CA2633054C - Decorative light string device - Google Patents
Decorative light string device Download PDFInfo
- Publication number
- CA2633054C CA2633054C CA2633054A CA2633054A CA2633054C CA 2633054 C CA2633054 C CA 2633054C CA 2633054 A CA2633054 A CA 2633054A CA 2633054 A CA2633054 A CA 2633054A CA 2633054 C CA2633054 C CA 2633054C
- Authority
- CA
- Canada
- Prior art keywords
- led
- coupled
- diode
- string
- power
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 238000010586 diagram Methods 0.000 description 3
- 241000283907 Tragelaphus oryx Species 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- 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
- F21V21/005—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
-
- 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
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
- F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
-
- 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)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention discloses a decorative light string device, which comprises: a power plug receiving AC power, a tail socket coupled to the power plug, and a LED string with one end thereof coupled to the power plug and the other end thereof coupled to the tail socket, wherein each of the power plug and tail socket has a diode and a capacitor coupled to the diode, whereby a DC voltage, which is twice the peak voltage of the AC power, is output to the LED string.
Description
DECORATIVE LIGHT STRING DEVICE
BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to a decorative light string device, particularly to a decorative light string device having a voltage-doubling design.
Description of the Related Art LED (Light Emitting Diode) emits light when electrons and holes recombine in a semiconductor material, wherein electrons drop to a lower energy level with light energy released. LEDs with different forbidden bands provide different colors of light. Currently, LEDs have been able to provide lights of a full color spectrum. Compared with the traditional lamp bulbs, LED has the advantages of luminescence, small size, fast response, drop proof, and high power efficiency. Therefore, LED has been extensively used in many products.
For example, LED has been widely used in decorative light strings.
Refer to Fig.1 for a conventional decorative light string device 10, which comprises: a power plug 12, a tail socket 14 coupled to the power plug 12, and a power converter 16 coupled to the power plug 12 and a LED string 18.
The power converter 16 converts AC (Alternating Current) power into DC
(Direct Current) power, and the DC power is supplied to the LED string 18.
When the original voltage is maintained, increasing the LED number of the LED string will decrease LED brightness. Only via raising voltage can the LED number of the LED string be increased without decreasing LED
brightness. However, raising voltage increases power consumption and electric expense.
Accordingly, the present invention proposes a novel decorative light string device to solve the abovementioned problems.
SUMMARY OF THE INVENTION
The present invention provides a decorative light string device, wherein the number of LEDs in the LED string is increased with brightness maintained without increasing the input voltage via a voltage-doubling circuit design, whereby the cost of the decorative light string device is reduced.
The present invention proposes a decorative light string device, which comprises: a power plug receiving AC power, a tail socket coupled to the power plug, and a LED string with one end coupled to the power plug and
BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to a decorative light string device, particularly to a decorative light string device having a voltage-doubling design.
Description of the Related Art LED (Light Emitting Diode) emits light when electrons and holes recombine in a semiconductor material, wherein electrons drop to a lower energy level with light energy released. LEDs with different forbidden bands provide different colors of light. Currently, LEDs have been able to provide lights of a full color spectrum. Compared with the traditional lamp bulbs, LED has the advantages of luminescence, small size, fast response, drop proof, and high power efficiency. Therefore, LED has been extensively used in many products.
For example, LED has been widely used in decorative light strings.
Refer to Fig.1 for a conventional decorative light string device 10, which comprises: a power plug 12, a tail socket 14 coupled to the power plug 12, and a power converter 16 coupled to the power plug 12 and a LED string 18.
The power converter 16 converts AC (Alternating Current) power into DC
(Direct Current) power, and the DC power is supplied to the LED string 18.
When the original voltage is maintained, increasing the LED number of the LED string will decrease LED brightness. Only via raising voltage can the LED number of the LED string be increased without decreasing LED
brightness. However, raising voltage increases power consumption and electric expense.
Accordingly, the present invention proposes a novel decorative light string device to solve the abovementioned problems.
SUMMARY OF THE INVENTION
The present invention provides a decorative light string device, wherein the number of LEDs in the LED string is increased with brightness maintained without increasing the input voltage via a voltage-doubling circuit design, whereby the cost of the decorative light string device is reduced.
The present invention proposes a decorative light string device, which comprises: a power plug receiving AC power, a tail socket coupled to the power plug, and a LED string with one end coupled to the power plug and
2 the other end coupled to the tail socket, wherein the power plug has a first diode and a first capacitor coupled to the first diode, and the tail socket has a second diode and a second capacitor coupled to the second diode, whereby a DC voltage , which is twice the peak voltage of the AC power, is output to the LED string.
According to an aspect of the invention, there is provided a decorative light string device, comprising: a power plug receiving alternating current (AC) power, a tail socket coupled to said power plug, and a light emitting diode (LED) string with one end thereof coupled to said power plug and another end thereof coupled to said tail socket, characterized in that said power plug has a first diode and a first charging capacitor coupled to said first diode to define a first charging polarity thereacross, and said tail socket has a second diode and a second charging capacitor coupled to said second diode to define a second charging polarity opposite said first charging polarity thereacross, each of said first and second diodes having an anode terminal and a cathode terminal, one of said first and second charging capacitors being coupled to said LED strings and the cathode terminal of said diode corresponding thereto, and the other of said first and second charging capacitors being conversely coupled to said LED string and the anode terminal of said diode corresponding thereto, whereby a direct current (DC) voltage, substantially twice a peak voltage of said AC power voltage, is output to said LED string; and wherein said first charging capacitor, said first diode, said second charging capacitor, and said second diode are
According to an aspect of the invention, there is provided a decorative light string device, comprising: a power plug receiving alternating current (AC) power, a tail socket coupled to said power plug, and a light emitting diode (LED) string with one end thereof coupled to said power plug and another end thereof coupled to said tail socket, characterized in that said power plug has a first diode and a first charging capacitor coupled to said first diode to define a first charging polarity thereacross, and said tail socket has a second diode and a second charging capacitor coupled to said second diode to define a second charging polarity opposite said first charging polarity thereacross, each of said first and second diodes having an anode terminal and a cathode terminal, one of said first and second charging capacitors being coupled to said LED strings and the cathode terminal of said diode corresponding thereto, and the other of said first and second charging capacitors being conversely coupled to said LED string and the anode terminal of said diode corresponding thereto, whereby a direct current (DC) voltage, substantially twice a peak voltage of said AC power voltage, is output to said LED string; and wherein said first charging capacitor, said first diode, said second charging capacitor, and said second diode are
3 directly coupled to said LED string.
This will become obvious to those of ordinary skill in the art after reading the following detailed description of preferred embodiments.
It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed BRIEF DESCRIPTION OF THE DRAWINGS
Fig.1 is a diagram schematically showing the structure of a conventional decorative light string device;
Fig.2 is a perspective view schematically showing a decorative light string device according to the present invention; and Fig.3 is a diagram schematically showing the circuit of a decorative light string device according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Refer to Fig.2 a perspective view schematically showing the appearance of a decorative light string device according to the present invention. The decorative light string device 20 of the present invention comprises: a power plug 22 having a pair of conductive insert plates 23, a tail socket 24 coupled
This will become obvious to those of ordinary skill in the art after reading the following detailed description of preferred embodiments.
It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed BRIEF DESCRIPTION OF THE DRAWINGS
Fig.1 is a diagram schematically showing the structure of a conventional decorative light string device;
Fig.2 is a perspective view schematically showing a decorative light string device according to the present invention; and Fig.3 is a diagram schematically showing the circuit of a decorative light string device according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Refer to Fig.2 a perspective view schematically showing the appearance of a decorative light string device according to the present invention. The decorative light string device 20 of the present invention comprises: a power plug 22 having a pair of conductive insert plates 23, a tail socket 24 coupled
4 to the power plug 22, and a LED string 26 having a plurality of LEDs 26a with one end thereof coupled to the power plug 22 and the other end thereof coupled to the tail socket 24. The tail socket 24 may be further connected with another plug. The LED 26a is a white-light LED, a red-light LED, a blue-light LED, a green-light LED, a yellow-light LED, or a LED with another color.
Refer to Fig.3 a diagram schematically showing the circuit of a decorative light string device according to the present invention. The power plug 22 has a diode 221 functioning as a rectifier and a capacitor Cl coupled to the diode 221. The tail socket 24 has a diode 241 functioning as a rectifier and a capacitor C2 coupled to the diode 241, wherein the capacitors eland C2 have identical capacitances and are used to store electric charges and filter. The power plug 22 receives AC power via the conductive insert plates 23; the diode 221 rectifies the AC current to charge the capacitor Cl to output a DC voltage, which is twice the peak voltage of the AC power to the LED string 26. Similarly, the tail socket 24 receives AC power from the, power plug 22; the diode 241 rectifies the AC current to charge the capacitor C2 to output a DC voltage , which is twice the peak voltage of the AC power to the LED string 26. Thus, the LED number of the LED string 26 can be doubled.
In conclusion, the present invention respectively installs the voltage-doubling circuits consisting of a diode and a capacitor in the power plug and the tail socket to provide a DC voltage which is twice the voltage of the AC power for the LED string, whereby LED brightness is enhanced or
Refer to Fig.3 a diagram schematically showing the circuit of a decorative light string device according to the present invention. The power plug 22 has a diode 221 functioning as a rectifier and a capacitor Cl coupled to the diode 221. The tail socket 24 has a diode 241 functioning as a rectifier and a capacitor C2 coupled to the diode 241, wherein the capacitors eland C2 have identical capacitances and are used to store electric charges and filter. The power plug 22 receives AC power via the conductive insert plates 23; the diode 221 rectifies the AC current to charge the capacitor Cl to output a DC voltage, which is twice the peak voltage of the AC power to the LED string 26. Similarly, the tail socket 24 receives AC power from the, power plug 22; the diode 241 rectifies the AC current to charge the capacitor C2 to output a DC voltage , which is twice the peak voltage of the AC power to the LED string 26. Thus, the LED number of the LED string 26 can be doubled.
In conclusion, the present invention respectively installs the voltage-doubling circuits consisting of a diode and a capacitor in the power plug and the tail socket to provide a DC voltage which is twice the voltage of the AC power for the LED string, whereby LED brightness is enhanced or
5 the LED number is increased without increasing the input voltage or raising the cost.
6
Claims (4)
1. A decorative light string device, comprising:
a power plug receiving alternating current (AC) power, a tail socket coupled to said power plug, and a light emitting diode (LED) string with one end thereof coupled to said power plug and another end thereof coupled to said tail socket, characterized in that said power plug has a first diode and a first charging capacitor coupled to said first diode to define a first charging polarity thereacross, and said tail socket has a second diode and a second charging capacitor coupled to said second diode to define a second charging polarity opposite said first charging polarity thereacross, each of said first and second diodes having an anode terminal and a cathode terminal, one of said first and second charging capacitors being coupled to said LED strings and the cathode terminal of said diode corresponding thereto, and the other of said first and second charging capacitors being conversely coupled to said LED string and the anode terminal of said diode corresponding thereto, whereby a direct current (DC) voltage, substantially twice a peak voltage of said AC power voltage, is output to said LED string; and wherein said first charging capacitor, said first diode, said second charging capacitor, and said second diode are directly coupled to said LED
string .
a power plug receiving alternating current (AC) power, a tail socket coupled to said power plug, and a light emitting diode (LED) string with one end thereof coupled to said power plug and another end thereof coupled to said tail socket, characterized in that said power plug has a first diode and a first charging capacitor coupled to said first diode to define a first charging polarity thereacross, and said tail socket has a second diode and a second charging capacitor coupled to said second diode to define a second charging polarity opposite said first charging polarity thereacross, each of said first and second diodes having an anode terminal and a cathode terminal, one of said first and second charging capacitors being coupled to said LED strings and the cathode terminal of said diode corresponding thereto, and the other of said first and second charging capacitors being conversely coupled to said LED string and the anode terminal of said diode corresponding thereto, whereby a direct current (DC) voltage, substantially twice a peak voltage of said AC power voltage, is output to said LED string; and wherein said first charging capacitor, said first diode, said second charging capacitor, and said second diode are directly coupled to said LED
string .
2. The decorative light string device according to claim 1, wherein said LED string has a plurality of LEDs and each said LED is a white-light LED, a red-light LED, a blue-light LED, a green-light LED, a yellow-light LED, or an LED of another color.
3. The decorative light string device according to claim 1, wherein said tail socket is coupled to receive the AC power.
4. The decorative light string device according to claim 1, wherein said first charging capacitor is coupled to the cathode terminal of said first diode, and said second charging capacitor is coupled to the anode terminal of said second diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2633054A CA2633054C (en) | 2008-05-15 | 2008-05-15 | Decorative light string device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2633054A CA2633054C (en) | 2008-05-15 | 2008-05-15 | Decorative light string device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2633054A1 CA2633054A1 (en) | 2009-11-15 |
| CA2633054C true CA2633054C (en) | 2014-10-07 |
Family
ID=41338177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2633054A Active CA2633054C (en) | 2008-05-15 | 2008-05-15 | Decorative light string device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2633054C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5841802B2 (en) * | 2011-10-24 | 2016-01-13 | パナソニックＩｐマネジメント株式会社 | lighting equipment |
-
2008
- 2008-05-15 CA CA2633054A patent/CA2633054C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2633054A1 (en) | 2009-11-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |