JP6052662B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture.

  2. Description of the Related Art Conventionally, lighting devices that can be mounted on a ceiling have been provided (see, for example, Patent Document 1). This lighting device includes a base plate formed in a disk shape, a power feeding unit and a lighting device are attached to a substantially central portion of the base plate, and a plurality of LEDs are arranged around the lighting device on one surface of the base plate. Are arranged in an annular shape. Further, in front of the plurality of LEDs, a narrow-angle light distribution unit that condenses the light emitted from the LEDs directly below and a wide-angle light distribution unit that diffuses the light emitted from the LEDs along the LED arrangement direction. Alternatingly arranged light distribution control members are rotatably provided.

  In this illumination device, the light distribution control member is rotated so that the narrow-angle light distribution unit faces each LED, so that the light emitted from the LED can be condensed directly below, and the wide-angle light distribution unit faces each LED. By doing so, the light emitted from the LED can be diffused to a wide angle.

JP 2003-86006 A (paragraph [0022] -paragraph [0031] and FIGS. 1 to 4)

  In the illumination device shown in the above-mentioned Patent Document 1, although the light emitted from the LED can be distributed at a wide angle, the amount of light toward the center of the device where the lighting device is disposed is small compared to the amount of light directly below. There was a problem that the central part became darker than that of the part and the appearance was poor.

  The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a lighting apparatus having an improved appearance by distributing light emitted from an LED over the entire surface of the diffusing member. There is.

The lighting fixture of the present invention includes a fixture main body, a power feeding portion arranged in the center of the fixture main body, and a plurality of LEDs that are arranged in an annular shape around the power feeding portion and are lit by power supplied from the power feeding portion. Prepare. Moreover, this lighting fixture is arrange | positioned ahead of several LED, the optical member which controls the light distribution of the light radiated | emitted from several LED, the light arrange | positioned ahead of an optical member, and light distribution control by the optical member And a diffusion member for diffusing. The optical member is provided with a lens portion that is convex forward at a portion corresponding to each of the plurality of LEDs. Each LED is arranged on the circumference of the first LED arranged on the circumference of the first circle or the circumference of the second circle which is concentric with the first circle and has a radius larger than that of the first circle. It is one of the second LEDs. Each lens unit is either a first lens unit provided at a site corresponding to the first LED or a second lens unit provided at a site corresponding to the second LED. Each lens portion has a first convex portion that distributes light from the corresponding LED toward the center side of the diffusing member at an end portion on the power feeding portion side in the first direction connecting the lens portion and the power feeding portion. And a second convex portion that distributes the light from the corresponding LED toward the outer edge side of the diffusing member at the end opposite to the power feeding portion in the first direction. The surface of the 1st convex part and the surface of the 2nd convex part are each curved surfaces.

  In this lighting fixture, each lens unit has an emission angle of the first main beam having the highest light intensity among the light emitted from the first convex part and the light intensity of the light emitted from the second convex part. It is preferable that the emission angle of the strongest second main beam is set to the same angle as the other lens portions.

  Further, in this lighting fixture, each lens unit has an emission angle of the first main beam having the highest light intensity among the light emitted from the first convex part with respect to the optical axis of the corresponding LED, and the first It is also preferable that the emission angle of the second main beam having the highest light intensity among the light emitted from the two convex portions is set to the same angle.

Further, in this lighting device, the first circle has a radius set to r1, the second circle has a radius set to r2 larger than r1, and the first convex portion of the first lens unit. The angle formed by the first main beam having the highest light intensity of the light emitted from the first LED and the optical axis of the first LED is θ1, and from the intersection of the first main beam of the first lens portion and the diffusing member, The distance from the first circle and the second circle to the first line parallel to the optical axis is L1, and the light intensity is the highest among the light emitted from the first convex portion of the second lens portion. When the angle between the strong first main beam and the optical axis of the second LED is θ2, and the distance from the intersection of the first main beam and the diffusing member of the second lens portion to the first line is L2, The first lens unit and the second lens unit are angled so as to satisfy 2 × r1 ≧ r2, 3 × L2 ≦ L1, r1 ≧ L1, L2 ≧ 0. Also preferred θ1 and θ2 are set. Here, the intersection of the first main beam and the diffusing member refers to an intersection of the first main beam and the inner surface of the diffusing member.

  In this lighting fixture, it is also preferable that each lens unit is subjected to diffusion treatment on at least one of the incident surface and the exit surface.

