JP5971542B2 - LED lighting fixtures - Google Patents

Description

  The present invention relates to an LED lighting apparatus applied to a spotlight or the like installed on a wall surface or a pillar.

  Conventionally, a right side in which a plurality of light sources supported on the right side of a mounting plate and a light control body in which prisms are formed so that ridge lines are continuous in a direction substantially orthogonal to the LED arrangement direction of the light source are incorporated in the instrument body 2. Description of the Related Art LED lighting fixtures equipped with a crime prevention light are known (see, for example, Patent Document 1).

JP 2009-152170 A (FIG. 9, paragraph 0084)

Patent document 1 can perform efficient illumination on roads such as corners, curves, and dead ends, and can minimize light leakage.
In general, in an LED luminaire that requires light distribution on one side, it is installed at the end of the irradiation area in order to effectively use the irradiation area with respect to the irradiation area.
In this case, irradiation in only one direction is required in consideration of light efficiency and light damage outside the irradiation area.

By the way, as LED lighting fixture which performs such a one side light distribution, what inclined LED which is a light source to the irradiation direction is proposed.
As shown in FIG. 6, such a conventional LED lighting apparatus 100 has a mounting surface 101 orthogonal to the front direction A10.
In such a conventional LED lighting apparatus 100, the inclined mounting plate 102 is attached to the mounting surface 101, and the substrate 104 on which the LED 103 is mounted is attached to the mounting plate 102. The optical axis B10 faces outward with respect to the front direction A10.

However, in such a conventional LED lighting apparatus 100, when the angle of the optical axis B10 with respect to the front direction A10 is increased, the inclination angle of the substrate 104 including the LEDs 103 is increased, and thus it is difficult to take a heat dissipation structure.
Therefore, when such a conventional LED lighting apparatus 100 takes the optical axis B10 forward in order to irradiate a wide area, it becomes a spot-like light distribution, and unevenness is likely to occur, for example, when lighting a parking lot or the like. .

On the other hand, as an LED lighting apparatus that performs such a one-sided light distribution, an LED lighting apparatus in which the irradiation direction is changed by a lens has been proposed.
However, in such a conventional LED lighting fixture, when a high-power LED using an LED having a large light emitting surface as a light source is applied, a lens for high-efficiency light control corresponding to the LED is enlarged.
Therefore, such a conventional LED lighting apparatus becomes large as a whole and cannot be made compact.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an LED lighting apparatus that can reduce unevenness of an irradiation surface and can be downsized, and can effectively suppress light damage such as glare. There is.

An LED lighting apparatus according to the present invention includes an arm that is attached to a mounted portion, an appliance body that opens downward and has an inner upper surface that is stepped, and a plurality of LED light emitting units that are housed inside the appliance body. A translucent panel that covers the opening of the instrument body, and the direction along the line segment connecting the end of the instrument body close to the arm and the end far from the arm When the longitudinal direction of the main body and the direction orthogonal to the longitudinal direction of the instrument main body are the short direction of the instrument main body, the inner upper surface of the instrument main body is in the short direction of the instrument main body. A first flat surface extending along the first flat surface, closer to the arm than the first flat surface, and below the first flat surface, and in a short direction of the instrument body A second flat surface extending along the first flat surface and the second flat surface A connecting surface that connects the carrier surface with a step having a predetermined height, and the plurality of LED light emitting units are attached to the first flat surface of the appliance main body, In the first LED package row, a first LED package row comprising a plurality of LED packages fixed on the first heat radiation member and arranged in a row along the short direction of the instrument body, A plurality of first lenses provided for each LED package, and an inner side of the instrument body along the lateral direction of the instrument body at a position closer to the arm than each LED package of the first LED package row A first reflecting member provided with one reflecting surface that is erected downward from the upper surface side of the first LED package and reflects light from each LED package of the first LED package row; A second heat dissipating member attached to the second flat surface of the body, and a plurality of LED packages fixed on the second heat dissipating member and arranged in a line along the short direction of the instrument body A plurality of second lenses provided for each LED package in the second LED package array, and closer to the arm than each LED package in the second LED package array A light source that is erected downward from the upper side of the inner side of the instrument body along the short direction of the instrument body at a position and reflects light from each LED package of the second LED package row; A second reflecting member having two reflecting surfaces, and the light that is reflected by the one reflecting surface in each of the first and second reflecting members and whose light distribution is controlled is A part of the light emitted obliquely downward so as to be away from the arm through the light-sensitive panel and emitted from each LED package of the second LED package row to the first reflecting member side However, the light is shielded by the surface of the first reflecting member opposite to the one reflecting surface .

In the LED lighting apparatus according to the present invention, each of the plurality of first lenses and the plurality of second lenses is along a longitudinal direction of the apparatus main body in a plan view as viewed from the translucent panel side. major axis and having an oval shape having a minor axis along the lateral direction of the instrument body.

The LED lighting apparatus according to the present invention, the first, the reflecting surface of the second reflecting member Ru parabolic der.

In the LED lighting device according to the present invention, a lighting circuit is provided inside the device body, and includes the first and second LED package rows, the first and second reflecting members, and the lighting circuit. the center of gravity of the instrument body, said instrument body, than the center in the longitudinal direction of the instrument body you located on the side of the arm.

  According to the LED lighting apparatus according to the present invention, it is possible to reduce the unevenness of the irradiation surface and reduce the size, and to suppress the light damage such as glare.

The partially broken external appearance perspective view seen from diagonally downward of the LED lighting fixture of 1st Embodiment which concerns on this invention 1 is a vertical sectional view in the longitudinal direction of an LED lighting apparatus according to a first embodiment of the present invention The bottom view of the LED lighting fixture of 1st Embodiment which concerns on this invention The vertical sectional view around the LED light emission part of the LED lighting apparatus of the first embodiment according to the present invention The partially broken external appearance perspective view seen from diagonally downward of the LED lighting fixture of 2nd Embodiment which concerns on this invention Vertical sectional view of a conventional LED lighting fixture

Hereinafter, LED lighting fixtures according to a plurality of embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the LED lighting apparatus 10 according to the first embodiment of the present invention includes an apparatus main body 11, an LED light emitting unit 13 having a plurality of LED packages 12 accommodated in the apparatus main body 11, and the apparatus main body 11. A translucent panel 15 covering the lower opening 14.
Since the instrument body 11 is made of aluminum die casting and is connected to the arm 17 via the rotation mechanism 16, the arm 17 is attached to an installation portion (not shown) such as an upper part of a column or a wall surface. The irradiation direction can be changed.

The LED light emitting unit 13 is attached to the opposite side of the arm 17 with respect to the center of the instrument body 11. The LED light emitting unit 13 has a plurality of LED packages 12 arranged in the short direction of the instrument body 11 arranged in two rows in the longitudinal direction of the instrument body 11.
Note that the LED light emitting unit 13 is not limited to arranging the plurality of LED packages 12 in two rows in the longitudinal direction of the instrument body 11, and may arrange two or more rows.

In the LED light emitting unit 13, a single reflecting member 18 is attached to the arm 17 side of each LED package 12, and a lens 19 is attached to the LED package 12.
The reflection member 18 is attached to the arm 17 side of the LED package 12 in the short direction perpendicular to the longitudinal direction of the instrument body 11.
One reflecting member 18 is arranged for a plurality of LED packages 12 arranged in the short direction of the instrument body 11.
Accordingly, the number of components can be reduced and the adjustment of the direction of the optical axis of each LED package 12 can be performed at a time compared with the case where the reflecting member is attached to each of the plurality of LED light emitting units independently. Variations in light distribution can be prevented.

As shown in FIG. 2, the lighting body 20 is accommodated in the instrument body 11 on the arm 17 side which is the base end side. The lighting circuit 20 is electrically connected to an external control circuit.
The lens 19 is formed of a translucent acrylic resin material, and one lens 19 is attached to each LED package 12.
The reflecting member 18 has a mirror-like reflecting surface 21 with a parabola inclined with the light emitting surface center of the LED package 12 as a focal position. The reflection member 18 is formed by bending a sheet metal member.
The reflecting member 18 can be formed using a resin material instead of bending the sheet metal member. Further, the reflecting surface 21 may be white paint instead of the mirror surface. Furthermore, the reflective surface 21 may have a surface that has been subjected to a diffusion treatment.

The LED lighting device 10 includes a heat radiation member 22 attached to the device body 11, and an LED substrate 24 on which the LED 23 is sealed and a lens 19 are attached to the heat radiation member 22.
The heat radiating member 22 is made of aluminum having high heat radiating characteristics, and is thermally connected to the instrument body 11.

As shown in FIG. 3, the lens 19 is formed in an oval shape in plan view having a long side portion 25 in the longitudinal direction of the instrument body 11 and a short side portion 26 in the short direction of the instrument body 11 in plan view. ing.
That is, in the lens 19, the extended line of the center line C <b> 1 of the long side portion 25 is arranged orthogonal to the reflecting surface 21 of the reflecting member 18, and the center line C <b> 2 of the short side portion 26 is arranged parallel to the reflecting surface 21. Is done.

Next, the detailed structure of the LED light emission part 13 of the LED lighting fixture 10 and the optical characteristic of the LED lighting fixture 10 are demonstrated.
As shown in FIG. 4, the LED substrate 24 is thermally connected and fixed to the heat dissipation member 22 by screwing screws 27 into the heat dissipation member 22.
The LED substrate 24 has a printed circuit (not shown), and this printed circuit is electrically connected to the lighting circuit 20.
The reflection member 18 is thermally connected and fixed to the heat dissipation member 22 in the same manner as the LED substrate 24.
Accordingly, the heat generated when the LED substrate 24 and the reflecting member 18 generate heat can be efficiently dissipated by the heat dissipating member 22, so that the life of the LED 23 can be extended and the light efficiency can be improved.

The lens 19 has an incident portion 28 arranged in a non-contact manner on the LED 23 on the inner surface, and has an emission portion 29 facing the incident portion 28 on the outer surface, and is fixed by screwing a screw 30 into the heat radiating member 22. ing.
The lens 19 generates a light component α1 in the main optical axis direction having a narrow light distribution that does not travel toward the reflecting surface 21 of the reflecting member 18 among the light emitted from the LED 23.

Here, since the reflecting member 21 has a predetermined curvature with respect to the normal line of the LED substrate 24, the reflecting member 18 is light that travels toward the reflecting surface 21 out of the light emitted from the LED 23. The component is controlled in a predetermined direction and reflected.
Then, the reflecting member 18 generates a light component α2 in the main optical axis direction having a laterally spread light distribution by the reflecting surface 21, and combines the light component α2 with the light component α1.
Therefore, the luminous intensity of the main optical axis can be increased by combining the light component α1 having a narrow light distribution and the light component α2 having a laterally spread light distribution by combining the lens 19 and the reflecting member 18.

As described above, according to the LED lighting apparatus 10 of the first embodiment of the present invention described above, the unevenness of the irradiation surface is obtained by synthesizing the light component α1 having a narrow light distribution and the light component α2 having a laterally spread light distribution. It is possible to reduce light pollution such as glare.
Moreover, according to the LED lighting fixture 10, since an irradiation direction is not changed with a lens like the conventional thing, it can reduce in size.

  Then, according to the LED lighting apparatus 10, the light that is combined with the light component α <b> 1 having a narrow light distribution that is generated by the lens 19 being reflected by the reflecting member 18 and that does not travel toward the reflecting member 18. Component α2 can be generated.

  Furthermore, according to the LED lighting fixture 10, since the number of parts can be reduced and the adjustment of the optical axis direction of each LED package 12 can be performed at one time, the variation in the light distribution of each LED package 12 can be prevented.

  In addition, according to the LED lighting apparatus 10, it is possible to generate the light component α2 in the main optical axis direction having a laterally spread light distribution combined with the light component α1 with the reflection by the reflecting member 18.

(Second Embodiment)
Next, the LED lighting fixture of 2nd Embodiment which concerns on this invention is demonstrated.
Note that, in the following second embodiment, components that are the same as those in the first embodiment described above or components that are functionally similar are denoted by the same or corresponding reference numerals in the drawings, or the description is simplified. Omitted.

As shown in FIG. 5, the LED lighting apparatus 40 according to the second embodiment of the present invention includes an LED light emitting unit 13 and a reflecting member 18 having a plurality of LED packages 12 on the arm 17 side with respect to the center of the apparatus main body 11. It is attached.
In the LED lighting device 40, the lighting circuit 20 is accommodated in the upper part of the LED light emitting unit 13.
Therefore, the gravity circuit positions of the lighting circuit 20, the LED light emitting unit 13, and the reflecting member 18, which are heavy objects, are attached to the arm 17 side in the appliance main body 11 in a biased manner.
Therefore, the weight can be stabilized as compared with the case where a heavy object is disposed on the opposite side of the instrument body 11 from the arm 17.

  According to the LED lighting device 40, since the gravity center positions of the LED light emitting unit 13 and the reflection member 18 that are heavy objects are attached to the arm 17 side in the device main body 11, the weight can be stabilized.

  In addition, in the LED lighting fixture of this invention, a fixture main body, a lighting circuit, a panel, a rotation mechanism, an arm, etc. are not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

DESCRIPTION OF SYMBOLS 10,40 LED lighting fixture 11 Appliance main body 13 LED light emission part 18 Reflective member 19 Lens 22 Heat radiation member 23 LED
24 LED board 25 Long side 26 Short side

Claims (4)

An arm attached to the attached portion;
An instrument body that opens downward and has a stepped inner upper surface;
A plurality of LED light emitting units housed inside the instrument body;
A translucent panel covering the opening of the instrument body;
With
The direction along the line segment connecting the end of the instrument main body close to the arm and the end remote from the arm is the longitudinal direction of the instrument main body, and the direction orthogonal to the longitudinal direction of the instrument main body is the instrument main body. The upper side of the instrument body, which is stepwise, has a first flat surface extending along the short direction of the instrument body and the first flat surface. A second flat surface located near the arm and below the first flat surface, and extending along a short direction of the instrument body, and the first flat surface, A connecting surface that connects the second flat surface with a step having a predetermined height, and
The plurality of LED light emitting units are:
A first heat dissipating member attached to the first flat surface of the instrument body, and a plurality of the heat dissipating members fixed on the first heat dissipating member and arranged in a line along the short direction of the instrument body. A first LED package array composed of LED packages, a plurality of first lenses provided for each LED package in the first LED package array, and the arm more than each LED package in the first LED package array At a position close to the vertical direction of the fixture body along the short direction of the fixture body, and standing downward from the inner upper surface side of the fixture body, and reflects light from each LED package of the first LED package row A first reflecting member comprising one reflecting surface;
A second heat dissipating member attached to the second flat surface of the instrument body, and a plurality of heat dissipating members fixed on the second heat dissipating member and arranged in a line along the short direction of the instrument body. A second LED package array composed of LED packages, a plurality of second lenses provided for each LED package in the second LED package array, and the arm more than each LED package in the second LED package array At a position close to the vertical direction of the fixture body along the short direction of the fixture body, and is erected downward from the inner upper surface side of the fixture body, and reflects light from each LED package of the second LED package row A second reflecting member comprising one reflecting surface;
Including
The light whose light distribution is controlled by being reflected by the one reflecting surface of each of the first and second reflecting members is emitted obliquely downward so as to be away from the arm through the translucent panel. And a part of the light emitted from each LED package of the second LED package row to the first reflecting member side is opposite to the one reflecting surface of the first reflecting member. LED luminaire shielded by the surface of In the LED lighting fixture of Claim 1,
Each of the plurality of first lenses and the plurality of second lenses includes a long axis along the longitudinal direction of the instrument body and a short side of the instrument body in a plan view as viewed from the translucent panel side. An LED luminaire having an oval shape with a minor axis along the direction. In the LED lighting fixture of Claim 1 or Claim 2,
The LED lighting fixture in which the reflective surfaces of the first and second reflective members are parabolic surfaces. In the LED lighting fixture of any one of Claim 1 thru | or 3,
A lighting circuit is provided inside the fixture body, and the center of gravity of the fixture body including the first and second LED package rows, the first and second reflecting members, and the lighting circuit is the fixture body. The LED lighting fixture which is located in the said arm side rather than the center in the longitudinal direction of the said fixture main body.

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