CN205984895U - Discharge lamp - Google Patents
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- CN205984895U CN205984895U CN201621042913.0U CN201621042913U CN205984895U CN 205984895 U CN205984895 U CN 205984895U CN 201621042913 U CN201621042913 U CN 201621042913U CN 205984895 U CN205984895 U CN 205984895U
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Abstract
The utility model provides a can restrain the discharge lamp who lights with the low -power who cracks at the sealing. The discharge lamp that the related discharge lamp of embodiment lighted for power above with 10W (watt) in the stable point lamp -hour and below the 30W (watt). Discharge lamp possesses: the illuminating part that has discharge space in inside, set up in the sealing of the tip of illuminating part, one end set up in discharge space's the inside and the other end set up in the electrode of the inside of sealing, set up in the inside of sealing and twine in the coil of electrode. The G1 that the following formula is showed is more than the 20W (watt) and below the 45W (watt), G1= [ (2 C+E) E ] Q, and wherein, C does the line footpath (mm) of coil, E do the thickness size (mm) of electrode, Q do the stable point lamp -hour apply power (watt).
Description
Technical field
Embodiment of the present utility model is related to a kind of discharge lamp.
Background technology
There is a kind of discharge lamp, it possesses：The illuminating part internally with discharge space, the end being arranged at illuminating part close
Envelope portion, one end are arranged at the inside of discharge space and the other end be arranged at sealing inside electrode.
The part of enclosed electrode in sealing for this discharge lamp cracks sometimes.If sealing cracks,
Then enclose metal halide in discharge space etc. to leak via crackle, may result in lamp and do not work.Therefore, it is proposed to one
Plant in the inside of sealing, the technology of wound around coil on electrode.
In recent years, from the demand of power saving, it is desirable to have one kind is when stablizing lighting with 30W (watt) (such as 25W below
(watt)) the discharge lamp lighted of power.If however, discharge lamp is lighted with 30W (watt) power below, existing and easily produce
The problem of raw flicker.Now, as long as reducing the thickness size of electrode and improving electric current density, you can the generation of suppression flicker.But
It is that, if reducing the thickness size of electrode, sealing easily cracks.
Therefore, it is intended that research and development a kind of can suppress that sealing cracks when stablizing lighting with 30W (watt) below
The discharge lamp lighted of power.
Patent documentation 1：Japanese Unexamined Patent Publication 2009-123415 publication
Content of the invention
Problem to be solved in the utility model be to provide a kind of can suppress that sealing cracks with low-power
The discharge lamp lighted.
Discharge lamp involved by embodiment be when stablizing lighting with more than 10W (watt) and 30W (watt) below
The discharge lamp that power is lighted.Discharging lamps and lanternses are standby：Internally there is the illuminating part of discharge space；It is arranged at the end of described illuminating part
Sealing；One end is arranged at the inside of described discharge space and the other end be arranged at described sealing inside electrode；If
The inside being placed in described sealing and the coil being wound in described electrode.G1 represented by following formula is more than 20W (watt) and 45W
(watt) below, G1=[(2 × C+E)/E] × Q, wherein, the thickness chi that line footpath (mm) that C is described coil, E are described electrode
Very little (mm), Q are the described applying power (watt) stablized during lighting.
According to embodiment of the present utility model, provide and a kind of can suppress what sealing cracked to light with low-power
Discharge lamp.
Brief description
Fig. 1 is illustrative for the schematic diagram of the discharge lamp 100 involved by present embodiment.
Fig. 2 is illustrative for the photo of residual stress σ 1.
Fig. 3 is illustrative for the chart of the relation between residual stress σ 1 and leakage generation rate.
Fig. 4 is illustrative for line footpath (thickness size) C of coil 33, pitch size P of coil 33, the thickness chi of electrode 32
The schematic diagram of very little (being diameter dimension when section shape is circular) E.
Fig. 5 is illustrative for the chart of the relation between G1 and leakage generation rate.
Fig. 6 is illustrative for the chart of the relation between G1 and colourity rate of change.
Fig. 7 is illustrative for the chart of the relation between G2 and leakage generation rate.
Fig. 8 is illustrative for the chart of the relation between G2 and colourity rate of change.
In figure：1- inner tube, 2- metal halide, 5- outer tube, 11- illuminating part, 12- sealing, 32- electrode, 100- electric discharge
Lamp, 101- pipe cap, 102- base, 111- discharge space.
Specific embodiment
Discharge lamp involved by embodiment be when stablizing lighting with more than 10W (watt) and 30W (watt) below
The discharge lamp that power is lighted.Discharging lamps and lanternses are standby：Internally there is the illuminating part of discharge space；It is arranged at the end of described illuminating part
Sealing；One end is arranged at the inside of described discharge space and the other end be arranged at described sealing inside electrode；If
The inside being placed in described sealing and the coil being wound in described electrode.G1 represented by following formula is more than 20W (watt) and 45W
(watt) below, G1=[(2 × C+E)/E] × Q, wherein, the thickness chi that line footpath (mm) that C is described coil, E are described electrode
Very little (mm), Q are the described applying power (watt) stablized during lighting.
According to this discharge lamp, even the discharge lamp lighted with low-power is it is also possible to suppression sealing cracks.Cause
This, can suppress the generation leaking.And, colourity rate of change can also be suppressed to become big.
Discharge lamp involved by embodiment be when stablizing lighting with more than 10W (watt) and 30W (watt) below
The discharge lamp that power is lighted.Discharging lamps and lanternses are standby：Internally there is the illuminating part of discharge space；It is arranged at the end of described illuminating part
Sealing；One end is arranged at the inside of described discharge space and the other end be arranged at described sealing inside electrode；If
The inside being placed in described sealing and the coil being wound in described electrode.G2 represented by following formula be more than 50W (watt) and
250W (watt) below, G2=[(2 × C+E)/E] × Q × (P/C), wherein, C is the line footpath (mm) of described coil, E be described
The pitch size that the thickness size (mm) of electrode, Q are the described applying power (watt) stablized during lighting, P is described coil
(mm).
According to this discharge lamp, even the discharge lamp lighted with low-power is it is also possible to suppression sealing cracks.Cause
This, can suppress the generation leaking.And, colourity rate of change can also be suppressed to become big.
In addition, in above-mentioned discharge lamp, described stablize lighting when, the residual stress in described sealing can be
20kg/cm2Below.
Thereby, it is possible to more efficiently suppress sealing to crack.
Hereinafter, referring to the drawings embodiment is illustrated.In addition, in the drawings phase is marked to identical constitutive requirements
Same symbol, and suitable detailed.
Discharge lamp involved by embodiment of the present utility model for example can be used as the HID for car headlamp
(High Intensity Discharge, high intensity discharge) lamp.It is the HID lamp for car headlamp in discharge lamp
When, so-called horizontal lighting can be carried out.
The purposes of the discharge lamp involved by embodiment of the present utility model is not limited to car headlamp, and here is only made
Illustrate the situation during HID lamp that discharge lamp is for car headlamp for an example.
Fig. 1 is illustrative for the schematic diagram of the discharge lamp 100 involved by present embodiment.
In addition, in FIG, the front direction in the case that discharge lamp 100 is installed on automobile is set to front, by rear direction
It is set to rear end side, upper direction is set to upper end side, lower direction is set to lower end side.
As shown in figure 1, discharge lamp 100 is provided with pipe cap 101 and base 102.
Pipe cap 101 is provided with outer tube 5, inner tube 1, electrode suppor 3, supports line 35, sleeve pipe 4 and metal tape 71.
Outer tube 5 is arranged at the outside of inner tube 1 and is arranged to the same core with inner tube 1.That is, pipe cap 101 has by outer tube 5 and inner tube
The double-sleeve structure of 1 composition.Outer tube 5 engages (deposition) near the cylindrical portion 14 of inner tube 1.
It is formed in the closing space between inner tube 1 and outer tube 5 and be sealed with gas.Enclosing gas can be being capable of medium resistance
The gas of gear electric discharge.Enclosing gas can be for example selected from one of neon, argon, xenon, nitrogen gas, or can also
It is the mixed gas of these gases.The inclosure pressure of gas is below 0.3atm for example under room temperature (25 DEG C).In addition, gas
Enclosing pressure is below 0.1atm preferably under room temperature (25 DEG C).
Outer tube 5 preferably close to the thermal coefficient of expansion of inner tube 1 material and has the material of ultraviolet barrier by thermal coefficient of expansion
Material is made.Outer tube 5 can be made up of the quartz glass being added with the such as oxide of titanium, cerium, aluminum etc..
Inner tube 1 is made up of the material with light transmission and thermostability.Inner tube 1 for example can be made up of quartz glass etc..
Inner tube 1 has illuminating part 11, sealing 12, boundary portion 13 and cylindrical portion 14.
Illuminating part 11 has the outer shape of generally oblong body.Illuminating part 11 is arranged near the central authorities of inner tube 1.Illuminating part
11 sizes (spheroid length) in the axial direction of inner tube 1 can be for example 8mm.Illuminating part 11 is in the axial direction with inner tube 1 just
The size on direction handed over can be for example 5mm.
It is internally provided with discharge space 111 in illuminating part 11.The middle body of discharge space 111 is in generally a cylindrical shape.
The two end portions of discharge space 111 are in substantially coniform.
It is sealed with discharge medium in discharge space 111.Discharge medium includes metal halide 2 and noble gases.
Metal halide 2 for example can include the halogenide of indium, the halogenide of sodium, the halogenide of scandium, halogenide of zinc etc..
As halogen, for example, can use iodine.But it is also possible to replace iodine using bromine or chlorine etc..In addition, going out from the viewpoint of environmental protection
Send out, discharge medium can not also be mercurous.
In addition, the component of metal halide 2 is not defined to illustrate, can suitably be changed.
Enclosing the noble gases in discharge space 111 can be for example xenon.And, in addition to xenon, indifferent gas
Body can also use neon, argon, Krypton etc., or uses the mixed gas after these combination of gases.The envelope of noble gases
Enter pressure to be changed according to purpose.For example it is desirable to when increasing total light flux, preferably be set to enclosing pressure in room temperature
It is more than 10atm and below 20atm under (25 DEG C).
Sealing 12 is plate-shaped, and it is individually coupled to the both ends of illuminating part 11.Sealing 12 for example can be by compression
Sealing Method is made.In addition, sealing 12 can also be made by collapsed seal method, thus cylindrical.In a sealing 12
On be bonded to cylindrical portion 14 via boundary portion 13.
Boundary portion 13 and cylindrical portion 14 are engaged in the end with illuminating part 11 side opposite side of sealing 12.In addition,
Illuminating part 11, sealing 12, boundary portion 13 and cylindrical portion 14 can form as one.
Electrode suppor 3 is arranged at the inside of sealing 12.
Electrode suppor 3 has metal forming 31, electrode 32, coil 33 and wire 34.
Metal forming 31 is arranged at the inside of sealing 12.Metal forming 31 be engaged in electrode 32 with discharge space 111 side phase
The vicinity of the end of anti-side.
Metal forming 31 is in lamellar, for example, can be made up of molybdenum, rhenium molybdenum, tungsten, rhenium tungsten etc..
Electrode 32 is in wire.The section shape of electrode 32 can be for example circle.
The thickness size (being diameter dimension in the case that section shape is circle) of electrode 32 can be more than 0.20mm
And below 0.33mm.Even consequently, it is possible to when stablizing lighting with more than 10W (watt) and 30W (watt) power below
The discharge lamp 100 lighted also can suppress to produce flicker.
In addition, the thickness size of electrode 32 need not be constant on the bearing of trend of electrode 32.For example, the thickness chi of electrode 32
The very little leading section side that can also be set to is coarser than base end part side.In addition, the leading section of electrode 32 can also be spherical.Alternatively, it is also possible to
As dc point lamp type, the thickness of an electrode is sized differently than the thickness size of another electrode.
Electrode 32 for example can be made up of pure tungsten, Doped Tungsten, rhenium tungsten etc..In addition, electrode 32 can contain thorium it is also possible to not
Thoriated.
One side end of electrode 32 is to prominent in discharge space 111.That is, one end of electrode 32 is arranged at discharge space 111
Inside, the other end is arranged at the inside of sealing 12.A pair of electrodes 32 is arranged to opposite each other across predetermined distance.One
Can be for example more than 3.4mm and below 4.4mm to the front end of electrode 32 distance (interelectrode distance) each other.
The end side of electrode 32 is engaged near the end of illuminating part 11 side of metal forming 31.Electrode 32 and metal forming
31 joint can be fetched by such as Laser Welding and carry out.
Coil 33 can be for example the metal wire being made up of Doped Tungsten.Coil 33 is arranged at the inside of sealing 12.Coil
33 outsides being wound in electrode 32.
Coil 33 is used for suppressing sealing 12 to crack.In addition, describe relevant suppression sealing 12 in detail below producing
The content of raw crackle.
Wire 34 is in wire.The section shape of wire 34 can be for example circle.Wire 34 for example can be made up of molybdenum etc..
One side end side engagement of wire 34 is near metal forming 31 with the end of illuminating part 11 side opposite side.Wire 34 and metal
The joint of paper tinsel 31 can be fetched by Laser Welding and carry out.The end side side of wire 34 extends to the outside of inner tube 1.
Line 35 is supported to be in L-shaped, it is engaged in the end of the wire 34 drawn from the front of discharge lamp 100.Support line
35 and the joint of wire 34 can be fetched by Laser Welding and carry out.Support line 35 for example can be made up of nickel.
Sleeve pipe 4 covers the part extending in parallel with inner tube 1 supporting line 35.Sleeve pipe 4 is for example cylindrical.Sleeve pipe 4 is for example
Can be made up of pottery.
Metal tape 71 is fixed near the end of the rear end side of outer tube 5.
Base 102 has：Main part 6, installation accessory 72, bottom terminals 81 and sidepiece terminal 82.
Main part 6 is made up of Ins. ulative material such as resins.In being internally provided with of main part 6：The rear end side of wire 34,
The rear end side of support line 35, the rear end side of sleeve pipe 4.
Installation accessory 72 is arranged at the end of main part 6.Installation accessory 72 is arranged at front.Install and use accessory 72
Project from main part 6.Install and keep metal tape 71 with accessory 72.By keeping metal tape 71 with installation accessory 72, so that
Pipe cap 101 is held in base 102.
Bottom terminals 81 are arranged at the inside of main part 6.Bottom terminals 81 are arranged at rear end side.Bottom terminals 81 are by conduction
Property material is made.Bottom terminals 81 are electrically connected with wire 34.
Sidepiece terminal 82 is arranged at the side wall of main part 6.Sidepiece terminal 82 is arranged at rear end side.Sidepiece terminal 82 is by conduction
Property material is made.Sidepiece terminal 82 electrically connects with supporting line 35.
Bottom terminals 81 and sidepiece terminal 82 are electrically connected with lamp circuit (not shown).Now, bottom terminals 81 and point
The high-pressure side electrical connection of circuit for lamp.Sidepiece terminal 82 is electrically connected with the low-pressure side of lamp circuit.
In the case that discharge lamp 100 is car headlamp, discharge lamp 100 is mounted to central shaft (pipe axle) and is in substantially
Horizontality and support line 35 to be located at substantially lower end side (lower section).In addition, being referred to as lighting the discharge lamp 100 being mounted to the direction
Horizontal lighting.
In addition, the discharge lamp 100 involved by present embodiment is lower powered discharge lamp.
Therefore, lamp circuit when stablizing lighting with more than 10W (watt) and 30W (watt) power below lights electric discharge
Lamp 100.
Then, the generation to the crackle of sealing 12 illustrates.
It has been observed that when stablizing lighting with more than 10W (watt) and 30W (watt) power below lights discharge lamp 100.
This flicker is easily produced with the discharge lamp 100 that low-power is lighted.Now, as long as reducing the thickness size of electrode 32 improving electricity
Current density, you can suppression produces flicker.Therefore, in discharge lamp 100, the thickness size of electrode 32 (is circle in section shape
When be diameter dimension) be set to more than 0.20mm and below 0.33mm.Therefore, even when stablizing lighting with 10W (watt) with
The discharge lamp 100 that upper and 30W (watt) power below is lighted also can suppress the generation flashing.
Here, in the case that the material of sealing 12 is quartz glass, linear expansion coefficient is 8.5 × 10- 6/ DEG C left side
Right.In the case of the materials'use tungsten of electrode 32, linear expansion coefficient is 4.3 × 10- 6/ DEG C about.Therefore, in lighting
(during high temperature), the variable quantity that the variable quantity (swell increment) of the thickness size of electrode 32 is less than the thickness of sealing 12 (expands
Amount).As a result, in lighting, producing the stress σ in the direction from electrode 32 peel seal portion 12.
Fig. 2 is illustrative for the photo of residual stress σ 1.
In lighting, produce stress σ in the periphery of electrode 32.Now, if stress σ increases to a certain extent, in electrode
Sliding etc. is produced, thus stress σ can be relaxed between 32 and sealing 12.Therefore, residual stress σ 1 shown in Fig. 2 can become
Little.
But, if reducing the thickness size of electrode 32, the variable quantity of the thickness size of the electrode 32 during lighting (expands
Amount) and the difference of the variable quantity (swell increment) of thickness of sealing 12 diminish, the stress σ of therefore generation can diminish.If producing
Stress σ become too small, then be difficult to produce sliding etc. between electrode 32 and sealing 12, lead to stress σ to be difficult to be relaxed.
Therefore, residual stress σ 1 can become big on the contrary.
If residual stress σ 1 becomes big, easily crack in sealing 12.If sealing 12 cracks, enclose in
Metal halide 2 grade in discharge space 111 leaks via crackle, may result in lamp and does not work.
Fig. 3 is illustrative for the chart of the relation between residual stress σ 1 and leakage generation rate.
If from the figure 3, it may be seen that residual stress σ 1 is 20kg/cm2Hereinafter, then the generation leaking can be suppressed.
Fig. 4 is illustrative for the thick of line footpath (thickness size) C, pitch size P of coil 33 and the electrode 32 of coil 33
The schematic diagram of thin size (being diameter dimension in the case that section shape is circle) E.
Wherein, pitch size P of line footpath C of coil 33 and coil 33 can the contacting with electrode 32 of interference seal portion 12
Partial area.That is, if line footpath C of coil 33 is thicker and pitch size P of coil 33 diminishes, sealing 12 with electrode 32
The area of the part of contact can diminish.If the area of the part being contacted with electrode 32 of sealing 12 is diminished, in electrode 32 He
Easily produce sliding etc. between sealing 12, thus stress σ is readily obtained mitigation.
Thickness size E of electrode 32 and the applying power Q stablizing during lighting interfere the stress σ producing or residual stress σ
1.That is, if it has been observed that thickness size E of electrode 32 diminishes, the stress σ producing can diminish.If in addition, stablizing applying during lighting
Plus power Q diminishes, then the stress σ producing can diminish.If however, the stress σ producing becomes too small, in electrode 32 and sealing
It is difficult between 12 produce sliding etc., thus stress is difficult to be relaxed.
According to the opinion of inventor of the present utility model, if based on the thickness chi by line footpath C (mm) of coil 33, electrode 32
Very little E (mm) and the value stablized the following formula (1) that applying power Q (watt) during lighting constitutes and obtain are more than predetermined value, then
Residual stress σ 1 can be made to become 20kg/cm2Below.As a result, the generation leaking can be suppressed.
G1=[(2 × C+E)/E] × Q (1)
Wherein, line footpath C of coil 33 is set to more than 0.04mm and below 0.09mm.
Thickness size E of electrode 32 is set to more than 0.20mm and below 0.33mm.
Stablize applying power Q during lighting and be set to more than 10W (watt) and 30W (watt) below.
Fig. 5 is illustrative for the chart of the relation between G1 and leakage generation rate.
As shown in Figure 5, if making G1 become more than 20W (watt), the generation leaking can be suppressed.
But, if the value of G1 is excessive, stress σ can become too much, between leading to produce between electrode 32 and sealing 12
Gap.And, if producing gap between electrode 32 and sealing 12, enclose metal halide 2 in discharge space 111 etc.
Gap can be invaded, colourity rate of change can be led to become big.If colourity rate of change becomes big, the quality of discharge lamp 100 can decline.
Fig. 6 is illustrative for the chart of the relation between G1 and colourity rate of change.
It will be appreciated from fig. 6 that if G1 is more than 45W (watt), colourity rate of change becomes big.
Therefore, G1 is preferably more than 20W (watt) and 45W (watt) below.
In addition, according to the opinion of inventor of the present utility model, if based on by line footpath C (mm) of coil 33, electrode 32
Thickness size E (mm), stablize the following formula that pitch size P (mm) of applying power Q (watt) during lighting and coil 33 is constituted
(2) value obtained is more than predetermined value, then residual stress σ 1 can be made to become 20kg/cm2Below.As a result, can suppress
The generation of leakage.
G2=[(2 × C+E)/E] × Q × (P/C) (2)
Wherein, line footpath C of coil 33 is set to more than 0.04mm and below 0.09mm.
Thickness size E of electrode 32 is set to more than 0.20mm and below 0.33mm.
Stablize applying power Q during lighting and be set to more than 10W (watt) and 30W (watt) below.
Pitch size P of coil 33 is set to more than 0.04mm and below 0.8mm.
Fig. 7 is illustrative for the chart of the relation between G2 and leakage generation rate.
As shown in Figure 7, if G2 for 250W (watt) below, can suppress the generation leaking.
But, if the value of G2 is too small, stress σ can become too much, between leading to produce between electrode 32 and sealing 12
Gap.And, if producing gap between electrode 32 and sealing 12, enclose metal halide 2 in discharge space 111 etc.
Gap can be invaded, colourity rate of change can be led to become big.If colourity rate of change becomes big, the quality of discharge lamp 100 can decline.
Fig. 8 is illustrative for the chart of the relation between G2 and colourity rate of change.
As shown in Figure 8, if G2 is less than 50W (watt), colourity rate of change becomes big.
Therefore, G2 is preferably more than 50W (watt) and 250W (watt) below.
More than, some embodiments of the present utility model are illustrated, but these embodiments are merely illustrative,
Do not limit the intention of utility model scope.These new embodiments can be implemented in other various modes, without departing from
In the range of this utility model objective, various omissions, displacement, change etc. can be carried out.These embodiments or its deformation belong to
In scope of the present utility model or objective, and it is also contained in the utility model described in technical scheme and its equivalent scope
Interior.In addition, aforesaid each embodiment can be mutually combined enforcement.
Claims (3)
1. a kind of when stablizing lighting with more than 10W and the discharge lamp lighted of 30W power below is it is characterised in that possess：
Internally there is the illuminating part of discharge space；
It is arranged at the sealing of the end of described illuminating part；
One end is arranged at the inside of described discharge space and the other end be arranged at described sealing inside electrode；
The inside being arranged at described sealing and the coil being wound in described electrode,
And, the G1 represented by following formula is more than 20W and below 45W,
G1=[(2 × C+E)/E] × Q,
Wherein, C be the line footpath of described coil and its unit for mm, E be described electrode thickness size and its unit for mm, Q be
The described applying power stablized during lighting and its unit are watt.
2. a kind of when stablizing lighting with more than 10W and the discharge lamp lighted of 30W power below is it is characterised in that possess：
Internally there is the illuminating part of discharge space；
It is arranged at the sealing of the end of described illuminating part；
One end is arranged at the inside of described discharge space and the other end be arranged at described sealing inside electrode；
The inside being arranged at described sealing and the coil being wound in described electrode,
And, the G2 represented by following formula is more than 50W and below 250W,
G2=[(2 × C+E)/E] × Q × (P/C),
Wherein, C be the line footpath of described coil and its unit for mm, E be described electrode thickness size and its unit for mm, Q be
Described stablize during lighting apply power and its unit be watt, P be the pitch size of described coil and its unit is mm.
3. discharge lamp according to claim 1 and 2 it is characterised in that
Described stablize lighting when, the residual stress in described sealing be 20kg/cm2Below.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015222703A JP2017091901A (en) | 2015-11-13 | 2015-11-13 | Discharge lamp |
| JP2015-222703 | 2015-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205984895U true CN205984895U (en) | 2017-02-22 |
Family
ID=58039979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621042913.0U Active CN205984895U (en) | 2015-11-13 | 2016-09-07 | Discharge lamp |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017091901A (en) |
| CN (1) | CN205984895U (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3320376B2 (en) * | 1998-03-16 | 2002-09-03 | 松下電器産業株式会社 | Discharge lamp and method of manufacturing the same |
| JP2001076676A (en) * | 1999-08-31 | 2001-03-23 | Toshiba Lighting & Technology Corp | High-pressure discharge lamp, floodlighting device, and projector device |
| JP4719105B2 (en) * | 2006-08-23 | 2011-07-06 | ハリソン東芝ライティング株式会社 | Metal halide lamp |
| EP2187428A4 (en) * | 2007-08-21 | 2012-03-14 | Harison Toshiba Lighting Corp | Metal halide lamp |
| JP5428957B2 (en) * | 2009-05-13 | 2014-02-26 | 東芝ライテック株式会社 | Discharge lamp for vehicle and discharge lamp device for vehicle |
-
2015
- 2015-11-13 JP JP2015222703A patent/JP2017091901A/en active Pending
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- 2016-09-07 CN CN201621042913.0U patent/CN205984895U/en active Active
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| JP2017091901A (en) | 2017-05-25 |
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