GB2230889A - Display lighting - Google Patents
Display lighting Download PDFInfo
- Publication number
- GB2230889A GB2230889A GB9002144A GB9002144A GB2230889A GB 2230889 A GB2230889 A GB 2230889A GB 9002144 A GB9002144 A GB 9002144A GB 9002144 A GB9002144 A GB 9002144A GB 2230889 A GB2230889 A GB 2230889A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flex
- display lighting
- light emitting
- emitting diodes
- display
- 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
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/28—Signs formed by filament-type lamp
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
-
- 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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/002—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2121/004—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 mounted on the exterior of houses or other buildings to illuminate parts thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2121/04—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 for Christmas trees
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Display lighting (2) comprising a length of electrically conductive flex (4), a plurality of low voltage light sources (6) electrically connected in parallel along the flex (4), and transformer means (8) which is connected to the flex (4) and which is for connecting to a mains outlet socket for reducing the mains current which passes along the flex (4) to the light sources (6) during operation of the display lighting (2). The voltage reduction may be to 12 volts or less. Also, the display lighting may be battery operated, and may be used to decorate a Christmas tree. <IMAGE>
Description
DISPLAY LIGHTING This invention relates to display lighting.
Display lighting of the type used to decorate christmas trees in homes is well known. This known display lighting comprises a length of electrically conductive flex to which filament lamps are electrically connected in series. All known display lighting of this type operates on mains voltage 240v requiring the flex leading from a mains socket to the first lamp to carry a full 240v reducing only in stages as the mains passes through each lamp. This means potentially lethal voltages may become available due to flex or lamp damage from mishandling by children. In addition, the known display lighting is often incorrectly fused with fuses of too high a rating, thereby creating a danger of the flex burning instead of the fuse blowing. Further, filament lamps run very hot and combustible material set in the close vicinity of a lamp may burn.There is thus a high risk of children electrocuting or burning themselves and/or fires starting.
The known lighting display apparatus is also unsatisfactory in that it is well known that series connected lamps are dependent upon all the lamps working. If one lamp fails, then all the other lamps fail, necessitating lengthy testing of each lamp to find the defective one.
It is an aim of the present invention to obviate or reduce the above mentioned problems.
Accordingly, this invention provides display lighting comprising a length of electrically conductive flex, a plurality of low voltage light sources electrically connected in parallel along the flex, and transformer means which is connected to the flex and which is for connecting to a mains outlet socket for reducing the mains current which passes along the flex to the light sources during operation of the display lighting.
The display lighting can be used for decoration such for example as for decorating a christmas tree or a window in a house. Alternatively, the display lighting can be used for the purpose of giving a message so that the display lighting may be used to advertise goods or prices in shop windows.
If the display lighting is to be used for the purpose of giving a message, then the light sources will usually be closer together than if the display lighting is to be used for decoration purposes.
Because the display lighting has the light sources electrically connected in parallel along the flex, defective light sources do not extinguish the other light sources. Other light sources will usually shine with substantially the same light intensity as if all the light sources were operating.
Because the display lighting utilises the transformer means, the voltage starts low at source, rather than being reduced by the number of lightbulbs employed in the above mentioned known display lighting. Thus the danger of electrocution or of a fire starting may be reduced to the minimum. This is important in homes where the display lighting may be left on with children playing in the vicinity and without adult supervision. The light sources used in the display lighting of the present invention will usually operate on milliamps, using low voltage and low current.The fact that the light sources use milliamps not only gives very good safety but also means that the lighting apparatus consumes a much smaller amount of current than the above mentioned known lighting apparatus so that the lighting apparatus of the present invention can be left on for long periods of time without persons having to worry unduly about the cost of electricity being consumed.
The display lighting of the present invention is very easy to produce. Large numbers of the light sources may be connected to the flex in complete safety and with the light sources giving a substantially constant amount of light. With small light sources, the display apparatus may glitter like tinsel.
Preferably, the light sources are light emitting diodes. Since the light emitting diodes are solid state devices, the display lighting can be produced to be robust in use. This is advantageous where children may be playing in the vicinity of the display lighting. Still further, the light emitting diodes do not get hot to touch, even after extended periods of use, so that children will not burn themselves as they may well do if they touch existing high voltage series-connected filament bulbs in the known display lighting.
Although light emitting diodes are preferred as the light sources, it is to be understood that other light sources may however be employed such for example as low voltage filament bulbs.
Preferably, the light emitting diodes are transparent light emitting diodes. These light emitting diodes will usually be transparent glass light emitting diodes. Such light emitting diodes give a glitter-like tinsel display when illuminated.
The light emitting diodes may be those known as high definition light emitting diodes.
The light emitting diodes may be of the same shape and size, or they may be of different shapes and sizes. Thus, for example, the light emitting diodes may be of a standard tubular shape, or they may have cone tops.
The light emitting diodes may emit a continuous light, or they may emit a flashing light.
The light emitting diodes may be such that they are only able to emit one colour. Advantageously, however the light emitting diodes are such that they can change colour. Such light emitting diodes may be two colour light emitting diodes or three colour light emitting diodes. These light emitting diodes may be intensity matched to give a substantially constant light intensity output.
When the light emitting diodes are able to change colour, the colours will usually be chosen from green, amber and red. Other colours may however be employed.
By changing colours, it is possible to get the display lighting to give the effect of movement or the effect of a ripple.
The display lighting may include a change-over switch means for changing the polarity at the light emitting diodes to cause them to change colour.
The change-over switch means may be a change-over switch for changing neutral to live and vice versa. Thus the simple throwing of the change-over switch means may be effective to change an ell-tire display.
Preferably, the display lighting is such that the electrically conductive flex is formed of tinned copper in a sheath of a transparent plastics material.
The use of such flex is advantageous in giving the above mentioned tinsel-like display.
The length of the flex may include connector means at one or both of its end :ior cormectirlg the length of the flex to other lengths of the flex. Thus, for example, the display lighting may be manufactured and sold with standard lengths of the flex so that, if desired, several standard lengths of the flex can be connected together. Thus, for example, five, ten or more of the lengths of the flex may be connected together.
depending upon the current output of the transducer means and upon the size of the individual lengths of the flex.
The connector means may be plug and socket connectors with a plug connector part at one end of the length of flex and/or a socket connector part at the other end of the length of flex. Other types of connector means may be employed.
The transformer means may be such that it is able to take a 240 volt a.c. mains supply, and give a 5 volt 240iiU a.c. or d.c. output. Various typres : transformer means may be employed so that a plug-in transformer may be employed which will give a 12 volt 130mA a.c. or d.c. output. The transformer means is able to safely operate 50 or more light emitting diodes.
It will thus be seen that the current output from the transformer is very small and this gives good overall safety as compared with for example a 240 volt 5 amp supply required by the filament bulbs in the known display lighting apparatus.
The display lighting may also be such that it is battery operable for use in the event that there should be a mains failure, or for use in the event where it is desired to run the display lighting on battery power and not on mains electricity.
The display lighting may advantageously be such that the battery or batteries employed are rechargeable batteries. The battery or batteries may thus be arranged to be automatically charged whilst the display lighting is connected to the mains and is operating on mains electricity. The batteries can then be arranged to operate if there should be a mains failure or it should be desired to use the display lighting in such a manner that it is not connected to the mains.
Switch means may be employed to switch the display lighting from a mains operated mode of use to a ba-ttery operated mode of use.
Am embodiment of the invention will now be described solely by way of example and with reference to the accompanying drawings in which:
Figure 1 shows display lighting ap-}aratus; Figure 2 shows in detail one light source and a piece of flex; and
Figure 3 and Figure 4 illustrates low the light source is fitted to the flex.
Referring to Figure 1, there is should display lighting 2 comprising two lengths of electrically conductive flex 4. A plurality of low voltage light sources in the form of light emitting diode 6 are provided along the flex as shown. The light emitting diodes 6 are connected in parallel.
The display lighting 2 also cornpri;es transformer means in the form of a transformer 8. The transformer 8 is a plug-in transformer having three pins 10 for plugging into a mains outlet socket (not shown).
The transformer 8 produces the mains current which passes along the flex 4 to the light emitting diodes 6 during operation of the display lighting 2.
Since the actual lighting display will usually be required to be at some distance from the mains outlet socket, the transformer 8 is provided with a length of flex 12 which is not provided with the light emitting diodes 6. There is no point in providing the flex 12 with the light emitting diodes when the flex 12 will usually be, for example, just passing along a floor from the mains outlet socket to the display point, for example a christmas tree or a window to be decorated or provided with a message.
The flex 4 is provided with connector means in the form of connectors 14 at each of its ends.
This enables the two lengths of flex 4 to be connected together. The free end of the flex 12 is also provided with connector means in the form of a connector 14.
Thus the free end of the flex 12 can be connected to one end of a length of the flex 4.
The transformer 8 operates to reduce the mains voltage at source so that the flex 4 and the flex 12 only carry a very low current. Thus the display lighting 2 can be used with a very high degree of safety and the risk of fires starting and children electrocuting themselves by gripping the flex 4 or the flex 12, or by holding the light emitting diodes 6 is negligible. Similarly, since the light emitting diodes 6 will not get hot, even after prolonged periods of use of the display lighting 2, children holding the light emitting diodes 6 cannot burn themselves. Still further, since the display lighting 2 only consumes a very low current, running costs are considerably reduced.
The display lighting 2 is able to give a very pleasing display soniething like tinsel. This is particularly the case if the flex 4 is formed of tinned copper in a sheath of a transparent/clear plastics material.
Figures 2, 3 and 4 show how one of the light emitting diodes 6 may be connected to the flex 4. As can be seen from Figure 2, the flex 4 is twin flex and the light emitting diode 6 is supported on a top part 16 of a clamp device 18. The clamp device 18 has a bottom part 20 and the two parts pivot together about a hinge portion 22. Terminal pins 24 from the light emitting diodes 6 project through the top part 16 so that they will penetrate the flex 4 when the clamp device 18 is closed. The clamp device 18 is retained in its closed position by clips 26 on the bottom part 20 locating in recesses 28 in the top part 16. The top part 16 and the bottom part 18 will usually be crimped together. Because the voltages employed in the flex 4 and the light emitting diodes are neglible, the clamp device 18 does not have to be especially waterproof or made electrically sound.The neglible voltages employed render the display lighting 2 extremely safe, both under conditions of nonnal use and under conditions of abuse as may occur when children might play with the display lighting 2.
It is to be appreciated that the embodiment of the invention described above with reference to the accompanying drawings has been given by way of example only and that modifications may be effected. Thus, for example more than two of the lengths of flex 4 may be employed. The flex 4 and the light emitting diodes 6 may be sold separately as a do-it-yourself kit for assembly at home. This is especially so with crimp/ clamp devices 18 of the type shown in Figures 2, 5 and 4.
The present invention also extends to display lighting comprising a length of the electrically conductive flex, and a plurality of low voltage light sources electrically connected in parallel along the flex, the display lighting being such that it is operable solely by one or more batteries.
Claims (14)
1. Display lighting comprising a length of electrically conductive flex, a plurality of low voltage light sources electrically connected in parallel along the flex, and transformer means which is connected to the flex and which is for connecting to a mains outlet socket for reducing the mains current which passes along the flex to the light sources during operation of the display lighting.
2. Display lighting according to claim 1 in which the light sources are a light emitting diodes.
3. Display apparatus according to claim 2 in which the light emitting diodes are such that they can change colour.
4. Display apparatus according to claim 3 in which the light emitting diodes are two colour light emitting diodes or three colour light emitting diodes.
5. Display apparatus according to claim 3 or claim 4 and including a change-over switch means for changing the polarity at the light emitting diodes to cause them to change colour.
6. Display lighting according to claim 5 in which the change-over switch means is a change-over switch for changing neutral to live and vice versa.
7. Display lighting according to any one of the preceding claims in which the electrically conductive flex is formed of tinned copper in a sheath of a transparent plastics material.
8. Display lighting according to any one of the preceding claims in which the length of the electrically conductive flex includes connector means at one or both of its ends for connecting the length of flex to other lengths of the flex.
9. Display lighting according to clairn 8 in which the connector means are plug and socket connectors with a plug connector part at one end of the length of electrically conductive flex and/or a socket connector part at the other end of the length of electrically conductive flex.
10. Display lighting according to any one of the preceding claims in which the transformer means is such that it is able to take a 240 volt a.c. mains supply, and give a 3 volt 240mA a.c. or d.c. output.
11. Display lighting according to any one of the preceding claims and which is battery operable for use in the event that there should be a mains failure, or for use in the event where it is desired to run the display lighting on battery power and not on mains electricity.
12. Display lighting according to claim 11 and including a battery or batteries which are rechargeable.
1). Display lighting according to claim 11 or claim 12 and including switch means for switching the display lighting from a mains operated mode of use to a battery operated mode of use.
14. Display lighting substantially as herein described with reference to the accompanying drawings.
15o Display lighting comprising a length of electrically conductive flex, and a plurality of low voltage light sources electrically connected in parallel along the flex, the display lighting being such that it is solely battery operated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB898902355A GB8902355D0 (en) | 1989-02-03 | 1989-02-03 | Display lighting |
| GB898914248A GB8914248D0 (en) | 1989-06-21 | 1989-06-21 | Display lighting |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9002144D0 GB9002144D0 (en) | 1990-03-28 |
| GB2230889A true GB2230889A (en) | 1990-10-31 |
| GB2230889B GB2230889B (en) | 1993-05-12 |
Family
ID=26294908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9002144A Expired - Fee Related GB2230889B (en) | 1989-02-03 | 1990-01-31 | Display lighting |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2230889B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2680032A1 (en) * | 1991-07-31 | 1993-02-05 | Guillot Electricite Sa | Luminous animation method |
| GB2314918A (en) * | 1996-05-03 | 1998-01-14 | Shining Blick Enterprises Co L | Decorative network of lights |
| GB2358459A (en) * | 2000-01-14 | 2001-07-25 | Matteis Cristina Isabella De | A lighting assembly which may represent the structure of a proein |
| GB2389975B (en) * | 2001-03-19 | 2005-08-24 | Integrated Power Components In | A repair device for fixing a malfunctioning shunt in a decoration light string |
| WO2006085097A1 (en) * | 2005-02-11 | 2006-08-17 | Steven Orton | Lighting units |
| AT501476B1 (en) * | 2005-03-17 | 2006-09-15 | Andres Fraenkel | FAIRY LIGHTS |
| EP1586810A3 (en) * | 2004-04-16 | 2006-11-22 | VLM S.p.A. | Modular lighting system including high-powered LED lighting modules |
| WO2007023261A2 (en) * | 2005-08-24 | 2007-03-01 | Morton Graham | A lamp |
| GB2444945A (en) * | 2006-12-20 | 2008-06-25 | Tarquin Andrew Stehle | Low voltage light emitting diode festive light array |
| CN100543366C (en) * | 2006-11-14 | 2009-09-23 | 鹤山健豪灯饰企业有限公司 | Decorative chain |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617732A (en) * | 1969-11-19 | 1971-11-02 | Royal P Fisher | Artificial tree with an electrical illuminating system |
| GB2172135A (en) * | 1985-03-08 | 1986-09-10 | Royston Francis Allen | Lighting system combined with an artificial tree |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3940521A (en) * | 1974-11-05 | 1976-02-24 | The Raymond Lee Organization, Inc. | Christmas tree ornament |
-
1990
- 1990-01-31 GB GB9002144A patent/GB2230889B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617732A (en) * | 1969-11-19 | 1971-11-02 | Royal P Fisher | Artificial tree with an electrical illuminating system |
| GB2172135A (en) * | 1985-03-08 | 1986-09-10 | Royston Francis Allen | Lighting system combined with an artificial tree |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2680032A1 (en) * | 1991-07-31 | 1993-02-05 | Guillot Electricite Sa | Luminous animation method |
| GB2314918A (en) * | 1996-05-03 | 1998-01-14 | Shining Blick Enterprises Co L | Decorative network of lights |
| GB2314918B (en) * | 1996-05-03 | 2000-09-06 | Shining Blick Enterprises Co L | Network type light set structure |
| GB2358459A (en) * | 2000-01-14 | 2001-07-25 | Matteis Cristina Isabella De | A lighting assembly which may represent the structure of a proein |
| GB2358459B (en) * | 2000-01-14 | 2004-02-04 | Matteis Cristina Isabella De | A lighting assembly |
| GB2389975B (en) * | 2001-03-19 | 2005-08-24 | Integrated Power Components In | A repair device for fixing a malfunctioning shunt in a decoration light string |
| EP1586810A3 (en) * | 2004-04-16 | 2006-11-22 | VLM S.p.A. | Modular lighting system including high-powered LED lighting modules |
| WO2006085097A1 (en) * | 2005-02-11 | 2006-08-17 | Steven Orton | Lighting units |
| AT501476B1 (en) * | 2005-03-17 | 2006-09-15 | Andres Fraenkel | FAIRY LIGHTS |
| EP1703197A2 (en) | 2005-03-17 | 2006-09-20 | Fränkel, Andrés | Light string |
| WO2007023261A2 (en) * | 2005-08-24 | 2007-03-01 | Morton Graham | A lamp |
| WO2007023261A3 (en) * | 2005-08-24 | 2007-05-10 | Morton Graham | A lamp |
| CN100543366C (en) * | 2006-11-14 | 2009-09-23 | 鹤山健豪灯饰企业有限公司 | Decorative chain |
| GB2444945A (en) * | 2006-12-20 | 2008-06-25 | Tarquin Andrew Stehle | Low voltage light emitting diode festive light array |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2230889B (en) | 1993-05-12 |
| GB9002144D0 (en) | 1990-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |