CN2317524Y - Light-emitting diode display panel - Google Patents
Light-emitting diode display panel Download PDFInfo
- Publication number
- CN2317524Y CN2317524Y CN 97247577 CN97247577U CN2317524Y CN 2317524 Y CN2317524 Y CN 2317524Y CN 97247577 CN97247577 CN 97247577 CN 97247577 U CN97247577 U CN 97247577U CN 2317524 Y CN2317524 Y CN 2317524Y
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- China
- Prior art keywords
- emitting diode
- light
- display panel
- diode display
- filter capacitor
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a light-emitting diode display panel which is composed of an insulating casing body, a light transmission indicating plate and an internal circuit. The internal circuit can be mainly composed of a wave filtering capacitance and a light-emitting diode group, and the connection relationship is that a power supply line can be connected with the input end of a bridge rectifier circuit whose output end can be respectively connected with the positive and negative ends of the wave filtering capacitance, and the wave filtering capacitance and the light-emitting diode group can be connected in parallel. The product of the utility model has the advantages of full wave continuous operation, no stroboflash phenomenon, stable brightness, high electric energy utilization rate, long component life, etc.
Description
The utility model relates to a kind of label of luminous demonstration, especially uses the display board of light emitting diode as light-emitting component.
Light-emitting diode display panel has advantages such as economize on electricity, combined and instant, therefore is widely used as cue mark.Existing light-emitting diode display panel is made up of plastic casing, indicator board and internal circuit usually.Than the utility model patent instructions of the advanced visible Decree of Patent Office of China mandate of internal circuit configuration, as depicted in figs. 1 and 2.These two kinds of circuit all adopt half-wave rectification.The characteristics of Fig. 1 are capacitor C 1 positive half cycle chargings, make light emitting diode Dn work; Negative half period is through resistance R 1 discharge, and light emitting diode Dn does not work.The characteristics of Fig. 2 are that positive and negative two groups among the positive-negative half-cycle light emitting diode Dn are worked respectively.The weak point that this class light-emitting diode display panel exists is the light emitting diode stroboscopic operation, poor visual effect, and component life is short, and utilization rate of electrical is low.
The purpose of utility model is: at the weak point of above-mentioned existing light-emitting diode display panel, propose a kind of do not have stroboscopic phenomenon, the higher light-emitting diode display panel of utilization rate of electrical.
Technical solution of the present utility model is: light-emitting diode display panel, form by insulation shell, printing opacity indicator board and internal circuit, described internal circuit mainly is made of bridge rectifier circuit, filter capacitor, light-emitting diode group, its connecting relation is: power lead connects the bridge rectifier circuit input end, the bridge rectifier circuit output terminal connects the filter capacitor positive and negative terminal respectively, and filter capacitor is in parallel with light-emitting diode group.
Because internal circuit adopted bridge rectifier and filtering measures, the electric current by light emitting diode is a waveform direct current ripple comparatively stably, so light emitting diode can the all-wave continuous working, does not only have stroboscopic phenomenon, and brightness stability.Simultaneously, the utility model also has advantages such as utilization rate of electrical height, component life length.
Below in conjunction with accompanying drawing technical solution of the present utility model is described further.
Fig. 3-Fig. 6 is respectively the internal circuit diagram of four embodiment of the utility model.
Light-emitting diode display panel shown in Figure 3 can be used for doorplate, street board, shopping direction board, buildings warning sign or the like, the bridge rectifier circuit that its internal circuit mainly is made up of D1-D4, filter capacitor C2, light-emitting diode group Dn constitute, its connecting relation is: power lead connects the bridge rectifier circuit input end, the bridge rectifier circuit output terminal connects filter capacitor C2 positive and negative terminal respectively, and filter capacitor is in parallel with light-emitting diode group Dn.Light-emitting diode group Dn can be arranged in various pattern and characters as required.After the energising, through bridge rectifier and filtering, the electric current of delivering to light emitting diode is direct current ripple comparatively stably, so light emitting diode can the all-wave continuous working, does not only have stroboscopic phenomenon, and brightness stability.
Fig. 4 circuit and the difference of Fig. 3 be filter capacitor other also in parallel voltage stabilizing diode D5.The brightness that so both can keep light emitting diode when mains fluctuations can play protection filter capacitor C2 and light-emitting diode group Dn again when the unexpected rising of voltage.
Fig. 5 circuit and the difference of Fig. 3 are to be connected in series adjustable resistance R1 between filter capacitor and the light-emitting diode group Dn, regulate the resistance of R1, can adjust the brightness of light emitting diode.
Fig. 6 is a kind of light-emitting diode display panel internal circuit that is organically combined with doorbell.Its special character is also to contain triode BT1, loudspeaker Y, button K, ic chip 1, concussion resistance R in the circuit.The model of ic chip 1 is CW93285 or KD128, and 1,2 pin connect the concussion resistance R, and 3 pin connect positive source, and 4 pin meet button K, and 5 pin connect triode BT1 base stage, 6 pin ground connection, and the collector of triode connects positive source through loudspeaker Y, grounded emitter.After bell button K pressed, ic chip 1 got electroshock and swings, and Sasser produces acoustic signal by microprogram among the IC1 and music ROM, amplified promotion loudspeaker Y sounding again by triode BT1.Like this, light-emitting diode display panel and doorbell can shared same power supplys, and be separate during work, thereby saved element, makes product have comprehensive function.
Claims (4)
1. light-emitting diode display panel, form by insulation shell, printing opacity indicator board and internal circuit, described internal circuit comprises light-emitting diode group, it is characterized in that: described internal circuit also comprises bridge rectifier circuit, filter capacitor, its connecting relation is: power lead connects the bridge rectifier circuit input end, the bridge rectifier circuit output terminal connects the filter capacitor positive and negative terminal respectively, and filter capacitor is in parallel with light-emitting diode group.
2. light-emitting diode display panel according to claim 1 is characterized in that: the other voltage stabilizing diode that also is parallel with of described filter capacitor.
3. light-emitting diode display panel according to claim 1 is characterized in that: be connected in series adjustable resistance between described filter capacitor and the light-emitting diode group.
4. light-emitting diode display panel according to claim 2 is characterized in that: also contain the doorbell circuit of mainly being made up of triode, loudspeaker, button, integrated package in the described circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247577 CN2317524Y (en) | 1997-10-24 | 1997-10-24 | Light-emitting diode display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247577 CN2317524Y (en) | 1997-10-24 | 1997-10-24 | Light-emitting diode display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2317524Y true CN2317524Y (en) | 1999-05-05 |
Family
ID=33955010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97247577 Expired - Fee Related CN2317524Y (en) | 1997-10-24 | 1997-10-24 | Light-emitting diode display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2317524Y (en) |
-
1997
- 1997-10-24 CN CN 97247577 patent/CN2317524Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |