Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
  • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
  • F21V21/116—Fixing lighting devices to arms or standards
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S8/00—Lighting devices intended for fixed installation
  • F21S8/08—Lighting devices intended for fixed installation with a standard
  • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
  • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
  • F21V21/14—Adjustable mountings
  • F21V21/30—Pivoted housings or frames
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
  • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
  • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
  • F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
  • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
  • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
  • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
  • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
  • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
  • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V19/00—Fastening of light sources or lamp holders
  • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
  • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
  • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
  • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
  • F21W2131/10—Outdoor lighting
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
  • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
  • F21W2131/10—Outdoor lighting
  • F21W2131/103—Outdoor lighting of streets or roads
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
  • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2115/00—Light-generating elements of semiconductor light sources
  • F21Y2115/10—Light-emitting diodes [LED]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
  • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

Definitions

• the present invention refers to a street lighting device, such as for example a lamp, a streetlamp, a lamp post or the like, provided with a light source including LEDs (Light Emitting Diodes), to light a surface such as a road surface or more in general an urban or extra-urban area.
• a light source including LEDs (Light Emitting Diodes)
• the lighting device according to the present invention is configured to light in a targeted and substantially uniform manner the road surface, or the surface to light, within a determinate field of action, normally called span.
• This type of known lamp in particular those using sodium gas, emit a light which tends toward yellow on the surface to be illuminated and they have high nominal energy consumption, and therefore high costs.
• the gas lamps normally used tend to lose their performance levels very quickly with use, determining a progressive increase in consumption and a reduction in their lighting potential.
• To reduce the costs of management in the case for example of application to street surfaces where there is a plurality of devices in a row, one after the other, it is known to use only some of the lighting devices provided, above all during the hours when there is less traffic.
• gas lamps normally generate a light cone, the projection of which onto the surface to be illuminated has a diffusion of light which progressively decreases from the center toward the peripheral part.
• the progressive reduction of light intensity of the peripheral part of the cone projected onto the surface to be illuminated exceeds 50% of the light intensity of the central part.
• One purpose of the present invention is to achieve a lighting device which, given the same lighting cover, has both lower production and management costs and energy consumption compared to gas or incandescent lamps.
• Another purpose of the present invention is to achieve a lighting device which carries out a substantially uniform lighting of a determinate surface to be illuminated, comparable or even larger than the surfaces normally covered by traditional lamps.
• the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
• a lighting device comprises a support structure which supports one or more groups of LEDs able to emit relative light beams, to light a determinate surface.
• the support structure is able to be coupled with a post or other supporting structure, so as to be kept by the latter in a suspended state above the surface to be illuminated.
• the lighting device according to the present invention also comprises one or more arms disposed independent and individually directed or directable with respect to the support structure. Each arm is able to support at least a group of LEDs.
• group of LEDs we mean a variable number from 2 and 20, advantageously from 2 to 1O 3 even more advantageously from 2 to 6.
• the lighting device comprises a plurality of optic members each of which is associated with at least a relative one of the LEDs of each group.
• Each optic member has a determinate degree of collimation, in order to direct the light emitted by the relative LED in a specific and uniform manner, in a determinate sector of the surface to be illuminated.
• the lighting device according to the present invention as well as having a lower energy consumption, and therefore management costs, than known devices with gas lamps, also has reduced production costs, given the same surface illuminated, compared with known devices which use LEDs.
• each arm is mounted on the support structure and directed with respect to the latter by means of fixed positioning elements, such as spacers, wedges or the like which determine a pre-defined position of each arm with respect to the support structure.
• each arm is mounted on the support structure by means of adjustment means able to be selectively and individually actuated so as to adjust the position of each individual arm with respect to the support structure.
• the adjustment means are conformed to allow the selective adjustment of the arms with respect to one, two or more axes,
• the support structure and the arms are integrated in a single pre-snaped structure, depending on the specific application of the lighting device.
• each arm on one same support structure a plurality of arms are provided, each directed in a different way with respect to the others.
• the arms have equivalent or specular directions, depending on the relative sector to be illuminated.
• each arm is rigid.
• each arm is at least partially flexible, bendable or articulated.
• each arm supports between 3 and 12 LEDs subdivided, and independently fed, into distinct sub-groups formed by a limited number of LEDs.
• At least the LEDs of one same sub-group have the relative optic members with equivalent degrees of collimation.
• each LED is associated with an optic member with a different degree of collimation with respect to the others.
• the optic members associated with the LEDs of these arms also have an equivalent degree of collimation depending on the relative sector to be illuminated.
• the support structure comprises at the lower part a connection element for connection to a supporting post.
• the connecting dement has an elastically deformable transverse section, so as to be able to adapt efficiently to different sections of the post or other supporting structures, and therefore to be easily installed even in pre-existing plants.
• a method to make a lighting device provides to dispose a plurality of directable arms inside which a plurality of
• LEDs are housed, and to associate with each LED a relative optic member so that the resulting light beams emitted by all the LEDs of the device determine a light emission which is substantially uniform with a luminosity at a minimum of 50% between maximum and minimum intensity inside the field of action of the device when it is in use.
• - fig. 2 shows a front view of an enlarged detail of the lighting device in fig.1 ;
• - fig. 3 shows a cross section of an arm of the lighting device in fig.1 ;
• - fig. 4 shows a lateral view of the detail in f ⁇ g.2
• - fig. 5 is a graphic representation of an example of light projection carried out with two lighting devices according to the invention disposed adjacent to each other;
• - fig 6 shows a front view of a second form of embodiment of the lighting device according to the present invention
• - fig 7 shows a view from above of a third form of embodiment of the lighting device according to the invention
• - fig. 8 shows a section along the line VIII-VIII of flg.7;
• - fig. 9 shows a section along the line IX-DC of fig.7;
• - fig. 10 shows a section along the line X-X of fig.7; - fig. 11 shows a section along the line XI-XI of fig. 7
• a lighting device 10 is in this case applied for lighting a roadway I i.
• a plurality of lighting devices disposed one after another along the edge of said roadway 11 are provided.
• the lighting device 10 comprises a supporting post 12 installed along the edge of said roadway 11, and an arched support structure 13, mounted at an upper end of the supporting post 12, and able to support a plurality of LEDs 15 at a height of between 6 meters and about 10 meters from the roadway 11.
• the mounting of the support structure 13 to the supporting post 12 occurs by means of the coaxial insertion of a tubular connector 17 of the support structure 13 on the end of the supporting post 12,
• tubular connector 17 has a longitudinal notch 18 which allows a slight elastic deformation thereof, so that it adheres better to the end of the supporting post 12 and guarantees a safe and effective assembly.
• the lighting device 10 also comprises a plurality of arms 16. in this case nine having an elongated shape, and each of which supports a group of LEDs 15. In this case, a group of six LEDs 15 are provided, disposed in a row for every arm 16.
• Each arm 16 also comprises a transparent protection cover 22, attached to the arm 16 with relative packings, so as to guarantee a degree of safety at least equal to class IP65.
• each group of LEDs 15 is divided into two sub-groups of three LEDs 15 each, commanded and fed with a relative tension regulator 19, in an independent manner from the other sub-groups.
• the LEDs 15 are equal to each other and are of the type fed at 24 V able to emit a cold white light with a luminosity comprised between about 70 lumen/watt and about 100 lumen/watt.
• the choice of these LEDs 15 allows to use back-up batteries, with the relative advantages of safety and guarantee of supply, even in the event of a blackout of the power network.
• a relative collimation lens 21 is associated with each LED 15, which, depending on the specific sector of the surface S to which the light beam is directed from the LED 15, has a different degree of opening.
• Table 1 shows a possible configuration of the degrees of opening of the specific collimation lenses 21 for each LED 15,
• Each arm 16 is mounted on the support structure 13 according to a determinate and specific direction, so as to direct the beams of light emitted by the respective LEDs 15 according to a pre-defined direction,
• the nine arms 16 are attached to the support structure 13 by means of specific spacers 20, which, together with the arched shape of the support structure 13, determine the specific fixed directions of each arm 16.
• the nine arms 16 have a substantially specular direction with respect to a hypothetical median vertical axis of the support structure 13.
• the first arm 16 has an inclination of about 45°-55° with respect to the axis x and about 5°-10° with respect to the axis y;
• the second arm 16 has an inclination of about 45°-55° with respect to the axis x and about 20°-25° with respect to the axis y;
• the third arm 16 has an inclination of about 30°-40° with respect to the axis x and about 15°-20°with respect to the axis y;
• the fourth arm 16 has an inclination of about 15°-25° with respect to the axis x and about 20°-25° with respect to the axis y;
• the fifth arm 16 has an inclination of 0° with respect to the axis x and about 20°-25° with respect to the axis y.
• the sixth, seventh, eighth and ninth arms 16, as we said, have a direction specular to the respective fourth, third, second and first arms 16, In this way, the group of LEDs 15 mounted on each arm 16, assisted by the relative colliraation lenses 21, emit corresponding beams of light in a targeted and specific manner, allowing to light a determinate surface S on the roadway 11 5 in this case, having an area equal to about 25x6.5 meters.
• Applicant has found that an embodiment which comes within the parameters illustrated until now is able to light the surface S with a usable luminosity comprised between about 20 Lux and about 10 Lux.
• Fig. 5 shows a graphic representation of the luminous projection of two lighting devices 10 disposed at about 25 meters distant from each other.
• the usable luminosity is comprised between about 10 Lux and about 15 Lux, that is, with a luminosity which, with respect to the better illuminated areas, assumes a value of about 50%-75%.
• the lighting device 10 also comprises a control unit 23, for example disposed interred in a relative draining well, and able to automatically command the switching on and off of the relative lighting device 10, depending on the hours of dawn or dusk programmed or programmable,
• the switching on and off of the lighting device 10 are commanded by a crepuscular switch 25, for example mounted on the supporting post 12 (fig. I), and associated electronically to the control unit 23.
• the control unit 23 is also configured to command the modulation of the light emission of the LEDs 15, so as to reduce this intensity when there is sufficient environmental light, for example just after dusk, during the day but when the sky is very cloudy, at night when traffic is reduced to below a certain threshold, or other. Inversely, the control unit 23 commands an increase in the lighting intensity, for example during demonstrations or other events.
• control unit 23 is configured for possible interface with presence sensors, for example to activate the lighting of a cycle path only when it is used, that is, detecting the passage of a user when he/she is less than 10 meters from the lighting device,
• control unit 23 is also suitable to be programmed and controlled from a remote station connected with a direct serial cable connection, infra-red rays, WiFi technology or other.
• the support structure in this case indicated in its entirety by the reference number 113, comprises, integrated with it, the arras 116 with the relative JLEDs 15.
• the arms 116 are directed or directable in a specific manner and the colUmation lenses 21 associated with the LEDs 15 have a specific degree of colUmation according to the relative sector to be illuminated.
• the lighting device is contained in a fixture 26 of a substantially spherical shape.
• each arm 216 is provided, each supporting a group of LEDs 15 and disposed to occupy half of the internal volume of the fixture 26. It cannot be excluded, however, in alternative solutions, that an equal number of arms 216 are provided in a specular manner, to occupy the whole volume of the fixture 26,
• each arm 216 has a bent development, or in any case not linear, so as to direct each individual LED 15 supported differently.
• each arm 16 is mounted on the relative support structure 13 by means of an adjustment and/or articulation mechanism.
• the adjustment mechanism can be conformed to provide an adjustment on one, two or more axes.
• each arm 16 is conformed so as to be able to be at least partly bent or articulated. In this way, it is possible to direct the different subgroups of LEDs 15 of the same arm 16, in different sectors of the surface S to be illuminated. It also comes within the field of the present invention to provide that the whole lighting device is fed by a photovoltaic energy accumulation plant using solar panels.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40292058

Family Applications (1)

Country Status (2)

Cited By (8)

Citations (5)

• 2008
  • 2008-02-18 IT IT000032A patent/ITUD20080032A1/it unknown
• 2009
  • 2009-02-16 WO PCT/IB2009/000273 patent/WO2009104067A1/en active Application Filing

Patent Citations (7)

Also Published As

Similar Documents

Legal Events