JP2022125613A - Luminaire - Google Patents

Abstract

To provide a luminaire which is suppressed in increase in the size thereof and furthermore can perform illumination and drawing.SOLUTION: A luminaire is provided, comprising: an illumination unit 10 having an illumination light source 20 for illumination light DA illuminating an irradiation surface; and drawing unit 12 having a drawing light source 40 for drawing light DB for drawing an image on the irradiation surface, the illumination light source 20 of the illumination unit 10 is arranged with an optical axis KA directed to the irradiation surface, the drawing light source 40 of the drawing unit 12 is arranged with an optical axis KB toward the direction of inclination to the optical axis KA of the illumination light source 20. The luminaire further comprises a reflection member reflecting the light from the drawing light source 40 toward the irradiation surface.SELECTED DRAWING: Figure 4

Description

The present invention relates to lighting fixtures.

2. Description of the Related Art Projector apparatuses are known that transmit information and call attention to drivers and pedestrians by projecting images necessary for traffic onto road surfaces such as roadways and sidewalks (see, for example, Patent Document 1).
In addition, the lighting has a first light source that illuminates the road surface and a second light source that irradiates the display light, and the position of the gutter is indicated by the display light while illuminating the road surface, thereby enhancing the safety of passers-by. Instruments are also known (see, for example, US Pat.

Japanese Patent Application Laid-Open No. 2008-033071 JP 2020-161423 A

If a projector for projecting an image is mounted on a lighting fixture, an image can be projected onto the road simply by installing the lighting fixture. However, in order to project an image onto a road surface, a relatively long distance is required for an optical system including a light source for image projection and a lens. Therefore, when an optical system for projecting an image is arranged in a lighting fixture, there is a problem that the lighting fixture becomes large.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting fixture that can perform lighting and drawing while suppressing an increase in the size of the fixture.

The present invention is a lighting fixture comprising an illumination unit having an illumination light source for illuminating an irradiation surface, and a drawing unit having a drawing light source for drawing light for drawing an image on the irradiation surface. The illumination unit is arranged such that the illumination light source has an optical axis directed toward the irradiation surface, and the drawing unit has the drawing light source with an optical axis inclined with respect to the optical axis of the illumination light source. and a reflecting member that reflects the light from the drawing light source toward the irradiation surface.

According to the present invention, in the above-described lighting fixture, the irradiation position of the drawing light can be changed by changing the orientation of the reflecting member.

In the illumination device according to the present invention, the drawing section includes a mask member having a light passing section that allows the light from the drawing light source to pass therethrough in a pattern corresponding to the image, between the drawing light source and the reflecting member. and an imaging lens that forms an image of the light that has passed through the light passage section on the irradiation surface.

According to the present invention, in the above-described lighting fixture, the light emitting surface of the light source for drawing is larger than the light passing portion of the mask member, and the aperture of the imaging lens is larger than the light emitting surface of the light source for drawing. and

The present invention is characterized in that, in the lighting fixture, the direction of the image can be changed by rotating the mask member with respect to the optical axis of the drawing light source.

The present invention is characterized in that, in the lighting fixture, a first light shielding means is provided on the side of the irradiation surface of the drawing light source.

The present invention is characterized in that, in the lighting fixture, a second light blocking means is provided between the drawing section and the lighting section.

The present invention is characterized in that, in the above lighting equipment, the drawing light is white light.

According to the present invention, in the above-described lighting equipment, the rendering unit illuminates at least a portion of the periphery of the image on the irradiation surface with light of a color different from that of the portion of the image.

The present invention is characterized in that, in the above-mentioned lighting fixture, the illuminance ratio between the image portion and the periphery of the image on the irradiation surface is 8:1 or more.

According to the present invention, in the above-described lighting equipment, the lighting unit reduces the illuminance of at least a portion of the image on the irradiation surface when the drawing unit is emitting the drawing light. .

The present invention is characterized in that, in the above lighting device, the drawing unit flashes the image at a flashing interval of 1 to 3 seconds.

According to the present invention, in the above-described lighting equipment, the lighting unit reduces the illuminance of a portion of the irradiation surface corresponding to the image in synchronization with blinking display of the image.

The present invention is characterized in that the lighting fixture further comprises a control section that controls the drawing section based on a signal from an external device.

According to the present invention, in the above-described lighting equipment, the irradiation surface is a road surface, and the drawing unit emits the drawing light in a direction opposite to a traffic direction of the road.

ADVANTAGE OF THE INVENTION According to this invention, illumination and drawing can be performed, suppressing the enlargement of a fixture.

It is a figure which shows typically the installation aspect of the road lighting fixture which concerns on embodiment of this invention. It is the perspective view which looked at the fixture main body of a road lighting fixture from the bottom face side. It is a bottom view of an instrument main body. It is the perspective view which looked at the road lighting fixture of the state which removed the partition plate and the light-shielding plate from the bottom face side. FIG. 4 is a bottom view of the instrument body with the partition plate and the light shielding plate removed; 3 is a diagram showing the configuration of a drawing unit included in the drawing section; FIG. It is the perspective view which looked at the road lighting fixture 1 of the state which opened the upper surface cover from the upper surface side. FIG. 10 is a diagram showing the results of a first visibility investigation that investigated the relationship between the color of drawing light and the visibility of a displayed image; FIG. 10 is a diagram showing the results of a second visibility investigation that investigated the relationship between the contrast between the display image on the road surface and its surroundings and the visibility of the display image. FIG. 10 is a diagram showing the results of a conspicuity investigation in which the relationship between the blinking interval when a display image is displayed blinking on the road surface and the conspicuity of the display image is investigated; FIG. 10 is a diagram showing the results of a discomfort research that investigated the relationship between the blinking interval when a display image is blinked on the road surface and the discomfort received from the image M; It is a figure which shows the drawing aspect of the image based on the modification of this invention. It is a perspective view of the road lighting fixture which concerns on the modification of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram schematically showing an installation mode of a road lighting fixture 1 according to this embodiment.
A road lighting fixture 1 includes a fixture body 4 supported by a pole 2 of a predetermined height (for example, 8 to 10 meters) erected on a roadside RA (for example, a road shoulder) of a road R; and a control panel 5 installed at the bottom, wherein the instrument body 4 illuminates the road surface RB of the road R with the illumination light DA, and draws a predetermined image M within the illumination range of the road surface RB with the drawing light DB, Further, the drawing can be controlled from the control panel 5. FIG.

FIG. 2 is a perspective view of the fixture body 4 of the road lighting fixture 1 as seen from the bottom side.
The instrument main body 4 includes a substantially box-shaped case body 6 that is substantially rectangular in bottom view. An end portion (hereinafter referred to as a rear end portion 6B) is coupled to the tip portion 2A of the pole 2. As shown in FIG. More precisely, the device main body 4 is such that the center line C connecting the front end portion 6A and the rear end portion 6B of the case body 6 (Fig. 3: in this embodiment, the longitudinal direction of the case body 6) It is supported by the pole 2 in a posture perpendicular to the direction RD (FIG. 1).

FIG. 3 is a bottom view of the instrument main body 4. FIG.
The case body 6 of the device main body 4 has an emission opening 8 for emitting the illumination light DA at the bottom, and the emission opening 8 is covered with a transparent cover member (not shown) made of a translucent material.
The case body 6 houses an illumination unit 10 that emits the illumination light DA and a drawing unit 12 that emits the drawing light DB. It is arranged in the exit aperture 8, and both the illumination light DA and the drawing light DB are emitted through the exit aperture 8.

The control panel 5 is an operation means for operating the lighting of the drawing unit 12, and includes an operator (such as a switch) that accepts user operations, and supplies/shuts off power to the drawing unit 12 according to the operation of the operator. and an on/off circuit that turns on/off the drawing unit 12 by turning on/off, and is installed within the pole 2 at a height HA (FIG. 1) from the ground that is within reach of the user. It is Accordingly, the user can turn on the drawing unit 12 by operating the control panel 5 to energize the drawing unit 12 and display the image M on the road surface RB as necessary.
Note that the method of turning on/off the drawing unit 12 is not limited to turning on/off the power supply, and any known appropriate method can be used. The drawing unit 12 is provided with a lighting control circuit for controlling dimming and blinking of the drawing light source 40, which will be described later, so that the user can control not only the ON/OFF of the drawing unit 12 but also the dimming and blinking from the control panel 5. good too.

The image M is an image of arbitrary symbols, characters, patterns, or an appropriate combination thereof. For example, when a disaster occurs or an underpass is flooded, the driver of the vehicle can be notified by displaying an arrow indicating an evacuation guidance direction or an image notifying that the road is closed as the image M. Also, an image calling attention to wrong-way cars, falling objects, animals, etc. can be displayed as an image M to notify the driver of the vehicle.

Next, the internal structure of case body 6 will be described in detail.
As shown in FIG. 3, the case body 6 is provided with a partition plate 14 that partitions the interior space between the illumination section 10 and the drawing section 12 . The partition plate 14 extends in a direction substantially perpendicular to the center line C of the case body 6 to partition the space of the case body 6 into a front end portion 6A side and a rear end portion 6B side. The illumination unit 10 is provided in the partitioned space on the side of 6A, and the drawing unit 12 is provided in the partitioned space on the rear end portion 6B side.

The illumination unit 10 includes one or more (three in the illustrated example) illumination light sources 20 that emit white light, and light control elements (not shown) such as lenses and reflectors. The illumination light DA with a predetermined light distribution is emitted by controlling the light with the light control element. As shown in FIG. 2, the illumination unit 10 is provided in the case body 6 so that the optical axis KA of the illumination light DA is directed toward the road surface RB, which is the irradiation surface. In this embodiment, the illumination light source 20 is an LED, which is an example of a light-emitting element, and a COB (Chip On Board) type LED with a relatively high output is used. It is arranged to face the opening surface of the opening 8 so as to be substantially orthogonal to the opening surface.

Further, a light shielding plate 16 that covers the rear end portion 6B side is provided in the exit opening 8 of the case body 6, and the drawing section 12 is provided in a portion covered by the light shielding plate 16. . The light shielding plate 16 or the light shielding function of the light shielding plate 16 may be provided in a cover member (not shown).

4 is a bottom perspective view of the road lighting fixture 1 with the partition plate 14 and the light shielding plate 16 removed, and FIG. 5 is a bottom view of the fixture main body 4 with the partition plate 14 and the light shielding plate 16 removed. is. FIG. 6 is a diagram showing the configuration of the drawing unit 30 provided in the drawing section 12. As shown in FIG.
The drawing unit 12 draws the image M on the road surface RB with a sufficient amount of light (road surface drawing illuminance is 200 lx in the present embodiment) that can be visually recognized even if it is irradiated by the headlights of the vehicle. 2, a drawing unit 30 including a drawing light source 40, a mask member 42, an imaging lens 44, and a mirror 46 is provided.

The drawing light source 40 is a light source that emits a beam of white light. In this embodiment, as with the illumination light source 20, a relatively high output COB LED is used as the drawing light source 40 in order to achieve a predetermined road surface drawing illuminance.
The mask member 42 is a member provided with a light passing portion 43 (FIG. 7) that forms pattern light corresponding to the image M by allowing light from the drawing light source 40 to pass through in a pattern corresponding to the image M. . In this embodiment, the mask member 42 is made of a metal plate having light passage portions 43 punched out in a pattern corresponding to the image M. As shown in FIG.
The imaging lens 44 is a single lens, such as a spherical double-convex lens, that draws the image M by forming an image of the pattern light obtained by the light passing portion 43 on the road surface RB in a predetermined size. The imaging lens 44 has parameters such as the distance along the optical path from the light passage portion 43 to the imaging lens 44, the distance along the optical path from the imaging lens 44 to the road surface RB, and the size of the image M on the road surface RB. Various optical design values such as focal length are defined based on
The mirror 46 is an optical element that reflects the light that has passed through the imaging lens 44 toward the road surface RB. Although the mirror 46 in the illustrated example has a flat reflecting surface shape, the reflecting surface shape can be changed to an appropriate shape such as a concave surface or a convex surface.

In the drawing unit 30, as shown in FIG. 6, the drawing light source 40, the mask member 42, the imaging lens 44, and the mirror 46 are arranged on the optical axis KB of the drawing light source 40, and FIG. As shown, the optical axis KB is housed in the case body 6 in a posture in which it is substantially parallel to the opening surface of the emission aperture 8 (that is, in a posture inclined with respect to the optical axis KA of the illumination light source 20).

According to the drawing unit 30, the optical axis KB in the drawing unit 30 is substantially parallel to the opening surface of the emission aperture 8, and the drawing light DB is reflected by the mirror 46 and emitted from the emission aperture 8 to the road surface RB. ing. As a result, even if the distance along the optical axis of the drawing unit 30 (hereinafter referred to as "optical axis distance") is relatively long in order to increase the brightness and contrast of the image M on the road surface RB, No increase in thickness. That is, even if the thickness of the existing case body 6 designed to match the illumination light source 20 of the illumination unit 10 is relatively thin, for example, about 3 cm to 4 cm, the thickness can be increased without changing the thickness. A drawing unit 30 having a relatively long optical axis distance, which is advantageous for increasing brightness and contrast, can be incorporated.

In addition to this, since the drawing unit 30 is provided with an imaging lens 44 between the mask member 42 and the mirror 46, it is possible to clearly draw a sufficiently large size image M. can change the image M to

In the drawing unit 30, the light emitting surface 40A (FIG. 6) of the light source 40 for drawing is larger than the light passing portion 43 of the mask member 42, and the diameter of the imaging lens 44 is equal to that of the light emitting surface 40A of the light source 40 for drawing. is larger than
In this embodiment, the diameter of the circular light emitting surface 40A of the light source 40 for drawing is 20 mm, the dimension of the light passage portion 43 is 20 mm×15 mm, the diameter of the imaging lens 44 is 35 mm, and the light source 40 for drawing and the mask The optical axis distance between the members 42 is 10 mm, and the optical axis distance between the mask member 42 and the imaging lens 44 is 60 mm (that is, the optical axis distance between the drawing light source 40 and the imaging lens 44 is 70 mm). .
As a result, the light passes through the entire area of the light passing portion 43 without lacking, and all of the pattern light obtained by the light passing portion 43 enters the imaging lens 44 and forms an image on the road surface RB. The image M of the shape can be drawn without lacking and with higher brightness.

In this embodiment, as shown in FIG. 5, the drawing light source 40 of the drawing unit 30 is provided in the case body 6 with the emission direction E of the emitted light directed toward the tip portion 6A, that is, toward the illumination section 10. there is On the other hand, as described above, the interior of the case body 6 is partitioned by the partition plate 14, and the partition plate 14 is made of a light shielding material such as metal. Therefore, the partition plate 14 shields the leaked light from the drawing light source 40 side to the lighting unit 10, and the generation of stray light (light that illuminates areas other than the road surface RB) caused by the leaked light is suppressed.

Furthermore, as described above, the light shielding plate 16 is arranged in the exit aperture 8. As shown in FIG. At least the drawing light source 40 (in this embodiment, the mask member 42 and the imaging lens 44 ) of the drawing unit 30 is arranged in the area covered by the light shielding plate 16 . As a result, in the drawing unit 30, at least the side of the drawing light source 40 facing the road surface RB is covered with the light shielding plate 16, and the light directly traveling from the drawing light source 40 toward the road surface RB is blocked by the light shielding plate 16. It is possible to prevent the drawing light source 40 from becoming a glare source and giving a dazzling feeling.

In the drawing unit 30, as shown in FIG. 3, the mirror 46 is arranged in the gap 17 between the light shielding plate 16 and the partition plate 14, and is a reflecting member that reflects the drawing light from the gap 17 toward the road surface RB. be.
As shown in FIG. 2, the instrument main body 4 is provided outside the case body 6 and has a rotation operation section 50 that receives a rotation operation, and a rotation shaft 51 that rotates according to the rotation operation of the rotation operation section 50. A mirror 46 is coupled to the rotating shaft 51, and the mirror 46 rotates according to the rotation of the rotating shaft 51, so that the reflection direction of the drawing light DB changes. Therefore, the user can change the reflection direction of the drawing light DB by the mirror 46 by rotating the rotary operation unit 50 and adjust the drawing position of the image M on the road surface RB.

The light shielding plate 16 may cover from the rear end portion 8B of the exit aperture 8 to the partition plate 14, and may have a configuration in which an opening through which the light reflected by the mirror 46 passes is formed in the plane.

FIG. 7 is a perspective view of the road lighting fixture 1 with the top cover 52 opened, viewed from the top side.
The road lighting fixture 1 of this embodiment is configured so that the orientation of the image M drawn on the road surface RB can also be changed.
Specifically, as shown in FIG. 7, the instrument main body 4 includes a top-opening top cover 52 that covers the rear end portion 6B side of the top surface of the case body 6 . A mask folder 56 (FIG. 4) is provided inside the apparatus main body 4 at a position exposed when the top cover 52 is opened, between the drawing light source 40 and the imaging lens 44. The mask member 42 is detachably held in the mask holder 56 . In this case, the mask member 42 is attached to the mask holder 56 while being attached to the attachment member 54 that engages the mask holder 56 in a non-releasable manner. The mask member 42 can be attached to the attachment member 54 while being rotated around the optical axis KB. The orientation of the image M on the road surface RB is also changed according to the change.

Next, the manner in which the image M is drawn by the drawing unit 30 will be described in further detail.

FIG. 8 is a diagram showing the results of a first visibility investigation that investigated the relationship between the color of the drawing light DB and the visibility of the image M. In FIG.
In this first visibility test, a plurality of subjects observed an image M drawn within a range illuminated by the illumination light DA in a state where the road surface RB was illuminated by the illumination light DA at night. The visibility of M is evaluated in five stages of “clearly visible”, “slightly visible”, “difficult to see”, “almost invisible”, and “completely invisible”, and FIG. 8 summarizes such evaluation results. It was obtained by
As shown in FIG. 8, when the color of the drawing light source 40 is "white", the visibility is significantly improved compared to the cases of "red", "blue" and "green".
Therefore, in the present embodiment, the visibility of the image M on the road surface RB is enhanced by using a light source that emits white light as the drawing light source 40 as described above.

FIG. 9 is a diagram showing the results of a second visibility investigation that examined the relationship between the contrast between the image M and its surroundings on the road surface RB and the visibility of the image M. As shown in FIG. The investigation method of the second visibility investigation is the same as that of the first visibility investigation. Contrast is an illuminance ratio determined by the following equation (1). However, in this second visibility investigation, the investigation is conducted in a state in which the image M is displayed blinking by blinking the drawing light source 40 at a plurality of blinking intervals.

Contrast=Sa/Sb (1)
However, Sa is the illuminance of the image M portion on the road surface RB, and Sb is the illuminance of the road surface RB around the image M (FIG. 1).

As shown in FIG. 9, regardless of the blinking interval of the image M, when the contrast is "8" or more (that is, "8:1" or more), the image M is more stable than when the contrast is less than "8". It can be seen that it becomes easier to see.
Therefore, in this embodiment, the light output of each of the illumination light source 20 of the illumination unit 10 and the drawing light source 40 of the drawing unit 12 is set so that the contrast is "8" or more. Specifically, the light output of the lighting light source 20 is set to a value that provides the illuminance required for road lighting (hereinafter referred to as required illuminance). Then, by substituting this required illuminance into the equation (1), the illuminance Sa at the display portion of the image M at which the contrast becomes 8 times or more is obtained, and the light output of the drawing light source 40 is set to a value at which this illuminance Sa is obtained. is set.

FIG. 10 is a diagram showing the results of a conspicuity investigation in which the relationship between the blinking interval (lighting cycle) when the image M is blinked on the road surface RB and the conspicuity of the image M is examined. Further, FIG. 11 is a diagram showing the results of a discomfort research that investigated the relationship between the blinking interval when the image M is displayed blinking on the road surface RB at a duty ratio of 50% and the discomfort received from the image M. As shown in FIG.
In the conspicuity survey, the conspicuity of the image M was determined by the subject as "easy to notice", "somewhat easy to notice", "normal", "difficult to notice", and "not noticeable". It was carried out by evaluating in five stages. In addition, in the discomfort survey, the discomfort received by the subject from the image M was classified into 5 levels of "unpleasant", "somewhat unpleasant", "normal", "acceptable", and "not unpleasant" in the survey method of the first visibility survey. This was done by evaluating in stages.
Further, in these conspicuity surveys and discomfort surveys, the light output of the drawing light source 40 is changed to change the contrast to "2", "8" and "300", and the surveys are conducted with each contrast.

As shown in FIG. 10, it can be seen that the shorter the blinking interval, the easier it is to notice in any contrast. Also, when the contrast is relatively low "2", it is difficult to notice the image M when the blinking interval exceeds 3 seconds. Therefore, in order to make the image M noticeable at any contrast, the blinking interval must be 3 seconds or less.

On the other hand, as shown in FIG. 11, it can be seen that the shorter the blinking interval is, the more uncomfortable the feeling is for any contrast. It turns out that it increases remarkably. Therefore, in order not to make the image M feel uncomfortable at any contrast, the blinking interval should be 1 second or more.

In this embodiment, the drawing light source 40 blinks at a blinking interval of 1 second or more and 3 seconds or less based on the results of the conspicuity survey and the discomfort adjustment results. It is designed to blink.
Furthermore, by flashing the drawing light source 40, power consumption and heat load can be suppressed, and drawing with higher brightness can be realized.

According to the embodiment described above, the following effects are obtained.

The road lighting fixture 1 of the present embodiment has an illumination unit 10 having an illumination light source 20 of illumination light DA for illuminating the road surface RB, and a drawing light source 40 of drawing light DB for drawing an image M on the road surface RB. and a drawing unit 12. The illumination unit 10 is arranged such that the illumination light source 20 faces the road surface RB with the optical axis KA. The drawing unit 12 is arranged such that the drawing light source 40 directs the optical axis KB in a direction inclined with respect to the optical axis KA of the illumination light source 20, and directs the light emitted from the drawing light source 40 toward the road surface RB. A reflecting mirror 46 is provided.

According to such a configuration, even if the optical axis distance of the drawing unit 12 is relatively long in order to achieve high brightness and high contrast, the existing case body 6 designed to correspond to the illumination unit 10 can be used. Since the device can be incorporated without changing the thickness, the size of the device is not increased, and the design property is not deteriorated due to the increase in the thickness of the case body 6.例文帳に追加

Since the road lighting fixture 1 of this embodiment includes the rotary operation unit 50 that changes the direction of reflection by the mirror 46, the user can easily set the display position (illumination position) of the image M by operating the rotary operation unit 50 at the installation site. It can be adjusted and workability is improved.

In the road lighting fixture 1 of the present embodiment, the drawing section 12 is a mask having a light passing section 43 between the drawing light source 40 and the mirror 46 that allows the light from the drawing light source 40 to pass through in a pattern corresponding to the image M. It includes a member 42 and an imaging lens 44 that forms an image of the light that has passed through the light passage portion 43 on the road surface RB.
With such a configuration, the imaging lens 44 can draw a sufficiently large and clear image M, and the image M can be easily changed by changing the mask member 42 .

In the road lighting fixture 1 of this embodiment, the light emitting surface 40A of the drawing light source 40 is larger than the light passing portion 43 of the mask member 42, and the aperture of the imaging lens 44 is larger than the light emitting surface 40A of the drawing light source 40. big.
As a result, the light passes through the entire area of the light passing portion 43 without lacking, and all of the pattern light formed by passing through the light passing portion 43 enters the imaging lens 44 and forms an image on the road surface RB. , the image M of arbitrary shape can be drawn without lacking and with higher brightness.

In the road lighting fixture 1 of the present embodiment, the mask member 42 is held between the drawing light source 40 and the mirror 46 so that the direction of the light passage part 43 can be changed. By freely changing the direction of 43, the direction of the image M can be easily adjusted, and workability can be improved.

In the road lighting fixture 1 of this embodiment, the light shielding plate 16 is provided on the road surface RB side of the drawing light source 40 .
As a result, the light from the drawing light source 40 directly directed toward the road surface RB is shielded by the light shielding plate 16, so that the drawing light source 40 can be prevented from becoming a glare source and causing a dazzling feeling.

In the road lighting fixture 1 of the present embodiment, since the partition plate 14 made of a light-shielding material is provided between the drawing section 12 and the lighting section 10, light leakage from the drawing section 12 side to the lighting section 10 is prevented. It is shielded by the partition plate 14, and the generation of stray light caused by the leaked light is suppressed.

In the road lighting fixture 1 of the present embodiment, the drawing light DB is white light, so the visibility of the image M on the road surface RB is enhanced.

In the road lighting device 1 of the present embodiment, the contrast between the image M portion on the road surface RB and the surrounding area MA of the image M is 8 or more, so the visibility of the image M is further enhanced.

In the road lighting fixture 1 of the present embodiment, the drawing unit 12 flashes the image M at a flashing interval of 1 to 3 seconds. can be done.

The above-described embodiment is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.

(Modification 1)
In the above-described embodiment, as shown in FIG. 12, by illuminating at least a portion of the periphery MA (especially the contour portion) of the image M on the road surface RB with light of a color different from that of the portion of the image M, the visibility of the image M is improved. can be higher. Any technique for illuminating the perimeter MA of the image M with different colors is suitable. For example, the light passing portion 43 is formed on the surface of a transparent plate material, and a color filter for changing the color is arranged on the entire circumference or part of the outline of the light passing portion 43 . As a result, the color of all or part of the contour MB of the image M on the road surface RB is different from that of the image M, making it more conspicuous. The color of the contour MB of the image M is arbitrary, but according to the results shown in FIG. 8, the visibility can be effectively enhanced by setting the color of the contour MB to "green".

(Modification 2)
In the embodiment described above, the contrast of the image M may be increased by reducing the illuminance of at least a portion of the surrounding area MA of the image M on the road surface RB. For example, when the illumination unit 10 includes a plurality of illumination light sources 20, the illumination unit 10 emits the drawing light DB while the drawing unit 12 emits the illumination light DB. The illuminance may be lowered by appropriately turning off or adjusting the light source 20 .
In the same modification, when the drawing unit 12 blinks the image M, the illumination unit 10 reduces the illuminance of at least a part of the surrounding MA (especially the outline portion) of the image M in synchronization with the blinking display. may

(Modification 3)
In the above-described embodiment, the road lighting fixture 1 includes a receiving device that receives a signal transmitted from an external device (for example, a portable electronic device owned by a user, various sensor devices, etc.), and a receiving device that receives the signal. A lighting control circuit (control unit) for controlling lighting (on/off, dimming, blinking, etc.) of the drawing light source 40 of the drawing unit 12 based on the received signal may be provided in the fixture body 4 . A publicly known or well-known circuit can be used for the lighting control circuit. As a result, turning on/off of the drawing of the image M by the drawing unit 12 and the drawing mode can be remotely controlled by the external device. In this case, it is appropriate whether or not the road lighting fixture 1 is provided with the control panel 5 provided at the bottom of the pole 2 .

(Modification 4)
In the above-described embodiment, as shown in FIG. 13, the rendering unit 12 may emit the rendering light DB in the direction opposite to the traffic direction RD of the road R (that is, in the reverse direction). As a result, even when the drawing light DB is likely to be reflected by the water film on the surface of the road surface RB during rainy weather, etc., drawing is performed toward the driver of the vehicle traveling in the traffic direction RD (that is, from the counter side). Since the light DB is reflected by the road surface RB, deterioration of the visibility of the image M can be prevented.
A configuration for emitting the drawing light DB in the direction opposite to the traffic direction RD is appropriate. For example, as shown in FIG. 13, the drawing unit 30 may be provided in the fixture body 4 so that the reflection direction of the mirror 46 faces the direction opposite to the traffic direction RD.

(Modification 4)
In the above-described embodiment, the drawing unit 30 may be provided in the instrument main body 4 in such a direction that the drawing light source 40 emits light toward the rear end portion 6B instead of the front end portion 6A.
Moreover, in the device main body 4, the drawing section 12 may be provided on the side of the distal end portion 6A, and the lighting section 10 may be provided on the side of the rear end portion 6B.

(Other modifications)
The present invention is applicable not only to the road lighting fixture 1 but also to any lighting fixtures that illuminate the road surface, the ground, the floor surface, the wall surface, such as tunnel lighting fixtures, street lights, security lights, and downlights.

Unless otherwise specified, the horizontal and vertical directions, various numerical values, and shapes in the above-described embodiments include ranges (so-called equivalent ranges) that produce the same effects as those directions, numerical values, and shapes.

1 road lighting equipment (lighting equipment)
2 Pole 2A Tip 4 Instrument body 5 Control panel (operating means)
8 exit aperture 10 illumination section 12 drawing section 14 partition plate (second light shielding means)
16 light shielding plate (first light shielding means)
20 Light source for illumination 30 Drawing unit 40 Light source for drawing 40A Light-emitting surface 42 Mask member 43 Light passage part 44 Imaging lens 46 Mirror (reflecting member)
51 rotation axis (means for changing the direction of reflection)
54 Mounting member 56 Mask folder DA Illumination light DB Drawing light KA Optical axis of light source for illumination KB Optical axis of light source for drawing M Image MA Perimeter of image MB Outline of image R Road RB Road surface RD Traffic direction

Claims (15)

an illumination unit having an illumination light source for illumination light for illuminating an irradiation surface;
a drawing unit having a drawing light source for drawing light for drawing an image on the irradiation surface;
A lighting fixture comprising
The illumination unit
The illumination light source is arranged with an optical axis directed toward the irradiation surface,
The drawing unit
The drawing light source is arranged with its optical axis oriented in a direction inclined with respect to the optical axis of the illumination light source, and a reflecting member is provided for reflecting the light of the drawing light source toward the irradiation surface. A lighting fixture characterized by: The lighting fixture according to claim 1, wherein the irradiation position of the drawing light can be changed by changing the direction of the reflecting member. The drawing unit
a mask member having, between the drawing light source and the reflecting member, a light passing portion that allows the light from the drawing light source to pass therethrough in a pattern corresponding to the image;
an imaging lens that forms an image of the light that has passed through the light passage portion on the irradiation surface;
3. A luminaire according to claim 1 or 2, comprising a . the light emitting surface of the drawing light source is larger than the light passing portion of the mask member,
4. The lighting fixture according to claim 3, wherein the aperture of the imaging lens is larger than the light emitting surface of the drawing light source. 5. The lighting fixture according to claim 3, wherein the direction of the image can be changed by rotating the mask member with respect to the optical axis of the drawing light source. The lighting fixture according to any one of claims 1 to 5, further comprising a first light shielding means on the side of the irradiation surface of the drawing light source. The lighting fixture according to any one of claims 1 to 6, further comprising a second light shielding means between the drawing section and the illumination section. The lighting fixture according to any one of claims 1 to 7, wherein the drawing light is white light. The drawing unit
9. The lighting fixture according to any one of claims 1 to 8, wherein at least a portion of the periphery of the image on the irradiation surface is illuminated with light of a color different from that of the portion of the image. 10. The luminaire according to any one of claims 1 to 9, wherein the illuminance ratio between the portion of the image and the periphery of the image on the irradiation surface is 8:1 or more. The illumination unit
11. The lighting fixture according to any one of claims 1 to 10, wherein when the drawing unit emits the drawing light, the illuminance of at least part of the periphery of the image on the irradiation surface is reduced. The drawing unit
12. The lighting fixture according to any one of claims 1 to 11, wherein the image is flashed at a flashing interval of 1 to 3 seconds. The illumination unit
13. The lighting fixture according to claim 12, wherein, in synchronization with blinking display of the image, illuminance of a portion of the irradiation surface corresponding to the image is reduced. The lighting fixture according to any one of claims 1 to 13, further comprising a control section that controls the rendering section based on a signal from an external device. The irradiation surface is a road surface,
The lighting fixture according to any one of claims 1 to 14, wherein the drawing unit emits the drawing light in a direction opposite to a traffic direction of the road.

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