Led lighting device
US-2016007420-A1 · Jan 7, 2016 · US
Led driving apparatus and driving method for continuously driving led
US2016270168A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016270168-A1 |
| Application number | US-201615160469-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 20, 2016 |
| Priority date | Oct 8, 2012 |
| Publication date | Sep 15, 2016 |
| Grant date | — |
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Abstract
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A light-emitting diode (LED) driving apparatus includes a rectifying module configured to rectify an alternating current voltage and output a first driving voltage, an LED light emitting module including a first LED group, and a second LED group to an n-th LED group, and configured to receive the first driving voltage from the rectifying module, n being a positive integer of two or more, an LED driving module configured to sequentially drive the first LED group to the n-th LED group according to a voltage level of the first driving voltage, and a second driving voltage providing module connected in parallel to at least one LED group of the second LED group to the n-th LED group.
First claim
Opening claim text (preview).
What is claimed is: 1 . A light-emitting diode (LED) driving apparatus, comprising: a rectifying module configured to rectify an alternating current voltage and output a first driving voltage; an LED light emitting module comprising a first LED group, and a second LED group to an n-th LED group, and configured to receive the first driving voltage from the rectifying module, n being a positive integer of two or more; an LED driving module configured to sequentially drive the first LED group to the n-th LED group according to a voltage level of the first driving voltage; and a second driving voltage providing module connected in parallel to at least one LED group of the second LED group to the n-th LED group, configured to be charged by the first driving voltage during an emitting interval of the at least one LED group, and configured to provide a second driving voltage to the at least one LED group during a non-emitting interval of the at least one LED group. 2 . The LED driving apparatus of claim 1 , wherein the second driving voltage providing module comprises a first capacitor connected in parallel to the at least one LED group. 3 . The LED driving apparatus of claim 2 , wherein the first capacitor is connected in parallel to the at least one LED group of the second LED group to the n-th LED group. 4 . The LED driving apparatus of claim 2 , wherein the first capacitor is connected in parallel to at least two LED groups of the second LED group to the n-th LED group. 5 . The LED driving apparatus of claim 2 , wherein the second driving voltage providing module further comprises a first countercurrent prevention diode configured to prevent a current discharged from the first capacitor from flowing backward into a front LED group of the at least one LED group. 6 . The LED driving apparatus of claim 1 , wherein the second driving voltage providing module comprises a plurality of capacitors that are each connected in parallel to the at least one LED group. 7 . The LED driving apparatus of claim 6 , wherein the second driving voltage providing module further comprises a plurality of countercurrent prevention diodes configured to prevent a current discharged from each of the plurality of corresponding capacitors from flowing backward into a front LED group of the at least one LED group. 8 . The LED driving apparatus of claim 6 , wherein at least one of the plurality of capacitors is connected in parallel to at least two LED groups. 9 . The LED driving apparatus of claim 6 , wherein: the second driving voltage providing module comprises a first capacitor to a (n−1)-th capacitor; and each of the first capacitor to the (n−1)-th capacitor is connected in parallel one to one to each of the second LED group to the n-th LED group.
Assignees
Inventors
Classifications
with an active control inside an LED matrix · CPC title
Electricity · mapped topic
Electricity · mapped topic
- H05B33/0812Primary
Electricity · mapped topic
- H05B45/395Primary
Linear regulators · CPC title
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Frequently asked questions
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- What does patent US2016270168A1 cover?
- A light-emitting diode (LED) driving apparatus includes a rectifying module configured to rectify an alternating current voltage and output a first driving voltage, an LED light emitting module including a first LED group, and a second LED group to an n-th LED group, and configured to receive the first driving voltage from the rectifying module, n being a positive integer of two or more, an LED…
- Who is the assignee on this patent?
- Seoul Semiconductor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H05B33/0812. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).