EP0108449A1 - Lampe électrique - Google Patents
Lampe électrique Download PDFInfo
- Publication number
- EP0108449A1 EP0108449A1 EP83201546A EP83201546A EP0108449A1 EP 0108449 A1 EP0108449 A1 EP 0108449A1 EP 83201546 A EP83201546 A EP 83201546A EP 83201546 A EP83201546 A EP 83201546A EP 0108449 A1 EP0108449 A1 EP 0108449A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- current
- fuse
- tube
- envelope
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 239000012777 electrically insulating material Substances 0.000 claims abstract description 8
- 230000001427 coherent effect Effects 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- 239000004568 cement Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000005385 borate glass Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- FJBFPHVGVWTDIP-UHFFFAOYSA-N dibromomethane Chemical compound BrCBr FJBFPHVGVWTDIP-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- ZPPSOOVFTBGHBI-UHFFFAOYSA-N lead(2+);oxido(oxo)borane Chemical compound [Pb+2].[O-]B=O.[O-]B=O ZPPSOOVFTBGHBI-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/44—One or more circuit elements structurally associated with the tube or lamp
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/62—One or more circuit elements structurally associated with the lamp
- H01K1/66—One or more circuit elements structurally associated with the lamp with built-in fuse
Definitions
- the invention relates to an electric lamp provided with a lamp envelope which is sealed in a vacuum-tight manner and which is secured at one end to a lamp cap, current-supply conductors extending from contacts on the lamp cap through the wall of the lamp envelope to a light source arranged inside the lamp envelope and a fuse being included in at least one of the current-supply conductors inside the space limited by the wall of the lamp envelope and the lamp cap, which fuse is located inside a sealed tube of electrically insulating material filled with an electrically insulating material.
- Such an electric lamp is known from the British Patent Specification 830,360.
- the fuse is included in a glass tube which is filled with glass pellets or sand and which is fused at its end with the current-supply conductor.
- the fuse is reliable and safe, but is expensive due to the two fusions.
- the invention has for its object to provide a lamp which incorporates a reliable and safe fuse of a simple and inexpensive construction.
- this is achieved in a lamp of the kind mentioned in the preamble in that the tube is sealed at its ends onto the current-supply conductor by means of a coherent mass.
- the lamp according to the invention can be manufactured in a simpler and cheaper manner in that, before the lamp cap is mounted on the lamp envelope, a tube, for example, of glass or ceramic material, is slid over the current-supply conductor until it surrounds the fuse and the tube is filled with electrically insulating material and is sealed at its end onto the current-supply conductor by providing a coherent mass.
- a tube for example, of glass or ceramic material
- the coherent mass used can consist of cement which is utilized for securing lamp caps to lamp envelopes.
- examples that can be mentioned are mixtures of talcum powder, zinc oxide and potassium silicate as well as mixtures of quartz powder, sodium silicoftuoride and sodium silicate.
- a lead borate glass may alternatively be used, which is filled, for example, with sand, hard glass powder, quartz powder, aluminium oxide powder, or calcium oxide powder, An example thereof is 3 parts by weight of glass (3 % by weight of SiO 2 , 18 % by weight of B 2 O 3 , 68 % by weight of PbO, 8 % by weight of ZnO, 3 % by weight of Al 2 O 3 ) and 1 part by weight of sand.
- the tube can be filled between its ends with glass powder, glass pellets, sand and the like.
- the tube is filled with the same cement or glass composition as that with which it is closed at its ends.
- the insulating mass need be provided only very locally to enclose the fuse on all sides.
- the mass can be provided before the lamp cap is fitted so that the fuse can be enclosed completely in a controlled manner. D ue to the fact that the fuse is embedded in an insulating mass, generally no discharge arc is formed during melting of the fuse. In cases in which an arc is formed as yet, it remains inside the tube and extinguishes rapidly.
- the construction of the lamp according to the invention is particularly suitable for heavily loaded lamps, such as halogen mains voltage lamps of high power, but the construction may also be used in other halogen lamps and in lamps which have as a light source both a filament and a discharge arc, for example, a high-pressure mercury vapour discharge arc, the filament acting at the same time as a current limiter.
- FIG. 1 An embodiment of a lamp according to the invention is shown in the drawing, the lamp envelope being shown in side elevation and the lamp cap in longitudinal sectional view.
- the lamp envelope 1 is closed at one end by a pinch 5 and is secured by means of cement 6 to a lamp cap 7.
- Current-supply conductors 2 and 3 extend from contacts 11 on the lamp cap 7 through the wall of the lamp envelope 1 to a filament 4 arranged as a light source inside this envelope.
- the lamp cap 7 has a ceramic moulding 8 which is fixed in a metal sheath 9.
- a fuse wire 10 is included in the current-supply conductor 3, which fuse wire is located inside a tube 13 of electrically insulating material (in the drawing, glass), which tube 13 is sealed at its ends onto the current-supply conductor 3 and is filled between its ends with a coherent electrically insulating mass 14.
- the mass 14 is identical with the cement 6 and consists mainly of quartz powder, zinc oxide and sodium silicate.
- the lamp shown is a halogen incandescent lamp with a gas filling consisting of krypton and methylene bromide.
- the lamp When it is operated at 225 V, the lamp consumes a power of 150 W and is intended to be used as a projection lamp.
- the lamp was operated at normal voltage and was then loaded with an overvoltage of 60 %.
- the fuse interrupted the current through the lamp 5 msec after the overvoltage was applied. Apart from the fuse wire 10 and the filament 4, the lamp was still completely intact.
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8204237 | 1982-11-02 | ||
| NL8204237 | 1982-11-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0108449A1 true EP0108449A1 (fr) | 1984-05-16 |
| EP0108449B1 EP0108449B1 (fr) | 1989-01-18 |
Family
ID=19840509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19830201546 Expired EP0108449B1 (fr) | 1982-11-02 | 1983-10-28 | Lampe électrique |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0108449B1 (fr) |
| JP (1) | JPS5969477U (fr) |
| CA (1) | CA1214202A (fr) |
| DE (1) | DE3379007D1 (fr) |
| HU (1) | HU186812B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6639364B1 (en) | 2000-06-29 | 2003-10-28 | Koninklijke Philips Electronics N.V. | Halogen incandescent capsule having filament leg clamped in press seal |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265284B (zh) * | 2013-03-15 | 2021-11-05 | 应用材料公司 | 简化的灯具设计 |
| CN110645553B (zh) * | 2013-12-19 | 2020-09-29 | 应用材料公司 | 用于可替换的灯的适配器 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB830360A (en) | 1957-04-01 | 1960-03-16 | Crompton Parkinson Ltd | Improvements relating to electric lamps and similar enclosed devices |
| US3727091A (en) * | 1971-05-11 | 1973-04-10 | Westinghouse Electric Corp | Halogen-cycle incandescent lamp having a platinized interior fuse |
-
1983
- 1983-10-27 CA CA000439819A patent/CA1214202A/fr not_active Expired
- 1983-10-28 DE DE8383201546T patent/DE3379007D1/de not_active Expired
- 1983-10-28 HU HU371383A patent/HU186812B/hu not_active IP Right Cessation
- 1983-10-28 EP EP19830201546 patent/EP0108449B1/fr not_active Expired
- 1983-10-31 JP JP16765983U patent/JPS5969477U/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB830360A (en) | 1957-04-01 | 1960-03-16 | Crompton Parkinson Ltd | Improvements relating to electric lamps and similar enclosed devices |
| US3727091A (en) * | 1971-05-11 | 1973-04-10 | Westinghouse Electric Corp | Halogen-cycle incandescent lamp having a platinized interior fuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6639364B1 (en) | 2000-06-29 | 2003-10-28 | Koninklijke Philips Electronics N.V. | Halogen incandescent capsule having filament leg clamped in press seal |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0108449B1 (fr) | 1989-01-18 |
| CA1214202A (fr) | 1986-11-18 |
| HU186812B (en) | 1985-09-30 |
| JPS6330117Y2 (fr) | 1988-08-12 |
| JPS5969477U (ja) | 1984-05-11 |
| DE3379007D1 (en) | 1989-02-23 |
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|---|---|---|---|
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