JP7312963B2 - lighting equipment - Google Patents

Description

The present invention relates to an outdoor lighting device.

2. Description of the Related Art Conventionally, outdoor lighting devices such as road lights or street lights are known (see Patent Document 1).

JP 2017-139243 A

By the way, an additional member (for example, a device having a function other than lighting) may be attached to the lighting device. In this case, it is desired that the member does not interfere with the distribution of illumination light.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an illumination device including an additional member while suppressing the influence on the light distribution of illumination light.

A lighting device according to an aspect of the present invention includes a support, a lighting device provided on the support, and a member provided on the support below the lighting device, and the member is provided in a portion where light distribution of light emitted from the lighting device becomes a valley in a plan view from a direction in which the support extends.

According to one aspect of the present invention, it is possible to realize a lighting device including an additional member while suppressing the influence on the light distribution of illumination light.

FIG. 1 is a diagram showing the configuration of a lighting device according to an embodiment. FIG. 2 is an enlarged view showing the surroundings of the lamp of the lighting device according to the embodiment. FIG. 3 is a diagram showing the illuminance distribution of the lighting device according to the embodiment. FIG. 4 is a diagram for explaining installation positions of antennas in the lighting device according to the embodiment. FIG. 5 is an enlarged view showing the periphery of the lamp of the lighting device according to Modification 1 of the embodiment. FIG. 6 is an enlarged view showing the surroundings of the lamp of the lighting device according to Modification 2 of the embodiment. FIG. 7 is a diagram for explaining installation positions of antennas in a lighting device according to Modification 2 of the embodiment. FIG. 8 is an enlarged view showing the surroundings of the lamp of the lighting device according to Modification 3 of the embodiment. FIG. 9 is a diagram showing an illuminance distribution of a lighting device according to Modification 3 of the embodiment. FIG. 10 is a diagram for explaining installation positions of antennas in a lighting device according to Modification 3 of the embodiment.

Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that the embodiments described below are all comprehensive or specific examples. Numerical values, shapes, materials, constituent elements, arrangement positions of constituent elements, connection forms, and the like shown in the following embodiments are examples, and are not intended to limit the present invention.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code|symbol is attached|subjected with respect to substantially the same structure, and the overlapping description may be abbreviate|omitted or simplified.

Further, in this specification, terms indicating the relationship between elements such as parallel, terms indicating the shapes of elements such as rectangles, numerical values, and numerical ranges are not expressions that express only strict meanings, but are expressions that are substantially equivalent ranges, for example, expressions that include a difference of about several percent.

(Embodiment)
[1. Configuration of lighting device]
A configuration of lighting device 10 according to the present embodiment will be described. FIG. 1 is a diagram showing the configuration of a lighting device 10 according to this embodiment. FIG. 2 is an enlarged view showing the periphery of the lamp 20 of the lighting device 10 according to the present embodiment. FIG. 2 is an enlarged view of the dashed line area R in FIG.

As shown in FIGS. 1 and 2 , the lighting device 10 includes a lamp 20 , a wireless communication device 30 and a support 40 . The lighting devices 10 are street lights, road lights, security lights, or the like, and are installed, for example, at predetermined intervals along roads or the like. The lighting device 10 is installed, for example, on the ground 50 (an example of an installation surface). Further, the ground 50 is an irradiation surface onto which the illumination light L is irradiated.

The lamp 20 is a lighting fixture, and has a light source section 21 that emits illumination light L and a globe 22 that covers the light source section 21 . As shown in FIG. 2, the lamp 20 has a plurality of light source units 21, and has four light source units 21 in the present embodiment. For example, the four light source units 21 are arranged so as to surround the support pillar 40 when viewed from the direction in which the support 40 extends. The four light source units 21 are arranged, for example, at rotationally symmetrical positions about the column 40 . The four light source units 21 are arranged, for example, so as to illuminate the entire periphery of the support 40 when viewed from the direction in which the support 40 extends. Note that the number and positions of the light source units 21 are not particularly limited.

The light source unit 21 is, for example, a light emitting module in which a plurality of LED elements are mounted on a substrate. The LED element is an LED element that emits white light (specifically, bulb color or warm white) realized by a blue LED chip and a phosphor-containing resin (sealing member) that seals the blue LED chip. The light source unit 21 may be a light emitting module using a semiconductor light emitting device such as a semiconductor laser, or a solid state light emitting device such as an organic EL (Electro Luminescence) or an inorganic EL.

The globe 22 is a translucent optical member that transmits light from the light source section 21 . Glove 22 may be a transparent matte glove or an opalescent glove. The globe 22 is made of, for example, a resin such as polycarbonate or glass.

In addition, although not shown, the lamp 20 has a control section for controlling light emission of the light source section 21, a power supply circuit for supplying power to the light source section 21, and the like. The control unit is implemented by, for example, a microcomputer, but may be implemented by a processor. Further, the power supply circuit is configured, for example, to convert electric power (for example, AC power) from a commercial power supply into electric power (for example, DC power) for causing the light source unit 21 to emit light.

The radio communication device 30 has an antenna 31 and an antenna base 32 . Antenna 31 is an antenna connected to antenna base 32 for wireless communication. Two (a pair of) antennas 31 are provided, and at least one is arranged to extend from the antenna base 32 toward the lamp 20 . In this embodiment, each of the pair of antennas 31 is arranged to extend from the antenna base 32 toward the lamp 20 . A pair of antennas 31 are arranged, for example, so as to extend in a direction parallel to the column 40 . The antenna 31 is, for example, an omnidirectional antenna, but is not limited to this. The antenna 31 is an example of a member (for example, equipment having a function other than lighting).

The antenna base 32 has a circuit or the like made up of electronic components for wireless communication. The circuitry includes transmitting circuitry for transmitting radio signals and receiving circuitry for receiving radio signals. Moreover, in the present embodiment, the shape of the antenna base 32 is cylindrical, but the shape is not limited to this.

The wireless communication device 30 is installed at a high position on the pillar 40 from the viewpoint of improving the reception condition of radio waves. In this embodiment, the wireless communication device 30 is installed directly below the lamp 20 . In this case, the antenna 31 interferes with the passage of the illumination light L, which affects the light distribution on the ground 50 . Therefore, the present embodiment is characterized by the position where the antenna 31 is installed. Details of the installation position of the antenna 31 will be described later. The distance (shortest distance) between the lamp 20 and the wireless communication device 30 may be, for example, 1 m or less, or 50 cm or less. The distance between the lamp 20 and the wireless communication device 30 is appropriately determined depending on the types of the antenna 31 and the lamp 20, and the like. Also, the antenna 31 is installed, for example, at a position higher than the height that a person (for example, an adult) can reach. The height of the antenna 31 from the ground (for example, the distance from the ground 50 to the end of the antenna 31 on the ground 50 side) may be 2.5 m or more, or 3.5 m or more.

The wireless communication device 30 does not have a power supply circuit, for example. The wireless communication device 30 is connected to, for example, a power supply circuit for the light source section 21 . That is, the light source unit 21 and the wireless communication device 30 may be supplied with power from a common power supply circuit. Accordingly, the wireless communication device 30 can be operated without preparing a dedicated power supply circuit for the wireless communication device 30 .

The wireless communication device 30 may be attached to the post 40 in advance (for example, may be attached at the manufacturing stage of the lighting device 10), or may be attached to the existing lighting device 10 afterward. For example, the wireless communication device 30 has a structure that can be attached to the support 40 and may be detachably attached to the support 40 . The wireless communication device 30 is an example of a component having functions other than lighting.

The post 40 is a columnar member and a support (e.g., a pole) that supports the lamp 20 and the wireless communication device 30 . In the present embodiment, the post 40 supports the lamp 20 at the center position of the lamp 20 in plan view. The support 40 is fixed in a state where, for example, part of the support 40 is embedded in the ground. A plan view means, for example, viewing from the direction in which the support 40 extends (for example, the vertical direction).

[2. Antenna installation position]
First, the illuminance distribution of the illumination light L in the illumination device 10 as described above will be described with reference to FIG. FIG. 3 is a diagram showing the illuminance distribution (horizontal plane illuminance distribution) of lighting device 10 according to the present embodiment. Note that the center position in FIG. 3 corresponds to the position of the strut 40 in plan view. Numerical values shown in FIG. 3 are illuminance (unit: lux). The illuminance distribution shown in FIG. 3 is the result of measurement when the mounting height of the lamp 20 is 4.5 m, and the four light source units 21 are arranged vertically and horizontally when viewed from the center of the lamp 20 in plan view. Moreover, in FIG. 3, a scale (straight line) is illustrated every 5 m. That is, FIG. 3 shows the illuminance distribution in an area of 40 m×40 m.

As shown in FIG. 3, the illuminance distribution of the illumination light L emitted from the illumination device 10 is not concentric but distorted. In FIG. 3, the illuminance distribution is concave (light distribution is concave) in the direction of the arrow. This is caused by the arrangement of the light source section 21 (specifically, the arrangement of the LED elements) in the lamp 20 . A portion where the illuminance distribution is concave is an example of a portion (region) that becomes a valley of the light distribution of the light emitted from the light source section 21 . The trough of the light distribution is a region where the illuminance is relatively low in the irradiation region of the illumination light L. As shown in FIG.

In FIG. 3, valleys V1 to V4 (areas surrounded by dashed lines in FIG. 3) are illustrated as valleys of the light distribution. The valleys V1 and V4 are formed so as to sandwich the support 40 therebetween. Moreover, the valleys V2 and V3 are formed so as to sandwich the support 40 therebetween. At least one of the valleys V1 and V2 is an example of a first valley, and at least one of the corresponding valleys V4 and V3 is an example of a second valley.

The installation position of the antenna in such a lighting device 10 will be described below with reference to FIG. 4 . FIG. 4 is a diagram for explaining the installation position of antenna 31 in lighting device 10 according to the present embodiment. FIG. 4 is a schematic diagram of the lamp 20 viewed from below. 4, illustration of the globe 22 and the antenna base 32 is omitted.

As shown in FIG. 4, each of the two antennas 31 is arranged at a position not overlapping with each of the four light source units 21 when the lamp 20 is viewed from below, for example. Each of the two antennas 31 is arranged, for example, inside a virtual line C connecting each of the plurality of light source units 21 . The virtual line C passes through each of the plurality of light source units 21 in plan view. In the present embodiment, the virtual line C is a curved line connecting the centers of the plurality of light source units 21 in plan view. Each of the two antennas 31 is provided inside the curve.

The two antennas 31 block the illumination light L emitted from the light source unit 21 by being installed. That is, the illuminance on the ground 50 (irradiated surface) decreases. In the present embodiment, as described above, each of the two antennas 31 becomes a trough of the light distribution of the illumination light L emitted from the light source unit 21 (for example, any one of the troughs V1 to V4 in plan view).

A portion that becomes a trough of the light distribution is a region in which the illuminance is lower than that of the other portions in the irradiation region. Specifically, the portion that becomes the trough of the light distribution is, in a planar view, an annular region that is at the same distance from the support 40 and includes a position where the illuminance is lower than other positions (for example, a position where the illuminance is less than or equal to half the maximum illuminance in the annular region). The antenna 31 blocks part of the light irradiated to the valley of the light distribution by being arranged in the valley of the light distribution, but since the illuminance of the part of the light is originally low, it is possible to effectively suppress the decrease in the illuminance of the illumination light L by the antenna 31. - 特許庁For example, the antenna 31 can suppress a decrease in the illuminance of the illumination light L compared to the case where the antenna 31 is arranged in a portion other than the valley of the light distribution. The antenna 31 is arranged within an irradiation area of the illumination light L emitted from the light source unit 21 and in an area having a relatively low illuminance within the irradiation area.

The fact that the antenna 31 is provided in the portion where the light distribution is trough means, for example, that the antenna 31 is arranged in a region that overlaps with the light distribution trough in plan view. The antenna 31 is arranged, for example, so as to overlap a region of the irradiation surface irradiated with the illumination light L having a low illuminance in plan view. The antenna 31 is provided, for example, in a region overlapping with the lamp 20 in the valley region of the light distribution in plan view.

Note that the antenna 31 provided in a portion that becomes a trough of the light distribution may mean, for example, that the antenna 31 is arranged so as to overlap a low-luminance region (for example, a region having a luminance equal to or less than half the maximum luminance) of the globe 22 (an example of the light-emitting surface) of the lamp 20 in plan view.