  Furthermore, in this lighting fixture, it is also preferable that each lens unit has enhanced diffusivity in the vicinity of the optical axis of the corresponding LED compared to other parts.

  There is an effect that it is possible to provide a luminaire having improved appearance by distributing light emitted from the LED over the entire surface of the diffusing member.

FIG. 3 is an exploded perspective view illustrating an example of a lighting fixture according to the first embodiment. (A) is the same external perspective view seen from the front side, (b) is the same external perspective view seen from the rear side. It is a principal part enlarged view same as the above. (A) (b) is a light distribution characteristic view of the optical member which comprises the same as the above. (A) (b) is another light distribution characteristic figure of the optical member which comprises the same as the above. (A) (b) is another light distribution characteristic view of the optical member which comprises the same as the above. (A) (b) is another light distribution characteristic figure of the optical member which comprises the same as the above. (A) (b) is a principal part enlarged view of the optical member which comprises the same as the above. It is a schematic diagram which shows the light distribution state of the lighting fixture of Embodiment 2. (A) (b) is a light distribution characteristic view of the optical member which comprises the same, (c) (d) is a light distribution characteristic view of the optical member of a comparison object. (A) is a schematic diagram which shows the light distribution state by the optical member which comprises the same as the above, (b) is a schematic diagram which shows the light distribution state by the optical member of a comparison object. (A) and (b) are the same luminance distribution diagrams.

  Hereinafter, an embodiment of a lighting fixture will be described with reference to the drawings. This luminaire is a so-called ceiling light, and is used to illuminate the entire room by being directly attached to the ceiling.

(Embodiment 1)
FIG. 1 is an exploded perspective view illustrating an example of a lighting fixture A according to the first embodiment. The lighting fixture A includes a fixture main body 1 formed in a disk shape and a power feeding unit 5 disposed at a central portion of the fixture main body 1. And the light emitting unit 2 arranged in an annular shape around the power feeding unit 5. The luminaire A is disposed in front of the light emitting unit 2, the optical member 3 that controls the light distribution of the light emitted from the light emitting unit 2, the front of the optical member 3, and the light distribution control by the optical member 3. And a diffusing member 4 for diffusing the light from the light emitting unit 2.

  The light emitting unit 2 includes a plurality of (four in FIG. 1) mounting substrates 21 that are curved in an arc shape, and a plurality of LEDs (light emitting diodes) 22 are provided on one surface (the upper surface in FIG. 1) of each mounting substrate 21. Are mounted in two rows in the width direction of the mounting substrate 21 and along the longitudinal direction of the mounting substrate 21. As shown in FIG. 1, these mounting boards 21 are arranged in an annular shape around a power feeding unit 5 arranged in the center of the instrument body 1, and are attached to the instrument body 1 using, for example, mounting screws (not shown). It is attached.

  The power feeding unit 5 generates lighting power for lighting the plurality of LEDs 22 mounted on the mounting board 21, and supplies the generated lighting power to each mounting board 21 via an electric wire (not shown). Specifically, the power supply unit 5 converts an AC voltage supplied from an external power source (not shown) into a DC voltage having a desired voltage value (a voltage value necessary for lighting the LED 22), and converts the converted DC voltage. A voltage is supplied to each mounting substrate 21. In addition, this electric power feeding part 5 is attached to the instrument main body 1 using an attachment screw (not shown), for example.

  The diffusing member 4 is formed in a dome shape whose one surface (the lower surface in FIG. 1) is opened with, for example, milky white acrylic resin to which a light diffusing agent is added, and is detachably attached to the instrument body 1 from the front of the optical member 3. .

  The optical member 3 is made of a light-transmitting material (for example, acrylic resin, polycarbonate resin, glass, etc.), and has a disc-shaped main body 31 having a circular opening 31a formed at the center. On one surface (the upper surface in FIG. 1) of the main body 31, as shown in FIGS. 1 and 3, lens portions 32 and 33 that are convex forward (upper in FIG. 3) are provided in two rows concentrically. ing. Here, in the present embodiment, the lens unit 32 is provided in a form corresponding to the LED 22 mounted on the inner side (the power feeding unit 5 side) of each mounting substrate 21, and the outer side (the side opposite to the power feeding unit 5) of each mounting substrate 21. The lens portion 33 is provided in a form corresponding to the LED 22 mounted on the). Hereinafter, the lens portions 32 and 33 will be described in detail.

  The lens part 32 is formed in a convex curved surface that is convex forward (upper side in FIG. 3), and a storage concave part 32c for arranging the corresponding LED 22 is provided on the rear side (lower side in FIG. 3). . Further, the end of the lens unit 32 on the power supply unit 5 side (left side in FIG. 3) in the direction connecting the lens unit 32 and the power supply unit 5 in the assembled state (first direction) (left-right direction in FIG. 3). Is provided with a first convex portion 32a, and the light from the LED 22 incident on the first convex portion 32a is distributed toward the central portion side of the diffusion member 4 disposed in front. The Further, a second convex portion 32b is provided at an end portion of the lens portion 32 on the opposite side (right side in FIG. 3) of the lens portion 32 in the first direction, and the second convex portion 32b. The light from the LED 22 incident on the light is distributed toward the outer edge of the diffusion member 4 disposed in front.

  Similarly, the lens portion 33 is formed in a convex curved surface that is convex forward (upper side in FIG. 3), and a rear side (lower side in FIG. 3) is provided with a storage concave portion 33c for disposing the corresponding LED 22. Yes. In addition, a first convex portion 33a is provided at an end of the lens portion 33 on the power feeding unit 5 side (left side in FIG. 3) in the first direction, and is incident on the first convex portion 33a. The light emitted from the LED 22 is distributed toward the center of the diffusion member 4 disposed in front. Further, a second convex portion 33b is provided at an end portion of the lens portion 33 on the opposite side to the power feeding portion 5 (right side in FIG. 3) in the first direction, and the second convex portion 33b. The light from the LED 22 incident on the light is distributed toward the outer edge of the diffusion member 4 disposed in front. In addition, this optical member 3 is attached to the instrument main body 1 using an attachment screw (not shown), for example. The light distribution characteristics of the lens portions 32 and 33 will be described later.

  Next, the assembly procedure of the lighting fixture A will be described. The operator attaches the power feeding unit 5 to the center of the instrument body 1 and attaches the mounting substrate 21 to one surface (the upper surface in FIG. 1) of the instrument body 1, and then between the power feeding unit 5 and each mounting substrate 21. Are electrically connected using an electric wire (not shown). After that, the operator attaches the optical member 3 to the fixture body 1 from the front so as to cover each mounting substrate 21, and then attaches the diffusion member 4 to the fixture body 1 from the front, thereby completing the assembly of the lighting fixture A. (See FIGS. 2A and 2B).

  And by attaching the hook connector 6 (refer FIG.2 (b)) integrally provided in the rear surface side of the electric power feeding part 5 to the hook ceiling (not shown) provided in the ceiling, the lighting fixture A of FIG. Construction is complete.

  Next, the light distribution characteristics of the lens portions 32 and 33 of the optical member 3 will be described. 4A and 4B are light distribution characteristics diagrams of the lens unit 32. Light emitted from the LED 22 is emitted radially from the emission surface 32d of the lens unit 32. FIG. In particular, the light emitted from the first convex portion 32a is distributed toward the left side in FIG. 4A, that is, toward the central portion of the diffusing member 4, and the light emitted from the second convex portion 32b. Is distributed toward the right side in FIG. 4A, that is, toward the outer edge of the diffusing member 4.

  On the other hand, FIGS. 5A and 5B are light distribution characteristics diagrams of the lens unit 33. Similarly, light emitted from the LED 22 is emitted radially from the emission surface 33d of the lens unit 33. FIG. In particular, the light emitted from the first convex portion 33a is distributed toward the left side in FIG. 5A, that is, toward the central portion of the diffusing member 4, and the light emitted from the second convex portion 33b. Is distributed toward the right side in FIG. 5A, that is, toward the outer edge of the diffusing member 4.

  Here, when FIG. 4B is compared with FIG. 5B, the lens portion 32 is in relation to the optical axis of the LED 22 (the vertical axis in FIGS. 4B and 5B). The emission angle of the main beam having the strongest light intensity among the light emitted from the first convex portion 32a is the main beam having the strongest light intensity among the light emitted from the first convex portion 33a of the lens portion 33. It is larger than the emission angle. For this reason, the main beam emitted from the first convex portion 32a of the lens portion 32 is arranged closer to the center of the diffusing member 4 than the main beam emitted from the first convex portion 33a of the lens portion 33. You can see that it is illuminated. It can also be seen that the main beam emitted from the first convex portion 32a of the lens portion 32 has a higher light intensity than the main beam emitted from the first convex portion 33a of the lens portion 33.

  Further, the emission angle of the main beam having the highest light intensity among the light emitted from the second convex portion 32 b of the lens portion 32 with respect to the optical axis is emitted from the second convex portion 33 b of the lens portion 33. It can be seen that the angle is substantially the same as the emission angle of the main beam having the highest light intensity. Further, it can be seen that the main beam emitted from the second convex portion 33b of the lens portion 33 has a light intensity stronger than that of the main beam emitted from the second convex portion 32b of the lens portion 32. Here, in the present embodiment, the main beam emitted from the first convex portions 32a and 33a is the first main beam, and the main beam emitted from the second convex portions 32b and 33b is the second main beam. It is.

  Thus, according to the present embodiment, the light emitted from the LED 22 by the first convex portions 32a and 33a can be distributed toward the center of the diffusing member 4, and further, the second convex portions 32b and 33b can distribute the light. Light emitted from the LED 22 can be distributed toward the outer edge of the diffusing member 4. Further, since light emitted from other parts of the lens portions 32 and 33 is distributed between the central portion and the outer edge portion of the diffusing member 4, the light emitted from the LED 22 is distributed over the entire surface of the diffusing member 4. Can distribute light. As a result, it can suppress that the center part and outer edge part of the diffusion member 4 become dark, and can provide the lighting fixture A which improved the appearance.

  In the above-described embodiment, the case where the lens portions 32 and 33 are asymmetrical and the shapes of the lens portions 32 and 33 are different from each other has been described. For example, as shown in FIG. The part 34 may be sufficient. In this case, all the first main beams emitted from the first convex portions 34a of the lens portions 34 have the same emission angle, and all the second main beams emitted from the second convex portions 34b are the same. The emission angle. As a result, the luminance unevenness appearing on the diffusing member 4 can be reduced, and the luminaire A having improved appearance can be provided. In this case, the light distribution characteristics of the lens units 34 are as shown in FIG.

  Moreover, as shown to Fig.7 (a) (b), the symmetrical lens part 35 may be sufficient with respect to the optical axis P1 of LED22. In this case, the emission angle of the first main beam emitted from the first convex portion 35a of each lens portion 35 and the second main beam emitted from the second convex portion 35b with respect to the optical axis P1. Are set at the same angle. As a result, the light distribution design can be easily performed, and the luminance of the light emitted from the central portion of the lens portion 35 is the highest, so that both sides (that is, the first and second convex portions 35a and 35b side) are provided. Since the luminance decreases monotonously, the luminance distribution in the diffusing member 4 becomes smooth and the appearance is improved.

  Furthermore, as shown in FIG. 8A, the exit surface 36d and the entrance surface 36e of the lens portion 36 may be subjected to diffusion processing (for example, painting, blasting, unevenness, etc.), and in this case, the luminance distribution in the diffusion member 4 Since the change of becomes smoother, the appearance is further improved. Note that the diffusion process may be performed on both the exit surface 36d and the entrance surface 36e as described above, or may be performed only on either the exit surface 36d or the entrance surface 36e.

  Further, since the vicinity of the optical axis P1 of the LED 22 is higher in luminance than other parts, light is increased by increasing the diffusibility in the vicinity of the optical axis P1 on the exit surface 36d and the entrance surface 36e of the lens unit 36 as compared with other parts. The brightness near the axis P1 may be lowered (see FIG. 8B). In this case, the luminance in the vicinity of the optical axis P1 of the LED 22 can be kept low, and as a result, the luminance distribution in the diffusing member 4 becomes smoother, which further improves the appearance.

  In this embodiment, the lens portions are provided in two rows. However, the lens portions may be provided in, for example, one row, three or more rows, and may be provided as appropriate in a form corresponding to the LED. Further, the shape of the instrument body 1 is not limited to this embodiment, and may be, for example, a rectangular shape or other shapes.

  Furthermore, in this embodiment, by making the shape of each lens part the same, the emission angle of the first main beam emitted from the first convex part and the second main part emitted from the second convex part. The exit angles of the beams are the same between the lens portions, but the shapes of the lens portions are not necessarily the same, and the exit angles of the first main beam and the second main beam are the same. Any shape that has the same angle between the lens portions may be used. Further, in the present embodiment, the shape of each lens part is symmetrical with respect to the optical axis, so that the emission angle of the first main beam emitted from the first convex part and the second convex part are emitted. The exit angles of the second main beam are equal to each other, but the shape of each lens portion is not necessarily symmetrical, and the exit angle of the first main beam and the second main beam are not necessarily symmetrical. Any shape may be used as long as the emission angle is the same.

(Embodiment 2)
Embodiment 2 of the lighting fixture A will be described with reference to FIGS. In addition, about the basic structure of the lighting fixture A, it is the same as that of Embodiment 1, and refer FIG. 1 as needed.

  FIG. 9 is a schematic diagram showing a light distribution state of the lighting fixture A of the present embodiment. One (right side in FIG. 9) LED 22 is arranged on the circumference of the first circle set to the radius r1, and the other (left side in FIG. 9) LED 22 is concentric with the first circle. And a radius of the second circle set to r2 (r2> r1) larger than r1. Note that c1 in FIG. 9 is the center of the first circle and the second circle. Here, a first LED is constituted by the LEDs 22 arranged on the circumference of the first circle, and a second LED is constituted by the LEDs 22 arranged on the circumference of the second circle.

  Further, a disk-shaped optical member 3 (see FIG. 1) is disposed in front of these LEDs 22 as in the first embodiment, and a lens portion 38 that is convex forward at a portion corresponding to each LED 22. (See FIG. 10A). Further, in each lens unit 38, a first convex portion 38a is provided on one end side (right side in FIG. 10A) similarly to the first embodiment, and the other end side (in FIG. 10A). On the left side) is provided with a second convex portion 38b. Here, a first lens unit is configured by the lens unit 38 corresponding to the first LED, and a second lens unit is configured by the lens unit 38 corresponding to the second LED.

  In addition, the angle θ1 in FIG. 9 indicates the first main beam b1 having the highest light intensity among the light emitted from the first convex portion of the first lens portion, and the optical axis of the first LED. The angle θ2 is an angle between the first main beam b2 having the highest light intensity of the light emitted from the first convex portion of the second lens portion and the second LED. This is the angle formed with the optical axis P4. Further, a point a1 in FIG. 9 is an intersection of the first main beam b1 and the inner surface of the diffusing member 4, and a point a2 is an intersection of the first main beam b2 and the inner surface of the diffusing member 4. It is an intersection. Further, the distance L1 in FIG. 9 is a distance from the point a1 to the first line P2 passing through the centers c1 of the first circle and the second circle and parallel to the optical axis P3, and the distance L2 is The distance from the point a2 to the first line P2.

Here, in this embodiment, the angles θ1 and θ2 of the first main beams b1 and b2 emitted from the first convex portions of the first lens portion and the second lens portion are the following (1) to (4). ) Is set so as to satisfy the equation, thereby increasing the light distribution amount near the center of the diffusing member 4 (in the vicinity of the first line P2). This will be specifically described below.
2 × r1 ≧ r2 (1)
3 × L2 ≦ L1 (2)
r1 ≧ L1 (3)
L2 ≧ 0 (4)

  10A and 10B are light distribution characteristics diagrams of the optical member 3 of the present embodiment. In this optical member 3, the first lens portion and the second lens portion are composed of the same lens portion 38, and the first main beams b1, b2 emitted from the first convex portion 38a and the optical axes P3, P4 Is set to θ1 = θ2 = 65 °. On the other hand, FIGS. 10C and 10D are light distribution characteristics diagrams of the optical member 3 to be compared. The optical member 3 also includes the first lens portion 37 and the second lens portion that are formed of the same lens portion 37, and the first main beams b1 and b2 emitted from the first convex portion 37a and the optical axes P3 and P4. Is set to θ1 = θ2 = 69 °.

  Here, FIG. 11B is a schematic diagram showing a light distribution state by the lens unit 37 to be compared. In this case, r1 = 155 mm, r2 = 190 mm, L1 = 102.74 mm, and L2 = 52.37 mm. Has been. When these values are applied to the above formulas (1) to (4), 2 × r1 = 2 × 155 = 310 mm> r2 (= 190 mm), r1 (= 155 mm)> L1 (= 102.74 mm), L2 = 52.37 mm> 0, and the expressions (1), (3), and (4) are satisfied. However, 3 × L2 = 3 × 52.37 = 157.11 mm> L1 (= 102.74 mm), and the formula (2) is not satisfied, and in this case, the central portion of the diffusing member 4 is slightly dark. .

