AU2001284539A1 - Lamp - Google Patents
LampInfo
- Publication number
- AU2001284539A1 AU2001284539A1 AU2001284539A AU2001284539A AU2001284539A1 AU 2001284539 A1 AU2001284539 A1 AU 2001284539A1 AU 2001284539 A AU2001284539 A AU 2001284539A AU 2001284539 A AU2001284539 A AU 2001284539A AU 2001284539 A1 AU2001284539 A1 AU 2001284539A1
- Authority
- AU
- Australia
- Prior art keywords
- lamp
- indicated
- battery
- light source
- switch unit
- 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
Description
Lamp
The invention relates to a battery-powered lamp, and especially a lamp comprising a light source, a battery and a switch unit which are electrically interconnected. In more specific terms, the invention relates to disposable lamps for general use. The lamps are hand-held lamps, both chargeable and non-chargeable, and of different sizes.
Ordinary lamps, particularly lamps containing replaceable batteries, light sources or other components, all have in common the problem that they corrode easily and are unreliable over a period of time. This is usually due to the penetration of moisture, resulting in corrosion of contacts between batteries, light source and switch. A result of this corrosion is that the lamp has to be shaken and knocked in order to make it work.
US-4 303 970 discloses a lamp of the type mentioned at the beginning, which is made watertight by means of a sealed housing. The lamp also contains an elastic material, such as foam rubber. The material provides electrical and thermal insulation, but contains air, thus leading amongst other things to the risk of condensation being formed inside the lamp. Optimal protection is therefore not obtained against the formation of corrosion in the electrical connections. The lamp contains a mechanical switch which is operated from the outside via sealing means around a control spindle. This represents an additional risk of penetration of air, water and vapour and of the formation of corrosion.
An object of the invention is to provide a lamp as mentioned at the beginning, which is reliable, resistant in most environments, watertight, corrosion- resistant, robust, possessing long storage durability, resistant to impact, shock and other physical stresses, and having low production costs.
A special object of the invention is to provide a lamp of this kind which can also be operated from outside by an operating body, where the operating body does not detract from qualities in the lamp such as reliability, resistance, watertightness, corrosion resistance, robustness and storage durability.
A further object is to provide a lamp of this kind which in addition is environmentally friendly, and/or a lamp of this kind which can be included in a return scheme.
The above objects are achieved by means of a lamp as set forth in the patent claims.
The invention will now be described in greater detail with reference to the drawings, in which: fig. 1 is a schematic cross section of a first embodiment of a lamp according to the invention, fig. 2 is a schematic cross section of a second embodiment of a lamp according to the invention, and fig. 3 is a schematic view from above of a third embodiment of a lamp according to the invention.
Fig. 1 illustrates a cross section of a first embodiment of a substantially rectangular lamp according to the invention. The lamp 10 consists of a light source 1, a battery 2 and a switch unit 3 which are electrically interconnected. All electrical connection points are preferably welded or soldered, thus reducing the risk of corrosion.
The light source 1 is illustrated as an incandescent lamp, but may alternatively be one or more interconnected high intensity light diodes, connected in series with a current limiting pre-resistor which may be integrated in the light diode.
All the electrical connections are located in a corrosion-free environment. This is achieved by having the light source 1, the battery 2 and the switch unit 3 all moulded in an electrically insulating moulding material, without the presence of air and/or moisture.
A suitable moulding material is polyethylene. Other examples of suitable moulding materials are polycarbonate, epoxy, polystyrene, silicone and two- component or multicomponent plastic materials.
The switch unit 3 is a sealed magnetic switch or "reed switch". The switch unit 3 is operated externally by an operating body 8 which contains a movable permanent magnet 4. An electrical connection is formed between the switch's two terminals when a magnetic field of sufficient force is created through the switch unit, such as when the magnet 4 is located in the immediate vicinity. In this embodiment the operating body is movably mounted on the outside of the lamp by means of slots or guides on the outside of the lamp's moulded main part.
The lamp also comprises a reflector 6 and a lamp lens 7, both of which are moulded in the same unit as the light source 1, the battery 2 and the switch unit 3.
Fig. 2 illustrates in cross section a second embodiment 20 of a substantially cylindrical lamp according to the invention. Identical or corresponding elements are given the same reference numerals as in fig. 1. The battery 2 in this case consists of two cylindrical cells, connected in series.
This embodiment 20 corresponds by and large with the embodiment 10 in fig. 1, except for the fact that the movable magnet 4 is attached to a circular ring 8 which is arranged to be rotated round the lamp. The ring 8 has an internal diameter which is slightly larger than the external diameter of the main part of the lamp, thus permitting rotation with a suitable degree of friction. When the ring 8 is rotated to a position where the magnet is located immediately above the magnetic switch 3, the lamp will be switched on. The main part of the lamp is provided with slots (not shown) which are suitable for holding the ring in a fixed axial position while permitting rotating movement.
In a variant of the embodiment in figure 2, the ring 8 is arranged to be moved in a spiral, i.e. with a rotating movement with a simultaneous movement in the lamp's axial direction. This can be achieved by providing the ring with an internal spiral-shaped slot, adapted to fit a fixed raised portion on the outside of the lamp's main part.
Fig. 3 is a schematic view from above of a third embodiment 30 of a miniaturised lamp according to the invention. In this case a button cell is employed for the battery 2, and for the light source 1 a light- emitting diode with integrated pre-resistor. The magnetic switch 3 is operated by a movable operating body (not shown) on the outside of the lamp's moulded main part and containing a magnet (not shown).
In contrast to known lamps which are made watertight solely by means of a tightly enclosing housing, the chances of the formation of corrosion are greatly reduced in the lamp according to the invention, since the moulding material fills all the cavities, thus preventing air, vapour or water from coming into contact with the electrical connection points. This feature, combined with the use of a sealed magnetic switch and a movable magnet arranged for external operation, provide a highly reliable lamp with long storage durability. Furthermore, the lamp provided is extremely robust with regard to influences
from external forces such as impacts and shocks, since the moulding material eliminates play and freedom of movement of the lamp's components.
It will be apparent to those skilled in the art that many modifications and variations are possible within the scope of the invention as it is defined by the following patent claims and by their equivalents.
Claims (6)
1. A lamp, comprising a light source (1), a battery (2) and a switch unit (3) which are electrically interconnected, characterized in that the switch unit is a magnetic switch (3) which by means of an electrically insulating moulding material (5) is moulded in the same unit as the light source (1) and the battery (2), and which is operated externally by a movable magnet (4).
2. A lamp as indicated in claim 1, characterized in that all electrical connections are located in a corrosion-free environment, since the moulding material (5) fills all the cavities between the components of the lamp.
3. A lamp as indicated in claim 2, characterized in that the movable magnet is attached to a ring which can be rotated round the lamp.
4. A lamp as indicated in claim 2, characterized in that the movable magnet is movably mounted on the outside of the lamp.
5. A lamp as indicated in claim 3 or 4, characterized in that all electrical connections are welded or soldered.
6. A lamp as indicated in claim 5, characterized in that it also comprises a reflector (6) and a lamp lens (7) moulded in the same unit as the light source, the battery and the switch unit.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20003188 | 2000-06-20 | ||
NO20003188A NO313253B1 (en) | 2000-06-20 | 2000-06-20 | Disposable Headlight |
PCT/NO2001/000260 WO2002010639A1 (en) | 2000-06-20 | 2001-06-20 | Lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2001284539A1 true AU2001284539A1 (en) | 2002-05-09 |
AU2001284539B2 AU2001284539B2 (en) | 2005-07-28 |
Family
ID=19911280
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001284539A Ceased AU2001284539B2 (en) | 2000-06-20 | 2001-06-20 | Lamp |
AU8453901A Withdrawn AU8453901A (en) | 2000-06-20 | 2001-06-20 | Lamp |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU8453901A Withdrawn AU8453901A (en) | 2000-06-20 | 2001-06-20 | Lamp |
Country Status (9)
Country | Link |
---|---|
US (1) | US6802621B2 (en) |
EP (1) | EP1292794A1 (en) |
JP (1) | JP2004505423A (en) |
KR (1) | KR20030025243A (en) |
CN (1) | CN1211601C (en) |
AU (2) | AU2001284539B2 (en) |
CA (1) | CA2413532A1 (en) |
NO (1) | NO313253B1 (en) |
WO (1) | WO2002010639A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004010047A1 (en) * | 2002-07-19 | 2004-01-29 | Skylight Ag | Pocket lamp |
US7256671B1 (en) | 2003-04-24 | 2007-08-14 | Brian Preaux | Portable light system having a sealed switch |
US8690379B2 (en) * | 2004-10-07 | 2014-04-08 | Robert L. Canella | Battery-powered lights and holder for same |
US7364319B2 (en) * | 2004-10-07 | 2008-04-29 | Canella Robert L | Battery-powered light |
US7311417B1 (en) * | 2005-02-22 | 2007-12-25 | Ocean Management Systems Inc. | Waterproof flashlight including electronic power switch actuated by a mechanical switch |
DE202005003128U1 (en) * | 2005-02-26 | 2005-05-04 | Zweibrüder Optoelectronics GmbH | Switching device on a lamp |
US7703937B2 (en) * | 2005-12-23 | 2010-04-27 | Shirey Carey O'brien | Hands free light emitting diode (LED) illumination device |
DE102006057456B4 (en) * | 2006-12-06 | 2014-10-16 | Zweibrüder Optoelectronics Gmbh & Co. Kg | Packaging or carrier for an electrical device |
US7748864B1 (en) | 2008-01-24 | 2010-07-06 | Phillip Lynn Woodell | Switching device |
CN102392960A (en) * | 2011-11-16 | 2012-03-28 | 毕振华 | Explosion-proof energy-saving lamp for coal mine roadways |
CN103174942B (en) * | 2011-12-23 | 2016-12-07 | 海洋王照明科技股份有限公司 | Portable lamp |
CN104110666B (en) * | 2013-04-22 | 2018-01-23 | 海洋王(东莞)照明科技有限公司 | Light fitting sealing structure and light fixture |
US10159539B2 (en) * | 2014-04-10 | 2018-12-25 | Mark Crawford | Battery-operated laser or light source for performing surgical procedures |
US9420661B2 (en) | 2014-08-06 | 2016-08-16 | Lake Lite, Inc. | Outdoor lighting fixture |
GB201517085D0 (en) * | 2015-09-28 | 2015-11-11 | Glowstone Ltd | Torch |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1067646A (en) * | 1912-04-12 | 1913-07-15 | Albert J Downey | Search-light for umbrella-handles. |
US1200366A (en) * | 1915-02-19 | 1916-10-03 | Nat Carbon Co | Battery-lamp. |
US1392163A (en) * | 1919-11-04 | 1921-09-27 | Hoffmann Oscar | Electric pocket-lamp |
US2197372A (en) * | 1938-09-26 | 1940-04-16 | Eugene H Bailey | Electric light in artificial lure or bait |
US2561532A (en) * | 1946-05-03 | 1951-07-24 | Muir Brockett | Flashlight |
US3162376A (en) * | 1962-11-05 | 1964-12-22 | Furuya Syoichi | Water-tight portable electric lamp for under-water use |
US3809882A (en) * | 1971-01-20 | 1974-05-07 | Unique Devices Eng & Consultin | Lighting device |
US3790912A (en) * | 1971-12-22 | 1974-02-05 | J Murphy | Flashlight and switch assembly |
US3898450A (en) * | 1973-11-01 | 1975-08-05 | Texas Instruments Inc | Reliable flashlight |
US4433364A (en) * | 1979-03-21 | 1984-02-21 | Noble Edward E | Lighted handgrip |
US4303970A (en) * | 1980-06-09 | 1981-12-01 | Robertson James H | Battery powered lamp |
GB2089015A (en) * | 1980-12-08 | 1982-06-16 | Tang Chuen | Improvements in waterproof light emitting devices |
GB2090956B (en) * | 1981-01-12 | 1985-05-01 | Medicharge Ltd | Signal light |
US4760504A (en) * | 1987-01-23 | 1988-07-26 | Rayovac Corporation | Magnetically activated flashlight |
US5490050A (en) * | 1994-05-02 | 1996-02-06 | Acr Electronics, Inc. | Emergency strobe light |
-
2000
- 2000-06-20 NO NO20003188A patent/NO313253B1/en unknown
-
2001
- 2001-06-20 AU AU2001284539A patent/AU2001284539B2/en not_active Ceased
- 2001-06-20 CN CNB01811329XA patent/CN1211601C/en not_active Expired - Fee Related
- 2001-06-20 EP EP01963607A patent/EP1292794A1/en not_active Withdrawn
- 2001-06-20 WO PCT/NO2001/000260 patent/WO2002010639A1/en active IP Right Grant
- 2001-06-20 JP JP2002516530A patent/JP2004505423A/en active Pending
- 2001-06-20 CA CA002413532A patent/CA2413532A1/en not_active Abandoned
- 2001-06-20 KR KR1020027016778A patent/KR20030025243A/en not_active Application Discontinuation
- 2001-06-20 US US10/297,392 patent/US6802621B2/en not_active Expired - Fee Related
- 2001-06-20 AU AU8453901A patent/AU8453901A/en not_active Withdrawn
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