CN218241248U - LED display panel and elevator of elevator - Google Patents
LED display panel and elevator of elevator Download PDFInfo
- Publication number
- CN218241248U CN218241248U CN202221639215.4U CN202221639215U CN218241248U CN 218241248 U CN218241248 U CN 218241248U CN 202221639215 U CN202221639215 U CN 202221639215U CN 218241248 U CN218241248 U CN 218241248U
- Authority
- CN
- China
- Prior art keywords
- elevator
- display panel
- printed circuit
- light
- led
- 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.)
- Active
Links
Images
Landscapes
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The utility model provides a LED display panel and elevator of elevator, it mainly is by the setting of printed circuit board dot matrix LED fluorescent tube on the printed circuit board, set up on the printed circuit board and be connected with the drive chip of the drive circuit electricity of dot matrix LED fluorescent tube, one end and drive chip electricity are connected, and the other end constitutes such as triode that the drive circuit electricity of dot matrix LED fluorescent tube is connected. The other end of the triode is electrically connected with a power supply circuit on the printed circuit substrate; and when the real-time voltage output by the driving chip to the dot matrix LED lamp tube is smaller than the preset voltage, the reverse output voltage of the triode is larger than the real-time voltage. Compared with the prior art, the LED display panel and the elevator of elevator that this application provided can guarantee that the electric current of the power supply of the LED fluorescent tube of dot matrix type is sufficient to prevent that LED from being in the reverse voltage state for a long time.
Description
Technical Field
The utility model relates to an elevator field especially relates to a LED display panel and elevator of elevator.
Background
The LED display panel of the elevator is used as a display device commonly used in the elevator to display information related to the elevator, so that a user can conveniently perform corresponding operation.
In the prior art, the PCB substrate of the LED display panel of the elevator is usually provided with a dot matrix type LED lamp, however, in the prior art, when the driving circuit provided on the PCB substrate supplies power to the LED lamp, there are the following defects: 1. the current of the power supply is insufficient; 2. reverse voltage is generated at two ends of the LED which is not bright, and display disorder codes of the display panel are easy to cause.
Therefore, how to provide LED display panel and the elevator of an elevator, the electric current of the power supply of the LED fluorescent tube of assurance dot matrix type is sufficient to it is in reverse voltage state to prevent that LED is for a long time the utility model discloses the technical problem who needs to solve is urgent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem how to provide a LED display panel and elevator of elevator, guarantee that the electric current of the power supply of the LED fluorescent tube of dot matrix type is sufficient to prevent that LED from being in the reverse voltage state for a long time.
In order to realize the technical problem, the utility model provides a LED display panel of elevator, include: a printed circuit board;
the dot matrix LED lamp tube is arranged on the printed circuit substrate;
the driving chip is arranged on the printed circuit substrate and is electrically connected with the driving circuit of the dot matrix LED lamp tube;
the triode is electrically connected with the driving chip at one end and the driving circuit of the dot matrix LED lamp tube at the other end;
the other end of the triode is electrically connected with a power supply circuit on the printed circuit substrate;
and when the real-time voltage output by the driving chip to the dot matrix LED lamp tube is smaller than the preset voltage, the reverse output voltage of the triode is larger than the real-time voltage.
Further preferably, the driving chip is a 74HC595 chip.
Preferably, the dot matrix LED lamp tube has at least eight groups of lamp tubes, and pins of each group of lamp tubes on the driving circuit correspond to the number of corresponding pins on the driving chip and the number of the triodes one to one, and form an electrical connection.
Further preferably, the output voltage is an output voltage of a power supply on the printed circuit board. The power supply is an internal or external power supply;
further preferably, the method further comprises the following steps: the display support plate is arranged on the LED lamp tube; the display support plate is provided with a light transmitting area and a light shading area, and the light transmitting area is used for transmitting light irradiated by the LED lamp tube to form dynamically displayed graphic information.
Preferably, the cathode and the anode of each LED lamp tube are disposed in the trace area on the printed circuit board by means of a patch welding method.
Further preferably, the LED lamp tubes are arranged according to the region interval layout of the light-transmitting area; the pattern formed by the arrangement path of each LED lamp tube is a digital pattern; the light-transmitting region includes a plurality of mutually independent and spaced sub-regions.
Further preferably, the display stand plate includes: the light-transmitting plate is arranged on the LED lamp tube; the shading coating is laid on the upper surface of the light-transmitting plate to form the shading area; wherein, the upper surface of light-transmitting board is not covered and the region forms the light-transmitting area.
Further preferably, the display support plate further comprises: a plurality of insulating columns arranged on the printed circuit substrate and used for supporting and connecting the light-transmitting plate; the insulating column is arranged on the non-circuit area of the wiring area.
Further preferably, the insulation posts are arranged at intervals in an annular or rectangular shape and connected with the bottom of the display support plate in a hot melting mode.
The present application further provides an elevator, including: the LED display panel of above-mentioned elevator.
Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the utility model provides a LED display panel and elevator of elevator can guarantee that the electric current of the power supply of the LED fluorescent tube of dot matrix type is sufficient to prevent that LED from being in the reverse voltage state for a long time.
Drawings
Fig. 1 is a schematic diagram of a circuit module of an LED display panel of an elevator according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an LED display panel of an elevator according to the second embodiment of the present invention;
FIG. 3 is a schematic diagram of a back structure of a printed circuit board according to a second embodiment of the present invention;
FIG. 4 is a schematic front view of a printed circuit board according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a dot matrix LED lamp on a printed circuit substrate according to a second embodiment of the present invention;
fig. 6 is a schematic sectional view of an LED display panel of an elevator according to the second embodiment of the present invention;
fig. 7 is a schematic view of a cross-sectional structure of an LED display panel of an elevator according to three embodiments of the present invention.
Detailed Description
The LED display panel of the elevator and the elevator of the present invention will be described in more detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that a person skilled in the art can modify the invention described herein, while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
Example one
Referring to fig. 1 to 2, in the present embodiment, an LED display panel for an elevator is provided, which mainly comprises a printed circuit board 1, a dot matrix LED lamp 2 disposed on the printed circuit board, a driving chip 5 disposed on the printed circuit board 1 and electrically connected to a driving circuit of the dot matrix LED lamp 2, a transistor 6 having one end electrically connected to the driving chip 5 and the other end electrically connected to the driving circuit of the dot matrix LED lamp 2, and the like.
Wherein, the other end of the triode 6 is electrically connected with a power supply circuit on the printed circuit substrate 1;
and when the real-time voltage output by the driving chip to the dot matrix LED lamp tube 2 is smaller than the preset voltage, the reverse output voltage of the triode 6 is larger than the real-time voltage.
According to the structure, the following components are adopted: by adding the triode 6 (preferably DTA123 JUA) between the driving chip 5 and the driving circuit of the dot matrix LED lamp tube 2, the LED lamp tube 2 which does not need to be lighted is in a high-resistance state, especially when the output voltage of the driving chip 5 is instantaneously 0 (because the logic control needs to output the voltage 0), the LED lamp tube 2 is in a non-reverse voltage state under the action of the triode 6, the service life of the LED lamp tube 2 is prolonged, and the problems that a part of display failure occurs after the dot matrix LED lamp tube 2 is used for a long time (for example, after two or three years), so that a display panel has messy codes and the like can be solved. Therefore, the structure can ensure that the current of the power supply of the LED lamp tube of the dot matrix type is sufficient, particularly the current of the forward power supply current is sufficient, and prevent the LED from being in a reverse voltage state for a long time.
Further preferably, the driving chip 5 is a 74HC595 chip. Through the chip, not only can stable and enough supply current be provided for the dot matrix LED lamp tube, but also the cost can be saved.
Further preferably, the dot matrix LED lamp 2 has at least eight groups of lamps, and the pins of each group of lamps on the driving circuit correspond to the number of the corresponding pins on the driving chip 5 and the number of the triodes 6 one by one, and form the electrical connection. It is worth mentioning that the lamps in each group can be connected to the corresponding driving circuit in series or in parallel according to actual requirements.
Further preferably, the output voltage is an output voltage of a power supply on the printed circuit substrate for cost saving and optimization of the circuit configuration. The power supply can be set as an internal power supply or an external power supply according to actual requirements.
It should be noted that the present embodiment is described only by taking the output voltage and the reverse output voltage as an example, and the output voltage and the reverse output voltage are preferably 5V. Obviously, it should be noted that the real-time output voltage and the reverse output voltage may also be designed to be other voltages according to actual requirements, for example, 6V, 7V, etc., that is, it is enough to ensure that the output voltage is always greater than the minimum value of the real-time output voltage.
It should be noted that the driving circuit in this embodiment may be a part of the driving substrate 21 independently provided on the printed circuit board.
Example two
Referring to fig. 3 to 6, in the present embodiment, an LED display panel for an elevator is provided, which is substantially the same as the first embodiment, except that the driving circuit is preferably a part of a power supply circuit disposed on a printed circuit board.
Because the dot matrix LED lamp tube 2 in the display panel in the embodiment is directly arranged on the printed circuit board 1 (PCB), and the printed circuit board 1 supplies power, and simultaneously, the dynamic display of the graphic information is realized through the cooperation of the display support plate 3 arranged on the dot matrix LED lamp tube 2 and the bright lamp of the dot matrix LED lamp tube 2, and the whole installation structure does not need to customize the nixie tube independently, and a plurality of welding pins are arranged on the printed circuit board 1, and pins of the circuit board of the welded nixie tube are used for pins of the circuit board, so that the structure is simplified, the whole thickness of the printed circuit board 1 is reduced, especially, the circuit board and the welding pins of the nixie tube are omitted, thereby the gap thickness between the display support plate 3 and the printed circuit board can be reduced, therefore, the structure is simplified, and the cost is reduced.
Further preferably, the LED display panel of the elevator in this embodiment further includes: a display support plate 3 arranged on the LED lamp tube 2, etc. The display support plate 3 is provided with a light transmitting area and a light shading area, and the light transmitting area is used for transmitting light irradiated by the LED lamp tube 2 to form dynamically displayed graphic information.
According to the above, the following contents are: through the mounting structure, the thickness of the gap between the display support plate 3 and the printed circuit board can be reduced, so that the structure is simplified, and the cost is reduced.
Further preferably, the driving circuit in this embodiment is disposed in a part of the power supply circuit on the printed circuit board, so that it is not necessary to separately customize and construct the nixie tube of the dot matrix LED lamp tube during the manufacturing process, and a plurality of solder legs are disposed on the printed circuit board 1 to solder the pins of the circuit board of the nixie tube, thereby simplifying the structure and reducing the overall thickness of the printed circuit board 1, especially omitting the circuit board and the solder legs of the nixie tube
Specifically, in order to facilitate circuit layout and display control of the LED lamp 2 in practical applications, the cathode and the anode of each LED lamp 2 are disposed in the trace area 1a on the printed circuit substrate 1 by means of patch welding.
Further preferably, in order to facilitate design and display requirements in practical application, the LED lamps 2 are arranged according to the region interval layout of the light-transmitting region; the pattern formed by the arrangement path of each LED lamp tube 2 is a digital pattern; the light-transmitting region includes a plurality of mutually independent and spaced sub-regions, such as the sub-regions 31a, 31b, 31c, 31d, etc., shown in fig. 1.
Further preferably, in order to simplify the structure and satisfy the normal use of the display panel, the display support plate 3 in this embodiment may be composed of a light-transmitting plate 31 disposed on the LED tube 2, a light-shielding coating 30 laid on the upper surface of the light-transmitting plate 31 to form a light-shielding area, and the like. The uncovered area of the upper surface of the transparent plate 31 forms a transparent area.
Further preferably, in order to facilitate the installation and fixation of the display bracket plate 3 and to better design and control the thickness of the gap between the display bracket plate 3 and the printed circuit board, the display bracket plate 3 further includes: a plurality of insulating columns 32 disposed on the printed circuit substrate 1 for supporting and connecting the transparent plate 31; the insulating columns 32 are disposed in the non-circuit region of the trace region. In addition, in the present embodiment, the insulating column 32 may be a cylinder made of plastic.
Further preferably, each of the insulating columns 32 is disposed at an interval of a ring shape or a rectangle, and is connected to the bottom of the display bracket plate 3 by a hot melting manner, so as to fix the display bracket plate 3 to the maximum, and reduce the thickness of the gap between the display bracket plate 3 and the printed circuit board.
Further preferably, in order to satisfy the normal use of each LED lamp body and the driving element, the LED lamp tube 2 is an LED lamp body; comprises at least: and a power supply interface 11 disposed in the element region of the printed circuit board 1, electrically connected to each LED lamp 2, and electrically connected to an external power supply.
EXAMPLE III
In this embodiment, an LED display panel for an elevator is provided, which is substantially the same as the second embodiment, except that, referring to fig. 7, the display support plate 3 in this embodiment is composed of a transparent plate 31 disposed on the display lamp body 2, a light shielding film 33 adhered to the upper surface of the transparent plate 31, and the like. One portion of the light shielding film 33 forms a light shielding region 33a, and the other portion forms the light shielding film 33 of the light transmitting region 33 b.
With this structure, the display bracket plate 3 has better versatility, and when a pattern to be displayed better is required, only the light shielding film 33 is replaced without replacing the whole, which is convenient for installation, disassembly, maintenance, recycling, etc.
Further preferably, the light-transmitting plate 31 is a light-guiding plate; the printed circuit board 1 has a plurality of spaced illumination zones for arranging a plurality of LED tubes 2.
Through the structure, the number of the LED lamp tubes 2 can be reduced when the display requirement is met, the LED lamp tubes can be used universally for display patterns in any shapes, and therefore the LED lamp tubes 2 do not need to be arranged according to a path matched with the displayed patterns, the structure is further simplified, and the process and the cost are saved.
Further preferably, the light shielding film 33 at least partially covers the side edge of the light guide plate (not shown in the figure).
Example four
This embodiment also provides an elevator, includes: the LED display panel of an elevator in any of the above embodiments.
Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the utility model provides a LED display panel and elevator of elevator can simplify the structure, reduce cost.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (10)
1. An LED display panel of an elevator, comprising: a printed circuit substrate, further comprising:
the dot matrix LED lamp tube is arranged on the printed circuit substrate;
the driving chip is arranged on the printed circuit substrate and is electrically connected with the driving circuit of the dot matrix LED lamp tube;
the triode is electrically connected with the driving chip at one end and the driving circuit of the dot matrix LED lamp tube at the other end;
the other end of the triode is electrically connected with a power supply circuit on the printed circuit substrate;
and when the real-time voltage output by the driving chip to the dot matrix LED lamp tube is smaller than the preset voltage, the reverse output voltage of the triode is larger than the real-time voltage.
2. The LED display panel for an elevator according to claim 1, wherein the driving chip is a 74HC595 chip; the driving circuit is a part of a driving substrate independently disposed on the printed circuit substrate or a part of a power supply circuit disposed on the printed circuit substrate.
3. The LED display panel of claim 1, wherein the dot matrix LED lamps have at least eight groups of lamps, and the pins of each group of lamps on the driving circuit correspond to the number of the corresponding pins on the driving chip and the number of the triodes one by one, and are electrically connected.
4. The elevator LED display panel according to claim 1, wherein the output voltage is an output voltage of a power supply on the printed circuit substrate; wherein the output voltage is 5V; the power supply is an internal or external power supply.
5. The LED display panel for an elevator according to claim 1, further comprising: the display bracket plate is arranged on the LED lamp tube; the display support plate is provided with a light transmitting area and a light shading area, and the light transmitting area is used for transmitting light irradiated by the LED lamp tube to form dynamically displayed graphic information.
6. The LED display panel of an elevator according to claim 5, wherein the cathode and the anode of each LED lamp are disposed on the trace area on the PCB by means of patch welding.
7. The LED display panel for an elevator according to claim 6, wherein the LED lamps are arranged in a zone-spaced arrangement of the light-transmitting zones; the pattern formed by the arrangement path of each LED lamp tube is a digital pattern; the light-transmitting region includes a plurality of mutually independent and spaced sub-regions.
8. The LED display panel of an elevator according to claim 6, wherein the display bracket plate comprises: the light-transmitting plate is arranged on the LED lamp tube; the shading coating is laid on the upper surface of the light-transmitting plate to form the shading area; wherein, the upper surface of light-passing board is not covered and the region forms the light-passing district.
9. The elevator LED display panel of claim 8, wherein said display bracket plate further comprises: a plurality of insulating columns arranged on the printed circuit substrate and used for supporting and connecting the light-transmitting plate; the insulating column is arranged in a non-circuit area of the wiring area; each insulating column is arranged at intervals in an annular or rectangular shape and is connected with the bottom of the display support plate in a hot melting mode.
10. An elevator, characterized by comprising: the LED display panel of an elevator of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221639215.4U CN218241248U (en) | 2022-06-28 | 2022-06-28 | LED display panel and elevator of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221639215.4U CN218241248U (en) | 2022-06-28 | 2022-06-28 | LED display panel and elevator of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218241248U true CN218241248U (en) | 2023-01-06 |
Family
ID=84674627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221639215.4U Active CN218241248U (en) | 2022-06-28 | 2022-06-28 | LED display panel and elevator of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218241248U (en) |
-
2022
- 2022-06-28 CN CN202221639215.4U patent/CN218241248U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109658828A (en) | Transparent flexible display screen and its transparent circuitry | |
| CN102162597B (en) | Backlight unit and display device including the same | |
| CN202972786U (en) | Planar lighting device | |
| US20120200786A1 (en) | Lighting device, display device and television receiver | |
| CN106980209A (en) | Liquid crystal display device | |
| CN218241248U (en) | LED display panel and elevator of elevator | |
| CN101154351A (en) | Dynamic back light source module group for video controlling brightness and chroma of LED | |
| CN218231416U (en) | Display panel of elevator and elevator | |
| CN218630447U (en) | Display device | |
| CN101299109B (en) | Back light module unit with cuniform butt-joint type light guide board | |
| KR100529812B1 (en) | Display device | |
| CN100501808C (en) | Double side light emitting diode display | |
| CN108762034A (en) | A kind of modified Luminous clock | |
| CN213394692U (en) | Filament and lamp | |
| JP2013190546A (en) | Lighting indicator | |
| JP4819971B1 (en) | Solar integrated display panel system, solar integrated display panel and manufacturing method thereof | |
| CN111043551A (en) | Photoelectric module | |
| CN201547615U (en) | Direct backlight module | |
| CN218240605U (en) | Subregion lamp plate in a poor light with reposition of redundant personnel drive | |
| CN211403035U (en) | RGB backlight | |
| CN212319447U (en) | Backlight lamp strip with uniform brightness | |
| CN201391844Y (en) | Parallel luminous circuit of parallel LED luminous device | |
| CN218101052U (en) | Remote controller structure of independent backlight area | |
| KR20080032757A (en) | Backlight assembly and liquid crystal display comprising the same | |
| CN216561309U (en) | Backlight module, display module and display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |