Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

294results about "Pavement lights" patented technology

Heat sink, light source unit and lighting fixture

To provide a heat sink and the like capable of improving the degree of arrangement freedom of a fin in a base part, while maintaining a desired heat radiation property.SOLUTION: A heat sink 100 includes: a base part 10 which has a first surface 10a and a second surface 10b which is a surface on the opposite side from the first surface 10a; and a plurality of fins 20 fixed to the second surface 10b of the base part 10. Each of the plurality of fins 20 includes a long bottom surface part 21, and a side surface part 22 standing from an end part in the shorter direction of the bottom surface part 21, and at least at one bottom surface part 21 out of the plurality of fins 20, one or more cutout parts 23 are provided. At the second surface 10b of the base part 10, a connection part is provided for connecting components, and when the base part 10 is viewed in a plan view, the cutout parts 23 are arranged so as to overlap at least one of the connection parts.SELECTED DRAWING: Figure 7
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Photovoltaic floor tile

PendingCN119571690AEasy surface cleaningWith anti-slip effectPhotovoltaic supportsSingle unit pavingsIsosceles trapezoidStructural engineering
The photovoltaic floor tile comprises a frame, the frame is of a regular hexagon structure, supporting legs are arranged on the lower portion of the frame, an upper cover plate is fixedly arranged at the upper end of the frame, the upper cover plate is made of thermoplastic transparent plastic, a plurality of protruding strips with the cross sections being isosceles trapezoids are arranged on the upper end face of the upper cover plate, and the cross sections of the protruding strips are isosceles trapezoids. The lower end of the frame is fixedly connected with a bottom shell, the middle of the bottom shell protrudes upwards, a groove is formed in the middle of the protrusion, the groove is filled with a photovoltaic substrate, tempered glass is arranged between the photovoltaic substrate and the upper cover plate, and the edge of the protrusion supports the edge of the lower portion of the tempered glass. The photovoltaic floor tile is antiskid, and the upper cover plate of the photovoltaic floor tile is easy to clean, maintain and replace.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Electronic necklace comprising a projector medallion and method of formation thereof

An electronic necklace comprising a projector medallion and associated methods of formation are described, and more particularly to an electronic necklace with one power source for powering a projector medallion and necklace bulbs and its associated methods of formation. In one embodiment, an apparatus may include a wire serving as a necklace strand with a projector medallion formed of a translucent material including a backside, a front side, an underside, and / or an interior. The necklace may include a power source in the form of a battery. The necklace may include a projector light and / or a medallion light within the interior of the projector medallion. The necklace may include a control chip within the interior of the projector medallion that may distribute power from the battery to the wire, the projector light, and / or the medallion light.
Owner:SHAWSHANK LEDZ INC

Outdoor step lamp

Disclosed in the present disclosure is an outdoor step lamp. The outdoor step lamp includes a housing, where an opening is formed at a lower end of the housing, and a cover plate is arranged at the opening of the lower end of the housing. A lamp panel is arranged in the housing, and a control chip and lamp beads that are electrically connected are arranged on the lamp pane. According to the present disclosure, light emitted from the lamp beads is transmitted out through a circular arch top wall, and the light forms a long strip shape that is mapped on a step surface. When the step lamp provided by the present disclosure is mounted on the step, occupied space in a lengthwise direction of a step is small, and impact on walking of people on the step is also minor.
Owner:ZHOU XINSHENG

Smart modular street and sidewalk

A modular system for streets formed of a top module, a bottom module, an internal cavity formed within the bottom module,cables positioned within said bottom module, a computing device,sensors operatively associated with said computing device, andcommunications hardware configured to communicate information from said sensors to a second computing device positioned exterior to said modular system.
Owner:SIMOVICH GUILLERMO DAVID

Solar outdoor lamp

The solar outdoor lamp comprises a solar light module 40 including a circuit board 41, a plurality of LED lights 42, a solar panel 43 and a battery 44. The solar light module is disposed between a base 10 and a translucent lampshade 20, with a waterproof gasket 30 preventing moisture ingress. The lamp further comprises a positioning plate 50 (e.g., for fixing to a wall) and a plug-in part 60 comprising two triangular plates 61 combined to form a tapered cross-shape (e.g., a ground spike). The positioning plate includes arcuate slots 52 for receiving snap hooks of the base, and the plug-in part includes posts 62 for insertion in plug holes on the base, optionally after passing through corresponding holes 53 in the positioning plate. The positioning plate and plug-in part can be used separately or in combination. The gasket may be installed in a circular slot of the base or may abut an outer periphery of the circuit board.
Owner:METROMAX AMERICA CORPORATION

A helicopter landing assist system

The present invention discloses a helicopter pad landing assist system, comprising a pad surface and a signal mechanism. The pad surface is composed of an inner pad surface and an outer pad surface, and a mark is provided in the middle of the inner pad surface. The signal mechanism is composed of an adjustment component of a convertible signaler or signal light and a movable component that can keep the adjustment component hidden. The helicopter pad landing assist system can protect the signal mechanism and can also provide installation of different signal lights or signalers, which can be used at the same time, making it convenient for component installation and angle adjustment. At the same time, the signal mechanism can be hidden and opened through a drive assembly, which can effectively reduce the structural layout, realize the protection of the signal mechanism, help to extend the service life of each component, reduce the probability of component damage, and help the helicopter to automatically center and land.
Owner:NINGBO TAIYI AVIATION TECH CO LTD

Power transmission structure for road

To provide a power transmission structure for a road and a pavement block that eliminate the need for wiring work between the pavement blocks even when power is transmitted from a power source to a load via the pavement block forming the road.SOLUTION: When power is transmitted from a power source to a load via a road formed by laying pavement blocks 8, wireless power supply is used for power transmission between the pavement blocks 8. When an electromagnetic inductive method is used as the wireless power supply, a power supply connection block 20 that receives an alternating current from an AC power supply 6 generates an electro-motive force in a path forming member 53e and transmits power. A plurality of load blocks 30f, 30g and a plurality of load blocks 30h, 30i are respectively disposed on side surfaces of a relay block 80. The path forming members 53f to 53i are connected in parallel to a path forming member 53e, generate electromotive forces in the path forming members of the load blocks 30 disposed at opposite positions, and transmit electric power sent from the path forming member 53e.SELECTED DRAWING: Figure 10
Owner:KK TOYOTA CHUO KENKYUSHO

Breakage-proof traffic signal glass lampshade

The utility model provides an anti-breaking traffic signal glass lampshade which comprises a device instrument, a traffic signal lamp is arranged on the inner wall of the side end of a fixing frame, a limiting installation plate is arranged on the inner wall of the side end of the device instrument, installation holes are formed in the inner walls of the side ends of the limiting installation plate, and limiting plates are arranged on the inner walls of the side ends of the installation holes. The inner wall of the side end of the limiting plate is provided with tightening teeth, the inner wall of the side end of the limiting plate is provided with a mounting frame, the inner wall of the side end of the mounting frame is provided with a mounting plate, the outer surface of the mounting plate is provided with tightening clamping grooves, and the inner wall of the mounting frame is provided with a glass lampshade; and telescopic rods are arranged on the inner walls of the two ends of the limiting mounting plate. According to the anti-breaking traffic signal glass lampshade provided by the utility model, a traffic signal lamp is protected through the detachable glass lampshade, and meanwhile, a worker can conveniently and rapidly rotate the glass lampshade so as to carry out mounting and dismounting treatment.
Owner:QIDONG JINGYAO OPTOELECTRONIC TECH CO LTD

Lightweight phosphorescent strip

A phosphorescent composition is provided. The composition includes clear polymer and phosphorescent pigment dispersed in the clear polymer. About 5% to about 40% of the phosphorescent pigment is loaded in the clear polymer.
Owner:PEXCO AEROSPACE INC

Multiple streetlight system and method of operating the system

The invention relates to a system with a plurality of street lamps, wherein the street lamps are networked with one another, wherein the street lamps each have solar modules (4) for generating electricity and each have integrated accumulators (2) for storing electricity and each have a control system (7) for regulated electricity output and consumption (control energy), wherein the electricity generated by means of the solar modules (4) can be fed into the public electricity grid (19) as well as via a charging device (8), e.g. a wall box, into mobile accumulators (10) connected thereto, in particular into electric vehicles, wherein each street lamp has a radio module (5) and is connected or can be connected to a power line connection (6) and a fiber optic connection (9). The system is improved by the fact that a central system control (14) is provided for the street lamps, whereby the street lamps record all their relevant electricity usage data, such as time, date, season, temporally recurring electricity load, outage and the like, by means of sensors and transmit them to the central system control (14), whereby a central, comprehensive demand forecast can be created from this metadata by means of the system control (14), whereby all relevant metadata of the electricity usage can be centrally evaluated by means of the system control (14), in particular also via an intelligent, self-learning AI, whereby corresponding predictive demand and usage profiles can be created for each individual connected street lamp and intelligent control commands can be transmitted to the individual control systems (7) in the street lamps, with the aim of the street lamps as a whole adapting to the respective daily,prepare and adjust for recurring or seasonal fluctuations by controlling the power storage states.
Owner:HOSEIT WINRICH

Luminous floor tile

The utility model relates to a luminous floor tile which comprises a tile body, the tile body is provided with an installation groove which is arranged in a penetrating mode in the horizontal direction, and a lamp strip is installed in the installation groove in a penetrating mode. The base is attached to the bottom of the brick body in the vertical direction, a wire passing groove is formed in one side of the base, the wire passing groove is connected with the tail end of the mounting groove, and a lead connected with the lamp strip is mounted in the wire passing groove; the adhesive tape layer wraps and is attached to the periphery of the tile body and the periphery of the base in the vertical direction, the adhesive tape layer is made of an elastic material, and the adhesive tape layer is used for filling a gap between the light-emitting floor tile and the ground after the light-emitting floor tile is installed in the ground. By means of the brick body and the base which are arranged in an attached mode, higher bearing strength is achieved, the adhesive tape layer wraps the periphery of the brick body and the base, the integrating degree of the brick body and the ground is high, and material decay and structure looseness caused by rainwater permeation are avoided.
Owner:SUZHOU DISHU NEW MATERIAL TECH CO LTD

Directional self-luminous pavement and preparation method thereof

The invention discloses a directional self-luminous pavement and a preparation method thereof, and relates to the technical field of road safety and guidance. The directional self-luminous pavement comprises the following components in parts by weight: 9-11 parts of epoxy resin modified asphalt, 5-7 parts of a transparent polymer binder, 3-5 parts of a fluorescent material, 1-2 parts of a cement-based binder, 1-2 parts of an unsaturated polyester resin adhesive, 80-90 parts of aggregate, 1-2 parts of ethanol and 1-2 parts of epichlorohydrin. The invention also provides a preparation method of the directional self-luminous pavement, the directional fluorescent pavement has excellent luminous capability and anti-skid performance, the durability of the pavement is improved, and the temperature of the pavement is reduced; the problem that the vehicle visual identification sensor is difficult to obtain accurate road surface information due to poor light conditions and low environment identification degree is effectively solved.
Owner:KUNMING UNIV OF SCI & TECH

Luminous spike capable of improving visibility

A spike according to an embodiment of the present invention may comprise: a housing part forming an internal space; a main light-emitting unit which is disposed in the internal space and emits light; a solar cell which is disposed in the internal space and generates electric power by means of sunlight so as to supply electric power to the main light-emitting unit; and a light guide plate disposed in the internal space and disposed on the upper side in the height direction of the solar cells.
Owner:G&I TECH CO LTD

Quick insertion type evacuation indicating lamp

The utility model discloses a quick insertion type evacuation indicating lamp, and relates to the technical field of indicating lamps. The indicating lamp comprises a bottom box and an indicating lamp body, an aviation male plug is arranged on the inner wall of the bottom box, an aviation female plug corresponding to the aviation male plug is arranged on one side of the indicating lamp body, and a cover frame is sleeved on one side of the indicating lamp body. According to the utility model, the push pin is pushed by fingers, the push pin extrudes the limiting pin to slide, the limiting pin is driven to slide out of the limiting groove, and then the cover frame and the indicator lamp body are pulled to slide, so that the aviation female plug is separated from the aviation male plug, the indicator lamp body is conveniently and quickly taken out, and then a new indicator lamp body is pushed into the bottom box through the cover frame. An aviation female plug on the indicator lamp body is connected with an aviation male plug in the bottom box, and a limiting pin is clamped into a limiting groove, so that the indicator lamp body is conveniently and quickly replaced, the convenience of replacing the indicator lamp body is conveniently improved, the replacement efficiency of the indicator lamp body is conveniently improved, and the staying time of workers in a tunnel is conveniently shortened.
Owner:XIANJU BRANCH OF ZHEJIANG ZHUYONG EXPRESSWAY CO LTD

Floor plate

The invention relates to a lining panel (1), an installation rail (50) for a lining panel (1), and a routing system (70) with a lining panel (1) and with an installation rail (50). In order to be able to easily install the routing system (70) and provide indications in a flexible manner, the lining panel (1) has translucent portions (9 - 14) which can be selectively backlit by an illuminant (20) in order to make the indications visible on the surface of the lining panel (1).
Owner:SIUT GMBH

Functionalized structure intended to be fixed on a roadway

The invention relates to a functionalized structure (2) intended to be fixed to a trafficable surface (200), comprising: - an interface layer (20), and - at least one functionalized slab (100) placed on the interface layer (20), the functionalized slab having a thickness less than or equal to 10 millimeters, the interface layer (20) and the functionalized slab (100) being fixed to the trafficable surface (200) by means of at least one fixing means (30, 30A) configured to cooperate with a part of the functionalized structure (2) such that a surface of cooperation between the fixing means (30, 30A) and a face (100A) of the functionalized structure (2) is less than 20% of the total surface of said face (100A) of the functionalized structure (2). Figure for abstract: Fig. 4
Owner:COLAS LTD +1

Optical conductor and automobile atmosphere lamp

The utility model relates to the technical field of light guides, and provides a light guide and an automobile atmosphere lamp. The light guide body is in a long strip shape and comprises a light inlet face and a light guide section, the light inlet face is located at one end of the light guide body in the length direction, the light guide section is perpendicular to the length direction and comprises a reflection curved surface and light outlet curved surfaces, and the light outlet curved surfaces surround the reflection curved surface and are arranged at intervals. Light enters the light conductor through the light-in surface, is dispersed and reflected to the light-out curved surface through the reflection curved surface, and finally is dispersed and emitted through the light-out curved surface. Light entering the photoconductor is doubly dispersed through the reflection curved surface and the light-emitting curved surface, so that emergent light is not limited to a small emergent area any more, the wide irradiation area is achieved, the technical problem that the emergent area of an existing photoconductor is small is solved, and due to the fact that the light is dispersed on the reflection curved surface and the light-emitting curved surface for many times, the light-emitting effect is improved. And the emitted light is more uniform.
Owner:SHENZHEN BAIKANG OPTICAL

Combined road information and warning device

A street information and warning device, including a pedestrian traffic light, comprising a two-part housing with at least one rigidly attached semi-transparent protective screen and internal light sources in the form of LED matrices mounted on circuit boards and equipped with an electronic control circuit, wherein an LED matrix is ​​arranged in the upper part, composed of red fluorescent diodes forming a stylized figure of a "standing person", and green fluorescent diodes forming a digital display with a countdown of the time in seconds, while an LED matrix is ​​arranged in the lower part, composed of green fluorescent diodes, the design of which makes it possible to form a figure of a "walking person", characterized in that it additionally comprises a lighting device.whose housing is installed in the lower part of the pedestrian traffic light body and contains internal light sources in the form of ultra-bright LEDs arranged on circuit boards and equipped with an electronic control circuit; wherein at least one LED is installed on the front surface of the housing of the lighting device, capable of forming a beam angle-adjustable light flow towards the road marking area of ​​the pedestrian crossing, and at least one LED is installed on the underside of the housing of the lighting device, capable of forming the light flow towards the pedestrian waiting area located below the information and warning device, . wherein screens with a protruding rounded surface are attached to the sides of the housing of the lighting device, which serve to prevent the drivers from being dazzled by LEDs, wherein longitudinal guide grooves with rounded surfaces are provided on the inside of the screens for moving a flexible curtain, which have diagonal grooves along their length for fixing the curtain in a position, This ensures an adjustable partial overlap of LEDs to achieve the required angle of light flux dispersion towards the road marking area of ​​the pedestrian crossing.
Owner:SENYUSHKINA MARINA SERGEYEVNA POS KARACHIKHA

Rescue emergency lamp

ActiveCN224188455UEnsure effective coverageavoid visual distractionsLighting support devicesPavement lightsBattery chargeIn vehicle
The utility model discloses a rescue emergency lamp, and belongs to the technical field of emergency lamps. Comprising a lampshade, LED lamp beads are installed in the lampshade, an end cover is installed at the top of the lampshade, a switch is embedded in the center of the top face of the end cover, a base is installed on the bottom face of the end cover, a storage battery is installed in the base, a charging interface is embedded in the side face of the base, the LED lamp beads, the switch, the storage battery and the charging interface are electrically connected, and an anti-dazzle cover is adsorbed to the top of the base. A plurality of honeycomb-shaped open holes are formed in the surface of the anti-dazzle cover, and a fixing piece is installed on the bottom face of the base and adsorbed to the top of a vehicle. According to the emergency lamp applied to rescue, light rays are dispersed through the honeycomb-shaped holes so as to increase the shading angle, and the purpose of reducing glare can be finally achieved due to the fact that the larger the shading angle is, the smaller the glare value is.
Owner:DONGGUAN CHONGGUANG PHOTOELECTRIC TECH CO LTD

Functional device with direct electrical outputs and method for manufacturing such a functional device

The invention relates to a functional device (100) comprising a multilayer stack successively including: - a first protective film (101) disposed on the front face of said device (100), - an encapsulating assembly (107), - a second protective film (105) disposed on the rear face of the device, - at least one electrically or optically active element (110) being embedded in the encapsulating assembly, and - an electrical connection element (160) directly connected to said electrically or optically active element and adapted to carry electricity from or to said electrically or optically active element, one end (162) of said electrical connection element exiting directly from said functional device.According to the invention, the electrical connection element is integrated into the stack and comprises an outer sheath free of halogen elements and one end of which exits directly from the functional device, so as to eliminate the need for an intermediate junction box on the front or rear face of the functional device (100). Figure for the abstract: Fig. 1.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES +1

Subsea tunnel entrance self-adaptive shading shed and multi-dimensional rhythm induction system

The invention relates to a subsea tunnel entrance self-adaptive shading shed and a multi-dimensional rhythm induction system, the subsea tunnel entrance self-adaptive shading shed comprises a shading shed and a ceiling which are connected into a whole, the shading shed is arranged at a subsea tunnel entrance, and the ceiling is arranged at the top of a subsea tunnel. The system further comprises an upper optical rhythm shading shed induction device, a middle lower side wall dynamic rhythm device, a road surface induction device and a multi-mode sensing device. The upper optical rhythm shading shed induction device is arranged on a shading shed and extends to a ceiling, the lower middle side wall dynamic rhythm device is arranged on the side wall of the front end of an entrance of a subsea tunnel and extends to the side wall in the subsea tunnel, and the road surface induction device is arranged on the ground of the front end of the entrance of the subsea tunnel and extends to the ground of the subsea tunnel. And the multi-mode sensing device is arranged on the ground at the entrance of the subsea tunnel. According to the invention, smooth transition of the visual field brightness of the driver, speed adaptive adjustment and attention focusing are realized, and the target of reducing the traffic accident rate of the tunnel entrance section is finally achieved.
Owner:WUHAN UNIV OF TECH

Lighting system, lighting device used in said lighting system, and unmanned aerial vehicle

To provide an illumination system in which an unmanned flying object can be more easily and firmly fixed to a landing base and an illumination device used in the illumination system.SOLUTION: An illumination system 1 comprises: an unmanned flying object 20; and an illumination device 10 having a lamp fitting 120 which can emit light and a landing base 130 on which the unmanned flying object 20 is landed. The landing base 130 includes a landing surface 130a on which the unmanned flying object 20 is landed. The landing base 130 also includes a first electromagnet device 131 which can generate the magnetic force from the landing surface 130a. The unmanned flying object 20 includes a second electromagnet device 211 which can generate the magnetic force. When the mutually-attracting magnetic forces are generated in the first electromagnet device 131 and the second electromagnet device 211, the unmanned flying object 20 is fixed on the landing surface 130a.SELECTED DRAWING: Figure 3
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Decorative drainage well lid

The utility model relates to the technical field of garden engineering, and discloses a decorative drainage well lid which comprises a fixing ring, the surface of the fixing ring is in lap joint with a well lid body, a groove is formed in the edge of the surface of the well lid body, the inner wall of the groove is fixedly connected with a solar cell panel, the inner bottom wall of the groove is fixedly connected with a storage battery, and the storage battery is fixedly connected with a water tank. The solar cell panel is electrically connected with the storage battery. According to the decorative drainage well lid, through the arrangement of a water guide pipe, a servo motor, a round rod A, a gear A, a gear B and a cutting piece, when it rains heavily, a worker opens a sealing cover, then the worker starts a power source of the servo motor, the servo motor starts to drive the round rod A to rotate, the round rod A drives the gear A to rotate, the gear A rotates to enable the gear B to rotate, and the cutting piece cuts off the cutting piece; and a gear B rotates to enable a round rod B to rotate, and through rotation of a round rod A and a round rod B, fragments on the surface smash the garbage, and then the blocking condition is avoided.
Owner:田刚志

Lamplight interaction device with induction function and landscape road

The utility model relates to a lamplight interaction device with an induction function and a landscape road. The lamplight interaction device comprises a pedal component, a plurality of supporting components, a pressure power generation component, at least one lamplight component, an induction component and a control component. The device has the advantages that by arranging the lamplight component, the sensing component and the control component, the pressure received by the pedal component can be monitored in real time, the lamplight component is turned on by the control component under the condition that the pedal component receives the pressure, the brightening speed of the lamplight component is adjusted according to the change of pressure information, and interaction with pedestrians is achieved; and by arranging the pressure power generation component, power generation operation can be performed through treading of pedestrians, so that electric energy can be provided for the whole device, the requirement for traditional energy can be eliminated, the environmental protection property can be improved, and the use cost can be reduced.
Owner:SHANGHAI URBAN ARCHITECTURE DESIGN CO LTD

Longitudinal and transverse reciprocating steering-free vehicle carrier

The vehicle carrier comprises a carrier body, a longitudinal driving assembly, a transverse driving assembly, a driving switching assembly, a longitudinal guide assembly, a transverse guide assembly, a longitudinal displacement detection assembly, a transverse displacement detection assembly and a control device, the vehicle carrier does not have steering action in the back-and-forth displacement process between the longitudinally-arranged parking space and the transversely-arranged lane, the rotation step, the transverse displacement distance, the occupied lane area and the running time in the prior art are reduced, the displacement running speed can be increased through guide rail rigid guiding, and the accumulated running time is at least reduced by one third; in addition, various schemes of the safety warning unit visible on the lane are provided for selection, and the running safety is improved. Dynamically photographed pictures are compared with the display outline of the ground warning unit, so that the technical means of preventing obstacles from invading an operation area is adopted, and the operation safety is ensured; based on accurate positioning of rigid guidance, direct-current power supply can be adopted, and automatic charging is achieved; the technical scheme of the invention has the remarkable advantages of low cost, high operation efficiency, safety, reliability and wide adaptability.
Owner:FOSHAN NUOYING TECHNOLOGY CO LTD

Light-emitting devices, lighting fixtures and street lights

To provide a light-emitting device that emits a light in which scattering is suppressed, a lighting fixture, and a street light.SOLUTION: A light-emitting device comprises: a light emission element having a light emitting peak wavelength within a range of 400nm or more and 490nm or less; and a first fluorescence substance having the light emitting peak wavelength within a range of 570nm or more and 680nm or less. In the light-emitting device, at the time when an effective discharge luminance of the light emission of the light-emitting device of the range of 300nm or more and 800nm or less in consideration of a scattering strength curvature against a wavelength is B when a correlation color temperature is 1950K or less, an average color rendering evaluation index Ra is 70 or more, a luminance of the light emission of the light-emitting device of a range of 300nm or more and 800nm or less in consideration of a photopic vision reference ratio view feeling level of a human regulated by the CIE (International Commission on Illumination) is L, a scattering strength of a rayleigh scattering in 300nm of a wavelength is 1, a first scattering level index B / L of the effective discharge luminance B to the luminance L is 0.151 or less.SELECTED DRAWING: Figure 4
Owner:NICHIA CORP