CN105570701B - A kind of LED filament luminous intensity standard lamp - Google Patents
A kind of LED filament luminous intensity standard lamp Download PDFInfo
- Publication number
- CN105570701B CN105570701B CN201610113751.3A CN201610113751A CN105570701B CN 105570701 B CN105570701 B CN 105570701B CN 201610113751 A CN201610113751 A CN 201610113751A CN 105570701 B CN105570701 B CN 105570701B
- Authority
- CN
- China
- Prior art keywords
- lamp
- filament
- led filament
- lamp housing
- luminous intensity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/02—Cages
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of LED filament luminous intensity standard lamp is provided, including：Lamp cap and lamp housing, are provided with glass stem, filament support, LED filament in lamp housing, lamp housing sealing and filled with heat radiation protection gas；Filament support is fixed on glass stem, and it is respectively that positive line and cathode line, positive line and cathode line are connected with the two poles of the earth of lamp cap respectively that two seal wires are drawn in glass stem；LED filament is fixed on filament support, and for parallel arrangement in a plane in lamp housing, the center of plane is consistent with the center of lamp housing at equal intervals；The blacking of lamp housing surface is simultaneously provided with optical transmission window, optical transmission window be located at the center of painting black flour and with LED filament where the center of plane it is consistent.LED filament luminous intensity standard lamp of the invention is simple in structure, be easy to adjustment, horizontal and vertical angular characteristics are good, illumination field is evenly distributed, have the advantages that good stability, anti-vibration, high yield rate, at low cost, and the uncertainty of measurement result caused by spectral mismatch can be substantially reduced.
Description
Technical field
The invention belongs to optical radiation measurement field, it is related to a kind of LED filament luminous intensity standard lamp more particularly to one kind can
Meet the LED filament luminous intensity standard lamp that the photometric parameter that illuminator is light emitting diode (LED) light source measures.
Background technology
Luminous intensity standard lamp is the standard metrology appliance for preserving and transmitting unit of luminous intensity's magnitude.Unit of luminous intensity
Candela (cd) is one of seven base units of SI, remaining light unit such as lm (lumen), lx (unit of illuminance), cd/
m2(brill) is all derived from unit of luminous intensity.Traditional luminous intensity standard lamp is incandescent lamp, illuminator cloth
It is set to plane, intensity of illumination distribution is uniform in measurement plane, by the design of lamp housing shape, surface blacking or additional diaphragm, makes every effort to
Stray light is avoided or reduced, good horizontal and vertical angular characteristics and excellent magnitude reproducibility are made it have, measures position
Starting point be filament front surface.
Traditional incandescent strength criterion lamp is due to complex manufacturing technology, and at high price, some reputable brands shine
Strength criterion lamp partial outage is difficult to obtain from commercial channels at present.LED light has significant energy-saving effect, with price
Continuous reduction, be substitute conventional light source principal item.Existing luminosity magnitude transport system is to be based on incandescent standard lamp, so
And the spectral power distribution of LED is different from incandescent source, when directly measuring LED light source with incandescent standard lamp, due to spectral mismatch
The deviation of measurement result caused by error is even as high as 30%, cannot meet the needs of LED industry development.In consideration of it, light radiation
There is an urgent need to the luminous intensity standard lamps that illuminator is LED for fields of measurement, to improve the accuracy of LED measurements, and can solve white
The present situation of vehement luminous intensity standard lamp shortage.
It is only 8-12min that LED filament lamps and lanterns, which have good magnitude reproducibility, preheating time, is arranged by rational filament
Make it possible using LED as the making of the LED filament luminous intensity standard lamp of illuminator with heat dissipation design.To meet light radiation
Demand of the fields of measurement to illuminator is LED luminous intensity standard lamps, the present invention provides a kind of using LED filament as illuminator
LED filament luminous intensity standard lamp, stability is good, and manufacture craft is simple, and high yield rate is at low cost, and service life is much larger than biography
The incandescent standard lamp of system；The illumination for measuring LED light source is directly calibrated using the LED filament luminous intensity standard lamp of the present invention
When meter and luminance meter, spectral mismatch amendment need not be carried out, data handling procedure is simplified.
Invention content
In view of the deficiencies of the prior art, the present invention provides the LED filament luminous intensity marks that a kind of LED filament is illuminator
Quasi- lamp, stability is good, and service life is much larger than traditional incandescent standard lamp.
A kind of LED filament luminous intensity standard lamp, including：Lamp cap and lamp housing are provided with glass stem, filament branch in lamp housing
Frame, LED filament, lamp housing seal and filled with heat radiation protection gases；The filament support is fixed on glass stem, in glass stem
It is respectively that positive line and cathode line, positive line and cathode line are connected with the two poles of the earth of lamp cap respectively to draw two seal wires；
The LED filament is fixed on filament support, and parallel arrangement is in the YZ planes in lamp housing at equal intervals, square or rectangle,
Planar central is located on the center of lamp housing；The projection of the LED filament and filament support vertical portion in XZ planes is misaligned；
The lamp housing front surface is more than or equal to 1/3 to less than 1/2 blacking, and opens the optical transmission window there are one square or rectangular,
Plane where optical transmission window face LED filament is located at the center of lamp housing painting black flour, center and the LED filament place of optical transmission window
The line of planar central is located in X-axis；Or the lamp housing surface not blacking, the diaphragm of a blacking, stop plane are placed before lamp
Plane where being parallel to LED filament, the center of diaphragm and the line of planar central where LED filament are located in X-axis.
The lamp housing of the present invention, can be the shapes such as pyriform, cylindricality, spherical shape, taper.
As a preferred solution of the present invention, the lamp housing resembles a pear in shape, and lamp housing is preferably A80-A170 blisters, more preferably
A125 blisters.The fever of LED filament is exported by inert gas by lamp housing, and the selection of lamp housing size is related to the power of lamp, small
Power modulation uses small lamp housing, high-power lamp to use big lamp housing.Small glass bulb is used in one timing of power of lamp, it can convenience in transport and storage
It deposits, reduces cost；But preheating time can be increased, shorten the service life of lamp, reduce the stability of lamp.A125 glass bulbs selected by the present invention
Not only can guarantee the meter characteristic of 4.8W standard lamps, but compared with standard lamp of luminous intensity lamp housing sizableness, convenient for existing
It is used on photometric measuring apparatus.
As another preferred embodiment of the present invention, the lamp housing is cylindrical, and cylindrical body diameter is preferably 19-61mm, more
It is preferred that 27mm.Only have all filaments coplanar pyriform glass bulb, and be located at lamp housing center, the reflection image of filament could be with filament weight
It closes, otherwise a lamp will present multiple light emitting sources, and illumination field uniformity can lower in measuring surface；Selected cylindricality glass bulb, filament
Reflection image is located at the top of lamp, reduces the requirement for standard lamp filament adjustment, improves yield rate.The fever of LED filament
It is exported by lamp housing by inert gas, the selection of lamp housing size is related to the power of lamp, and small light uses small lamp housing, high-power
Lamp uses big lamp housing.Lamp one timing of power use small glass bulb, can convenience in transport and storage, reduce cost；But it can increase pre-
The hot time shortens the service life of lamp, reduces the stability of lamp.The cylindricality glass bulb of diameter 27mm selected by the present invention can ensure 1.6W
The meter characteristic of standard lamp.
Preferably, the lamp housing is colourless, transparent glass, at optical transmission window without apparent anti-alkali, hair mist, striped,
The defects of bubble, the grains of sand, scratch.
As a preferred solution of the present invention, for pyriform lamp housing, there is a bending at the top of the filament support, realize
The projection of the LED filament and filament support vertical portion in XZ planes is misaligned.Made by bending at the top of filament support
The top of filament support is located at glass bulb center.It is preferred that 45 ° (degree) is bent so that filament support is with Z axis parallel portion in XZ planes
Projection and glass bulb center at a distance of 4mm or so, the intensity of filament support declines small, can guarantee when filament is lighted and when transporting for long-distance
Supporting role to filament；45 ° are global angle, easy to process, and yield rate can be improved, reduce cost.
As a preferred solution of the present invention, the vertical portion (parallel with Z axis) of the filament support and LED filament exist
Projection in XZ planes is at a distance of 1-6mm, more preferably at a distance of 4mm.Luminous intensity standard lamp measures the starting point of position as before filament
Surface needs the position of adjustment lamp to make projection of the filament in XZ planes parallel with Z axis, in order to improve the essence of adjustment when in use
Degree, filament support should not be overlapped with filament projection, and should at intervals, with conveniently recognized.The two standoff distance compared with
When small (1-3mm), under the environment that projection lamp collimation is bad and contrast is low, the projection of the two is not easy to differentiate；The two is separated by
Apart from it is larger when filament support bending degree it is big, the strength reduction of filament support is unfavorable for the long-distance transport of standard lamp.45°
(degree) bending is that the interval of 4mm both can guarantee the precision of filament position adjustment, ensures that the intensity of filament support.
As one embodiment of the invention, the lamp housing front surface is more than or equal to 1/3 to small in addition to optical transmission window
In 1/2, preferably greater than or equal to 2/5 to less than 1/2 part, with auto lamp shading liquid blacking and toasted, auto lamp shading liquid is logical
It is often a kind of high-temperature resistant coating being formulated by organic siliconresin and organic solvent.It is anti-that such structure effectively reduces filament
Stray light caused by image and filament support.
As a preferred solution of the present invention, the LED filament is arranged into square filament plane, the blacking table of lamp housing
Open a square optical transmission window in face.
As another preferred embodiment of the present invention, the LED filament arrangement rectangularity filament plane, the blacking of lamp housing
Open a rectangular optical transmission window in surface.
As a preferred embodiment, the side ratio filament flat edge of the optical transmission window is grown up 2-10mm, more excellent
Select big 4-8mm.The blacking of lamp housing surface is in order to which by the spuious light shield of lamp, the light that optical transmission window should only be such that filament sends out reaches survey
Plane is measured, therefore the size of optical transmission window should be slightly more than filament plane, so not only maskable stray light, but also ensure not block
The light that filament is sent out, optical transmission window cross conference and stray light are leaked, and optical transmission window is too small and there is the risk for blocking filament.
As another scheme, the lamp housing surface not blacking places a blacking at 15-30mm before lamp, preferably 20mm
Diaphragm, diaphragm aperture efficiency filament flat edge are grown up 3-8mm, more preferable big 4-6mm.Such design can effectively reduce filament reflection
Stray light caused by picture and filament support, the process for eliminating lamp housing blacking.
Preferably, the heat radiation protection gas is inert gas, including nitrogen or helium, more preferably helium.In this way
Design can effectively reduce the junction temperature of LED, improve the stability of lamp, extend the service life of lamp.
Preferably, the filament support is iron nickel plating, glass and molybdenum filament.For pyriform lamp housing, filament support is iron
Nickel plating；For cylindricality lamp housing, the top of filament support is molybdenum filament, and middle part is glass, and lower part is iron nickel plating, by molybdenum filament by lamp
Silk glass supporter is fixed on glass bulb.
Preferably, the LED filament luminous intensity standard lamp is powered using direct current current constant mode.LED is semiconductor device
Part, can only one-way conduction, therefore using the type of drive of direct current, the drive mode of alternating current 220V, but lamp are commercially used with LED light
There are one AC-DC conversion modules in head；The luminous intensity of LED passes through drive with driving current positive correlation using constant current drive mode
The meter characteristic of standard lamp is realized in the accurate control of streaming current.
The structure of LED filament luminous intensity standard lamp provided by the invention is simple, and filament support is with filament in XZ planes
Projection in the same plane, is not easy to the adjustment of lamp；Horizontal and vertical angular characteristics are good；Illumination field distribution is equal in measuring surface
It is even；Compared with traditional incandescent standard lamp, preheating time is suitable, and magnitude reproducibility is more preferable, longer life expectancy, has stability good, anti-
Vibrations, high yield rate, advantage at low cost, and can be substantially reduced when illumination photometer and luminance meter of the calibration for measuring LED light source
The uncertainty of the measurement result caused by spectral mismatch.
Description of the drawings
Fig. 1 is a kind of coordinate system schematic diagram of LED filament luminous intensity standard lamp of the present invention, and coordinate axis origin is located at
Lamp housing center.
Fig. 2 is a kind of schematic cross-sectional view of pear-shaped LED lamp silk luminous intensity standard lamp of the present invention.
Fig. 3 is a kind of front view of pear-shaped LED lamp silk luminous intensity standard lamp of the present invention.
Fig. 4 is a kind of rearview of pear-shaped LED lamp silk luminous intensity standard lamp of the present invention.
Fig. 5 is a kind of side view of pear-shaped LED lamp silk luminous intensity standard lamp of the present invention.
Fig. 6 is a kind of schematic cross-sectional view of cylindrical LED filament luminous intensity standard lamp of the present invention.
Fig. 7 is a kind of front view of cylindrical LED filament luminous intensity standard lamp of the present invention.
Reference sign：1- lamp caps；2- cathode lines；3- glass stems；4-positive lines；5-LED filaments；6- lamps
Shell；7- filament supports；7a- molybdenum filaments；7b- glass；7c- iron nickel plating；8- optical transmission windows.
Specific implementation mode
It is described below and illustrates the exemplary implementation scheme of the present invention.The program has been included in LED filament luminous intensity
In standard lamp.Certainly, it will be apparent to those skilled in the art that preferred embodiment discussed below exists
It is exemplary in nature, and can be changed without departing from scope and spirit of the present invention.But in order to
Clearly and accurately, the exemplary implementation scheme discussed below may include preferred step, method and feature, and this field is general
Logical technical staff will be appreciated that these preferred step, method and features are not the necessary items being within the scope of the present invention
Part.
Embodiment 1
A kind of pear-shaped LED lamp silk luminous intensity standard lamp as Figure 2-Figure 5, including：Lamp cap 1 and lamp housing 6, lamp housing 6
It is inside provided with glass stem 3, filament support 7, LED filament 5, lamp housing 6 seals and filled with helium；Filament support 7 is fixed on glass
The respectively positive line 4 of two seal wires and cathode line 2, positive line 4 and lamp cap 1 are drawn on stem 3, in glass stem 3
Center is connected, and cathode line 2 is connected with the edge spiral of lamp cap 1；LED filament 5 totally 6, every filament long 31mm, wide 1.6mm,
The both ends of rated power 0.8W, electric current 12mA, colour temperature 2670K, colour rendering index 81, filament are individually fixed in the upper of filament support 7
Portion and lower part, LED filament 5 is in parallel using every 3 one group, after again concatenated mode by parallel arrangement at equal intervals in one in lamp housing
In a square (length of side 31mm) plane, the center of square-shaped planar is consistent with the center of lamp housing 6；Lamp housing 6 selects A125 blisters,
Using high-quality glass material.The car light shading liquid blacking of 9/20 surface of lamp housing 6, and open that there are one square (length of side 37mm)
Optical transmission window 8, optical transmission window 8 are located at the center of painting black flour, plane where face LED filament, and center is put down with where LED filament
The line at face center is located in X-axis.
The driving current of above-mentioned pear-shaped LED lamp silk luminous intensity standard lamp is 30mA, voltage 133V, using existing luminosity
Measurement experiment device is tested its preheating time, magnitude reproducibility, illumination field uniformity and luminous intensity.When it is preheated
Between be 10min, luminous intensity magnitude reproducibility is 0.06%, and it is 0.32% to light in 1200 hours the variation of magnitude maximum.Test
When lamp at a distance from detector receiving plane be 1.2m, detector diaphragm diameter 8mm, test result be in the illumination apart from lamp 1.2m
Illumination field inhomogeneities (in central point normalizing) on field in the regions 10mm × 10mm is 0.4%, luminous intensity 43.01cd.
Embodiment 2
A kind of cylindrical LED filament luminous intensity standard lamp as Figure 6-Figure 7, including：Lamp cap 1 and lamp housing 6, lamp housing 6
It is inside provided with glass stem 3, filament support 7, LED filament 5, lamp housing 6 seals and filled with helium；Filament support 7 is fixed on glass
It is respectively positive line 4 and cathode line 2 that two seal wires are drawn on stem 3, in glass stem 3, respectively with the both ends phase of lamp cap
Even；LED filament 5 totally 2, every filament long 31mm, wide 1.6mm, rated power 0.8W, electric current 12mA, colour temperature 2670K, colour developing
Index 81, the both ends of filament are individually fixed in the middle part and lower part of filament support 7, and another filament support 7a (molybdenum filament) is by filament support
7b (glass) is fixed on the top of lamp housing 6；LED filament 5 is connected using series system, a rectangle being arranged in lamp housing
In (length of side 31mm × 18mm) plane, the center of rectangular planes is consistent with the center of lamp housing 6；6 diameter 27mm of lamp housing, use are excellent
Matter quartz glass material.2/5 surface car light shading liquid blacking of lamp housing 6 and open there are one rectangle (length of side 35mm ×
Optical transmission window 8 22mm), 5 place plane of face LED filament, center and the line of 5 place planar central of LED filament are located at X
On axis.
The driving current of above-mentioned cylindrical LED filament luminous intensity standard lamp is 12mA, voltage 133V, using existing luminosity
Measurement experiment device to the preheating time of the cylindrical LED filament luminous intensity standard lamp, magnitude reproducibility, illumination field uniformity into
Test is gone.Its preheating time is 10min, and luminous intensity magnitude reproducibility is 0.06%, and it is maximum to light magnitude in 1200 hours
Variation is 0.4%.When test lamp at a distance from detector receiving plane be 1.0m, detector diaphragm diameter 8mm, test result be
Illumination field inhomogeneities (in central point normalizing) in illumination field apart from lamp 1.0m in the regions 10mm × 10mm is 0.5%, hair
Luminous intensity is 16.32cd.
Claims (9)
1. a kind of LED filament luminous intensity standard lamp, including：Lamp cap (1) and lamp housing (6), lamp housing (6) is interior to be provided with glass stem
(3), filament support (7), LED filament (5), lamp housing (6) seal and filled with heat radiation protection gases；
The filament support (7) is fixed on glass stem (3), and it is respectively just that two seal wires are drawn in the glass stem (3)
Pole line (4) and cathode line (2), positive line (4) and cathode line (2) are connected with the two poles of the earth of lamp cap (1) respectively；
The both ends of the LED filament (5) are individually fixed in the upper and lower part of filament support (7), and parallel arrangement is in lamp at equal intervals
YZ planes in shell, square or rectangle, planar central are located on the center of lamp housing (6)；The filament support (7) it is upper
There is a bending in portion so that the projection of the LED filament (5) and filament support (7) vertical portion in XZ planes is at a distance of 4mm；
Lamp housing (6) front surface is more than or equal to 1/3 to less than 1/2 blacking, and opens saturating there are one square or rectangular
Light window (8), plane where optical transmission window (8) face LED filament (5) are located at the center of lamp housing (6) painting black flour, optical transmission window
(8) center and the line of planar central where LED filament (5) are located in X-axis；Or lamp housing (6) the surface not blacking, lamp
The preceding diaphragm for placing a blacking, stop plane are parallel to plane where LED filament (5), center and LED filament (5) institute of diaphragm
The line of the heart is located in X-axis in the planes.
2. LED filament luminous intensity standard lamp according to claim 1, characterized in that the lamp housing (6) resembles a pear in shape；Institute
The top for stating filament support (7) is bent to 45 degree of bendings.
3. LED filament luminous intensity standard lamp according to claim 2, characterized in that the lamp housing (6) is A80-A170
Blister.
4. according to the LED filament luminous intensity standard lamp described in claim 1-3 any one, characterized in that the lamp housing (6)
Front surface is more than or equal to 2/5 to less than 1/2 blacking.
5. LED filament luminous intensity standard lamp according to claim 1, characterized in that the LED filament (5) is arranged into
Open a square optical transmission window (8) in the blacking surface of square filament plane, lamp housing (6).
6. LED filament luminous intensity standard lamp according to claim 1, characterized in that the LED filament (5) is arranged into
Open a rectangular optical transmission window (8) in the blacking surface of rectangle filament plane, lamp housing (6).
7. LED filament luminous intensity standard lamp according to claim 5 or 6, characterized in that the optical transmission window (8)
Side ratio filament flat edge is grown up 2-10mm.
8. LED filament luminous intensity standard lamp according to claim 1, characterized in that place one before lamp at 15-30mm and apply
Black diaphragm, the diaphragm aperture efficiency filament flat edge are grown up 3-8mm.