  On the other hand, FIG. 11A is a schematic diagram showing a light distribution state by the lens unit 38 of the present embodiment. In this case, r1 = 125 mm, r2 = 190 mm, L1 = 70.99 mm, and L2 = 13.45 mm. Has been. When these values are applied to the above formulas (1) to (4), 2 × r1 = 2 × 125 = 250 mm> r2 (= 190 mm), 3 × L2 = 3 × 13.45 = 40.35 mm <L1 (= 70.99 mm), r1 (= 125 mm)> L1 (= 70.99 mm), L2 = 13.45 mm> 0, and all of the expressions (1) to (4) are satisfied. Further, it can be seen that the first main beams b1 and b2 are irradiated toward the center of the diffusing member 4 as compared with that shown in FIG.

  That is, by setting r1, r2, L1, L2, θ1, and θ2 so as to satisfy the expressions (1) to (4), the center of the diffusing member 4 is set as shown in FIGS. The light distribution to the vicinity can be increased. Thereby, the brightness | luminance uniformity of the diffusion member 4 can improve, and the lighting fixture A which improved the appearance can be provided.

  In the present embodiment, the first lens portion and the second lens portion have the same shape (lens portion 38), but if the amount of light distribution near the center of the diffusing member 4 can be increased, The shape may be different and is not limited to this embodiment. Further, the values of r1, r2, L1, L2, θ1, and θ2 are examples, and other values may be used as long as they satisfy all of the above expressions (1) to (4). Similarly, the luminance of the diffusing member 4 It is possible to provide the lighting fixture A with improved uniformity and improved appearance.

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Light emission part 3 Optical member 4 Diffusion member 5 Feed part 22 LED
32, 33 Lens portions 32a, 33a First convex portions 32b, 33b Second convex portion A Lighting fixture

Claims (6)

An instrument body;
A power feeding unit disposed in the center of the instrument body;
A plurality of LEDs arranged in an annular shape around the power supply unit and lit by power supplied from the power supply unit;
An optical member that is disposed in front of the plurality of LEDs and controls light distribution of light emitted from the plurality of LEDs;
A diffusion member that is disposed in front of the optical member and diffuses light whose light distribution is controlled by the optical member;
The optical member is provided with a lens portion that protrudes forward at a portion corresponding to each of the plurality of LEDs,
Each of the LEDs is a first LED arranged on a circumference of a first circle, or a circumference of a second circle that is concentric with the first circle and has a radius that is larger than the first circle. Any of the second LEDs arranged,
Each of the lens portions is either a first lens portion provided at a portion corresponding to the first LED or a second lens portion provided at a portion corresponding to the second LED. ,
Each of the lens portions distributes light from the corresponding LED toward the center side of the diffusing member at an end portion on the power feeding portion side in the first direction connecting the lens portion and the power feeding portion. A second protrusion that distributes light from the corresponding LED toward the outer edge of the diffusing member at an end opposite to the power feeding portion in the first direction. Convex is provided ,
Each of the surface of the 1st convex part and the surface of the 2nd convex part is a curved surface, The lighting fixture characterized by the above-mentioned.   Each of the lens units has an emission angle of the first main beam having the highest light intensity among the light emitted from the first convex part and a light intensity of the light emitted from the second convex part. The illuminating device according to claim 1, wherein an emission angle of the strongest second main beam is set to the same angle as each of the other lens portions.   Each of the lens portions has an emission angle of the first main beam having the highest light intensity among the light emitted from the first convex portion with respect to the optical axis of the corresponding LED, and the second 3. The lighting apparatus according to claim 1, wherein an angle of emission of the second main beam having the highest light intensity among the light emitted from the convex portion is set to the same angle. The first circle has a radius set to r1, and the second circle has a radius set to r2 larger than r1,
The angle formed between the first main beam having the highest light intensity among the light emitted from the first convex portion of the first lens portion and the optical axis of the first LED is θ1, and the first lens L1 is a distance from the intersection of the first main beam and the diffusing member to the first line parallel to the optical axis through the center of the first circle and the second circle,
The angle formed between the first main beam having the highest light intensity among the light emitted from the first convex portion of the second lens portion and the optical axis of the second LED is θ2, and the second lens When the distance from the intersection of the first main beam of the part and the diffusion member to the first line is L2,
The angles θ1 and θ2 are set so that the first lens unit and the second lens unit satisfy 2 × r1 ≧ r2, 3 × L2 ≦ L1, r1 ≧ L1, and L2 ≧ 0. The lighting fixture of any one of Claims 1-3 characterized by the above-mentioned.   5. The luminaire according to claim 1, wherein each of the lens units is subjected to a diffusion treatment on at least one of an incident surface and an exit surface.   5. The luminaire according to claim 1, wherein each of the lens portions has enhanced diffusivity in the vicinity of the optical axis of the corresponding LED as compared with other portions.