Light source module, light source module driving circuit and driving method
US-9204515-B2 · Dec 1, 2015 · US
Lighting device, illumination device, illumination apparatus and illumination system
US9113530B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9113530-B2 |
| Application number | US-201414500112-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 29, 2014 |
| Priority date | Oct 1, 2013 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
Official abstract text for this publication.
A lighting device includes an AC to DC conversion unit for receiving a setting signal and converting it into a DC voltage having a predetermined voltage, voltage conversion units for converting the DC voltage inputted from the AC to DC conversion unit and driving the light source modules according to drive signals, a PWM signal generating unit for generating a PWM signal having a duty ratio corresponding to the setting signal, and a control unit, by outputting the drive signals to the voltage conversion units based on a command value determined according to the duty ratio, for controlling output powers of the voltage conversion units such that a characteristic curve of the sum of the output powers of the voltage conversion units has the maximum or at least one inflection point within an adjustment range of the conduction angle.
First claim
Opening claim text (preview).
The invention claimed is: 1. A lighting device for lighting a plurality of light source modules based on a conduction angle of a setting signal inputted from a setting unit, the setting unit outputting the setting signal generated by adjusting the conduction angle of an AC voltage inputted from an AC power source, each of the light source modules including solid-state light emitting elements, the lighting device comprising: an AC to DC conversion unit configured to receive the set…
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
- H05B33/0851Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9113530B2 cover?
- A lighting device includes an AC to DC conversion unit for receiving a setting signal and converting it into a DC voltage having a predetermined voltage, voltage conversion units for converting the DC voltage inputted from the AC to DC conversion unit and driving the light source modules according to drive signals, a PWM signal generating unit for generating a PWM signal having a duty ratio cor…
- Who is the assignee on this patent?
- Panasonic Corp, Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H05B33/0851. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).