9. LED filament luminous intensity standard lamp according to claim 1, characterized in that the heat radiation protection gas is nitrogen
Gas or helium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610113751.3A CN105570701B (en) | 2016-02-29 | 2016-02-29 | A kind of LED filament luminous intensity standard lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610113751.3A CN105570701B (en) | 2016-02-29 | 2016-02-29 | A kind of LED filament luminous intensity standard lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570701A CN105570701A (en) | 2016-05-11 |
| CN105570701B true CN105570701B (en) | 2018-10-30 |
Family
ID=55881152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610113751.3A Active CN105570701B (en) | 2016-02-29 | 2016-02-29 | A kind of LED filament luminous intensity standard lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570701B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090665A (en) * | 2016-08-01 | 2016-11-09 | 佛山科学技术学院 | LED filament lamp that how photochromic many power are and preparation method thereof |
| TW201705557A (en) | 2016-10-26 | 2017-02-01 | Liquidleds Lighting Corp | LED filament having heat sink structure and LED bulb using the LED filament characterized in that electricity-conductive carrying elements of the LED filament are exposed outside a packaging layer, so as to allow LED chips to dissipate heat to the outside |
| TWI678495B (en) | 2017-03-31 | 2019-12-01 | 液光固態照明股份有限公司 | LED light fixture |
| JP6863096B2 (en) * | 2017-06-02 | 2021-04-21 | 東芝ライテック株式会社 | Leads, lead manufacturing methods, and vehicle bulbs |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203489192U (en) * | 2013-08-23 | 2014-03-19 | 上海德士电器有限公司 | Comb-type LED (light emitting diode) assembly and LED bulb lamp comprising same |
| CN103681219A (en) * | 2013-12-10 | 2014-03-26 | 詹云翔 | Luminous intensity detection standard lamp |
| CN203940268U (en) * | 2014-05-15 | 2014-11-12 | 南通南洋照明科技有限公司 | A kind of LED filament bulb |
| CN204678115U (en) * | 2015-06-09 | 2015-09-30 | 陕西科技大学 | A kind of filament LED |
| CN205606254U (en) * | 2016-02-29 | 2016-09-28 | 中国计量科学研究院 | Luminous intensity standard lamp |
-
2016
- 2016-02-29 CN CN201610113751.3A patent/CN105570701B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203489192U (en) * | 2013-08-23 | 2014-03-19 | 上海德士电器有限公司 | Comb-type LED (light emitting diode) assembly and LED bulb lamp comprising same |
| CN103681219A (en) * | 2013-12-10 | 2014-03-26 | 詹云翔 | Luminous intensity detection standard lamp |
| CN203940268U (en) * | 2014-05-15 | 2014-11-12 | 南通南洋照明科技有限公司 | A kind of LED filament bulb |
| CN204678115U (en) * | 2015-06-09 | 2015-09-30 | 陕西科技大学 | A kind of filament LED |
| CN205606254U (en) * | 2016-02-29 | 2016-09-28 | 中国计量科学研究院 | Luminous intensity standard lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105570701A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105570701B (en) | A kind of LED filament luminous intensity standard lamp | |
| AU2011300999B2 (en) | LED lamp bulb and LED lighting bar capable of emitting light over 4pi | |
| CN204387765U (en) | The emitting led bulb of 3 D stereo | |
| WO2017197794A1 (en) | Laser white light emitting apparatus for lighting or display | |
| CN107228849B (en) | The transmission-type test device and method of white light LED fluorescent powder alternating temperature spectral characteristic | |
| CN106594544A (en) | LED lamp bead capable of replacing halogen lamp and manufacturing process thereof | |
| CN105042354A (en) | 360-degree lighting bulb and processing method thereof | |
| CN203571486U (en) | Deformable LED full-angle light-emitting element bulb | |
| CN206361437U (en) | LED filament and LEDbulb lamp | |
| CN110416384A (en) | A kind of packaging method promoting LED lamp bead light efficiency | |
| CN205606254U (en) | Luminous intensity standard lamp | |
| CN103016991A (en) | Bulb of inclined and rotary combined LED (Light Emitting Diode) lamp filament structure | |
| CN105114847A (en) | Cambered special-shaped all-around illuminating LED bulb | |
| CN206018318U (en) | A kind of LEDbulb lamp of easy heat radiation low cost | |
| CN207778066U (en) | A kind of luminous flux standard lamp | |
| CN204361093U (en) | LED silk, LEDbulb lamp and light fixture | |
| CN107575755B (en) | Total luminous flux standard lamp | |
| CN207018846U (en) | A kind of LED lamp bead of alternative Halogen lamp LED | |
| Chen et al. | Optimization of helium inflating on heat dissipation and luminescence properties of the A60 LED filament lamps | |
| CN104654079A (en) | High-performance 360-degree LED (Light-Emitting Diode) lamp | |
| CN206055259U (en) | A kind of LED filament lamp | |
| RU183304U1 (en) | LED TAPE FOR LAMP | |
| CN106051509A (en) | Method for gas filling for LED filament bulb | |
| CN204459825U (en) | High-performance 360 degree of light emitting LED lamp | |
| CN204704642U (en) | A kind of single-ended full glass 360 degree of light emitting LED lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |