LIGHT EMITTING DIODE SYSTEM

• US 20160157311A1
• Filed: 02/08/2016
• Published: 06/02/2016
• Est. Priority Date: 02/26/2014
• Status: Active Grant

• Current Assignee: Semisilicon Technology Corp.
• Original Assignee: Semisilicon Technology Corp.
• Inventors: PENG, Wen-Chi
• Granted Patent: US 9,497,809 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/32 Pulse-control circuits
• CPC Class Codes: H05B 45/40 Details of LED load circuits

Abstract

A light emitting diode system includes a first light emitting diode apparatus and a second light emitting diode apparatus. The first light emitting diode apparatus includes an alternating-current-to-direct-current and light-controlling unit, a plurality of first light emitting diode modules and a first connector. The second light emitting diode apparatus includes a second connector, a signal-converting unit and a plurality of second light emitting diode modules. The first light emitting diode apparatus outputs a drive direct current power and a light-controlling signal to the signal-converting unit through the first connector and the second connector. Therefore, the signal-converting unit is configured to control colors and intensities of the second light emitting diode modules.

Claims

1. A light emitting diode system applied to an alternating current power supply apparatus, the light emitting diode system comprising:

a first light emitting diode apparatus; and

a second light emitting diode apparatus electrically connected to the first light emitting diode apparatus,

wherein the first light emitting diode apparatus comprises;

an alternating-current-to-direct-current and light-controlling unit electrically connected to the alternating current power supply apparatus;

a plurality of first light emitting diode modules electrically connected to each other in series, a first of the first light emitting diode modules electrically connected to the alternating-current-to-direct-current and light-controlling unit, a last of the first light emitting diode modules electrically connected to the alternating-current-to-direct-current and light-controlling unit; and

a first connector electrically connected to the alternating-current-to-direct-current and light-controlling unit and the last of the first light emitting diode modules,

wherein the second light emitting diode apparatus comprises;

a second connector electrically connected to the first connector;

a signal-converting unit electrically connected to the second connector; and

a plurality of second light emitting diode modules electrically connected to each other in series, a first of the second light emitting diode modules electrically connected to the signal-converting unit, a last of the second light emitting diode modules electrically connected to the signal-converting unit,

wherein the alternating current power supply apparatus outputs an alternating current power to the alternating-current-to-direct-current and light-controlling unit;

the alternating-current-to-direct-current and light-controlling unit converts the alternating current power into a drive direct current power;

the alternating-current-to-direct-current and light-controlling unit outputs the drive direct current power and a light-controlling signal to the first of the first light emitting diode modules;

then the drive direct current power and the light-controlling signal are transmitted to the other first light emitting diode modules to control colors and intensities of the first light emitting diode modules;

wherein the alternating-current-to-direct-current and light-controlling unit outputs the drive direct current power to the signal-converting unit through the first connector and the second connector;

the last of the first light emitting diode modules outputs the light-controlling signal to the signal-converting unit through the first connector and the second connector;

the signal-converting unit outputs the drive direct current power and a regenerated light-controlling signal regenerated from the light-controlling signal to the first of the second light emitting diode modules after the signal-converting unit processes the drive direct current power and the light-controlling signal;

then the drive direct current power and the regenerated light-controlling signal are transmitted to the other second light emitting diode modules to control colors and intensities of the second light emitting diode modules;

wherein the signal-converting unit comprises;

a first switch subunit electrically connected to the second connector; and

a second switch subunit electrically connected to the second connector, the first switch subunit and the first of the second light emitting diode modules,

wherein the first switch subunit receives the light-controlling signal to drive the first switch subunit, so that the first switch subunit is turned-on and turned off to generate a copied light-controlling signal, and then the copied light-controlling signal is sent to the second switch subunit to drive the second switch subunit, so that according to the drive direct current power, the second switch subunit regenerates the light-controlling signal to obtain the regenerated light-controlling signal to send the regenerated light-controlling signal to the first of the second light emitting diode modules.

2. The light emitting diode system in claim 1, wherein the second light emitting diode apparatus further comprises:

a third connector electrically connected to the signal-converting unit, the second connector and the last of the second light emitting diode modules,

wherein the alternating-current-to-direct-current and light-controlling unit outputs the drive direct current power to the third connector through the first connector and the second connector.

3. The light emitting diode system in claim 2, wherein the first light emitting diode apparatus further comprises:

an alternating current power connector electrically connected to the alternating current power supply apparatus and the alternating-current-to-direct-current and light-controlling unit.

4. The light emitting diode system in claim 3, wherein the alternating-current-to-direct-current and light-controlling unit comprises a positive voltage contact, a data output contact, a negative voltage contact and a direct current power supply contact;

the positive voltage contact outputs the drive direct current power;

the data output contact outputs the light-controlling signal;

the direct current power supply contact outputs the drive direct current power.

5. The light emitting diode system in claim 4, wherein the first light emitting diode module comprises a first positive voltage contact, a first data input contact, a first negative voltage contact and a first data output contact;

wherein the first positive voltage contact of the first of the first light emitting diode modules is electrically connected to the positive voltage contact;

the first positive voltage contacts of the other first light emitting diode modules are electrically connected to the first negative voltage contacts of a previous of the first light emitting diode modules;

the first positive voltage contact outputs the drive direct current power;

wherein the first data input contact of the first of the first light emitting diode modules is electrically connected to the data output contact;

the first data input contacts of the other first light emitting diode modules are electrically connected to the first data output contacts of the previous of the first light emitting diode modules;

the first data input contact is used for inputting the light-controlling signal;

wherein the first negative voltage contact of the last of the first light emitting diode modules is electrically connected to the negative voltage contact and the first connector;

the first negative voltage contacts of the other first light emitting diode modules are electrically connected to the first positive voltage contacts of a next of the first light emitting diode modules;

wherein the first data output contact of the last of the first light emitting diode modules is electrically connected to the first connector;

the first data output contacts of the other first light emitting diode modules are electrically connected to the first data input contacts of the next of the first light emitting diode modules;

the first data output contact outputs the light-controlling signal.

6. The light emitting diode system in claim 5, wherein the first connector comprises:

a first connector direct current power input contact electrically connected to the direct current power supply contact, the first connector direct current power input contact used for inputting the drive direct current power;

a first connector negative voltage input contact electrically connected to the negative voltage contact and the first negative voltage contact of the last of the first light emitting diode modules;

a first connector data input contact electrically connected to the first data output contact of the last of the first light emitting diode modules, the first connector data input contact used for inputting the light-controlling signal;

a first connector direct current power output contact electrically connected to the first connector direct current power input contact, the first connector direct current power output contact outputting the drive direct current power;

a first connector negative voltage output contact electrically connected to the first connector negative voltage input contact; and

a first connector data output contact electrically connected to the first connector data input contact, the first connector data output contact outputting the light-controlling signal.

7. The light emitting diode system in claim 6, wherein the second connector comprises:

a second connector direct current power input contact electrically connected to the first connector direct current power output contact, the second connector direct current power input contact used for inputting the drive direct current power;

a second connector negative voltage input contact electrically connected to the first connector negative voltage output contact;

a second connector data input contact electrically connected to the first connector data output contact, the second connector data input contact used for inputting the light-controlling signal;

a second connector direct current power output contact electrically connected to the second connector direct current power input contact, the second connector direct current power output contact outputting the drive direct current power;

a second connector negative voltage output contact electrically connected to the second connector negative voltage input contact; and

a second connector data output contact electrically connected to the second connector data input contact, the second connector data output contact outputting the light-controlling signal.

8. The light emitting diode system in claim 7, wherein the signal-converting unit comprises:

a control side direct current power input contact electrically connected to the second connector direct current power output contact, the control side direct current power input contact used for inputting the drive direct current power;

a control side negative voltage input contact electrically connected to the second connector negative voltage output contact;

a control side data input contact electrically connected to the second connector data output contact, the control side data input contact used for inputting the light-controlling signal;

a control side direct current power output contact electrically connected to the first of the second light emitting diode modules, the control side direct current power output contact outputting the drive direct current power;

a control side negative voltage output contact electrically connected to the control side negative voltage input contact; and

a control side data output contact electrically connected to the first of the second light emitting diode modules, the control side data output contact outputting the regenerated light-controlling signal.

9. The light emitting diode system in claim 8, wherein the second light emitting diode module comprises a second positive voltage contact, a second data input contact, a second negative voltage contact and a second data output contact;

wherein the second positive voltage contact of the first of the second light emitting diode modules is electrically connected to the control side direct current power output contact;

the second positive voltage contacts of the other second light emitting diode modules are electrically connected to the second negative voltage contacts of a previous of the second light emitting diode modules;

the second positive voltage contact is used for inputting the drive direct current power;

wherein the second data input contact of the first of the second light emitting diode modules is electrically connected to the control side data output contact;

the second data input contacts of the other second light emitting diode modules are electrically connected to the second data output contacts of the previous of the second light emitting diode modules;

the second data input contact is used for inputting the regenerated light-controlling signal;

wherein the second negative voltage contact of the last of the second light emitting diode modules is electrically connected to the control side negative voltage output contact and the third connector;

the second negative voltage contacts of the other second light emitting diode modules are electrically connected to the second positive voltage contact of a next of the second light emitting diode modules;

wherein the second data output contact of the last of the second light emitting diode modules is electrically connected to the third connector;

the second data output contacts of the other second light emitting diode modules are electrically connected to the second data input contact of the next of the second light emitting diode modules;

the second data output contact outputs the regenerated light-controlling signal.

10. The light emitting diode system in claim 9, wherein the third connector comprises:

a third connector direct current power input contact electrically connected to the second connector direct current power output contact and the control side direct current power input contact, the third connector direct current power input contact used for inputting the drive direct current power;

a third connector negative voltage input contact electrically connected to the control side negative voltage output contact and the second negative voltage contact of the last of the second light emitting diode modules;

a third connector data input contact electrically connected to the second data output contact of the last of the second light emitting diode modules, the third connector data input contact used for inputting the regenerated light-controlling signal.

a third connector direct current power output contact electrically connected to the third connector direct current power input contact, the third connector direct current power output contact outputting the drive direct current power;

a third connector negative voltage output contact electrically connected to the third connector negative voltage input contact; and

a third connector data output contact electrically connected to the third connector data input contact, the third connector data output contact outputting the regenerated light-controlling signal.

11. The light emitting diode system in claim 1, wherein the signal-converting unit further comprises:

a first resistor electrically connected to the second connector and the second switch subunit; and

a second resistor electrically connected to the first resistor, the second switch subunit and the first switch subunit.

12. The light emitting diode system in claim 11, wherein the signal-converting unit further comprises:

a third resistor electrically connected to the second connector and the first switch subunit;

a fourth resistor electrically connected to the second connector;

a first inductor electrically connected to the fourth resistor, the first resistor and the second switch subunit;

a first zener diode electrically connected to the first inductor, the first resistor, the second switch subunit and the first of the second light emitting diode modules; and

a first capacitor electrically connected to the first inductor, the first resistor, the second switch subunit, the first zener diode and the first of the second light emitting diode modules,

wherein the drive direct current power utilizes the first resistor and the second resistor to form pulse wave signals at the gate of the second switch subunit, and then according to a plurality sets of the pulse wave signals, a copied light-controlling signal is generated to drive the second switch subunit;

once the second switch subunit is driven, the light-controlling signal is regenerated to obtain the regenerated light-controlling signal.

13. The light emitting diode system in claim 11, wherein the signal-converting unit further comprises:

a first zener diode electrically connected to the first resistor, the second switch subunit and the first of the second light emitting diode modules;

a first capacitor electrically connected to the first resistor, the second switch subunit, the first zener diode and the first of the second light emitting diode modules; and

a first diode electrically connected to the first resistor, the second switch subunit, the first zener diode, the second connector, the first capacitor and the second resistor.

14. The light emitting diode system in claim 13, wherein the first switch subunit is a photo-coupler;

a transmitting side of the photo-coupler receives the light-controlling signal;

a receiving side of the photo-coupler is connected to the second resistor;

the second switch subunit 11416 is a BJT.

15. The light emitting diode system in claim 14, wherein the first switch subunit is an N-channel MOSFET, and the second switch subunit is a P-channel MOSFET.

16. The light emitting diode system in claim 14, wherein the first switch subunit is a P-channel MOSFET, and the second switch subunit is an N-channel MOSFET.