172 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.

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

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 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.

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.

The present invention relates to a light-emitting diode, LED, filament (100) configured to, in an on-state of the LED filament, emit LED filament light, the LED filament comprises an elongated carrier (101) comprising a first major surface (101´) and a second major surface (101´´) opposite to the first major surface, and an array of a plurality of LEDs (102) arranged on the first major surface (101´) of the elongated carrier (101´´), wherein each LED (102) of the plurality of LEDs is configured to, in an on-state, emit LED light; and a coloured non-luminescent elongated outer encapsulant (103), wherein the coloured non- luminescent elongated outer encapsulant (103) has, in an off-state of the LED filament, a yellow or an orange appearance.

An LED filament luminaire (1) comprising: a reflector (2), a helical LED filament (3) comprising a plurality of LEDs (4) arranged on an elongate carrier and configured to emit LED light (5) in operation, the helical LED filament (3) being at least partially arranged in the reflector (2), the LED filament luminaire (1) being configured to emit LED filament luminaire light (7) through the light exit window (6) in operation, the spiral LED filament (3) comprises an LED filament pitch (PS), the reflector (2) comprises an inner surface (9), the inner surface (9) comprises a plurality of concave structures (8), the plurality of concave structures (8) are arranged in a spiral pattern comprising a concave structure pitch (PC), and the LED filament pitch PS corresponds to the concave structure pitch PC.

A light emitting diode, LED, filament (1) configured to, in operation, emit LED filament light (2) and comprising a first array (3) of a plurality of first LEDs configured to, in operation, emit first LED light (32), a second array (4) of a plurality of second LEDs configured to, in operation, emit second LED light (42), and an elongated carrier (6), the elongated carrier (6) comprising a cross-sectional U-shape forming an elongated cavity (61), a bottom surface (62), a first side surface (63) and a second side surface (64) facing the elongated cavity, and an elongated opening (65) opposite to the bottom surface, the elongated cavity (61) being filled partly or fully with an elongated encapsulant (7), the first array (3) of the plurality of first LEDs being arranged in the elongated cavity (61) on a first one of the bottom surface (62), the first side surface (63) and the second side surface (64), the second array (4) of the plurality of second LEDs being arranged on a second one of the bottom surface (62), the first side surface (63) and the second side surface (64) being different from the first one of the bottom surface (62), the first side surface (63) and the second side surface (64), and the LED filament light (2) comprising at least a part of the first LED light (32) and the second LED light (42), and the elongated opening (65) forms a light exit surface of the LED filament (1).

A lighting device (10) configured to, in operation, provide lighting device light. The lighting device comprising a housing (20) and a light source (50). The housing comprises a cavity surface (23) defining an inner cavity (24) of the housing. The inner cavity has a first window (21) in a first direction (D1) and a second window (22) in a second direction (D2), opposite to the first direction. The first window has a first area (A1), and the second window has a second area (A2). The light source comprises a plurality of light emitting diode, LED, filaments (52) configured to, in operation, provide LED filament light within the inner cavity. The LED filaments are electrically connected between first and second tracks. The LED filament light leaves the housing through either the first window or the second window. A luminaire comprising a lighting device is also disclosed.

The invention relates to an LED filament (1) and an LED filament lamp (3) comprising the LED filament (1), wherein the LED filament (1) is configured to emit white light or colored light. The LED filament (1) comprises at least ten LEDs (91-9n) arranged on an elongated carrier (2). The LEDs (91-9n) may be LEDs (91-9n) of different colors, wherein the LEDs comprise at least five different main peak wavelengths. The LEDs (91-9n) are positioned alternately with each other along the carrier (2). The LED filament (1) comprises: a plurality of first blue LEDs (91) configured to emit first light having a first main peak wavelength 1; and a plurality of first and second green-yellow light LEDs (92, 93) configured to emit second light having a second main peak wavelength # 2 and a third main peak wavelength # 3, respectively; and a plurality of first red orange light LEDs (94) configured to emit fourth light having a fourth main peak wavelength # 4. The LED filament (1) further comprises one or both of at least one third green-yellow LED (9 #) configured to emit fifth light having a fifth main peak wavelength # 5 and at least one second red-orange LED (9 #) configured to emit sixth light having a sixth main peak wavelength # 6. The difference between each main peak wavelength is at least 20 nm. LEDs (91-9n) comprising different main peak wavelengths may also be added.

A light emitting diode, LED, filament (1) configured to, in an on-state, emit LED filament light (2) and comprising an elongated carrier (3) comprising a first major surface (31) and a second major (32) surface opposite to the first major surface (31), an array of a plurality of LEDs (4) configured to, in an on-state, emit LED light (41) and being arranged on the first major surface (31), an elongated light-converting encapsulant (5) at least partly enclosing the plurality of LEDs (4), at least partly covering the first major surface (31) of the elongated carrier, and comprising a luminescent material adapted to convert at least part of the LED light (41) into converted light, the LED filament light (2) comprising the converted light and optionally a portion of the LED light (41), and a semi-reflective mirror (6). The semi-reflective mirror (6) encloses the elongated light-converting encapsulant (5) at least partially and comprises (i) a plurality of layers (61-67), wherein the plurality of layers comprises m layers, where m is an integer being at least seven, wherein neighboring layers of the plurality of layers (61-67) comprise different refractive indices (n1-nm), or (ii) a cholesteric liquid crystal layer.

The utility model relates to a double color temperature LED light source and an illuminating lamp in the technical field of light emitting illumination, comprising a filament support substrate and a plurality of groups of LED chip strings arranged on the filament support substrate, at least three groups of LED chip strings are arranged, at least two groups of LED chip strings in the at least three groups of LED chip strings are arranged as first chip strings, and at least two groups of LED chip strings are arranged as second chip strings. At least one group of LED chip strings is set as a second chip string, the second chip string is arranged between the two groups of first chip strings, a voltage regulation assembly is arranged in the second chip string, and the forward voltage drop of the first chip strings is higher than that of the second chip string, so that the problem that the forward voltage drop of an existing LED filament is too high when the existing LED filament is driven by different currents is solved. And the problem that the service life of the LED lamp filament is affected due to the fact that the temperature of the middle chip string rises continuously exists.

An LED filament 100 comprises a light-transmitting carrier (110), and the light-transmitting carrier comprises a first surface (112) and a second surface (114) arranged opposite to the first surface. The LED filament also includes a first array of LEDs (120) disposed on the first surface, wherein the first LEDs are configured to emit blue LED light (125). The LED filament further includes a first elongate encapsulation (130) covering the first surface and the first LED array, the first elongate encapsulation (130) including a first luminescent material (132) configured to at least partially convert the emitted blue LED light into first converted light (135), where the first luminescent material includes a green-yellow phosphor. The LED filament further comprises a second elongated encapsulation (140) covering the second surface, the second elongated encapsulation (140) comprising a second luminescent material (142) configured to at least partially convert the emitted blue LED light into fourth converted light (145) comprising red light.

The present invention relates to a light emitting diode (LED) filament for use in filament lamps that outputs full spectrum light. In one aspect, the LED filament comprises a first plurality of LED dies that emit light within a first range of wavelengths and a second plurality of LED dies that emit light within a second range of wavelengths, where the first and second ranges do not overlap. The LED filament may be assembled using a plurality of die bonding processes. The LED dies may be arranged in a linear arrangement, a staggered arrangement, or combinations thereof. Additionally, the LED filament may be used in a lamp that includes the LED filaments coupled to a support mount within an envelope defining a cavity.

The utility model provides an LED filament lamp and a display device, the LED filament lamp comprises a sapphire substrate, a plurality of LED chips and a transparent protective cover, the plurality of LED chips are uniformly distributed on the sapphire substrate in a matrix form, the connection directions of the adjacent LED chips are opposite, the sapphire substrate and the plurality of LED chips are combined to form an LED filament, and the transparent protective cover is arranged on the sapphire substrate. A plurality of side walls of the sapphire substrate are covered with silica gel layers, and the silica gel layers wrap the LED chips; the interior of the transparent protection cover is hollow to form a containing space, the LED lamp filament is located in the containing space, a plurality of heat dissipation holes are formed in the transparent protection cover, and the heat dissipation holes communicate with the containing space. And meanwhile, the problem that when the LED filament lamp is used for a long time in a severe environment, the light attenuation of the LED filament lamp is large is solved.

This invention relates to the field of welding equipment technology, specifically a welding device for processing and producing LED filament driver boards. It includes a base, on which, in a counter-clockwise direction, are sequentially arranged loading / unloading stations, a welding station, a cooling station, and a composite inspection station. It also includes an indexing frame with four carriers mounted on it. Each carrier has a workpiece holding and inspection mechanism, which includes a vibrating support slidably connected to the carrier, a bidirectional lead screw rotatably connected to the carrier, an inner shaft, and a convex shaft. An outer shaft is rotatably sleeved on the inner shaft. The beneficial effects of this invention are: by sequentially integrating the loading / unloading stations, welding station, cooling station, and composite inspection station in a counter-clockwise direction on the base, and by using the indexing frame to drive the four carriers to rotate intermittently by 90°, each LED filament driver board automatically enters the composite inspection station after laser welding and forced cooling.