The virtual line C is not limited to a line connecting the centers of the plurality of light source units 21 in plan view, and may be a line connecting arbitrary positions of the plurality of light source units 21 in plan view. The virtual line C may be, for example, a line connecting the innermost positions (for example, the positions closest to the support 40) of each of the plurality of light source units 21 in plan view. Also, the virtual line C is not limited to being a curved line. The imaginary line C may be at least partially straight in a plan view, may be a rectangular line, or may be a line of another shape.

[3. effects, etc.]
As described above, lighting device 10 according to the present embodiment includes support 40, lamp 20 provided on support 40 and having light source unit 21, and antenna 31 (an example of a member) provided on support 40 below lamp 20. The antenna 31 is provided at a portion (for example, the valleys V1 to V4) where the light distribution of the light emitted from the light source section 21 becomes a valley in a plan view from the direction in which the column 40 extends.

Accordingly, even when the antenna 31 is arranged below the lamp 20, the influence of the antenna 31 on the illumination light L from the light source section 21 can be suppressed. By arranging the antenna 31 at the above position, the illuminance in the trough portion of the light distribution in the illuminance distribution is reduced, but the illumination light L in the other portion (bright portion) is not blocked (not affected) by the antenna 31, so it is possible to suppress the decrease in the average illuminance in the irradiation area. Therefore, it is possible to provide the illumination device 10 including a member having a function other than illumination while suppressing the influence of the illumination light L from the light source unit 21 on the light distribution.

The lamp 20 also has a plurality of light source units 21 arranged to surround the support 40 in a plan view. The antenna 31 is provided inside a virtual line C (an example of a center line) connecting the plurality of light source units 21 in a plan view.

Thereby, the antenna 31 is arranged inside the virtual line C in plan view. By arranging the antenna 31 on the inner side in plan view, it is possible to further suppress the illumination light L from being blocked by the antenna 31 . Therefore, the decrease in the average illuminance of the illumination light L can be further suppressed.

Also, the virtual line passes through the center of each of the plurality of light source units 21 in plan view.

Thereby, the antenna 31 is arranged at a position closer to the column 40 in plan view. By arranging the antenna 31 at a position close to the post 40 , it is possible to further prevent the illumination light L from being blocked by the antenna 31 . Therefore, the decrease in the average illuminance of the illumination light L can be further suppressed.

A member (for example, a device having a function other than lighting) is the antenna 31 .

Thereby, a communication function (for example, a function as a device for transferring radio waves) can be added to the lighting device 10 as a function other than illumination.

(Modification 1 of Embodiment)
A lighting device 100 according to this modification will be described with reference to FIG. FIG. 5 is an enlarged view showing the periphery of the lamp 20 of the lighting device 100 according to this modification. In this modified example, differences from the embodiment will be mainly described. A lighting device 100 according to this modification differs from the embodiment in the shape of the attached wireless communication device. 5 is an enlarged view of a region of lighting device 100 corresponding to dashed line region R in FIG.

As shown in FIG. 5, wireless communication device 130 has antennas 131 a to 131 d and antenna base 132 .

The antennas 131 a and 131 c are arranged to extend from the antenna base 132 toward the lamp 20 . Further, the antennas 131a and 131c are arranged so as to sandwich the support 40 therebetween. The antenna 131a, the support 40, and the antenna 131c are, for example, arranged on a straight line in this order in plan view.

The antennas 131b and 131d are arranged so as to extend from the antenna base 132 toward the side opposite to the lamp 20 . The antennas 131b and 131d are arranged so as to sandwich the support 40 therebetween. The antenna 131b, the column 40, and the antenna 131d are arranged in this order on a straight line in plan view, for example.

Also, the antennas 131a and 131b are arranged at overlapping positions in a plan view to form a pair of antennas. Also, the antennas 131c and 131d are arranged at overlapping positions in a plan view to constitute a pair of antennas. Wireless communication device 130 has two pairs of antennas arranged to sandwich support 40 in plan view. As a result, the support 40 is less likely to affect the state of reception of radio waves. In addition, since the transmission and reception ranges of the paired antennas are equal, good communication can be performed.

The antenna base 132 is a plate-like member attached to the support 40 and supporting the antennas 131a to 131d. The antenna base 132 is, for example, flat. The antenna base 132 is attached to the pillar 40 so that the main surface 132a of the antenna base 132 faces outward in plan view. In other words, the antennas 131a to 131d are arranged to extend from the side surfaces of the antenna base 132 (for example, the side surface 132b and the side surface opposite to the side surface 132b). The planar shape of the side surface is, for example, a rectangular shape, but may be oval or the like.

The antenna base 132 extends in a predetermined direction in plan view. The antenna base 132 is attached to the post 40 so as to extend in the direction connecting the valleys V1 and V4 shown in FIG. 3, for example.

Note that the antenna base 132 is not limited to extending in a straight line in plan view. The antenna bases 132 may extend in different directions, such as an L shape, in a plan view.

As described above, lighting device 100 according to the present embodiment further includes plate-shaped antenna base 132 that supports antenna 31 . The antenna base 132 is attached to the pillar 40 so that the main surface 132a faces outward in plan view.

As a result, the influence of the antenna mount 132 on the light distribution can be suppressed as compared with the case where the shape of the antenna mount 132 is cylindrical.

In addition, the valley of the light distribution includes a valley V1 (an example of a first valley) and a valley V4 (an example of a second valley) located on the opposite side of the column 40 in plan view. The antenna base 132 is attached to the support 40 so as to extend in a direction connecting the valleys V1 and V2 in plan view.

As a result, the influence of the antenna base 132 on the light distribution can be further suppressed.

Further, the antenna includes an antenna 131a (an example of a first antenna) and an antenna 131c (an example of a second antenna) provided to extend from the antenna base 132 toward the lamp 20 . The antennas 131a and 131c are provided so as to sandwich the column 40 therebetween.

As a result, the wireless communication device 130 is less likely to be affected by the radio wave transmission/reception state of the support 40 . Therefore, it is possible to realize the illumination device 100 including the wireless communication device 130 in which deterioration of wireless communication performance due to the support 40 is suppressed.

(Modification 2 of Embodiment)
A lighting device 200 according to this modification will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 is an enlarged view showing the periphery of the lamp 220 of the lighting device 200 according to this modification. In this modified example, differences from the embodiment will be mainly described. A lighting device 200 according to this modified example differs from the embodiment in the lighting fixture and the strut. 6, illustration of the wireless communication device 30 is omitted. 6 is an enlarged view of a region of lighting device 200 corresponding to dashed line region R in FIG.

As shown in FIG. 6 , lighting device 200 includes lamp 220 , wireless communication device, and support 240 . The lamp 220 has a light source section 221 and a globe 222 covering the light source section 221 . The strut 240 has a support portion 241 divided into three at its tip. The support portion 241 supports the outer peripheral portion of the lamp 220 . In addition, the tip of the support|pillar 240 should just be divided into two or more. Note that the wireless communication device may be the wireless communication device 30 according to the first embodiment, or may be the wireless communication device 130 according to the first modification.

In such a lighting device 200, even if the light distribution (illuminance distribution) of the lamp 220 itself is concentric, since the support portion 241 is arranged at the passage position of the illumination light, a light distribution trough is formed. That is, the light distribution of the illumination device 200 is not concentric but distorted. The present invention can also be applied to a lighting device 200 as shown in FIG.

FIG. 7 is a diagram for explaining the installation position of the antenna 31 in the lighting device 200 according to this modification. FIG. 7 is a schematic diagram of the lamp 220 viewed from below. Also, in FIG. 7, illustration of the antenna base 32 is omitted for the sake of convenience.

As shown in FIG. 7, for example, the antenna 31 is provided so that at least a portion of the antenna 31 overlaps the support portion 241 in plan view. From the viewpoint of further suppressing the influence on light distribution, the antenna 31 is provided so as to overlap the supporting portion 241 as a whole in a plan view, for example. This is an example in which the antenna 31 is provided in a portion where the light distribution of the light emitted from the light source section 221 becomes a trough in plan view. Such a light distribution valley is formed by the light source section 221 and the support section 241 .

Further, the antenna 31 is provided so as to extend from the antenna base 32 toward the support portion 241, for example.

(Modification 3 of Embodiment)
A lighting device 300 according to this modification will be described with reference to FIGS. 8 to 10. FIG. FIG. 8 is an enlarged view showing the surroundings of the lamps 320a and 320ab of the lighting device 300 according to this modification. In this modified example, differences from the embodiment will be mainly described. A lighting device 300 according to this modification differs from the embodiment in the number of lamps. Note that the illustration of the wireless communication device 30 is omitted in FIG. 8 is an enlarged view of a region of illumination device 300 corresponding to dashed line region R in FIG.

As shown in FIG. 8, the lighting device 300 includes lamps 320a and 320b, a wireless communication device, and a support 340. As shown in FIG. The lighting device 300 includes two lamps 320a and 320b. Note that the number of lamps included in lighting device 300 may be two or more. For example, the plurality of lamps are arranged at rotationally symmetrical positions about the column 340 in a plan view. Note that the wireless communication device may be the wireless communication device 30 according to the first embodiment, or may be the wireless communication device 130 according to the first modification.

Each of the lamps 320a and 320b emits illumination light L. As shown in FIG. At least one of the color and brightness of the illumination light L of the lamps 320a and 320b may be different. The lamps 320a and 320b are arranged so as to sandwich the support 340 in plan view. The lamp 320a, the support 340, and the lamp 320b are arranged, for example, in a straight line in plan view. Note that each of the lamps 320a and 320b is an example of a light source unit included in the lighting device 300. As shown in FIG.

In such a lighting device 300, even if the light distributions of the lamps 320a and 320b are concentric, the light distribution of the lighting device 300 is a combination of the light distributions of the lamps 320a and 320b. FIG. 9 is a diagram showing the illuminance distribution of the lighting device 300 according to this modification. Note that the center position in FIG. 9 corresponds to the position of the pillar 40 in plan view. The illuminance distribution shown in FIG. 9 is the result of measurement when the lamp 320a is arranged on one side in the left-right direction and the lamp 320b is arranged on the other side in the left-right direction in plan view.

As shown in FIG. 9, the illuminance distribution of the illumination light L emitted from the illumination device 300 is not concentric but distorted. In the example of FIG. 9, the illuminance distribution is concave (light distribution is concave) in the direction of the arrow. This is caused by the arrangement of the lamps 320a and 320b and the illuminance distribution of the lamps 320a and 320b. The concave portion of the illuminance distribution is an example of a valley of the light distribution of the light emitted from the lamps 320a and 320b. The trough of the light distribution is a region where the illuminance is relatively low in the irradiation region of the illumination light L. As shown in FIG.

In the example of FIG. 9, valleys V11 to V16 are illustrated as the valleys of light distribution. The valleys V11 and V14 are formed so as to sandwich the support 340 therebetween. Moreover, the valleys V12 and V13 are formed so as to sandwich the support 340 therebetween. Moreover, the valleys V15 and V16 are formed so as to sandwich the support 340 therebetween. At least one of valleys V11, V12, and V15 is an example of a first valley, and corresponding at least one of V14, V13, and V16 is an example of a second valley.

The troughs V11 to V14 are formed, for example, mainly by the respective illuminance distributions of the lamps 320a and 320b. The troughs V15 and V16 are mainly formed by a combined illuminance distribution obtained by synthesizing the illuminance distributions of the lamps 320a and 320b. Therefore, the valleys V15 and V16 are formed at intermediate positions between the lamps 320a and 320b.

The present invention can also be applied to such lighting device 300 . The installation positions of the antennas in such a lighting device 300 will be described below with reference to FIG. 10 .

FIG. 10 is a diagram for explaining the installation position of the antenna 31 in the lighting device 300 according to this modification. FIG. 10 is a schematic diagram of the lamps 320a and 320b viewed from below. In addition, in FIG. 10, illustration of the antenna base 32 is omitted for convenience.

As shown in FIG. 10, each of the two antennas 31 is arranged at a position not overlapping with each of the lamps 320a and 320b, for example, when the lamps 320a and 320b are viewed from below. For example, when the lamps 320a and 320b are viewed from below, each of the two antennas 31 is positioned inside an imaginary line C connecting the lamps 320a and 320b and not overlapping the lamps 320a and 320b. The virtual line C passes through the lamps 320a and 320b in plan view. In the present embodiment, the virtual line C is a curve connecting the centers of the lamps 320a and 320b in a plan view. Each of the two antennas 31 is provided inside the curve.

In this way, each of the two antennas 31 is provided in a portion that becomes a trough of the light distribution of the light emitted from the lamps 320a and 320b. For example, the antenna 31 is provided at a position equidistant from the two lamps 320a and 320b. Further, the antenna 31 is arranged on a straight line extending in a direction intersecting (for example, a direction orthogonal to) the direction in which the lamps 320a and 320b are arranged in a plan view and passing through the column 340, for example.

(Other embodiments)
Although the embodiments and the like have been described above, the present invention is not limited to the above-described embodiments and the like.

For example, in the above-described embodiments and the like, a member (eg, a device having a function other than illumination) is the antenna 31 (eg, the wireless communication device 30), but is not limited to this. The member is not particularly limited as long as it has a function other than illumination, and may be, for example, a camera or various sensors (eg, speed sensor, illuminance sensor, etc.).

Also, the number of antennas included in the wireless communication device of the above embodiments is not particularly limited. The number of antennas extending from the antenna stand toward the lamp may be one or more.

Further, in the above-described embodiments and the like, the lamp has a light source section having a light-emitting element, but the configuration is not limited to this as long as illumination light can be emitted. The light source section may have a fluorescent tube, a halogen lamp, or the like.

Also, in the above-described embodiments and the like, an example in which the wireless communication device is a device that relays communication has been described, but the present invention is not limited to this. Radio waves transmitted and received by the wireless communication device are not particularly limited. The wireless communication device may be a device that receives a control signal for controlling the light source.

Further, in the above-described embodiments and the like, an example in which the lighting device includes one member has been described, but the number of members provided in the lighting device is not limited to this. The lighting device may include, for example, two or more members having different functions. For example, a lighting device may comprise a wireless communication device and a sensor (eg, camera) connected to the wireless communication device. Also, the wireless communication device may be a device for transmitting the detection result of the sensor.

Further, in the above-described embodiments and the like, the example in which the member is an electronic device such as an antenna has been described, but the member is not limited to this. The member may be a non-electrically operated device.

Also, in the above embodiment, the lighting device is used outdoors, but it may be used indoors.

In addition, the present invention also includes a form obtained by applying various modifications to each embodiment that a person skilled in the art can think of, or a form realized by arbitrarily combining the constituent elements and functions of each embodiment without departing from the spirit of the present invention.

Reference Signs List 10, 100, 200, 300 lighting device 20, 220, 320a, 320b lamp 21, 221 light source section 31, 131b, 131d antenna (member)
32, 132 Antenna base 40, 240, 340 Post 50 Ground 131a Antenna (first antenna)
131c antenna (second antenna)
132a main surface C virtual line V1 to V4, V11 to V16 valleys (first valley, second valley)

Claims (7)

a stanchion;
a lamp provided on the support;
a member that is provided on the support at a position that is below the lamp and blocks light emitted from the lamp , and that exhibits a higher function as the position on the support is higher ;
The member is provided in a portion that becomes a valley of the light distribution of the light in a plan view from the direction in which the support column extends.
lighting device. The lamp has a plurality of light source units arranged to surround the support in the plan view,
The member is provided inside a virtual line connecting each of the plurality of light source units in the plan view,
The lighting device according to claim 1 . wherein the virtual line passes through the center of each of the plurality of light source units in plan view,
3. A lighting device according to claim 2. the member is an antenna,
The lighting device according to any one of claims 1 to 3. Furthermore, comprising a plate-shaped antenna base for supporting the antenna,
The antenna base is attached to the support so that the main surface faces outward in the plan view.
5. A lighting device according to claim 4. the valley of the light distribution includes a first valley and a second valley located on opposite sides of the support in the plan view;
The antenna base is attached to the post so as to extend in a direction connecting the first valley and the second valley in a plan view,
6. A lighting device according to claim 5. the antenna includes a first antenna and a second antenna extending from the antenna base toward the lamp;
The first antenna and the second antenna are provided so as to sandwich the support,
7. A lighting device according to claim 5 or 6.

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