CN205606254U - Luminous intensity standard lamp - Google Patents
Luminous intensity standard lamp Download PDFInfo
- Publication number
- CN205606254U CN205606254U CN201620153581.7U CN201620153581U CN205606254U CN 205606254 U CN205606254 U CN 205606254U CN 201620153581 U CN201620153581 U CN 201620153581U CN 205606254 U CN205606254 U CN 205606254U
- Authority
- CN
- China
- Prior art keywords
- lamp
- luminous intensity
- filament
- intensity standard
- lamp housing
- 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
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model provides a LED filament luminous intensity standard lamp includes: lamp holder and lamp body are provided with glass stem, filament support, LED filament in, the lamp body seals and be filled with heat radiation protection gas, filament support draws forth two seal wires and is anodal line and negative pole line respectively on being fixed in glass stem in the glass stem, anodal line and negative pole line are continuous with the two poles of the earth of lamp holder respectively, on the LED filament was fixed in filament support, in a plane in the lamp body was arranged to equidistant parallel, planar center was unanimous with the center of lamp body, lamp body surface blacking is opened has diaphanous window, and diaphanous window lies in the center of scribbling black flour and belongs to planar center unanimously with the LED filament. The utility model discloses a LED filament luminous intensity standard lamp simple structure, easily debug, level and vertical angle characteristic are good, the illumination field distribution is even, have the advantage that stability is good, the antidetonation is moved, the yield is high, with low costs, and can show the uncertainty who reduces the measuring result that the spectrum mismatch arouses.
Description
Technical field
This utility model belongs to optical radiation measurement field, relates to a kind of luminous intensity standard lamp, particularly relates to one and can meet the luminous intensity standard lamp that the photometric parameter that luminous body is light emitting diode (LED) light source is measured.
Background technology
Luminous intensity standard lamp is to preserve and the standard metrology appliance of transmission unit of luminous intensity value.Unit of luminous intensity's candela (cd) is one of seven ultimate units of SI, remaining light unit such as lm (lumen), lx (unit of illuminance), cd/m2(brill) is all derived by unit of luminous intensity.Traditional luminous intensity standard lamp is electric filament lamp, its luminous body is arranged to plane, measure intensity of illumination distribution in plane uniform, by the design of lamp housing shape, surface blacking or additional diaphragm, make every effort to avoid or reduce veiling glare, make it have good horizontal and vertical angular characteristics and excellent value repeatability, measure the front surface that starting point is filament of position.
Traditional incandescent strength criterion lamp is due to complex manufacturing technology, and price is high, the luminous intensity standard lamp of some reputable brands partial outage, is difficult at present obtain from commercial channels.LED has significant energy-saving effect, along with the continuous reduction of price, is the principal item substituting conventional light source.Existing luminosity value transport system is based on incandescent standard lamp, but the spectral power distribution of LED is different from incandescent source, when directly measuring LED light source with incandescent standard lamp, the deviation of the measurement result caused due to spectral mismatch error is even as high as 30%, it is impossible to meet the needs of LED industry development.In consideration of it, optical radiation measurement field is the luminous intensity standard lamp of LED in the urgent need to luminous body, to improve the accuracy that LED measures, and the present situation of incandescent strength criterion lamp shortage can be solved.
LED filament light fixture has good value repeatability, is only 8-12min preheating time, is arranged by rational filament and heat dissipation design makes the making of the luminous intensity standard lamp with LED as luminous body be possibly realized.For meeting optical radiation measurement field to the demand that luminous body is LED luminous intensity standard lamp, this utility model provides a kind of luminous intensity standard lamp with LED filament as luminous body, good stability, processing technology is simple, yield rate is high, low cost, and service life is much larger than traditional incandescent standard lamp；When directly using luminous intensity standard lamp of the present utility model calibration for measuring illumination meter and the luminance meter of LED light source, it is not necessary to carry out spectral mismatch correction, simplify data handling procedure.
Utility model content
This utility model is for the deficiencies in the prior art, it is provided that a kind of LED filament is the luminous intensity standard lamp of luminous body, good stability, and service life is much larger than traditional incandescent standard lamp.
A kind of luminous intensity standard lamp, including: lamp holder and lamp housing, it is provided with glass stem, filament support, LED filament in lamp housing, lamp housing seals and is filled with heat radiation protection gas；Described filament support is fixed on glass stem, draws two seal wires and be respectively positive pole line and negative pole line in glass stem, and positive pole line is connected with the two poles of the earth of lamp holder respectively with negative pole line；Described LED filament is fixed on filament support, at equal intervals parallel arrangement YZ plane in lamp housing, square or rectangle, and planar central is positioned in lamp housing in the heart；Described LED filament and the projection in XZ plane of the filament support vertical portion are misaligned；Described lamp housing front surface more than or equal to 1/3 to less than 1/2 blacking, and have the optical transmission window of a square or rectangular, optical transmission window, just to LED filament place plane, is positioned at lamp housing and is coated with the center of black flour, and the center of optical transmission window is positioned in X-axis with the line of LED filament place planar central.
Described lamp housing of the present utility model, can be the shapes such as pyriform, cylindricality, spherical, taper.
As a preferred version of the present utility model, described lamp housing resembles a pear in shape, and lamp housing is preferably A80-A170 cell-shell, more preferably A125 cell-shell.
As another preferred version of the present utility model, described lamp housing is cylindrical, and cylindrical body diameter is preferably 19-61mm, more preferably 27mm.
Preferably, described lamp housing is colourless, transparent glass, does not has obvious anti-alkali, sends out the defects such as mist, striped, bubble, the grains of sand, scratch at optical transmission window.
As a preferred version of the present utility model, for pyriform lamp housing, a bending is arranged at the top of described filament support, it is achieved described LED filament and the projection in XZ plane of the filament support vertical portion are misaligned.
As a preferred version of the present utility model, the vertical portion (parallel with Z axis) of described filament support and LED filament projection in XZ plane at a distance of 1-6mm, more preferably at a distance of 4mm.
As an embodiment of the present utility model, described lamp housing front surface in addition to optical transmission window more than or equal to 1/3 to less than 1/2, preferably greater than or equal to 2/5 to less than 1/2 part, with auto lamp shading liquid blacking toasted, auto lamp shading liquid is typically a kind of high-temperature resistant coating formulated by organic siliconresin and organic solvent.Such structure effectively reduces the veiling glare caused by filament reflection image and filament support.
As a preferred version of the present utility model, described LED filament is arranged into square filament plane, and a foursquare optical transmission window is opened on the blacking surface of lamp housing.
As another preferred version of the present utility model, described LED filament is arranged into rectangle filament plane, and a rectangular optical transmission window is opened on the blacking surface of lamp housing.
As a preferred embodiment, the side ratio filament flat edge of described optical transmission window is grown up 2-10mm, the biggest 4-8mm.
Preferably, described heat radiation protection gas is noble gas, including nitrogen or helium, more preferably helium.Such design can effectively reduce the junction temperature of LED, improves the stability of lamp, extends the life-span of lamp.
Preferably, described 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 bottom is iron nickel plating, is fixed on glass bulb by filament glass supporter by molybdenum filament.
Preferably, described luminous intensity standard lamp uses direct current current constant mode to power.
The simple in construction of luminous intensity standard lamp that this utility model provides, filament support and filament XZ plane projection the most in the same plane, it is easy to debuging of lamp；Horizontal and vertical angular characteristics is good；In measuring surface, illumination field distribution is uniform；Compared with tradition incandescent standard lamp, preheating time is suitable, value repeatability is more preferable, life-span is longer, have that good stability, anti-vibration, yield rate be high, the advantage of low cost, and calibration for measuring illumination meter and the luminance meter of LED light source time can be substantially reduced the uncertainty of the measurement result caused due to spectral mismatch.
Accompanying drawing explanation
Fig. 1 is the coordinate system schematic diagram of a kind of luminous intensity standard lamp described in the utility model, and coordinate axes initial point is positioned at lamp housing center.
Fig. 2 is the sectional structure schematic diagram of a kind of pyriform luminous intensity standard lamp described in the utility model.
Fig. 3 is the front view of a kind of pyriform luminous intensity standard lamp described in the utility model.
Fig. 4 is the rearview of a kind of pyriform luminous intensity standard lamp described in the utility model.
Fig. 5 is the side view of a kind of pyriform luminous intensity standard lamp described in the utility model.
Fig. 6 is the sectional structure schematic diagram of a kind of cylindrical light emitting strength criterion lamp described in the utility model.
Fig. 7 is the front view of a kind of cylindrical light emitting strength criterion lamp described in the utility model.
Description of reference numerals: 1-lamp holder；2-negative pole line；3-glass stem；4 positive pole lines；5-LED filament；6-lamp housing；7-filament support；7a molybdenum filament；7b glass；7c iron nickel plating；8-optical transmission window.
Detailed description of the invention
It is described below and illustrates exemplary of the present utility model.The program has been included in luminous intensity standard lamp.Certainly, it will be apparent to those skilled in the art that preferred embodiment discussed below is inherently exemplary, and can be changed in the case of without departing from scope and spirit of the present utility model.But, in order to clear and accurate, described exemplary discussed below can include preferred step, method and feature, and those of ordinary skill in the art are not it will be appreciated that these preferred steps, method and feature are the essential conditions in the range of this utility model that falls.
Embodiment 1
A kind of pyriform luminous intensity standard lamp as Figure 2-Figure 5, including: lamp holder 1 and lamp housing 6, it is provided with glass stem 3, filament support 7, LED filament 5 in lamp housing 6, lamp housing 6 seals and is filled with helium；Filament support 7 is fixed on glass stem 3, draws two seal wires and be respectively positive pole line 4 and negative pole line 2 in glass stem 3, and positive pole line 4 is connected with the center of lamp holder 1, and negative pole line 2 is connected with the edge spiral of lamp holder 1；LED filament 5 totally 6, the every long 31mm of filament, wide 1.6mm, rated power 0.8W, electric current 12mA, colour temperature 2670K, color rendering index 81, the two ends of filament are individually fixed in the upper and lower of filament support 7, and LED filament 5 uses every 3 one group parallel connection, after the mode connected again by square (length of side 31mm) plane in lamp housing of the parallel arrangement at equal intervals, the center of square-shaped planar is consistent with the center of lamp housing 6；Lamp housing 6 selects A125 cell-shell, uses high-quality glass material.The car light shading liquid blacking of 9/20 surface of lamp housing 6, and have the optical transmission window 8 of a square (length of side 37mm), optical transmission window 8 is positioned at the center being coated with black flour, and just to LED filament place plane, its center is positioned in X-axis with the line of LED filament place planar central.
The driving electric current of above-mentioned pear-shaped LED lamp silk luminous intensity standard lamp is 30mA, and voltage is 133V, uses existing photometric measurement experimental provision to be tested its preheating time, value repeatability, illumination field uniformity and luminous intensity.Its preheating time is 10min, and luminous intensity value repeatability is 0.06%, and in lighting 1200 hours, value maximum is changed to 0.32%.During test, lamp is 1.2m with the distance of detector receiving plane, detector diaphragm diameter 8mm, test result be the illumination field inhomogeneities (at central point normalizing) in the illumination field of distance lamp 1.2m in 10mm × 10mm region be 0.4%, luminous intensity is 43.01cd.
Embodiment 2
A kind of cylindrical light emitting strength criterion lamp as Figure 6-Figure 7, including: lamp holder 1 and lamp housing 6, it is provided with glass stem 3, filament support 7, LED filament 5 in lamp housing 6, lamp housing 6 seals and is filled with helium；Filament support 7 is fixed on glass stem 3, draws two seal wires and is respectively positive pole line 4 and negative pole line 2, be connected with the two ends of lamp holder respectively in glass stem 3；LED filament 5 totally 2, the every long 31mm of filament, wide 1.6mm, rated power 0.8W, electric current 12mA, colour temperature 2670K, color rendering index 81, the two ends of filament are individually fixed in middle part and the bottom of filament support 7, and filament support 7b (glass) is fixed on the top of lamp housing 6 by another filament support 7a (molybdenum filament)；LED filament 5 uses series system to be connected, and in a rectangle (length of side 31mm × 18mm) plane being arranged in lamp housing, the center of rectangular planes is consistent with the center of lamp housing 6；Lamp housing 6 diameter 27mm, uses high grade quartz glass material.2/5 surface car light shading liquid blacking of lamp housing 6 also has the optical transmission window 8 of a rectangle (length of side 35mm × 22mm), and just to LED filament 5 place plane, its center is positioned in X-axis with the line of LED filament 5 place planar central.
The driving electric current of above-mentioned cylindrical LED filament luminous intensity standard lamp is 12mA, and voltage is 133V, uses existing photometric measurement experimental provision to be tested preheating time of this cylindrical LED filament luminous intensity standard lamp, value repeatability, illumination field uniformity.Its preheating time is 10min, and luminous intensity value repeatability is 0.06%, and in lighting 1200 hours, value maximum is changed to 0.4%.During test, lamp is 1.0m with the distance of detector receiving plane, detector diaphragm diameter 8mm, test result be the illumination field inhomogeneities (at central point normalizing) in the illumination field of distance lamp 1.0m in 10mm × 10mm region be 0.5%, luminous intensity is 16.32cd.
Claims (19)
1. a luminous intensity standard lamp; including: lamp holder (1) and lamp housing (6); being provided with glass stem (3), filament support (7), LED filament (5) in lamp housing (6), lamp housing (6) seals and is filled with heat radiation protection gas；
Described filament support (7) is fixed on glass stem (3), described glass stem (3) two seal wires of interior extraction are respectively positive pole line (4) and negative pole line (2), positive pole line (4) and negative pole line (2) the two poles of the earth respectively with lamp holder (1) and are connected；
Described LED filament (5) is fixed on filament support (7), at equal intervals parallel arrangement YZ plane in lamp housing, square or rectangle, and planar central is positioned in lamp housing (6) in the heart；Described LED filament (5) and the projection in XZ plane of filament support (7) vertical portion are misaligned；
Described lamp housing (6) front surface more than or equal to 1/3 to less than 1/2 blacking, and have the optical transmission window (8) of a square or rectangular, optical transmission window (8) is just to LED filament (5) place plane, being positioned at lamp housing (6) and be coated with the center of black flour, the center of optical transmission window (8) is positioned in X-axis with the line of LED filament (5) place planar central.
Luminous intensity standard lamp the most according to claim 1, is characterized in that, the vertical portion of described filament support (7) and the LED filament (5) projection in XZ plane are at a distance of 1-6mm.
Luminous intensity standard lamp the most according to claim 2, is characterized in that, the vertical portion of described filament support (7) and the LED filament (5) projection in XZ plane are at a distance of 4mm.
Luminous intensity standard lamp the most according to claim 1, is characterized in that, described lamp housing (6) resembles a pear in shape；One bending is arranged at the top of described filament support (7).
Luminous intensity standard lamp the most according to claim 4, is characterized in that, described lamp housing (6) is A80-A170 cell-shell.
Luminous intensity standard lamp the most according to claim 5, is characterized in that, described lamp housing (6) is A125 cell-shell.
Luminous intensity standard lamp the most according to claim 1, is characterized in that, described lamp housing (6) is cylindrical.
Luminous intensity standard lamp the most according to claim 7, is characterized in that, a diameter of 19-61mm of cylindrical body of described lamp housing (6).
Luminous intensity standard lamp the most according to claim 8, is characterized in that, a diameter of 27mm of described lamp housing (6).
10., according to the luminous intensity standard lamp described in claim 1-9 any one, it is characterized in that, described lamp housing (6) front surface more than or equal to 2/5 to less than 1/2 blacking.
11., according to the luminous intensity standard lamp described in claim 1-9 any one, is characterized in that, described LED filament (5) is arranged into square filament plane, and a foursquare optical transmission window (8) is opened on the blacking surface of lamp housing (6).
12., according to the luminous intensity standard lamp described in claim 1-9 any one, is characterized in that, described LED filament (5) is arranged into rectangle filament plane, and a rectangular optical transmission window (8) is opened on the blacking surface of lamp housing (6).
13. luminous intensity standard lamps according to claim 11, is characterized in that, the side ratio filament flat edge of described optical transmission window (8) is grown up 2-10mm.
14. luminous intensity standard lamps according to claim 13, is characterized in that, the side ratio filament flat edge of described optical transmission window (8) is grown up 4-8mm.
15. luminous intensity standard lamps according to claim 12, is characterized in that, the side ratio filament flat edge of described optical transmission window (8) is grown up 2-10mm.
16. luminous intensity standard lamps according to claim 15, is characterized in that, the side ratio filament flat edge of described optical transmission window (8) is grown up 4-8mm.
17. luminous intensity standard lamps according to claim 1, is characterized in that, use direct current current constant mode to power.
18. luminous intensity standard lamps according to claim 1, is characterized in that, described heat radiation protection gas is nitrogen or helium.
19. luminous intensity standard lamps according to claim 18, is characterized in that, described heat radiation protection gas is helium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153581.7U CN205606254U (en) | 2016-02-29 | 2016-02-29 | Luminous intensity standard lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153581.7U CN205606254U (en) | 2016-02-29 | 2016-02-29 | Luminous intensity standard lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205606254U true CN205606254U (en) | 2016-09-28 |
Family
ID=56961798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620153581.7U Active CN205606254U (en) | 2016-02-29 | 2016-02-29 | Luminous intensity standard lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205606254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570701A (en) * | 2016-02-29 | 2016-05-11 | 中国计量科学研究院 | Luminous intensity standard lamp with LED filaments |
-
2016
- 2016-02-29 CN CN201620153581.7U patent/CN205606254U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570701A (en) * | 2016-02-29 | 2016-05-11 | 中国计量科学研究院 | Luminous intensity standard lamp with LED filaments |
| CN105570701B (en) * | 2016-02-29 | 2018-10-30 | 中国计量科学研究院 | A kind of LED filament luminous intensity standard lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105570701B (en) | A kind of LED filament luminous intensity standard lamp | |
| CN103712106A (en) | Large-angle all-round-lighting LED bulb | |
| CN103090240B (en) | A kind of high-efficiency luminescence LED and adopt the LED of this light source | |
| CN205606254U (en) | Luminous intensity standard lamp | |
| CN202040568U (en) | LED tubular energy-saving lamp | |
| CN104930371A (en) | Single-ended full-glass 360-degree LED lamp | |
| CN209592084U (en) | A kind of light emitting diode with photon mosquito repellent | |
| CN207778066U (en) | A kind of luminous flux standard lamp | |
| Yan et al. | LED filament standard lamp for total luminous flux with uniform spatial distribution | |
| CN204361093U (en) | LED silk, LEDbulb lamp and light fixture | |
| CN201392815Y (en) | Incandescent lamp with halogen lamp | |
| CN203656652U (en) | Omnibearing LED (Light Emitting Diode) lamp bulb | |
| CN201269439Y (en) | Projection LED grille lamp | |
| CN107575755B (en) | Total luminous flux standard lamp | |
| CN102278639A (en) | Bulb with annularly arranged light sources in printed circuit board (PCB) module form | |
| CN205579179U (en) | High -brightness light -emitting dioxide (LED) lamp | |
| CN206478469U (en) | A kind of adjustable LED candle lamp | |
| CN204704642U (en) | A kind of single-ended full glass 360 degree of light emitting LED lamp | |
| CN203273437U (en) | Adjustable color-changing lamp | |
| CN208240614U (en) | Full spectrum ceramics xenon discharge lamp | |
| CN203322908U (en) | LED spotlight with ceramic housing | |
| CN202733549U (en) | Screw-in type light-emitting diode (LED) module tube lamp | |
| CN203463966U (en) | LED fluorescent lamp | |
| CN202855712U (en) | Built-in low frequency bulb electrodeless lamp | |
| CN211738706U (en) | Lantern lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |