracted by the exit surface 3a1d2a (see FIG. 6) of the refractive exit section 3a1d2, and is 23 ° with the horizontal plane, for example. Is irradiated as downward light L3a1d2 ′ having an angle of

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 8B, the incident surface 3a1b is radiated upward from the LED light source 1a1 at an angle of, for example, 45 ° with the optical axis 1a1 ′. The light L3a1d5 that has been transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is refracted by the exit surface 3a1d5a (see FIG. 6) of the refractive exit section 3a1d5, and is 16 ° to the horizontal plane, for example. Is irradiated as downward light L3a1d5 ′ having an angle of

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 8C, the incident surface 3a1b is radiated upward from the LED light source 1a1 at an angle of, for example, 35 ° with the optical axis 1a1 ′. The light L3a1d4 that is transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is refracted by the exit surface 3a1d4a (see FIG. 6) of the refractive exit part 3a1d4 and is 5 ° with the horizontal plane, for example It is irradiated as downward light L3a1d4 ′ having an angle of

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 9A, the light incident on the light incident surface 3a1a is emitted downward from the LED light source 1a1 at an angle of, for example, 15 ° with the optical axis 1a1 ′. The light L3a1e1 that is transmitted and travels approximately in the direction of the optical axis 1a1 ′ is reflected by the reflection surface 3a1e1a of the reflection-type emission part 3a1e1, and then is transmitted through the emission surface 3a1e1b of the reflection-type emission part 3a1e1. Irradiated as downward light L3a1e1 ′ having an angle of °.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 9B, the incident surface 3a1a is radiated downward from the LED light source 1a1 at an angle of, for example, 30 ° with the optical axis 1a1 ′. The light L3a1e3 that has been transmitted and travels in the direction of the optical axis 1a1 ′ is reflected by the reflection surface 3a1e3a of the reflection-type emission part 3a1e3, and then transmitted through the emission surface 3a1e3b of the reflection-type emission part 3a1e3. Irradiated as downward light L3a1e3 ′ having an angle of °.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 9C, the incident surface 3a1b is radiated downward from the LED light source 1a1 at an angle of, for example, 85 ° with the optical axis 1a1 ′. The light L3a1e3a that is transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is reflected by the reflecting surface 3a1e3a of the reflecting type emitting unit 3a1e3, and then the emitting surface 3a1e3b of the reflecting type emitting unit 3a1e3 , And is irradiated as downward light L3a1e3b that forms an angle of, for example, 49 ° with the horizontal plane.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 10A, the incident surface 3a1b is radiated downward from the LED light source 1a1 at an angle of, for example, 65 ° with the optical axis 1a1 ′. The light L3a1e2 that is transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is reflected by the reflecting surface 3a1e2a of the reflecting type emitting unit 3a1e2, and then the emitting surface 3a1e2b of the reflecting type emitting unit 3a1e2 , And is irradiated as downward light L3a1e2 ′ that forms an angle of, for example, 53 ° with the horizontal plane.

  Further, in the LED illumination device 10 of the first embodiment, as shown in FIG. 10B, the light incident on the light incident surface 3a1b is emitted downward from the LED light source 1a1 at an angle of, for example, 45 ° with the optical axis 1a1 ′. The light L3a1e5 that is transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is reflected by the reflecting surface 3a1e5a of the reflecting type emitting portion 3a1e5, and then the emitting surface 3a1e5b of the reflecting type emitting portion 3a1e5 , And is irradiated as downward light L3a1e5 ′ that forms an angle of, for example, 57 ° with the horizontal plane.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 10C, the incident surface 3a1b is radiated downward from the LED light source 1a1 at an angle of, for example, 35 ° with the optical axis 1a1 ′. The light L3a1e4 that is transmitted and then reflected by the reflecting surface 3a1c and traveling in the direction of the approximate optical axis 1a1 ′ is reflected by the reflecting surface 3a1e4a of the reflecting type emitting unit 3a1e4, and then the emitting surface 3a1e4b of the reflecting type emitting unit 3a1e4 , And is irradiated as downward light L3a1e4 ′ that forms an angle of, for example, 60 ° with the horizontal plane.

  Furthermore, in the LED lighting device 10 of the first embodiment, the LED light source 1a2 is set to the same specifications as the LED light source 1a1. Further, the lens portion 3a2 of the light guide lens 3a is formed in the same shape as the lens portion 3a1.

  In other words, in the LED lighting device 10 of the first embodiment, as shown in FIG. 7A, an angle of, for example, 37 ° with the horizontal plane is formed from the exit surface 3a1d1a (see FIG. 6) of the refractive exit portion 3a1d1. The downward light L3a1d1 ′ formed is irradiated. Furthermore, as shown in FIG. 8A, downward light L3a1d2 ′ having an angle of, for example, 23 ° smaller than 37 ° is irradiated from the exit surface 3a1d2a (see FIG. 6) of the refractive exit portion 3a1d2. The

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 9 (A), from the emission surface 3a1e1b of the reflective emission part 3a1e1, an angle of, for example, 43 °, which is greater than 37 ° and 23 °, for example, 43 ° The downward light L3a1e1 ′ forming Furthermore, as shown in FIG. 10 (A), downward light that forms an angle of, for example, 53 °, which is greater than 37 ° and 23 °, and greater than 43 °, from the exit surface 3a1e2b of the reflective exit portion 3a1e2. L3a1e2 ′ is irradiated.

  Therefore, according to the LED illumination device 10 of the first embodiment, an LED light source whose optical axis is directed downward as in the LED illumination device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664). Downward light L3a1d1 ′, L3a1d2 ′, L3a1e1 ′, and L3a1e2 ′ forming various angles with the horizontal plane without being provided (see FIGS. 7A, 8A, 9A, and 10A) ) Can be irradiated.

  That is, according to the LED lighting device 10 of the first embodiment, as in the LED lighting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-179664), the LED light source whose optical axis is directed downward. The light source L3a1d1 ′, L3a1d2 ′, and L3a1e1 having various angles with the horizontal plane need not be provided separately from the substrate for mounting the LED light source with the optical axis oriented horizontally. ', L3a1e2' (see FIGS. 7A, 8A, 9A, and 10A) can be irradiated.

  That is, according to the LED lighting device 10 of the first embodiment, the number of substrates is reduced as compared with the LED lighting device described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-179664), and various angles with the horizontal plane. L3a1d1 ′, L3a1d2 ′, L3a1e1 ′, and L3a1e2 ′ (see FIGS. 7A, 8A, 9A, and 10A) can be emitted.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 7B, the light L3a1d3 from the incident surface 3a1a is refracted by the exit surface 3a1d3a (see FIG. 6) of the refractive exit portion 3a1d3. Then, it is irradiated as downward light L3a1d3 ′ that forms an angle of, for example, 30 ° smaller than 37 ° and larger than 23 ° with respect to the horizontal plane.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 7C, the light L3a1d3a from the reflecting surface 3a1c is refracted by the exit surface 3a1d3a (see FIG. 6) of the refractive exit portion 3a1d3. Then, it is irradiated as downward light L3a1d3b that forms an angle of, for example, 28 °, which is smaller than 37 ° and larger than 23 ° with respect to the horizontal plane.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 9B, the light L3a1e3 from the incident surface 3a1a is reflected by the reflective surface 3a1e3a of the reflective emitting portion 3a1e3, and then the reflective type The light is transmitted through the emission surface 3a1e3b of the emission unit 3a1e3, and is irradiated as downward light L3a1e3 ′ that forms an angle of, for example, 50 °, which is greater than 43 ° and less than 53 ° with respect to the horizontal plane.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 9C, the light L3a1e3a from the reflective surface 3a1c is reflected by the reflective surface 3a1e3a of the reflective emitting portion 3a1e3, and then the reflective type The light is transmitted through the emission surface 3a1e3b of the emission unit 3a1e3, and is irradiated as downward light L3a1e3b having an angle of, for example, 49 °, which is greater than 43 ° and less than 53 ° with respect to the horizontal plane.

  Therefore, according to the LED lighting device 10 of the first embodiment, the downward light L3a1d3 ′ that forms an angle of, for example, 30 ° smaller than 37 ° and greater than 23 ° with respect to the horizontal plane, and the downward light that forms an angle of, for example, 28 ° with the horizontal plane. More than the case where the light L3a1d3b is not irradiated and the downward light L3a1e3 ′ having an angle of, for example, 50 ° greater than 43 ° and less than 53 ° with the horizontal plane and the downward light L3a1e3b having an angle of, for example, 49 ° with the horizontal plane is not irradiated. Irradiance unevenness of the light distribution pattern formed by the irradiation lights L3a1d1 ′, L3a1d2 ′, L3a1d3 ′, L3a1d3b, L3a1e1 ′, L3a1e2 ′, L3a1e3 ′, and L3a1e3b from the LED illumination device 10 can be reduced.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 6, the reflection type emitting portion 3a1e1 is disposed between the reflecting surface 3a1e1a of the reflecting type emitting portion 3a1e1 and the reflecting surface 3a1e3a of the reflecting type emitting portion 3a1e3. An emission surface 3a1e1b is arranged. Therefore, according to the LED illumination device 10 of the first embodiment, the reflection surface 3a1e1a of the reflection-type emission part 3a1e1 and the reflection surface 3a1e3a of the reflection-type emission part 3a1e3 are arranged adjacent to each other and formed continuously. That is, in other words, the lower end portion of the reflection surface 3a1e1a of the reflection-type emission portion 3a1e1 and the upper end portion of the reflection surface 3a1e3a of the reflection-type emission portion 3a1e3 are aligned with each other. The thickness dimension (the horizontal dimension in FIG. 6) can be reduced.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 7C, the light L3a1d4 from the reflecting surface 3a1c is refracted by the emitting surface 3a1d4a (see FIG. 6) of the refractive emitting unit 3a1d4. Then, the light is irradiated as downward light L3a1d4 ′ having an angle of, for example, 5 ° smaller than 23 ° with respect to the horizontal plane.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 10C, the light L3a1e4 from the reflection surface 3a1c is reflected by the reflection surface 3a1e4a of the reflection type emitting portion 3a1e4, and then the reflection type. The light is transmitted through the emission surface 3a1e4b of the emission part 3a1e4, and irradiated as downward light L3a1e4 ′ having an angle of, for example, 60 ° larger than 53 ° with the horizontal plane.

  Therefore, according to the LED lighting device 10 of the first embodiment, the downward light L3a1d4 ′ that forms an angle of, for example, 5 ° smaller than 23 ° with the horizontal plane is not irradiated, and the angle of, for example, 60 ° that is greater than 53 ° with the horizontal plane. L3a1d1 ′, L3a1d2 ′, L3a1d3 ′, L3a1d3b, L3a1d4 ′, L3a1e1 ′, L3a1e2 ′, L3a1e3 ′, L3a1e3 ′, L3a1e3 ′, L3a1e3 ′, and L3a1e3 ′ (Wide angle) can be irradiated.

  Further, in the LED lighting device 10 of the first embodiment, as shown in FIG. 8B, the light L3a1d5 from the reflection surface 3a1c is refracted by the emission surface 3a1d5a (see FIG. 6) of the refractive emission unit 3a1d5. Then, the light beam is irradiated as downward light L3a1d5 ′ having an angle of, for example, 16 ° smaller than 23 ° and larger than 5 °.

  Furthermore, in the LED lighting device 10 of the first embodiment, as shown in FIG. 10B, the light L3a1e5 from the reflective surface 3a1c is reflected by the reflective surface 3a1e5a of the reflective light emitting portion 3a1e5, and then the reflective type The light is transmitted through the emission surface 3a1e5b of the emission part 3a1e5, and is irradiated as downward light L3a1e5 ′ that forms an angle of, for example, 57 °, which is greater than 53 ° and smaller than 60 ° with respect to the horizontal plane.

  Therefore, according to the LED illumination device 10 of the first embodiment, the downward light L3a1d5 ′ that forms an angle of, for example, 16 °, which is smaller than 23 ° and larger than 5 ° with respect to the horizontal plane is not irradiated, and is larger than 53 ° with respect to the horizontal plane 60 The light L3a1d1 ′, L3a1d2 ′, L3a1d3 ′, L3a1d3b, L3a1d4 ′, L3a1d5 ′, and L3a1e1 ′ from the LED illuminating device 10 is smaller than the case where the downward light L3a1e5 ′ having an angle of 57 °, for example, is not irradiated. Illuminance unevenness of the light distribution pattern formed by L3a1e2 ′, L3a1e3 ′, L3a1e3b, L3a1e4 ′, and L3a1e5 ′ can be reduced.

  Hereinafter, a second embodiment of the LED lighting device of the present invention will be described. FIG. 11 is a perspective view showing a main part of a street lamp 100 to which the LED lighting device 10 of the second embodiment is applied. Specifically, FIG. 11A is a perspective view showing a main part of a street lamp 100 to which the LED lighting device 10 of the second embodiment is applied, and FIG. It is the figure which showed the vertical cross section of LED lighting apparatus 10 of 2nd Embodiment containing central axis 6 '. FIG. 12 is a view showing a vertical cross section of the LED illumination device 10 of the second embodiment including the central axis 6 ′ of the regular quadrangular prism-shaped support portion 6 perpendicular to the vertical cross section shown in FIG.

  In the LED lighting device 10 of the second embodiment, as shown in FIGS. 11B and 12, a regular square having a square tip surface 6z and four rectangular side surfaces 6a, 6b, 6c, 6d. A columnar support 6 is provided. Further, the four plate-like substrates 2a, 2b, 2c, and 2d are four pieces of the support portions 6 having a regular quadrangular prism shape so as to be perpendicular to the horizontal plane and have a 90 ° rotationally symmetric relationship. Are arranged on the rectangular side surfaces 6a, 6b, 6c and 6d.

  Furthermore, in the LED lighting device 10 of the second embodiment, as shown in FIG. 11B, the optical axes 1a1 ′, 1a2 ′, 1a3 ′, 1a4 of the LED light sources 1a1, 1a2, 1a3, 1a4, 1a5, 1a7. The LED light sources 1a1, 1a2, 1a3, 1a4, 1a5 and 1a7 are mounted on the substrate 2a so that ', 1a5' and 1a7 'are perpendicular to the substrate 2a.

  Further, in the LED lighting device 10 of the second embodiment, as shown in FIGS. 11B and 12, the LED light sources 1a1, 1a2, 1a3, 1a4, 1a5, 1a7 mounted on the substrate 2a are rotated by 90 °. LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, 1b7, 1c1, 1c2, 1c3, 1c4, 1c5, 1c7, 1d1, 1d2, 1d3, 1d4, 1d5, 1d7 are formed on the substrates 2b, 2c, 2d. Has been implemented. Specifically, in the LED lighting device 10 of the second embodiment, as shown in FIG. 11B, the optical axes 1c1 ′, 1c2 ′, 1c3 ′ of the LED light sources 1c1, 1c2, 1c3, 1c4, 1c5, 1c7 , 1c4 ′, 1c5 ′, 1c7 ′ are mounted on the substrate 2c such that the LED light sources 1c1, 1c2, 1c3, 1c4, 1c5, 1c7 are perpendicular to the substrate 2c.

  Further, in the LED lighting device 10 of the second embodiment, as shown in FIG. 12, the optical axes 1b1 ′, 1b2 ′, 1b3 ′, 1b4 ′, 1b5 of the LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, 1b7. LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, and 1b7 are mounted on the substrate 2b so that ', 1b7' is perpendicular to the substrate 2b. Further, the LED light sources 1d1, 1d2, 1d3, 1d4, 1d5, and 1d7 have the optical axes 1d1 ′, 1d2 ′, 1d3 ′, 1d4 ′, 1d5 ′, and 1d7 ′ perpendicular to the substrate 2d. 1d2, 1d3, 1d4, 1d5, and 1d7 are mounted on the substrate 2d.

  Furthermore, in the LED lighting device 10 of the second embodiment, as shown in FIG. 11B and FIG. 12, each LED light source 1a1,..., 1a7, 1b1,..., 1b7, 1c1,. ..., a base 7 for supplying current to 1d7 is provided.

  In the LED illumination device 10 of the second embodiment, as shown in FIG. 11B, the light from the LED light source 1a1 and the light from the LED light source 1a2 are distributed. From the lens unit 3a2 for controlling light, the lens unit 3a3 for controlling light distribution from the LED light source 1a3, the lens unit 3a4 for controlling light distribution from the LED light source 1a4, and the LED light source 1a5 LED light sources 1a1, 1a2, 1a3, 1a4, 1a5 by a light guide lens 3a having a lens portion 3a5 for controlling the light distribution of the light and a lens portion 3a7 for controlling the light distribution from the LED light source 1a7. , 1a7 is covered. Further, a lens portion 3c1 for controlling the light distribution from the LED light source 1c1, a lens portion 3c2 for controlling the light distribution from the LED light source 1c2, and a light distribution control for the light from the LED light source 1c3. The lens unit 3c3, the lens unit 3c4 for controlling light distribution from the LED light source 1c4, the lens unit 3c5 for controlling light distribution from the LED light source 1c5, and the light from the LED light source 1c7. LED light sources 1c1, 1c2, 1c3, 1c4, 1c5, 1c7 are covered by a light guide lens 3c having a lens portion 3c7 for light control.

  Further, in the LED illumination device 10 of the second embodiment, as shown in FIG. 12, the light distribution control of the light from the LED light source 1b2 and the lens unit 3b1 for controlling the light distribution of the light from the LED light source 1b1 is performed. The lens unit 3b2, the lens unit 3b3 for controlling the light distribution from the LED light source 1b3, the lens unit 3b4 for controlling the light distribution from the LED light source 1b4, and the light from the LED light source 1b5. LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, 1b7 are provided by a light guide lens 3b having a lens unit 3b5 for controlling light distribution and a lens unit 3b7 for controlling light distribution from the LED light source 1b7. Covered. In addition, a lens unit 3d1 for controlling the light distribution from the LED light source 1d1, a lens unit 3d2 for controlling the light distribution from the LED light source 1d2, and a light distribution control for the light from the LED light source 1d3. The lens unit 3d3, the lens unit 3d4 for controlling the light distribution from the LED light source 1d4, the lens unit 3d5 for controlling the light distribution from the LED light source 1d5, and the light from the LED light source 1d7. LED light sources 1d1, 1d2, 1d3, 1d4, 1d5, and 1d7 are covered with a light guide lens 3d having a lens portion 3d7 for light control.

  Specifically, in the LED lighting device 10 of the second embodiment, as shown in FIGS. 11B and 12, the light guide lenses 3a, 3b, 3c, and 3d have a 90 ° rotationally symmetric relationship with each other. So that it is arranged.

  Specifically, in the application example of the street light 100 shown in FIG. 11A, in order to irradiate the road surface (ground) (not shown), the base 7 of the LED lighting device 10 of the second embodiment is It is connected to a socket 100b provided on a support column 100a that extends upward from the road surface (ground) and has a tip curved in a U shape. Specifically, as shown in FIGS. 11B and 12, the plate-like substrates 2a, 2b, 2c, and 2d are perpendicular to the horizontal plane (not shown). The base 7 of the LED lighting device 10 is connected to the socket 100b. In other words, the LED lighting device 10 of the second embodiment is configured to be compatible with, for example, a mercury lamp having a base, for example, a light bulb having a light emitting unit such as a filament and a base. . In addition, in the application example of the street lamp 100 shown in FIG. 11A, a tray portion 100c is provided on the support column 100a of the street lamp 100, and the second (outer lens) 100d attached to the tray portion 100c is used for the second. The LED lighting device 10 of the embodiment is covered.

  In the LED lighting device 10 of the second embodiment, the lens portions 3a1, 3a2, 3a3, 3a4, 3a5, and 3a7 of the light guide lens 3a have the cross-sectional shape shown in FIG. It is formed in a shape (columnar shape) obtained by extruding in the front-rear direction. Further, the lens portions 3b1, 3b2, 3b3, 3b4, 3b5, 3b7 of the light guide lens 3b are formed in a shape (columnar shape) obtained by extruding the cross-sectional shape shown in FIG. 12 in the front-rear direction of FIG. Has been. Further, the lens portions 3c1, 3c2, 3c3, 3c4, 3c5, and 3c7 of the light guide lens 3c are obtained by pushing out the cross-sectional shape shown in FIG. 11B in the front side-back side direction of FIG. 11B. It is formed in a shape (columnar shape). Further, the lens portions 3d1, 3d2, 3d3, 3d4, 3d5, and 3d7 of the light guide lens 3d are formed in a shape (columnar shape) obtained by extruding the cross-sectional shape shown in FIG. 12 in the front-rear direction in FIG. Has been.

  Specifically, the lens portions 3a1, 3a2, 3a3, 3a4, 3a5 (see FIG. 11 (B)) of the light guide lens 3a (see FIG. 11 (B)) of the LED lighting device 10 of the second embodiment are It is formed in the same cross-sectional shape as the lens part 3a1 (refer FIG. 6) of the light guide lens 3a (refer FIG. 1) of the LED illuminating device 10 of 1 embodiment. Furthermore, the lens portion 3a7 (see FIG. 11B) of the light guide lens 3a (see FIG. 11B) of the LED lighting device 10 of the second embodiment is the same as that of the LED lighting device 10 of the first embodiment. It is formed in the same cross-sectional shape as the lens portion 3a7 (see FIG. 2) of the light guide lens 3a (see FIG. 1). Further, in the LED illumination device 10 of the second embodiment, the light guide lenses 3a, 3b, 3c, 3d are arranged so as to have a 90 ° rotationally symmetric relationship with each other, and therefore the LED illumination of the second embodiment. The light guide lenses 3b, 3c, 3d (see FIG. 11B and FIG. 12) of the device 10 have the same shape as the light guide lens 3a (see FIG. 11B) of the LED illumination device 10 of the second embodiment. It has become.

  In the LED illumination device 10 of the second embodiment, as shown in FIG. 11B and FIG. 12, LED light sources 1a1,..., 1a7, 1b1,..., 1b7, 1c1,. Since light guide lenses 3a, 3b, 3c, and 3d for controlling light distribution from the light source are provided, a light guide lens for controlling light distribution from the LED light source is not provided. 2 (Japanese Patent Laid-Open No. 2010-182796), the light emitted from the LED light sources 1a1, ..., 1a7, 1b1, ..., 1b7, 1c1, ..., 1c7, 1d1, ..., 1d7 Among these, the ratio of the light irradiated to the road surface (ground) can be improved.

  Specifically, the inventor installs the LED lighting device 10 of the second embodiment at a height of 5 m, and forms a cylinder with a radius of 25 m centering on the central axis 6 ′ of the support portion 6 having a regular quadrangular prism shape. Assuming that the LED light sources 1a1, ..., 1a7, 1b1, ..., 1b7, 1c1, ..., 1c7, 1d1, ..., 1d7 irradiate the lower surface of the cylinder (that is, the road surface (ground)), the side surface and the upper surface of the cylinder. The percentage of light that was calculated. As a result, of the light emitted from the LED light sources 1a1,..., 1a7, 1b1,..., 1b7, 1c1, ..., 1c7, 1d1, ..., 1d7, the lower surface of the cylinder (that is, the road surface (ground)) is irradiated. The ratio of light to 60%, the ratio of light irradiated to the side and top surfaces of the cylinder to 15.4%, and the ratio of light absorbed by the regular square columnar support 6 to 23.8% Thus, the ratio of light absorbed by the globe (outer lens) 100d is 0.1%, and the ratio of light absorbed by the light guide lenses 3a, 3b, 3c, 3d is 0.7%.

  In the application example shown in FIG. 11 (A), the LED lighting device 10 of the second embodiment is applied to the street light 100, but in other application examples, for example, an illumination light installed on the ceiling of a gymnasium or the like. The LED lighting device 10 of the second embodiment can be applied to such indoor lighting.

  In the LED illumination device 10 according to the second embodiment, the regular quadrangular columnar support 6 is used and the four substrates 4a, 4b, 4c, and 4d are provided. The LED illumination device according to the second embodiment. In the tenth modification, instead, positive n (n is an integer of 3 or more and an integer other than 4) prismatic support portions 6 are used, and have a (360 / n) ° rotationally symmetrical relationship with each other. It is also possible to arrange n substrates.

  Hereinafter, a third embodiment of the LED lighting device of the present invention will be described. FIG. 13 is a perspective view showing a main part of a street lamp 100 to which the LED lighting device 10 of the third embodiment is applied. Specifically, FIG. 13 (A) is a perspective view showing a main part of a street lamp 100 to which the LED lighting device 10 of the third embodiment is applied, and FIG. 13 (B) is a diagram of a support portion 6 having a regular quadrangular prism shape. It is the figure which showed the vertical cross section of LED lighting apparatus 10 of 3rd Embodiment containing center axis line 6 '. FIG. 14 is a view showing a vertical cross section of the LED lighting device 10 of the third embodiment including the central axis 6 ′ of the support portion 6 having a regular quadrangular prism shape perpendicular to the vertical cross section shown in FIG.

  In the LED lighting device 10 of the third embodiment, as shown in FIGS. 13B and 14, a regular square having a square tip surface 6 z and four rectangular side surfaces 6 a, 6 b, 6 c, 6 d. A columnar support 6 is provided. Further, the four plate-like substrates 2a, 2b, 2c, and 2d are four pieces of the support portions 6 having a regular quadrangular prism shape so as to be perpendicular to the horizontal plane and have a 90 ° rotationally symmetric relationship. Are arranged on the rectangular side surfaces 6a, 6b, 6c and 6d.

  Furthermore, in the LED lighting device 10 of the third embodiment, as shown in FIG. 13B, the optical axes 1a1 ′, 1a2 ′, 1a3 ′, 1a4 of the LED light sources 1a1, 1a2, 1a3, 1a4, 1a5, 1a7. The LED light sources 1a1, 1a2, 1a3, 1a4, 1a5 and 1a7 are mounted on the substrate 2a so that ', 1a5' and 1a7 'are perpendicular to the substrate 2a.

  Further, in the LED lighting device 10 of the third embodiment, as shown in FIGS. 13B and 14, the LED light sources 1a1, 1a2, 1a3, 1a4, 1a5, and 1a7 mounted on the substrate 2a are rotated by 90 °. LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, 1b7, 1c1, 1c2, 1c3, 1c4, 1c5, 1c7, 1d1, 1d2, 1d3, 1d4, 1d5, 1d7 are formed on the substrates 2b, 2c, 2d. Has been implemented. Specifically, in the LED lighting device 10 of the third embodiment, as shown in FIG. 13B, the optical axes 1c1 ′, 1c2 ′, 1c3 ′ of the LED light sources 1c1, 1c2, 1c3, 1c4, 1c5, 1c7 , 1c4 ′, 1c5 ′, 1c7 ′ are mounted on the substrate 2c such that the LED light sources 1c1, 1c2, 1c3, 1c4, 1c5, 1c7 are perpendicular to the substrate 2c.

  Further, in the LED lighting device 10 of the third embodiment, as shown in FIG. 14, the optical axes 1b1 ′, 1b2 ′, 1b3 ′, 1b4 ′, 1b5 of the LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, 1b7. LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, and 1b7 are mounted on the substrate 2b so that ', 1b7' is perpendicular to the substrate 2b. Further, the LED light sources 1d1, 1d2, 1d3, 1d4, 1d5, and 1d7 have the optical axes 1d1 ′, 1d2 ′, 1d3 ′, 1d4 ′, 1d5 ′, and 1d7 ′ perpendicular to the substrate 2d. 1d2, 1d3, 1d4, 1d5, and 1d7 are mounted on the substrate 2d.

  Furthermore, in the LED lighting device 10 of the third embodiment, as shown in FIG. 13B and FIG. 14, each LED light source 1a1,..., 1a7, 1b1,..., 1b7, 1c1,. ..., a base 7 for supplying current to 1d7 is provided.

  Moreover, in the LED lighting apparatus 10 of 4th Embodiment, as shown to FIG. 15 (B), it is the same shape as the light guide lens 3a (refer FIG. 13 (B)) of the LED lighting apparatus 10 of 3rd Embodiment. The light guide lens 3a is used. Furthermore, the light guide lenses 3b, 3c, 3d (see FIG. 15B and FIG. 16) of the LED illumination device 10 of the fourth embodiment are replaced with the light guide lens 3a (see FIG. 15B) of the LED illumination device 10 of the fourth embodiment. (See FIG. 15B).

  Further, in the LED lighting device 10 of the third embodiment, as shown in FIG. 13B, the light from the LED light source 1a1 and the light from the LED light source 1a2 are distributed. From the lens unit 3a2 for controlling light, the lens unit 3a3 for controlling light distribution from the LED light source 1a3, the lens unit 3a4 for controlling light distribution from the LED light source 1a4, and the LED light source 1a5 LED light sources 1a1, 1a2, 1a3, 1a4, 1a5 by a light guide lens 3a having a lens portion 3a5 for controlling the light distribution of the light and a lens portion 3a7 for controlling the light distribution from the LED light source 1a7. , 1a7 is covered. Further, a lens portion 3c1 for controlling the light distribution from the LED light source 1c1, a lens portion 3c2 for controlling the light distribution from the LED light source 1c2, and a light distribution control for the light from the LED light source 1c3. The lens unit 3c3, the lens unit 3c4 for controlling light distribution from the LED light source 1c4, the lens unit 3c5 for controlling light distribution from the LED light source 1c5, and the light from the LED light source 1c7. LED light sources 1c1, 1c2, 1c3, 1c4, 1c5, 1c7 are covered by a light guide lens 3c having a lens portion 3c7 for light control.

  Furthermore, in the LED lighting device 10 of the third embodiment, as shown in FIG. 14, the light distribution control of the light from the LED light source 1b2 and the lens portion 3b1 for controlling the light distribution of the light from the LED light source 1b1 is performed. The lens unit 3b2, the lens unit 3b3 for controlling the light distribution from the LED light source 1b3, the lens unit 3b4 for controlling the light distribution from the LED light source 1b4, and the light from the LED light source 1b5. LED light sources 1b1, 1b2, 1b3, 1b4, 1b5, 1b7 are provided by a light guide lens 3b having a lens unit 3b5 for controlling light distribution and a lens unit 3b7 for controlling light distribution from the LED light source 1b7. Covered. In addition, a lens unit 3d1 for controlling the light distribution from the LED light source 1d1, a lens unit 3d2 for controlling the light distribution from the LED light source 1d2, and a light distribution control for the light from the LED light source 1d3. The lens unit 3d3, the lens unit 3d4 for controlling the light distribution from the LED light source 1d4, the lens unit 3d5 for controlling the light distribution from the LED light source 1d5, and the light from the LED light source 1d7. LED light sources 1d1, 1d2, 1d3, 1d4, 1d5, and 1d7 are covered with a light guide lens 3d having a lens portion 3d7 for light control.

  Specifically, in the LED lighting device 10 of the third embodiment, as shown in FIGS. 13B and 14, the light guide lenses 3 a, 3 b, 3 c, and 3 d have a 90 ° rotationally symmetric relationship with each other. So that it is arranged.

  Specifically, in the application example of the street lamp 100 shown in FIG. 13A, in order to irradiate the road surface (ground) (not shown), the base 7 of the LED lighting device 10 of the third embodiment is It is connected to a socket 100b provided on a column 100a extending upward from the road surface (ground). Specifically, as shown in FIGS. 13B and 14, the plate-like substrates 2 a, 2 b, 2 c, and 2 d of the third embodiment are perpendicular to a horizontal plane (not shown). The base 7 of the LED lighting device 10 is connected to the socket 100b. In other words, the LED lighting device 10 of the third embodiment is configured to be compatible with, for example, a mercury lamp having a base, for example, a light bulb having a light emitting unit such as a filament and a base. . In addition, in the application example of the street light 100 shown in FIG. 13A, the plate portion 100c is provided on the support column 100a of the street light 100, and the LED of the third embodiment is provided by the globe 100d attached to the plate portion 100c. The lighting device 10 is covered.

  Further, in the LED lighting device 10 of the third embodiment, the lens portions 3a1, 3a2, 3a3, 3a4, 3a5, and 3a7 of the light guide lens 3a have the cross-sectional shape shown in FIG. It is formed in a shape (columnar shape) obtained by extruding in the front-rear direction. Further, the lens portions 3b1, 3b2, 3b3, 3b4, 3b5, 3b7 of the light guide lens 3b are formed in a shape (columnar shape) obtained by extruding the cross-sectional shape shown in FIG. 14 toward the front-back side in FIG. Has been. Further, the lens portions 3c1, 3c2, 3c3, 3c4, 3c5, 3c7 of the light guide lens 3c are obtained by pushing out the cross-sectional shape shown in FIG. 13B in the front-rear side direction of FIG. 13B. It is formed in a shape (columnar shape). Further, the lens portions 3d1, 3d2, 3d3, 3d4, 3d5, and 3d7 of the light guide lens 3d are formed in a shape (columnar shape) obtained by extruding the cross-sectional shape shown in FIG. 14 in the front-rear direction in FIG. Has been.

  Specifically, the lens portions 3a1, 3a2, 3a3, 3a4, 3a5 (see FIG. 13 (B)) of the light guide lens 3a (see FIG. 13 (B)) of the LED lighting device 10 of the third embodiment are It is formed in the same cross-sectional shape as the lens part 3a1 (refer FIG. 6) of the light guide lens 3a (refer FIG. 1) of the LED illuminating device 10 of 1 embodiment. Furthermore, the lens portion 3a7 (see FIG. 13B) of the light guide lens 3a (see FIG. 13B) of the LED lighting device 10 of the third embodiment is the same as that of the LED lighting device 10 of the first embodiment. It is formed in the same cross-sectional shape as the lens portion 3a7 (see FIG. 2) of the light guide lens 3a (see FIG. 1). Further, in the LED illumination device 10 of the third embodiment, the light guide lenses 3a, 3b, 3c, 3d are arranged so as to have a 90-degree rotational symmetry with each other, and therefore the LED illumination of the third embodiment. The light guide lenses 3b, 3c, 3d (see FIG. 13B and FIG. 14) of the device 10 have the same shape as the light guide lens 3a (see FIG. 13B) of the LED illumination device 10 of the third embodiment. It has become.

  In the LED lighting device 10 of the third embodiment, as shown in FIG. 13B and FIG. 14, LED light sources 1a1,..., 1a7, 1b1,..., 1b7, 1c1,. Since light guide lenses 3a, 3b, 3c, and 3d for controlling light distribution from the light source are provided, a light guide lens for controlling light distribution from the LED light source is not provided. 2 (Japanese Patent Laid-Open No. 2010-182796), the light emitted from the LED light sources 1a1, ..., 1a7, 1b1, ..., 1b7, 1c1, ..., 1c7, 1d1, ..., 1d7 Among these, the ratio of the light irradiated to the road surface (ground) can be improved.

  Specifically, the inventor installs the LED illumination device 10 of the third embodiment at a height of 5 m, and forms a cylinder with a radius of 25 m centered on the central axis 6 ′ of the support portion 6 having a regular quadrangular prism shape. Assuming that the LED light sources 1a1, ..., 1a7, 1b1, ..., 1b7, 1c1, ..., 1c7, 1d1, ..., 1d7 irradiate the lower surface of the cylinder (that is, the road surface (ground)), the side surface and the upper surface of the cylinder. The percentage of light that was calculated. As a result, of the light emitted from the LED light sources 1a1,..., 1a7, 1b1,..., 1b7, 1c1, ..., 1c7, 1d1, ..., 1d7, the lower surface of the cylinder (that is, the road surface (ground)) is irradiated. The ratio of the light to be absorbed is 55.1%, the ratio of the light irradiated to the side surface and the upper surface of the cylinder is 15.4%, and the ratio of the light absorbed by the support portion 6 having a regular quadrangular prism shape is 26.9. %, The ratio of light absorbed by the dish portion 100c is 1.7%, the ratio of light absorbed by the globe (outer lens) 100d is 0.2%, and the light guide lenses 3a, 3b, The proportion of light absorbed by 3c and 3d was 0.7%.

  In the LED illumination device 10 according to the third embodiment, the regular quadrangular columnar support 6 is used and four substrates 4a, 4b, 4c, and 4d are provided. The LED illumination device according to the third embodiment. In the tenth modification, instead, positive n (n is an integer of 3 or more and an integer other than 4) prismatic support portions 6 are used, and have a (360 / n) ° rotationally symmetrical relationship with each other. It is also possible to arrange n substrates.

  In the fourth embodiment, the above-described first to third embodiments, modified examples, and examples can be appropriately combined.

  The LED lighting device of the present invention is applicable to, for example, an LED lighting device such as a street lamp, for example, indoor lighting such as a gymnasium.

1a1, 1a2, 1a7 LED light sources 1a1 ′, 1a2 ′, 1a7 ′ Optical axis 2a Substrate 3a Light guide lenses 3a1, 3a2, 3a7 Lens portions 3a1a, 3a1b Incident surface 3a1c Reflective surfaces 3a1d1, 3a1d2, 3a1d3 Emitter 3a1d4, 3a1d5 3a1d1a, 3a1d2a, 3a1d3a exit surface 3a1d4a, 3a1d5a emission surface 3a1e1,3a1e2,3a1e3 emitting portion 3a1e4,3a1e5 emitting portion 3a1e1a, 3a1e2a, 3a1e3a reflecting surface 3a1e4a, 3a1e5a reflecting surface 3a1e1b, 3a1e2b, 3a1e3b exit surface 3a1e4b, 3a1e5b exit surface 3A7a1, 3a7a2, 3a7b Incident surface 3a7c Reflective surface 3a7e1, 3a7e2, 3a7e3 Emitting part 3a7e4 Emitting part 3a7e1a, 3a7e2 , 3A7e3a reflecting surface 3a7e4a reflecting surface 3a7e1b, 3a7e2b, 3a7e3b emission surface 3a7e4b emission surface 3a7f emitting portion 3a7f1 reflecting surface 3a7f2a, 3a7f2b emission surface 3a7g emitting portion 3a7g1 emitting surface 10 LED lighting device

Claims (8)

The plate-like substrate (2a) is arranged perpendicular to the horizontal plane, and the first LED light source (1a7) is arranged so that the optical axis (1a7 ′) of the first LED light source (1a7) is perpendicular to the substrate (2a). In the LED lighting device (10) mounted on the substrate (2a),
A light guide lens (3a) having a first lens part (3a7) for controlling light distribution from the LED light source (1a7) is provided.
A first incident surface (3a7a1) on which light emitted upward from the first LED light source (1a7) at a first angle with the optical axis (1a7 ′) of the first LED light source (1a7) is incident; A second incident surface (3a7b) on which light emitted upward from the first LED light source (1a7) at a second angle larger than the first angle with the optical axis (1a7 ′) of 1a7) and the first LED A third incident surface (3a7a2) on which light emitted downward from the first LED light source (1a7) forms a third angle with the optical axis (1a7 ') of the light source (1a7), and a second incident surface (3a7b) ) And a reflecting surface (3a7c) that reflects light from the first LED light source (1a7) and travels in the direction of the optical axis (1a7 ′) of the first LED light source (1a7). Formed into
A reflective first emission part (3a7e1) for emitting light from the first incident surface (3a7a1), a reflective second emission part (3a7e2) for emitting light from the reflection surface (3a7c), A reflective third emitting portion (3a7f) for emitting light from the third incident surface (3a7a2) and a refractive emitting portion (3a7g) for emitting light from the third incident surface (3a7a2). Formed on the first lens portion (3a7) of the light guide lens (3a);
The reflective second emission part (3a7e2) is arranged above the reflective first emission part (3a7e1),
The reflection type third emission part (3a7f) and the refraction type emission part (3a7g) are arranged below the reflection type first emission part (3a7e1),
The light (L3a7e1) from the first incident surface (3a7e1) is reflected by the reflecting surface (3a7e1a) of the reflective first emitting portion (3a7e1), and then the emitting surface (3a7e1b) of the reflecting first emitting portion (3a7e1). ), And is irradiated as downward light (L3a7e1 ′) forming a fourth angle with the horizontal plane,
Light (L3a7e2) from the reflection surface (3a7c) is reflected by the reflection surface (3a7e2a) of the reflection-type second emission portion (3a7e2), and then passes through the emission surface (3a7e2b) of the reflection-type second emission portion (3a7e2). Transmitted and irradiated as downward light (L3a7e2 ′) forming a fifth angle approximately equal to the fourth angle with the horizontal plane,
The light (L3a7f2a) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the first emitting surface of the reflective third emitting portion (3a7f). (3a7f2a) is transmitted and irradiated as downward light (L3a7f2a ′) having a sixth angle larger than the fourth angle and the fifth angle with the horizontal plane,
The light (L3a7f2b) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the second emitting surface of the reflective third emitting portion (3a7f). (3a7f2b) is transmitted and irradiated as downward light (L3a7f2b ′) that forms a seventh angle that is greater than the fourth angle and the fifth angle and greater than the sixth angle with the horizontal plane,
The light (L3a7g) from the third entrance surface (3a7a2) is refracted by the exit surface (3a7g1) of the refraction type exit section (3a7g), and is directed downward to form an eighth angle smaller than the seventh angle with the horizontal plane. An LED lighting device (10), which is irradiated with light (L3a7g ′). Light (L3a7g) emitted downward from the first LED light source (1a7) at a ninth angle with the optical axis (1a7 ′) of the first LED light source (1a7) and transmitted through the third incident surface (3a7a2). Refracted by the exit surface (3a7g1) of the refraction-type exit section (3a7g) and irradiated as downward light (L3a7g ′) having an eighth angle smaller than 90 ° with the horizontal plane,
The first LED light source (1a7) emits downward from the first LED light source (1a7) at a tenth angle smaller than the ninth angle with the optical axis (1a7 ') of the first LED light source (1a7), and is transmitted through the third incident surface (3a7a2). The reflected light (L3a7f2b) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then transmitted through the second emitting surface (3a7f2b) of the reflecting third emitting portion (3a7f), The LED illumination device (10) according to claim 1, wherein the LED illumination device (10) is irradiated in the form of downward light (L3a7f2b ') that forms 90 ° with the horizontal plane. A reflective fourth emitting portion (3a7e3) for emitting light from the first incident surface (3a7a1) or the reflecting surface (3a7c) is formed on the first lens portion (3a7) of the light guide lens (3a);
The reflective fourth emitting part (3a7e3) is disposed between the reflective first emitting part (3a7e1) and the reflective second emitting part (3a7e2),
Outgoing surface (3a7e3b) of the reflective fourth emitting portion (3a7e3b) between the reflecting surface (3a7e1a) of the reflecting first emitting portion (3a7e1) and the reflecting surface (3a7e3a) of the reflecting fourth emitting portion (3a7e3) And place
Outgoing surface (3a7e2b) of the reflective second emitting portion (3a7e2b) between the reflecting surface (3a7e2a) of the reflecting second emitting portion (3a7e2) and the reflecting surface (3a7e3a) of the reflecting fourth emitting portion (3a7e3) The LED lighting device (10) according to claim 1 or 2, characterized in that is arranged. The second LED light source (1a1) is mounted on the substrate (2a) so that the optical axis (1a1 ′) of the second LED light source (1a1) is perpendicular to the substrate (2a),
Forming a second lens part (3a1) for controlling light distribution from the second LED light source (1a1) in the light guide lens (3a);
A first incident surface (3a1a) on which light emitted from the second LED light source (1a1) forms an eleventh angle with the optical axis (1a1 ') of the second LED light source (1a1), and a second LED light source (1a1) A second incident surface (3a1b) on which light emitted from the second LED light source (1a1) forms a twelfth angle larger than the eleventh angle with the optical axis (1a1 ′) of the second lens portion (3a1) The second lens portion (3a1) has a reflecting surface (3a1c) that reflects light from the second incident surface (3a1b) of the second LED light source (1a1) and reflects the light in the direction of the optical axis (1a1 ′) of the second LED light source (1a1). )
Light from the refraction-type first emission part (3a1d1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1) and the reflection surface (3a1c) of the second lens part (3a1) A refraction-type second emission part (3a1d2) for emitting light, a reflection-type first emission part (3a1e1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1), A reflection type second emission part (3a1e2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) is formed in the second lens part (3a1);
The refraction type second emission part (3a1d2) of the second lens part (3a1) is disposed above the refraction type first emission part (3a1d1) of the second lens part (3a1),
The reflective first emission part (3a1e1) of the second lens part (3a1) is disposed below the refractive first emission part (3a1d1) of the second lens part (3a1),
The reflective second emission part (3a1e2) of the second lens part (3a1) is disposed below the reflective first emission part (3a1e1) of the second lens part (3a1),
The light (L3a1d1) from the first incident surface (3a1a) of the second lens unit (3a1) is refracted by the output surface (3a1d1a) of the refractive first output unit (3a1d1) of the second lens unit (3a1). Irradiates as downward light (L3a1d1 ′) forming a thirteenth angle with the horizontal plane,
The light (L3a1d2) from the reflecting surface (3a1c) of the second lens unit (3a1) is refracted by the emitting surface (3a1d2a) of the refractive second emitting unit (3a1d2) of the second lens unit (3a1), and is horizontal. And is irradiated as downward light (L3a1d2 ′) having a fourteenth angle smaller than the thirteenth angle,
Light (L3a1e1) from the first incident surface (3a1a) of the second lens unit (3a1) is reflected by the reflective surface (3a1e1a) of the reflective first emitting unit (3a1e1) of the second lens unit (3a1). Next, the light is transmitted through the emission surface (3a1e1b) of the reflective first emission part (3a1e1) of the second lens unit (3a1), and forms a fifteenth angle greater than the thirteenth angle and the fourteenth angle with the horizontal plane. Irradiated as downward light (L3a1e1 ′),
The light (L3a1e2) from the reflecting surface (3a1c) of the second lens unit (3a1) is reflected by the reflecting surface (3a1e2a) of the reflective second emitting unit (3a1e2) of the second lens unit (3a1), and then Transmitted through the exit surface (3a1e2b) of the reflective second exit portion (3a1e2) of the second lens portion (3a1), larger than the 13th angle and the 14th angle with the horizontal plane, and from the 15th angle The LED illumination device (10), which is irradiated as downward light (L3a1e2 ') having a large sixteenth angle. A refraction-type third emitting portion (3a1d3) for emitting light from the first incident surface (3a1a) or the reflecting surface (3a1c) of the second lens portion (3a1), and the first of the second lens portion (3a1). A reflective third emitting portion (3a1e3) for emitting light from the incident surface (3a1a) or the reflecting surface (3a1c) is formed on the second lens portion (3a1);
The refraction-type third emission part (3a1d3) of the second lens part (3a1) is replaced with the refraction-type first emission part (3a1d1) of the second lens part (3a1) and the refraction-type second emission part of the second lens part (3a1). (3a1d2) and
The reflection type third emission part (3a1e3) of the second lens part (3a1) is replaced with the reflection type first emission part (3a1e1) of the second lens part (3a1) and the reflection type second emission part of the second lens part (3a1). (3a1e2)
The light (L3a1d3) from the first incident surface (3a1a) or the reflective surface (3a1c) of the second lens unit (3a1) is output from the refractive third output unit (3a1d3) of the second lens unit (3a1). Refracted by 3a1d3a) and irradiated as downward light (L3a1d3 ′) that forms a seventeenth angle smaller than the thirteenth angle and larger than the fourteenth angle.
The light (L3a1e3) from the first incident surface (3a1a) or the reflective surface (3a1c) of the second lens unit (3a1) is reflected on the reflective surface (3a1e3) of the reflective third emitting unit (3a1e3) of the second lens unit (3a1). 3a1e3a), and then transmitted through the exit surface (3a1e3b) of the reflective third exit portion (3a1e3) of the second lens portion (3a1), which is larger than the 15th angle and the 16th angle. The LED illumination device (10) according to claim 4, wherein the LED illumination device (10) is irradiated as downward light (L3a1e3 ') having a small 18th angle. Light is emitted from the refraction-type fourth emission part (3a1d4) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) and the reflection surface (3a1c) of the second lens part (3a1). A reflection type fourth emitting portion (3a1e4) for forming the second lens portion (3a1),
The refraction type fourth emission part (3a1d4) of the second lens part (3a1) is arranged above the refraction type second emission part (3a1d2) of the second lens part (3a1),
The reflective fourth emission part (3a1e4) of the second lens part (3a1) is arranged below the reflective second emission part (3a1e2) of the second lens part (3a1),
The light (L3a1d4) from the reflection surface (3a1c) of the second lens unit (3a1) is refracted by the output surface (3a1d4a) of the refractive fourth output unit (3a1d4) of the second lens unit (3a1), and is horizontal. And radiated as downward light (L3a1d4 ′) having a nineteenth angle smaller than the fourteenth angle,
The light (L3a1e4) from the reflective surface (3a1c) of the second lens unit (3a1) is reflected by the reflective surface (3a1e4a) of the reflective fourth emitting unit (3a1e4) of the second lens unit (3a1), and then Downward light (L3a1e4 ′) that is transmitted through the emission surface (3a1e4b) of the reflective fourth emission part (3a1e4) of the second lens unit (3a1) and forms a twentieth angle greater than the sixteenth angle with the horizontal plane. The LED illumination device (10) according to claim 5, wherein the LED illumination device (10) is irradiated. Light is emitted from the refraction-type fifth emission part (3a1d5) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) and the reflection surface (3a1c) of the second lens part (3a1). And a reflection type fifth emitting portion (3a1e5) for forming the second lens portion (3a1),
The refraction type fifth emission part (3a1d5) of the second lens part (3a1) is replaced with the refraction type second emission part (3a1d2) of the second lens part (3a1) and the refraction type fourth emission part of the second lens part (3a1). (3a1d4)
The reflection type fifth emission part (3a1e5) of the second lens part (3a1) is replaced with the reflection type second emission part (3a1e2) of the second lens part (3a1) and the reflection type fourth emission part of the second lens part (3a1). (3a1e4),
The light (L3a1d5) from the reflection surface (3a1c) of the second lens unit (3a1) is refracted by the output surface (3a1d5a) of the refractive fifth output unit (3a1d5) of the second lens unit (3a1), and is horizontal. And downward light (L3a1d5 ′) having a twenty-first angle smaller than the fourteenth angle and larger than the nineteenth angle.
The light (L3a1e5) from the reflecting surface (3a1c) of the second lens unit (3a1) is reflected by the reflecting surface (3a1e5a) of the reflective fifth emitting unit (3a1e5) of the second lens unit (3a1), and then The second lens unit (3a1) is transmitted through the output surface (3a1e5b) of the reflective fifth output unit (3a1e5), and forms a downward direction that forms a twenty-second angle that is greater than the sixteenth angle and smaller than the twentieth angle. The LED illumination device (10) according to claim 6, wherein the LED illumination device (10) is irradiated with the light (L3a1e5 '). A support portion (6) having a regular N prism shape having a regular N (N is an integer of 3 or more) square tip surface (6z) and N rectangular side surfaces (6a, 6b, 6c, 6d). ,
The first to Nth plate-like substrates (2a, 2b, 2c, 2d) are set to a positive N angle so as to be perpendicular to the horizontal plane and have a (360 / N) ° rotationally symmetric relationship. Arranged on N rectangular side surfaces (6a, 6b, 6c, 6d) of the columnar support (6);
The first LED light source so that the optical axis (1a7 ′) of the first LED light source (1a7) and the optical axis (1a1 ′) of the second LED light source (1a1) are perpendicular to the first plate-like substrate (2a). (1a7) and the second LED light source (1a1) are mounted on the first plate-like substrate (2a),
A plurality of LED light sources (1b7, 1c7, 1d7) having a (360 / N) ° rotational symmetry relationship with the first LED light source (1a7) and the second LED light source (1a1) mounted on the first plate-like substrate (2a) , 1b1, 1c1, 1d1) are mounted on the second to Nth plate-shaped substrates (2b, 2c, 2d),
In the LED illumination device (10) including a base (7) for supplying current to each LED light source (1a7, 1b7, 1c7, 1d7, 1a1, 1b1, 1c1, 1d1),
First to Nth light guide lenses (3a, 3b, 3c, 3d) for controlling light distribution of the light from each LED light source (1a7, 1b7, 1c7, 1d7, 1a1, 1b1, 1c1, 1d1), (360 / N) degrees so as to have a rotationally symmetric relationship,
Light emitted upward from the first LED light source (1a7) at an angle with the optical axis (1a7 ′) of the first LED light source (1a7) mounted on the first plate-like substrate (2a) is incident. Light emitted upward from the first LED light source (1a7) at a second angle greater than the first angle with the first incident surface (3a7a1) and the optical axis (1a7 ′) of the first LED light source (1a7) The second incident surface (3a7b) on which the light enters and the optical axis (1a7 ′) of the first LED light source (1a7) form a third angle and light emitted downward from the first LED light source (1a7) enters A three-incidence surface (3a7a2) and a reflection surface (3a7c) that reflects light from the second incidence surface (3a7b) to make light proceed in the direction of the optical axis (1a7 ′) of the first LED light source (1a7). The first lens portion (3a7) of the first light guide lens (3a) )
A reflective first emission part (3a7e1) for emitting light from the first incident surface (3a7a1), a reflective second emission part (3a7e2) for emitting light from the reflection surface (3a7c), A reflective third emitting portion (3a7f) for emitting light from the third incident surface (3a7a2) and a refractive emitting portion (3a7g) for emitting light from the third incident surface (3a7a2). Formed in the first lens portion (3a7) of the first light guide lens (3a);
The reflective second emission part (3a7e2) is arranged above the reflective first emission part (3a7e1),
The reflection type third emission part (3a7f) and the refraction type emission part (3a7g) are arranged below the reflection type first emission part (3a7e1),
The light (L3a7e1) from the first incident surface (3a7e1) is reflected by the reflecting surface (3a7e1a) of the reflective first emitting portion (3a7e1), and then the emitting surface (3a7e1b) of the reflecting first emitting portion (3a7e1). ), And is irradiated as downward light (L3a7e1 ′) forming a fourth angle with the horizontal plane,
Light (L3a7e2) from the reflection surface (3a7c) is reflected by the reflection surface (3a7e2a) of the reflection-type second emission portion (3a7e2), and then passes through the emission surface (3a7e2b) of the reflection-type second emission portion (3a7e2). Transmitted and irradiated as downward light (L3a7e2 ′) forming a fifth angle approximately equal to the fourth angle with the horizontal plane,
The light (L3a7f2a) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the first emitting surface of the reflective third emitting portion (3a7f). (3a7f2a) is transmitted and irradiated as downward light (L3a7f2a ′) having a sixth angle larger than the fourth angle and the fifth angle with the horizontal plane,
The light (L3a7f2b) from the third incident surface (3a7a2) is reflected by the reflecting surface (3a7f1) of the reflective third emitting portion (3a7f), and then the second emitting surface of the reflective third emitting portion (3a7f). (3a7f2b) is transmitted and irradiated as downward light (L3a7f2b ′) that forms a seventh angle that is greater than the fourth angle and the fifth angle and greater than the sixth angle with the horizontal plane,
The light (L3a7g) from the third entrance surface (3a7a2) is refracted by the exit surface (3a7g1) of the refraction type exit section (3a7g), and is directed downward to form an eighth angle smaller than the seventh angle with the horizontal plane. Irradiated with light (L3a7g ′),
The light incident from the second LED light source (1a1) is incident on the optical axis (1a1 ′) of the second LED light source (1a1) mounted on the first plate-like substrate (2a) at a ninth angle. The first incident surface (3a1a) and the optical axis (1a1 ′) of the second LED light source (1a1) and the light emitted from the second LED light source (1a1) are incident at a tenth angle greater than the ninth angle. Light that travels in the direction of the optical axis (1a1 ′) of the second LED light source (1a1) by reflecting light from the second incident surface (3a1b) and the second incident surface (3a1b) of the second lens portion (3a1) A reflecting surface (3a1c) to be formed on the second lens portion (3a1) of the first light guide lens (3a),
Light from the refraction-type first emission part (3a1d1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1) and the reflection surface (3a1c) of the second lens part (3a1) A refraction-type second emission part (3a1d2) for emitting light, a reflection-type first emission part (3a1e1) for emitting light from the first incident surface (3a1a) of the second lens part (3a1), A reflection type second emission part (3a1e2) for emitting light from the reflection surface (3a1c) of the second lens part (3a1) is formed in the second lens part (3a1);
The refraction type second emission part (3a1d2) of the second lens part (3a1) is disposed above the refraction type first emission part (3a1d1) of the second lens part (3a1),
The reflective first emission part (3a1e1) of the second lens part (3a1) is disposed below the refractive first emission part (3a1d1) of the second lens part (3a1),
The reflective second emission part (3a1e2) of the second lens part (3a1) is disposed below the reflective first emission part (3a1e1) of the second lens part (3a1),
The light (L3a1d1) from the first incident surface (3a1a) of the second lens unit (3a1) is refracted by the output surface (3a1d1a) of the refractive first output unit (3a1d1) of the second lens unit (3a1). Irradiates as downward light (L3a1d1 ′) forming an eleventh angle with the horizontal plane,
The light (L3a1d2) from the reflecting surface (3a1c) of the second lens unit (3a1) is refracted by the emitting surface (3a1d2a) of the refractive second emitting unit (3a1d2) of the second lens unit (3a1), and is horizontal. And is irradiated as downward light (L3a1d2 ′) having a twelfth angle smaller than the eleventh angle,
Light (L3a1e1) from the first incident surface (3a1a) of the second lens unit (3a1) is reflected by the reflective surface (3a1e1a) of the reflective first emitting unit (3a1e1) of the second lens unit (3a1). Next, the light is transmitted through the emission surface (3a1e1b) of the reflective first emission part (3a1e1) of the second lens unit (3a1), and forms a thirteenth angle greater than the eleventh and twelfth angles with the horizontal plane. Irradiated as downward light (L3a1e1 ′),
The light (L3a1e2) from the reflecting surface (3a1c) of the second lens unit (3a1) is reflected by the reflecting surface (3a1e2a) of the reflective second emitting unit (3a1e2) of the second lens unit (3a1), and then It is transmitted through the exit surface (3a1e2b) of the reflective second exit portion (3a1e2) of the second lens portion (3a1), and is larger than the eleventh angle and the twelfth angle, and the thirteenth angle. The LED illumination device (10), which is irradiated as downward light (L3a1e2 ′) having a large fourteenth angle.

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