CN202094628U - Current impact prevention device for elevator display - Google Patents
Current impact prevention device for elevator display Download PDFInfo
- Publication number
- CN202094628U CN202094628U CN2011201966995U CN201120196699U CN202094628U CN 202094628 U CN202094628 U CN 202094628U CN 2011201966995 U CN2011201966995 U CN 2011201966995U CN 201120196699 U CN201120196699 U CN 201120196699U CN 202094628 U CN202094628 U CN 202094628U
- Authority
- CN
- China
- Prior art keywords
- display
- circuit board
- printed circuit
- prevention device
- elevator
- 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
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The utility model discloses a current impact prevention device for an elevator display, which comprises the display. A printed circuit board is mounted inside the display, and a capacitor is connected between a grounding end of the printed circuit board and the ground. The current impact prevention device is simple in structure and remarkable in effect, can effectively prevent reverse current only by means of connecting the capacitor between the grounding end of the printed circuit board and the ground, can also absorb noise, accordingly reduces fluctuation of voltage, avoids the problem of uneven picture display due to interference on the display, guarantees higher display quality, simultaneously is convenient in installation and low in cost, and is favorable for massive production and large-scale popularization and utilization.
Description
Technical field
The utility model relates to a kind of elevator display unit, is specifically related to a kind of anti-rush of current device that is used for elevator display unit.
Background technology
At present, elevator is widely used in places such as office building, residential building, hotel and commercial building.
In elevator outside and elevator inside the calling display is installed all, the calling display can be indicated the floor number of plies and be shown the elevator propradation or the decline state.But there is following drawback in existing calling display: the earth terminal of the printed circuit board of calling display interior all is direct ground connection, phenomenon appears pouring in down a chimney easily, can cause the electric current in the circuit board excessive, cause the judder of calling display, mistake perhaps occur showing.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of anti-rush of current device that is used for elevator display unit, can effectively prevent electric current and pour in down a chimney phenomenon.
Technical scheme: for achieving the above object, a kind of anti-rush of current device that is used for elevator display unit of the present utility model comprises display, in the described display printed circuit board is installed, and is connected with electric capacity between the earth terminal of described printed circuit board and the earth.
For the noise in the better filtering electric current, described electric capacity is electrochemical capacitor, and the size of described electric capacity is 0.1～10nF.
As preferably, the size of described electric capacity is 1nF, and this moment, the filtering noise effect was best.
Beneficial effect: a kind of anti-rush of current device that is used for elevator display unit of the present utility model compared with prior art, has the following advantages:
1, simple in structure, effect is remarkable, only between the earth terminal of printed circuit board and the earth, be connected electric capacity, just can effectively prevent electric current and pour in down a chimney phenomenon, all right absorption of noise, reduce voltage fluctuation thus, avoid display to cause picture to show inequality, guarantee higher display quality because of being subjected to cross (talk);
2, easy for installation, with low cost, help producing in batches and the large-scale promotion use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
As shown in Figure 1, a kind of anti-rush of current device that is used for elevator display unit of the present utility model comprises display, and printed circuit board 1 is installed in the display, is connected with electric capacity 2 between the earth terminal of printed circuit board 1 and the earth 3.
In the present embodiment, electric capacity 2 adopts electrochemical capacitor, and the size of electric capacity can be 0.1～10nF, is preferably 1nF, can prevent effectively that electric capacity 2 is breakdown, and this moment, the filtering noise effect was best, can make display working stability, reliable.Be connected electric capacity 2 between the earth terminal of printed circuit board 1 and the earth 3, can effectively prevent electric current and pour in down a chimney phenomenon, can guarantee higher display quality, it is more stable that display picture is shown.Because the utility model is simple in structure, with low cost, so can realize producing in enormous quantities and promoting the use of.
The above only is a preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. an anti-rush of current device that is used for elevator display unit comprises display, it is characterized in that: printed circuit board (1) is installed in the described display, is connected with electric capacity (2) between the earth terminal of described printed circuit board (1) and the earth (3).
2. a kind of anti-rush of current device that is used for elevator display unit according to claim 1, it is characterized in that: described electric capacity (2) is electrochemical capacitor.
3. a kind of anti-rush of current device that is used for elevator display unit according to claim 1 and 2, it is characterized in that: the size of described electric capacity (2) is 0.1～10nF.
4. a kind of anti-rush of current device that is used for elevator display unit according to claim 3, it is characterized in that: the size of described electric capacity (2) is 1nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201966995U CN202094628U (en) | 2011-06-13 | 2011-06-13 | Current impact prevention device for elevator display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201966995U CN202094628U (en) | 2011-06-13 | 2011-06-13 | Current impact prevention device for elevator display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094628U true CN202094628U (en) | 2011-12-28 |
Family
ID=45369671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201966995U Expired - Fee Related CN202094628U (en) | 2011-06-13 | 2011-06-13 | Current impact prevention device for elevator display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579524A (en) * | 2017-10-23 | 2018-01-12 | 成都旭思特科技有限公司 | Suitable for the protection mechanism of active filter |
-
2011
- 2011-06-13 CN CN2011201966995U patent/CN202094628U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579524A (en) * | 2017-10-23 | 2018-01-12 | 成都旭思特科技有限公司 | Suitable for the protection mechanism of active filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202094628U (en) | Current impact prevention device for elevator display | |
| CN202282527U (en) | Direct current blocking radio frequency connector | |
| CN202058896U (en) | Switch cabinet adaptor | |
| CN203596582U (en) | Power transmission equipment transiting overhead line into cable line | |
| CN205016444U (en) | Load switch is with insulating barrel | |
| CN202333335U (en) | Video socket | |
| CN202696342U (en) | Motor junction box | |
| CN202503280U (en) | Current-mode reverse current injection device | |
| CN101764292A (en) | Rapid joint | |
| CN207010997U (en) | A kind of communication equipment high efficiency power saving device | |
| CN204792429U (en) | Jam -proof condenser | |
| CN202837623U (en) | Multimedia case | |
| CN203826581U (en) | Wire clamp for copper-aluminum filtering equipment | |
| CN202068360U (en) | Power component suitable for draw out type medium-voltage solid state soft starter | |
| CN203085327U (en) | High-voltage connecting device of dry-type electric transformer | |
| CN201130324Y (en) | Input circuit for digital quantity of DCS control system | |
| CN206806853U (en) | A kind of current transformer installing structure of high-voltage switch gear gas-filling cabinet | |
| CN204230051U (en) | A kind of corner combined capacitor | |
| CN204291198U (en) | A kind of novel portable SD image gain apparatus | |
| CN205657431U (en) | T meets line structure | |
| CN203326519U (en) | Multilayer reinforcing L-shaped wall carrier | |
| CN202978193U (en) | Hanging bracket used for lightning arrester | |
| CN203387129U (en) | Terminal wiring box | |
| CN204423029U (en) | A kind of novel intelligent electric appliance switchgear for modern plant | |
| CN202758691U (en) | Suspended type lightning arrester grounding internal insulation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20180613 |