JP5020725B2 - Street lighting fixtures and street lights - Google Patents

Description

  The present invention relates to a power-saving luminaire used for applications that are lit outdoors such as at night using electric power charged by solar power generation in the daytime and a solar-type street lamp using the luminaire. is there.

  In JP 2003-151320 A (Patent Document 1), a support column standing from the ground, a solar panel that is arranged at the top of the support column and that generates solar power during sunshine, and a lower part adjacent to the solar panel. A street light provided with a battery for storing generated electric power and an illuminating lamp projecting laterally from the upper part of the column to illuminate the ground is described.

  The illuminating lamp described in Patent Document 1 is provided with a plurality of light emitting diodes serving as light sources and a lens cover that extends the reach of irradiation light emitted by the light emitting diodes. When this solar type street lamp receives sunlight in the daytime, the solar panel converts the solar energy into electric energy and stores it in the battery. Then, at night, the timer circuit works to turn on all the light-emitting diodes and illuminate the ground extensively. When 4 hours elapses after the light emitting diodes are turned on, half the light emitting diodes are turned off by the action of the timer circuit, and the brightness of the illumination is halved. Furthermore, in the morning, all the light emitting diodes are turned off by the action of the timer circuit.

  Japanese Patent Application Laid-Open No. 2004-111104 (Patent Document 2) discloses a lighting white LED that mainly illuminates the lower surface of an appliance inside a single light bulb-shaped lighting fixture, and from the side of the appliance to the side. The lighting fixture provided with the light bulb color LED which emits effect light is shown (refer FIG. 27 of patent document 2).

  By arranging the bulb-shaped lighting fixture described in Patent Document 2 near the ceiling in the room, the floor direction directly under the lighting fixture can be illuminated in white, and the wall and ceiling direction can be illuminated in the bulb color. Moreover, by changing the color of the light bulb that emits light to the side and using LEDs of other light emission colors such as yellow and orange, it is possible to adjust the color of the walls and ceiling to produce a feeling of relaxation. It is said that.

  Japanese Patent Application Laid-Open No. 11-144510 (Patent Document 3) is a disk-shaped lighting device that is used suspended from a ceiling, and has an annular fluorescent lamp for a 20-watt liquid crystal panel for production in the center. A lighting device is described in which a full-color liquid crystal panel is arranged immediately below the annular fluorescent lamp for the liquid crystal panel, and the illuminance level, color temperature, and emission color of light emitted for production can be adjusted (patent) (Refer FIG. 1 of literature 3). According to this lighting device, the illuminance level, the color temperature, and the emission color are adjusted for the occupants who are directly under the illuminating device, thereby simulating and directing the natural environment. Can be given.

  A 40-watt illumination annular fluorescent lamp for brightly illuminating the room is arranged inside the outer periphery of the disk-shaped illumination device described in Patent Document 3, and the outer periphery and the lower side of the illumination annular fluorescent lamp A peripheral diffusion plate is arranged so as to cover. In addition, a drum-shaped partition wall that partitions both light sources is arranged between the annular fluorescent lamp for 20-watt liquid crystal panel for production and the annular fluorescent lamp for 40-watt illumination for illumination. That is, an illumination light source and an effect light source are independently provided in one illumination device, and each light source is disposed in a separate storage chamber separated by a partition wall.

  Further, Patent Document 3 describes an indoor lighting device in which RGB primary color LEDs are arranged in place of an annular fluorescent lamp for a 20-watt liquid crystal panel and a full-color liquid crystal panel provided in the center. (See FIG. 2 and FIG. 3 of Patent Document 3.) Patent Document 3 describes a spherical indoor lighting device that is used by being suspended from a ceiling (see FIG. 4 of Patent Document 3). Production light emitted from the production LED is emitted from the outer periphery of the illumination device, and illumination light emitted from the illumination light source is emitted from below the illumination device. Moreover, the variation using LED as this light source for illumination is also shown.

  JP-A-7-192515 (Patent Document 4) discloses a transparent support plate that transmits light emitted from an illumination light source and a part of the light that is transmitted through the transparent support plate at a right angle. Then, two pairs of reflectors inclined left and right for emitting toward the side of the lighting fixture, and two pairs of diffusion plates for diffusing the reflected light and emitting it to the side of the lighting fixture A luminaire provided is described. Moreover, the light which did not go to a reflecting plate among the light which permeate | transmitted the transparent support plate is radiate | emitted toward the floor surface as illumination light, after diffusing using a downward diffusion plate. The light emitted toward the side is used as effect light for irradiating the wall surface of the room to obtain an effect.

In the lighting apparatus described in Patent Document 4, by moving the transparent support plate in the direction of the optical path, the two pair of stretchable reflectors in contact with the transparent support plate expand and contract. The area changes. Thereby, the ratio of the light quantity of the effect light emitted to the side and the light quantity of the illumination light emitted downward can be adjusted.
JP 2003-151320 A JP 2004-111104 A JP-A-11-144510 JP-A-7-192515

  The street lamp described in Patent Document 1 stores electric power obtained by performing solar power generation during daylight hours, and uses the electric power to light the street lamp at night. Therefore, in order to suppress the power consumption at the time of lighting, LED is used as the light source of the street lamp which illuminates the ground.

  However, in recent years, not only the function of lighting as a street light, but also the visibility from the side of the lighting of the street light (the street light exists there without feeling dazzling glare at night) And visibility from a distance (at night, there are street lights in the same direction, without being confused with building lights or signboard lights in the same direction) It is also demanded for the calm atmosphere, comfort, comfort, etc. received by the observer, and also for the crime prevention effect. In particular, street lights installed in parks and open spaces are required to have good appearance and visibility when turned on.

  In the lighting fixture described in Patent Document 2, the production LED that emits the production light to the side and the illumination LED that emits the illumination light downward are arranged in a single section of the lighting fixture. Yes. Therefore, when this lighting apparatus is viewed from the side, since the light source for production and the light source for illumination appear to be mixed, color mixing occurs, and the effect of the production is greatly reduced due to the color becoming cloudy. Arise. In addition, when viewed from the side, the LED of each ball appears to shine, resulting in unevenness in the brightness of the effect light, which is not suitable for the purpose of the effect. Moreover, since glare due to the LED for illumination also occurred, it looked dazzling when viewed from the side, and it was impossible to obtain a calm atmosphere, comfort and comfort.

  In the indoor lighting device shown in FIG. 1 and FIG. 3 of Patent Document 3, since an illumination light source is arranged on the outer peripheral portion, when this is applied to a street lamp, the indoor lighting device is viewed from the side. When you see it, it looks dazzling and glare occurs. Therefore, when this indoor lighting device is viewed from the side, it has not been possible to obtain a calm atmosphere, comfort and comfort. Further, as shown in FIG. 4 of Patent Document 3, when the production LEDs are arranged on the outer periphery of the indoor lighting device, the glare of each ball appears to shine when viewed from the side. Occurs. In addition, when a large number of LEDs are arranged, the power consumption increases, so when used as a solar type street light, the power consumption is too much, so the lighting time at night is limited, and the solar panel and battery are enlarged. It causes problems such as necessity.

  Moreover, since the lighting fixture described in Patent Document 4 has a structure that uses a single light source for both the illumination light and the effect light, when trying to increase the amount of illumination light for illuminating the ground, Since the effect light inevitably emitted sideways becomes brighter, glare occurs. Therefore, there is a problem that it is difficult to produce a calm atmosphere, comfort, and comfort by using the effect light emitted to the side.

  In addition, since it will inevitably reduce the light emitting area when viewed from the side when trying to reduce the amount of light emitted to the side using the lighting fixture described in Patent Document 4, the side And a problem that visibility from a distant place is lowered.

  The present invention was created to solve the above problems, and in a lighting device for a street light that illuminates a road surface and the ground at night using electric power charged during daytime sunshine, It is intended to provide a street light luminaire and a street light that can provide a calm atmosphere, comfort and peace of mind when the lit street light luminaire is viewed from the side or from a distance. .

In order to achieve the above-mentioned object, the main structure of the lighting device for street lights according to the present invention is that the lighting LED for emitting the illumination light for illuminating the road surface or the like is arranged in the central portion, and is visible from the side. LED for visual recognition that emits visible light for enhancing the performance is arranged on the outside of the LED for illumination, a partition partitioning between the LED for illumination and the LED for visual recognition is arranged, on the outer peripheral surface of the partition Is formed with a reflection surface that reflects light emitted from the LED for viewing toward the side, and an illumination opening that emits the illumination light is formed at an open end of the partition wall. A visual light diffusing plate that diffuses the light emitted from the visual LED and the reflected light reflected by the reflective surface and emits the light to the side is disposed outside the visual LED. Intensity below 1500 (Millicandela), and A wide directivity LED having a light directivity of 100 ° or more is used, a narrow directivity LED having a light directivity of 90 ° or less is used as the illumination LED, and the LED is at a position 3 mm to 10 mm away from the illumination LED. An illumination light diffusion plate that diffuses illumination light is provided .

Furthermore, as the viewing window LED, it has preferably be used LED low luminance than the illumination LED.

  The visible light diffusing plate is preferably a diffusing plate having a side height and a side width of at least 50 mm, a thin plate material is used for the partition, and the shape of the partition is directed toward the illumination opening. It is preferable to form in a tapered shape with a wide opening area.

  Moreover, as another aspect, the illumination opening part of the said partition is inscribed, and it has the glove | cover which covers the said LED for illumination and the said LED for visual recognition from the outside, and is radiate | emitted from the said illumination opening part in the center part of the said glove | globe It is preferable that an illumination light transmitting portion that transmits the illumination light is formed, and the visible light diffusing plate is formed on a side portion of the globe.

  Further, in addition to the street light luminaire described above, a solar panel that performs solar power generation, a battery that stores electric power generated by the solar panel, and the battery that is stored according to ambient brightness or time. It is preferable that a street light is configured by providing a controller that supplies power to the illumination LED and the visual LED.

  In the street lighting luminaire according to the present invention, a partition wall is arranged between the illumination LED arranged in the center and the visual LED arranged outside, and the visual LED emits light on the outer peripheral surface of the partition wall. A reflection surface that reflects light toward the side is formed, and a visual light diffusing plate that diffuses the light emitted from the visual recognition LED and emits it to the side is disposed outside the visual recognition LED. It is possible to emit diffused light for visual recognition that is completely independent from the side. Therefore, visible light with less glare and excellent visibility can be emitted to the side. In addition, by using blue, green, red, yellow, orange, pink, purple, light bulb color, candle color, and other light emitting LEDs as visual LEDs, street lights can be installed with low power consumption. You can produce a calm atmosphere, comfort and peace in the alleys and parks. Further, different colors can be emitted from the side of the street lamp depending on the ambient brightness, time, and season, so that the visibility from the far side of the street lamp can be enhanced, and the effect of production can be enhanced. In an emergency, it is also possible to flash green and use it for evacuation guidance without receiving power from the power line, or to report danger from a distance by flashing red.

  Moreover, it is not dazzling by using LED with lower brightness than LED for illumination as LED for visual recognition, or using wide directivity LED with luminosity of 1500 mcd or less and directivity of light of 100 ° or more as LED for visual recognition. Visible light with less glare can be emitted, and a more calm atmosphere, comfort and peace can be produced.

  On the other hand, as an LED for illumination, by using a narrow directivity LED having a light directivity of 90 ° or less, and an illumination light diffusion plate that diffuses illumination light at a position 3 mm to 10 mm away from the illumination LED, Irradiance unevenness can be reduced while maintaining high illuminance. For example, if the distance between the illumination LED and the illumination light diffusion plate is made closer than 3 mm, the illumination light of each LED ball appears as unevenness in illuminance when the illumination light is irradiated onto the road surface or the ground. End up. Further, if the distance between the illumination LED and the illumination light diffusion plate is set to be more than 10 mm, the light is diffused too much, resulting in a problem that the illuminance when the illumination light is irradiated onto the road surface or the ground is lowered.

  Moreover, the visibility from the side of a street lamp can be improved by using a diffusion plate with a wide diffusion area having a side height and a side width of at least 50 mm as the visible light diffusion plate. In addition, a thin plate material is used for the partition wall that partitions between the illumination LED arranged in the central part of the lighting fixture and the visual recognition LED arranged on the outside, and the opening area becomes wider toward the illumination opening. By using a tapered shape, it is possible to prevent a part of the illumination light diffused at a predetermined angle from being blocked, and the visible light is efficiently reflected to the side and emitted toward the side of the luminaire. be able to. In addition, by using a thin plate material for the partition wall, the lighting LED and the visual recognition LED are efficiently arranged inside the lighting device for the street light with a limited volume, and color mixing between the illumination light and the visual recognition light is performed. Can be prevented.

  In addition, by placing a glove that covers the illumination LED and the visual recognition LED from the outside while making the illumination opening of the partition wall inscribed, the light source and wiring inside the illumination fixture from the outside environment can be arranged. Can be protected. In addition, by forming the visible light diffusing plate on the side of the globe, the street lamp lighting fixture can be made compact.

  In addition, by providing a lighting fixture, a solar panel, a battery, and a controller to configure a street light, the electric power obtained by solar power generation is stored in the battery, and when the surroundings are dark or at night, the battery Lighting the road and ground using the electricity stored in the lamp, and emitting uniform low-brightness visual light from the street light luminaire to the side, producing a calm atmosphere, comfort, or comfort be able to.

Hereinafter, based on the example shown in an accompanying drawing, the embodiment of the street light of the present invention is described.
FIG. 1 is a perspective view of a street lamp according to the present invention.
As shown in FIG. 1, the street lamp 10 is directed upward by fastening a box 14 that is erected and fixed on the ground, and a columnar lower end portion that is divided into two branches to both sides of the box 14. Illumination disposed vertically below the solar panel 30 between a support column 20 to which a solar panel 30 for photovoltaic power generation is vertically installed and attached to the upper end of the support column 20 and the support column 20 divided into two branches. The instrument 40 is comprised.

  The solar panel 30 attached to the top of the support column 20 is installed so as to form a downwardly inclined surface toward the south so that sunlight can be received as vertically as possible. We are able to perform solar power generation well.

  The luminaire 40 includes an illumination light transmitting portion 46 that emits illumination light emitted from an illumination LED (described in FIG. 2 below) toward the ground, and a visual recognition LED (described in FIG. 2 below). )) Diffuses the emitted light, and emits diffused light toward the side of the luminaire 40, and a hemispherical globe 48 having a belt-like visible light diffusing portion 44 (one form of a visible light diffusing plate). And the LED for illumination, the LED for visual recognition, and the case 42 for holding the globe 48.

  For example, when the solar panel 30 receives sunlight during daytime sunshine, the solar energy is converted into electric energy and stored in a battery (not shown) stored in the box 14.

  When the surroundings become dark, it is detected and a signal is emitted from a controller (not shown) housed in the box body 14 to supply power to the illumination LED and the visual recognition LED, and the illumination light and Visible light is emitted. Then, the illumination light is emitted downward from the illumination light transmitting portion 46 of the globe 48 to illuminate the road surface and the ground, and the visible light is emitted toward the side from the belt-like visible light diffusion portion 44 on the side surface of the globe. The

  The visible light recognizes the presence of the lighting fixture 40 when the observer looks at the side of the lighting fixture 40 that is lit from a distance, or has a calm atmosphere in the alley or park where the street light 10 is installed. It is a light for production to bring out comfort and comfort. By setting the luminance of the visible light, the luminance uniformity, the light emission area, the light emission color, or the like to a predetermined condition, the observer can obtain a calm atmosphere, comfort, comfort, and the like. As a light source for the visible light, an LED having a relatively good light emission efficiency is suitable because electric power obtained by solar power generation is used. In recent years, LEDs having blue, green, red, yellow, orange, pink, purple, light bulb color and other light emission colors have been supplied, so that the LED can be used as a light source for production. Moreover, the crime prevention effect can also be acquired by light-emitting blue visual light toward the periphery from the side surface of the lighting fixture 40. Note that the visual light may be the same color as the illumination light, or may be a color different from the illumination light.

Next, the structural example of the lighting fixture 40 which concerns on this invention is demonstrated using FIG.2 and FIG.3.
2 is a side view and a side cross-sectional view of the lighting fixture 40 according to the present invention, and FIG. 3 is a bottom view of the lighting fixture 40 shown in FIG. 2 as viewed from the illumination light emitting side. In the bottom view shown in FIG. 3, a part of the globe 48, the illumination light diffusing plate 50, and the partition wall 52 is cut out so that the internal structure can be easily observed. 2 is a cross-sectional view taken along the line II-II shown in FIG.

  As shown in FIG. 2, the lighting fixture 40 includes a case 42 that holds the contents in the lighting fixture 40, an illumination LED 54 that emits illumination light 55 for illuminating a road surface, and the illumination LED 54 emits light. Between the illumination light diffuser plate 50 that diffuses the illumination light 55 by a predetermined angle, the viewing LED 56 that emits the viewing light 57 for enhancing the visibility from the side, and the illumination LED 54 and the viewing LED 56. And a globe 48 that covers the contents of the lighting fixture 40 such as the partition wall 52, the illumination LED 54, and the visual recognition LED 56 from the outside. An illumination light transmitting portion 46 that transmits the illumination light 55 emitted from the illumination opening 53 is formed in the central portion of the globe 48, and the light emitted from the visual recognition LED 56 is formed on the side of the globe 48, and A band-shaped visible light diffusing portion 44 that diffuses the reflected light reflected by the reflecting surface 51 outside the partition wall 52 and emits the light to the side of the lighting fixture 40 is formed. The globe 48 is fixed to the case 42 through a waterproof packing 62. In the embodiment shown in FIGS. 2 and 3, the globe 48 has a thin hemispherical shape, but an oval shape, a 1/4 spherical shape, or other shapes can be used depending on the application. .

  The lighting LEDs 54 are densely soldered to the circular printed circuit board 60. The circular printed circuit board 60 is attached to the base plate 43 together with the partition wall 52 via the stud 58. An illumination light diffusion plate 50 for diffusing the illumination light 55 to some extent is also attached to the base plate 43 together with the circular printed circuit board 60 via the stud 59.

  The visual recognition LED 56 is soldered perpendicularly to the annular printed circuit board 61. Therefore, the LED 56 for visual recognition can be easily soldered to the annular printed board 61 and mass-produced using existing assembly equipment such as reflow. The light emitted from the visual LED 56 is emitted to the side of the luminaire 40 as uniform visual light 57 by the action of the reflecting surface 51 and the visual light diffusion portion 44 formed outside the partition wall 52. be able to.

  As the illumination LED 54, for example, a white high-intensity LED having 18000 mcd or more can be used. This LED 54 for illumination is a light source of the illumination light 55 for illuminating a road surface and the ground from the upper side of the support | pillar 20 (refer FIG. 1). Since this illumination light 55 requires a certain degree of directivity and a certain degree of illuminance, a light source having a narrow directivity with a light directivity of about 10 ° to 90 ° is used as the illumination LED 54 and is required. It is preferable to arrange a plurality of illumination LEDs 54 according to the illuminance. In the embodiment shown in FIGS. 2 and 3, 60 lighting LEDs 54 are arranged in the center of the lighting fixture 40 to form a lighting light source. Even when 60 lighting LEDs 54 are turned on, a set of lighting LEDs 54 is arranged in series every three balls, and a constant current drive of 20 mA is performed using a power supply voltage of 12V. , 20 sets × 20 mA × 12 V = about 4.8 W, and light emission with low power consumption can be realized.

  In addition, when the high-intensity LED having a strong directivity and a narrow directivity angle (for example, a high-intensity LED having a directivity of 90 ° or less) is used as the illumination LED 54, the illumination light 54 is irradiated with the illumination light 55. Since luminance unevenness may occur for each LED 54, an illumination light diffusion plate 50 for diffusing the illumination light 55 to some extent is preferably disposed in front of the illumination LED 54. Furthermore, the predetermined illuminance can be ensured while reducing the illuminance unevenness of the illumination light 55 by separating the distance between the illumination light diffusion plate 50 and the illumination LED 54 by about 3 mm to 10 mm. The diffusion angle of the illumination light 55 is usually preferably about 60 °, but a diffusion angle of about 30 ° to 90 ° can be used depending on the application and the distance from the lighting fixture 40 to the ground. As a light source of the illumination light 55, blue, green, red, yellow, orange, pink, purple, light bulb color, candle color, and other light emitting LEDs can be used in addition to white.

  As shown in FIG. 2, the material of the partition wall 52 that partitions between the illumination LED 54 arranged in the central portion and the visual recognition LED 56 arranged outside thereof is subjected to a drawing process on a thin plate material and diffuses light. For this purpose, a plate whose surface is painted white is used. As a surface treatment for diffusing light, it is possible to use a coating such as blue or orange in addition to a white coating. Moreover, chrome plating, vibration polishing, sticking of a diffusion sheet, etc. can be performed.

  Moreover, by using a thin plate material for the material of the partition wall 52, the illumination LED 54 and the visual recognition LED 56 can be efficiently partitioned, and the lighting fixture 40 can be made compact. In addition, by making the shape of the partition wall 52 into a tapered shape with an opening area widening toward the illumination opening 53, it is possible to prevent a part of the illumination light 55 diffusing at a predetermined angle from being blocked. The reflective surface 51 formed on the outside of the partition wall 52 efficiently reflects the visible light 57, and the visible light 57 with less luminance unevenness can be emitted to the side. In addition, by making the illumination opening 53 of the partition wall 52 in contact with the globe 48, the illumination light 55 emitted from the illumination LED 54 and the visual light 57 emitted from the visual LED 56 are separated to prevent color mixing. Can do. Thereby, the illumination light 55 is mixed with the visual light 57, the color becomes dirty, and the problem that the effect as the effect light is reduced can be prevented.

  On the other hand, in order to prevent glare from occurring in the visible light 57, it is preferable to use a color LED having a relatively low luminance of 1500 mcd or less or an LED having a color temperature of emission color of 3000 ° K or less as the visual LED 56. For example, the luminance of the visible light 57, the luminance uniformity, the light emitting area, or the light emitting color are set to predetermined conditions so that the weak light emitted by the candle and the weak light emitted by the lantern give comfort and healing to the person. By setting, it is possible to give the observer a calm atmosphere, comfort, comfort and the like. Furthermore, in order to emit various kinds of visible light 57, a plurality of colors of LED 56 for visual recognition can be arranged inside the luminaire 40. Moreover, it can also be controlled to emit the visible light 57 of a different color depending on the time and season.

  Further, when providing the viewer with a calm atmosphere, comfort, comfort, etc. using the visual light 57 emitted from the side of the luminaire 40, the visual light 57 emitted from the belt-like visual light diffusion unit 44 is provided. It is preferable to devise so that the visible light diffusing unit 44 emits the uniform visual light 57 as much as possible, while suppressing the luminance of the visual light to low luminance and reducing glare and luminance unevenness.

  For this purpose, an LED having a luminance lower than that of the illumination LED 54 is used as the visual LED 56, and a wide directivity LED having a light directivity of 100 ° or more is used. It is preferable to arrange. In the embodiment shown in FIG. 2 and FIG. 3, the visual light source is formed by evenly arranging 30 LEDs for visual recognition 56 on the outer peripheral portion of the luminaire 40.

  As shown in FIGS. 2 and 3, even when 30 viewing LEDs 56 are used for emitting the viewing light 57, one set of viewing LEDs 56 is arranged in series every 3 balls. By performing a constant current drive of 15 mA using a voltage of 12 V, it is possible to reduce power consumption to about 10 sets × 15 mA × 12 V = 1.8 W. For example, even when used in combination with the lighting LED 54 described above, it is possible to continue lighting for 14 hours at night using the power generated by the 55 W solar panel 30 during daylight.

  Further, in order to emit more uniform visual light 57, a reflection surface 51 is formed on the outer periphery of the partition wall 52 to reflect light emitted from the visual LED 56 with a wide directivity angle toward the side. When the reflecting surface 51 is made a white painted surface, embossed, or the like so that the reflected light becomes diffuse light, rather than a mirror surface that reflects light at a uniform reflection angle. Good. Further, in order to emit more uniform visual light 57, it is preferable to provide a belt-like visual light diffusing portion 44 that diffuses the light emitted from the visual LED 56 and emits it laterally outside the visual LED 56. 2 and 3 show an example in which the visible light diffusing portion 44 having the side surface height W is formed in the base portion of the globe 48. However, the visual recognition is independent from the globe 48. A light diffusion plate may be provided.

  As a material of the visible light diffusing unit 44, a transparent resin or glass can be used, and a diffusion sheet, a prism sheet, or the like can be used. When using a part of a curved surface such as the globe 48 shown in FIGS. 1 to 3 as the visible light diffusing part 44, the surface of a material such as glass or polycarbonate subjected to weathering treatment In addition, a material that has been roughened by etching or sandblasting can be used. In particular, when sandblasting is used, masking can be used to form both the transparent illumination light transmitting portion 46 and the visible light diffusing portion 44 having a roughened surface on one globe 48. .

  In addition, in order to improve the visibility from the side of the lighting fixture 40, it is preferable to widen the side surface height W (see FIG. 3) of the belt-like visible light diffusion portion 44 that emits the visible light 57. For example, the side height may be 50 mm or more. Further, in the embodiment shown in FIG. 3, the visible light diffusing portion 44 is formed on the entire circumference of the base of the globe 48 having a hemispherical shape having a diameter of about 200 mm. The side width of the formed visible light diffusing portion 44 is ensured at a maximum of 200 mm at the base of the globe 48. The side width of the visible light diffusing portion 44 is preferably secured to 50 mm or more in consideration of visibility from a distance.

  By using the lighting fixture 40 according to the present invention for a solar power street lamp 10, it is possible to illuminate the road surface and the ground at night using sunlight irradiated in the daytime and contribute to the safety of people's traffic. At the same time, the visible light can be emitted toward the side of the street light 10 to give the surrounding people a calm atmosphere, comfort, comfort and the like. Moreover, the lighting fixture 40 which concerns on this invention can be used not only as the solar-type street lamp 10 but as a low power consumption type lighting fixture.

It is a perspective view of the street light provided with the lighting fixture which concerns on this invention. It is the side view and side sectional drawing of the lighting fixture which concern on this invention. It is the bottom view which looked at the lighting fixture shown in FIG. 2 from the output side of illumination light.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Street light 14 Box 20 Prop 30 Solar panel 40 Lighting fixture 42 Case 43 Base board 44 Visible light diffusing part 46 Illuminating light transmitting part 48 Globe 50 Illuminating light diffusing plate 51 Reflecting surface 52 Bulkhead 53 Illuminating opening 54 Illuminating LED
55 Illumination light 56 LED for visual recognition
57 Visible light 58, 59 Stud 60 Circular printed circuit board 61 Annular printed circuit board 62 Packing

Claims (6)

An illumination LED (Light Emitting Diode) that emits illumination light for illuminating a road surface or the like is disposed in the center,
Visual LEDs that emit visible light to enhance visibility from the side are arranged outside the illumination LEDs,
A partition that partitions the illumination LED and the visual recognition LED is arranged,
On the outer peripheral surface of the partition wall, a reflection surface that reflects the light emitted from the visual LED toward the side is formed, and
At the open end of the partition wall, an illumination opening for emitting the illumination light is formed,
A visual light diffusing plate that diffuses the light emitted from the visual LED and the reflected light reflected by the reflective surface and emits the light to the side is disposed outside the visual LED,
As the visual recognition LED, a wide directivity LED having a luminous intensity of 1500 (milli candela) or less and a light directivity of 100 ° or more is used.
As the illumination LED, a narrow directivity LED having a light directivity of 90 ° or less is used.
An illumination light diffusion plate that diffuses illumination light is provided at a position 3 mm to 10 mm away from the LED for illumination,
A lighting device for a street light characterized by comprising   The street lighting illuminator according to claim 1, wherein the LED for visual recognition uses an LED having a lower luminance than the LED for illumination. The street light illuminator according to claim 1 or 2, wherein the visible light diffusing plate is a diffusing plate having a side height and a side width of at least 50 mm. The street lamp according to any one of claims 1 to 3 , wherein a thin plate material is used for the partition wall, and the shape of the partition wall is formed into a tapered shape with an opening area widening toward the illumination opening. lighting equipment. The illumination opening of the partition wall is inscribed, and includes a glove that covers the illumination LED and the visual recognition LED from the outside,
An illumination light transmitting portion that transmits the illumination light emitted from the illumination opening is formed at the center of the globe, and the visible light diffusing plate is formed at the side of the globe. The lighting fixture for street lamps according to any one of claims 1 to 4 . Solar panels for solar power generation,
A battery for storing electric power generated by the solar panel;
A controller that supplies power stored in the battery to the illumination LED and the visual recognition LED according to ambient brightness or time;
A lighting fixture according to any one of claims 1 to 5,
A street light characterized by comprising.

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