244 results about "LED filament" patented technology

An LED filament lamp emits lamp light of a third correlated color temperature, CCT3. An LED filament light source emits LED filament light of a first correlated color temperature, CCT1, of a first light intensity, I1, and a first luminous flux, LF1. A transparent envelope at least partly encloses the LED filament light source. A further LED light source provides further LED light of a second correlated color temperature, CCT2, a second light intensity, I2, and a second luminous flux, LF2. The further LED light source provides the further LED light to the envelope. The envelope is a light emitting structure configured to emit the further LED light and to transmit the LED filament light. The lamp light thus comprises one or more of the LED filament light and the further LED light and CCT1≤2500K, 8000K≥CCT2≥3500K and 2≥LF1 / LF2≥0.5, wherein CCT1, CCT2 and LF1 / LF2 are chosen such that 3400K≥CCT3≥2600K.

An LED light filament includes an LED section, first and second conductive electrodes, and a conductive portion. The LED section includes LED chips. The first conductive electrode and the second conductive electrode are disposed at two ends of the LED section. The conductive portion is electrically connected between the LED chips. An LED chip among the LED chips has an electrical connecting portion, an end portion of the conductive portion is connected to the electrical connecting portion, the conductive portion has a first bent portion and a second bent portion. The conductive portion extends from the electrical connecting portion along a first direction of the LED chip, toward a second direction of the LED chip through the first bent portion, and toward a third direction of the LED chip through the second bent portion, and the first to third directions are different directions. An LED light bulb is also provided.

The invention relates to the technical field of intelligent lighting control, and provides an LED filament dimming method and system based on artificial intelligence, and the method comprises the steps: obtaining a nonlinear multi-segment function dimming model and a dimming type of each LED filament according to a light output characteristic curve; optimizing a dimming model step by step through an adaptive condition, and adding sub-models which do not meet the condition into a subset; and after collecting ambient light data, comparing the ambient light data with the to-be-dimmed model and the subset, screening a minimum model set, and generating a dimming result by combining the matching relationship with the dimming type. Wherein the dimming types comprise brightness enhancement / weakening, and the optimization process comprises the steps of splitting a sub-model by key points, and recording parameters such as light intensity and color temperature range; temporarily storing the sensor when the ambient light data is abnormal; and finally, judging a matching relationship through an interpolation method, outputting a normal / abnormal result and recording abnormal information. According to the invention, the dimming accuracy and response efficiency of the LED lamp filament can be improved, and the stability and reliability of a dimming system are ensured.

The invention relates to the technical field of LED lamp driver board welding, and discloses a welding device for processing and producing LED filament lamp driver boards, comprising a conveyor belt, wherein the outer surface of the conveyor belt is provided with an equipment main body, and the equipment main body further comprises: two feeding devices, which are arranged on the front end and rear end surfaces of the conveyor belt, and the feeding devices are used to deliver welding rods as needed when the conveyor belt conveys the lamp driver board and subsequent components are turned on for welding, so as to ensure that the equipment main body can normally weld the LED filament with the LED lamp driver board and ensure the normal operation of the device; a processing device, which is arranged on the top of the conveyor belt, and the processing device is used to cooperate with the conveyor belt to pre-treat the welding surface of the LED lamp driver board to avoid the presence of debris on its surface affecting the welding quality of the LED lamp driver board and the LED filament. The device has the advantages of improving the welding quality of the LED lamp driver board and the LED filament, improving its welding efficiency, and being convenient for users to use.

An LED filament light bulb includes a bulb base, a driving circuit module mounted to the bulb base and including two electrical contacts, a bulb member, a light-emitting unit, and a first heat dissipation gel. The light-emitting unit includes at least two light-emitting strip modules, each including first and second conductive tabs. The first conductive tab of one light-emitting strip module is electrically connected to the second conductive tab of another light-emitting strip module. The second conductive tab of the one light-emitting strip module and the first conductive tab of the another light-emitting strip module are electrically and respectively connected to the electrical contacts. The first heat dissipation gel is disposed between the bulb member and the bulb base, and covers at least a portion of the driving circuit module.

The LED filament includes an LED chip unit, a light conversion layer and electrodes. The light conversion layer covers the LED chip unit and parts of the electrodes. An outer surface of the light conversion layer is disposed with a layer body. The layer body covers the light conversion layer and at least covers parts of the electrodes. The layer body is provided with a chromogenic or light conversion material.

The invention relates to the field of composite materials, and discloses a light-operated LED filament lamp driving system and a light-operated LED filament lamp, and the light-operated LED filament lamp driving system comprises the following modules: a spectrum sampling module which is used for collecting light intensity data of a plurality of wavelengths in ambient light; the luminous flux calculation module is connected with the spectrum sampling module and is used for calculating real-time environment luminous flux based on the light intensity data and a sensor response function; and the error optimization module is connected with the luminous flux calculation module and is used for calculating a luminous flux error by comparing the real-time environment luminous flux with the target luminous flux and optimizing a dynamic light control threshold according to the error. According to the technical scheme of combining multispectral integral calculation, dynamic threshold adjustment and constant-current driving with PWM dimming, high-precision light detection in a complex light environment, rapid adaptation to dynamic light changes, stable driving of a filament lamp and non-stroboscopic dimming are achieved, meanwhile, false triggering caused by short-time light fluctuation is effectively restrained, and the light-emitting efficiency of the filament lamp is improved. The reliability and the service life of the system are improved.

The invention provides a light generating system (1000) comprising a LED filament (400), a first optical element (500), and a second optical element (600); wherein: (A) the first optical element (500) and the second optical element (600) are configured parallel; wherein the first optical element (500) and the second optical element (600) have a shortest mutual distance (d1); (B) the LED filament (400) comprises (i) an array of a plurality of solid state light sources (10) arranged on an elongated carrier (450), and (ii) an elongated encapsulant (410) at least partly enclosing the plurality of solid state light sources (10) and covering at least part of the elongated carrier (450); wherein the LED filament (400) is configured to generate filament light (401); wherein the LED filament (400) comprises a light emitting surface (420), wherein during operation of the LED filament (400) the filament light (401) escapes from the LED filament (400) via the light emitting surface (420); wherein the light emitting surface (420) is configured in between the first and second optical elements (500,600) and extending from the first optical element (500) to the second optical element (600); (C) each of the first optical element (500) and the second optical element (600) is configured to specularly reflect at least 25% of the filament light (401) received by the first and second optical element (500,600), respectively; and (D) the first optical element (500) is further configured to transmit 25-75% of the filament light (401) received by the first optical element (500).

A modular electrical connection system (100) for two / three-dimensional lighting is described, comprising a plurality of two-dimensional modules (10), each comprising two distinct poles (11, 12) connectable to an electrical power supply, a negative pole (11) and a positive pole (12) formed by a wire in electrically conductive material comprising non-insulated connection portions (14, 15, 16) to connect the two poles (11, 12) to each other via electrical contact elements (31, 32) connected to a light source (50) such as a LED filament (51) comprising an eletromagnetic connection system (52) comprising a first wire (53) in electrically conductive material fixed to a second wire (54) in ferritic material, inserted in a tube (55) in electrically conductive material.

The present invention relates to an LED filament lamp (7) for lighting, wherein at least one LED filament (7) is configured to emit polarized light. The LED filament lamp (7) comprises at least one LED filament (1) and an encapsulated volume (V) with an envelope (10) that includes a light-exit window, within which the LED filament (1) is disposed. The LED filament (1) or LED filaments (11, 12) comprise several LEDs (3) arranged in a filament holder (2). At least one polarizer (5) is arranged with respect to the LED filament (1). The polarizer (5) is configured to provide a polarization direction for the light. The polarizer (5) fully or partially encloses the LED filament (1), such that the light, or part thereof, emitted by the LED filament lamp (7) can be polarized or unpolarized.

This invention relates to the field of filament tying technology and provides a filament tying machine for LED filament lamp production. The machine includes a base, a pair of movable seats, and a pair of placement seats. A rack is fixedly mounted on one side of the base. The pair of movable seats are slidably connected to multiple guide shafts and threadedly connected to a threaded rod. Placement frames and rotating shafts are fixedly mounted on both sides of the placement seats. One end of the rotating shaft is rotatably mounted on the movable seat, and a gear is fixedly mounted on the rotating shaft. A pair of gears mesh with the rack for transmission. The filament tying machine for LED filament lamp production also includes a movable filament tying mechanism and a movable clamping mechanism. The filament tying machine for LED filament lamp production provided by this invention can drive the two placement seats to move alternately in a cycle. With the cooperation of the movable filament tying mechanism and the movable clamping mechanism, it can achieve alternating filament tying processing and clamping of two lamp heads, realizing rapid processing of LED filament tying and effectively improving the processing efficiency of LED filament tying.

To provide a decorative LED bulb capable of being decorated without depending on LED light emission control, and a manufacturing method therefor.SOLUTION: A vacuum LED bulb comprises an LED filament, and a glass bulb that protects the LED filament, where a clay layer with light transmissivity and light diffusion is formed over the entire surface of the glass bulb, and a pattern layer is formed on top of the clay layer. With a decorative LED bulb, the pattern layer is formed on top of the clay layer, making it possible to enjoy looking at the decorative LED bulb for a long period of time.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of LED lighting, in particular to a die for manufacturing an LED filament, which comprises a die frame, an inner die core is connected to the die frame in an embedded and clamped manner through a groove formed in the die frame, an outer die core is rotatably connected to the outside of the die frame through a mounting frame, and limiting grooves are formed in the surface of the die frame and the surface of the outer die core. A material storage box is arranged at the top of the mold frame, and a first drainage opening communicated with the material storage box is formed in the top wall of the interior of the mold frame. According to the improved mold for manufacturing the LED lamp filament, the inclined structure of the mold frame enables internal glue raw materials to flow along with the gravity under the action of gravity, the glue raw materials can be evenly attached to the surface of an LED support arranged between the inner mold core and the outer mold core in the flowing process, the effect of even coating is achieved, the complexity of back-and-forth turn-over coating is avoided, and the service life of the LED lamp filament is prolonged. The cavities at the bottoms of the inner mold core and the outer mold core enable redundant colloid to flow into the backflow box through the second drainage opening, the collected colloid raw materials can be reused in the follow-up process, and cost consumption is reduced.

An LED filament (100) includes: an array of a plurality of LEDs (110); a circuit (120) coupled to the plurality of LEDs; a carrier (130) arranged to support the plurality of LEDs; and an encapsulation (140) comprising a translucent material and a luminescent material configured to at least partially convert LED light into converted light, wherein the plurality of LEDs includes a first group of LEDs (150) arranged to emit first LED light in a first wavelength range of 430 nm to 490 nm, and a second group of LEDs (160) arranged to emit second LED light in a second wavelength range of 315 nm to 420 nm, wherein the circuit is configured to provide a first current I to the first group of LEDs during operation of the LED filament. c1 And provide a second current I to the second group of LEDs. c2 , where I c2 >I c1 .

The utility model discloses a non-polar LED filament structure which comprises a substrate, an LED chip is arranged on the substrate, a protection block is fixedly connected to the substrate, a heat dissipation groove is formed in the protection block, and the protection block is of a multi-layer composite structure and is sequentially provided with a light-transmitting layer, a high-temperature-resistant layer and a heat conduction layer from outside to inside. And the high-temperature-resistant layer covers the lower surface of the light-transmitting layer. Through the arrangement of the heat dissipation groove and the heat conduction layer, under the action of the heat conduction layer, the overall heat conduction effect of the protection block can be improved, and therefore heat generated when the LED chip works can be transmitted to the protection block and then dissipated to the external environment through the protection block, heat dissipation of the LED chip is achieved, and the service life of the LED chip is prolonged. The LED chips can work at a proper temperature all the time, so that the influence on the overall service life of the lamp filament is avoided, the contact area between the protection blocks and air can be increased under the action of the heat dissipation grooves, and the overall heat dissipation effect of the protection blocks can be improved.

There is provided a light emitting diode, LED, filament arrangement (100) configured to provide LED filament arrangement light (105) and comprising: a plurality of LED filaments (110) configured to emit corresponding LED filament light (115); an at least partially light transmissive housing 120, wherein the housing at least partially surrounds the plurality of LED filaments; a partition 130 disposed within the housing, where the partition and the housing define a plurality of partitions 140, where the partition includes a plurality of diffusely reflective surfaces 135 configured to reflect light by diffuse reflection, where at least one reflective surface of the plurality of diffusely reflective surfaces and at least one LED filament of the plurality of LED filaments are disposed in each partition.

A light emitting diode, LED, filament (1) configured to provide, in an on-state, LED filament light (2), and comprising an elongated carrier (3) comprising a longitudinal direction (LD), and a two-dimensional array of a plurality of LEDs (4) arranged on a first major surface (31) of the elongated carrier (3), and configured to, in operation, emit LED light (41). The two-dimensional array of a plurality of LEDs (4) comprises N rows of LEDs 5 and M columns of LEDs, where N ≥ 6 and M ≥ 50, and where the N rows of LEDs extend along the longitudinal direction (LD) of the elongated carrier. The two-dimensional array of a plurality of LEDs (4) has an outline having an outline width, W, and an outline length, L, W being in a range from 1 to 6 mm and L being at least 25 mm, and an aspect ratio is defined as L / W is at least 10. The plurality of LEDs comprises a plurality of X direct-emitting red LEDs 10 (4a), each comprising a red die (42a) having a first die surface area, SA1, a plurality of Y direct-emitting green LEDs (4b), each comprising a green die (42b) having a second die surface area, SA2, and a plurality of Z direct-emitting blue LEDs (4c), each comprising a blue die (42c) having a third die surface area, SA3. A coverage of the plurality of LEDs defined as the ratio of the total surface area of the red dies (42a), the green dies (42b) and the 15 blue dies (42c) to the surface area being enclosed by the outline of the two-dimensional array of a plurality of LEDs (4) is in a range from 10 to 40 %. The first die surface area, SA1, the second die surface area, SA2, and the third die surface area, SA3, each have a largest spatial extent, SE, that is less than or equal to 100 micrometers.

The utility model discloses an LED filament lamp, which comprises a lamp shell, the lamp holder is connected to the lamp shell, the core column and the conductive support are arranged in the lamp shell, the flexible LED lamp filament is connected with the conductive support, and the drive circuit is arranged in the lamp holder and electrically connected with the conductive support. The flexible LED lamp filament comprises an LED section which comprises a plurality of LED chips and a light conversion layer wrapping the LED chips; the first conductive electrode is electrically connected with the plurality of LED chips and one of the two conductive brackets; the second conductive electrode is electrically connected with the plurality of LED chips and the other one of the two conductive brackets; the conductive parts are electrically connected among the plurality of LED chips; one LED chip in the plurality of LED chips is provided with an electric connecting part, one end part of the conductive part is connected to the electric connecting part, the conductive part is provided with a first bending part and a second bending part, the conductive part extends from the electric connecting part along a first direction, a second direction and a third direction of the LED chip, and the first direction, the second direction and the third direction are different directions.

The present invention relates to a LED filament lamp (1) comprising a LED filament arrangement (1') for emitting a white light output, and a control unit for controlling the white light output. The LED filament arrangement (1') comprises (i) a first LED filament component (4) having a first LED light source for emitting a first white light component of a first correlated color temperature and a first color point, the first color point having a first x color coordinate and a first y color coordinate, (ii) a second LED filament component (5) having a second LED light source for emitting a second white light component of a second correlated color temperature and a second color point, the second color point having a second x color coordinate and a second y color coordinate, and (iii) a third LED filament component (6) having a third LED light source for emitting a third white light component of a third color temperature and a third color point, the third color point having a third x color coordinate and a third y color coordinate. Each of the first correlated color temperature, the second correlated color temperature and the third correlated color temperature is different from the other two. The third correlated color temperature is at least 500 K lower than each of the first correlated color temperature and the second correlated color temperature. The first color point is located below the black body locus, the second color point is located on or above the black body locus, and the third color point is located on, or below, or above the black body locus, a color point located on the black body locus being within 10 SDCM from the black body locus, a color point located below or above the black body locus being at least 10 SDCM away from the black body locus. Each of the first x color coordinate, the second x color coordinate and the third x color coordinate is different from the other two by at least a value of 0,05, and / or each of the first y color coordinate, the second y color coordinate and the third y color coordinate is different from the other two by at least a value of 0,05.

The invention provides a LED filament arrangement comprising a printed circuit board and at least one flexible LED filament having a respective length and providing, in operation, LED filament light; wherein the printed circuit board comprises: a front surface arranged on a first side of the printed circuit board; a back surface arranged on a second side of the printed circuit board, the second side being opposite to the first side; an electronic circuit arranged on the front surface of the printed circuit board and configured to convey, in operation, power to the at least one flexible LED filament; at least one opening extending through the printed circuit board from the first side to the second side; wherein each flexible LED filament of the at least one flexible LED filament extends through one or two openings of the at least one opening; wherein each flexible LED filament of the at least one flexible LED filament is partly arranged on the second side of the printed circuit board; wherein each flexible LED filament of the at least one flexible LED filament is mechanically and electrically connected to the electronic circuit on the front surface of the printed circuit board.

The utility model relates to the packaging structure technical field, and discloses a large power LED filament packaging structure comprising an internal assembly and packaging glue, the internal assembly comprises a pedestal, the pedestal is internally provided with a heat conduction cavity, two ends of the pedestal are provided with installation ports, the heat conduction cavity is internally provided with a heat conduction member, and the heat conduction member is provided with a heat conduction hole. Heat conducting strips are uniformly and fixedly connected to the heat conducting piece, the heat conducting strips are in contact with the inner wall of the base, the two ends of each heat conducting strip penetrate through the corresponding mounting through opening, and a notch is formed in the end of each heat conducting strip; lED chips are fixedly connected to the upper surface and the lower surface of the base, and metal terminals are fixedly connected to the two ends of the base. According to the high-power LED filament, through the arrangement of the heat conduction cavity, the heat conduction piece and the heat conduction strip, heat conducted to the base by the LED chip can be conducted out, so that the overall heat dissipation effect is improved, the service life of the high-power LED filament is prolonged, and the high-power LED filament is durable in use.

The invention relates to the technical field of illumination, and discloses an LED filament, an LED filament lamp and a control method thereof.The LED filament comprises a substrate with two electrodes, a first light mixing set and a second light mixing set are arranged on the two faces of the substrate respectively, the first light mixing set comprises two LED chips, the second light mixing set comprises two LED chips, a light excitation layer is arranged on each LED, and the first light mixing set and the second light mixing set are arranged on the substrate respectively. And the whole body is wrapped with a diffusion layer to form the filament. A plurality of lamp filaments are arranged in the LED filament lamp, conduction of a plurality of different chips is achieved through arrangement of a small number of electrodes in appearance, and light mixing and dimming are achieved by controlling the conduction duration and period of the different chips and correspondingly configuring LEDs of different colors and light excitation layers made of different conversion materials. The lamp filament basically has no dark area or chromatic aberration area which can be identified by naked eyes, the whole body of the lamp filament is mixed with light, the emergent light is uniform, and the light modulability and the light quality are improved. The filament and the lamp body are simple in structure, and the requirement of consumers for rejuvenating the retro aesthetic feeling of a traditional incandescent lamp is met.

A light emitting diode, LED, filament (100) configured to provide LED filament light (110) is provided. The LED filament comprises an elongated carrier (120) and LEDs (130) arranged on the elongated carrier, wherein the LEDs are configured to emit LED light (150). The LED filament further comprises an elongated luminescent encapsulant (200) at least partially covering the elongated carrier and at least partially enclosing the LEDs. The LED filament further comprises an elongated white encapsulant (300) comprising a polymer matrix (310) and particles (320) dispersed in the polymer matrix, wherein the polymer matrix has a refractive index, npm, and the particles have a refractive index, npa, wherein |npa – npm| is in a range of 0.03 – 0.15, wherein the polymer matrix has a reflectivity, R, in a range of 12 – 30 %, and wherein the particles have a particle diameter, D, in a range of 1 – 5 μm.

The field of the invention is an LED filament lamp (7) for illumination, wherein at least one LED filament lamp (7) is configured to emit polarized light. The LED filament lamp (7) comprises at least one LED filament (1) and an encapsulation volume (V) with an enclosure (10), the enclosure (10) comprising a light exit window, inside which the LED filament (1) is arranged. The LED filament (1) or the LED filament (11, 12) comprises a plurality of LEDs (3) arranged on a filament carrier (2). At least one polarizer (5) is arranged relative to the LED filament (1). The polarizer (5) is configured to provide a polarization direction of the light. The polarizer (5) surrounds or partially surrounds the at least one LED filament (1) such that light or part of light emitted from the LED filament lamp (7) may be polarized light or non-polarized light.

A power tool includes a tool housing, an outer surface of which supports a portion of an elongate LED filament. The LED filament includes a flexible substrate and micro-LEDs disposed on the substrate in an electrically connected arrangement in such a way the light is emitted from the LED filament in a direction perpendicular to the substrate over a range of angles from 0 degrees to 360 degrees. The relatively small diameter and large flexibility of the LED filament and the intense illumination provided by the LED filament make the LED filament suited for use as an illumination device in small devices such as hand-held power tools.

1. Name of the designed product: LED filament lamp (three). 2. Use of the designed product: The designed product is used for lighting and decoration. 3. Design points of the designed product: The design points lie in the external shape and filament shape of the product. 4. Picture or photo that best indicates the design points: perspective view.

The invention relates to the technical field of LED lamp production, and discloses a full-automatic high-precision LED lamp filament winding all-in-one machine which comprises a base, a rotating plate is fixedly installed on the base, a driver is arranged in the base and can drive the rotating plate to rotate, a supporting column is fixedly installed on the rotating plate, and a lampwick is clamped through a mechanical arm and placed in a fixing pipe to be fixed. Then the lampwick is continuously placed in different fixing tubes in cooperation with rotation of a rotating plate, and meanwhile, a telescopic drive a is matched with a rotating drive a to drive spring type supports to rotate and move downwards, so that each spring type support can penetrate through a metal frame on the corresponding lampwick; the flexible filament with one end provided with a circular groove can be hung on the hook through the mechanical arm, the telescopic drive a is matched with the rotary drive a to drive the spring type support to rotate and move upwards, the flexible filament can be driven to penetrate through each metal frame, manual filament winding treatment is not needed, and meanwhile production efficiency can be improved through assembly line work.

The invention relates to the technical field of LED illumination, and discloses a multi-color LED lamp filament which comprises the following components in parts by mass: 80-95 parts of a rare earth composite luminescent material; the quantum dot auxiliary spectrum adjusting layer accounts for 2 to 8 parts by mass; the optical microstructure coating accounts for 3 to 8 parts by mass; the thermal management coating accounts for 5 to 10 parts by mass; the wire base body adopts a gold wire or an alloy wire, the rare earth composite luminescent material comprises a matrix material and a rare earth activating agent, and the matrix material is selected from red fluorescent powder with the emission wave band of 580-700 nm, yellow fluorescent powder with the emission wave band of 540-580 nm, green fluorescent powder with the emission wave band of 480-540 nm, blue fluorescent powder / purple fluorescent powder with the emission wave band of 400-480 nm, silica gel and epoxy resin. Through the optimized design of the multi-layer composite structure, complete coverage of the spectrum and remarkable improvement of the lighting effect are achieved, and the light loss is effectively reduced.

This application relates to the field of lighting and discloses an LED filament comprising an LED segment comprising at least two LED chips electrically connected to each other via a wire; a conductor segment comprising a conductor connecting two adjacent LED segments, the conductor being longer than the wire; an electrode electrically connected to the LED segment; and a light conversion layer covering at least the LED segment and a portion of the electrode, leaving a portion of the electrode exposed. The light conversion layer contains a phosphor composition having different peak wavelengths when excited by blue light. This application also discloses an LED bulb containing the aforementioned LED filament. This application features uniform light emission and excellent heat dissipation.

The invention discloses an LED lamp filament lead welding forming machine based on decoration engineering, relates to the technical field of LED lead welding, and aims to solve the problems of dislocation, inclination or inconsistent spacing during welding of a double-lead LED lamp filament. On one hand, by optimizing the positioning structure of the LED filament lead, synchronous positioning and spacing constraint of the two leads are realized, the problems of dislocation, inclination or inconsistent spacing of the two leads are effectively avoided, and accurate positioning and welding between the LED filament lead and a pin element are ensured; on the other hand, through the continuous feeding and discharging structure of the LED filament double leads, the requirement for clamping the double leads is met, and meanwhile the production continuity can be improved; by means of the multi-dimensional adjusting function of the double-positioning structure and the adjustable pressing structure and the precise wire feeding design of the wire feeding mechanism, the problems of dislocation, inclination and inconsistent spacing during welding of the double-lead LED lamp filament are thoroughly solved, and the purposes of uniform welding wire feeding, flexible welding angle and continuous machining are achieved.