CA2011424C - Display board assembly - Google Patents
Display board assemblyInfo
- Publication number
- CA2011424C CA2011424C CA 2011424 CA2011424A CA2011424C CA 2011424 C CA2011424 C CA 2011424C CA 2011424 CA2011424 CA 2011424 CA 2011424 A CA2011424 A CA 2011424A CA 2011424 C CA2011424 C CA 2011424C
- Authority
- CA
- Canada
- Prior art keywords
- symbol
- symbol display
- unit
- front panel
- board assembly
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
- G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
DISPLAY BOARD ASSEMBLY
ABSTRACT
A display board assembly, which includes a start unit connected to an end unit with a variety of intermediate display units set in therebetween in a line. By means of color contrast and diaphaneity differentiate the symbols on the intermediate which show a certain meaning collectively can be clearly seen in the day. When in the dark, a photosensor control power supply automatically turn on the light emitting diodes of the intermediate display units to illuminate the symbols thereon.
cont'd / 2
ABSTRACT
A display board assembly, which includes a start unit connected to an end unit with a variety of intermediate display units set in therebetween in a line. By means of color contrast and diaphaneity differentiate the symbols on the intermediate which show a certain meaning collectively can be clearly seen in the day. When in the dark, a photosensor control power supply automatically turn on the light emitting diodes of the intermediate display units to illuminate the symbols thereon.
cont'd / 2
Description
2(~1~424 DI~CLO~UR~
The present invention relates to display boards and more particularly to a built-up type display board for showing house number, name of householder or other symbols.
Regular doorplates, signboards or other display boards are generally made according to order. It is indeed expensive and needs a certain period of time to order a doorplate, signboard or the like. Further, regular doorplates are not clearly visible in the night or dark weather. Therefore, an additional lighting device shall be prepared.
One object of the present invention is to provide a display board assembly which can be made through mass production to reduce its cost.
Another ob~ect of the present invention is to provide a display board which can be flexibly assembled according to requirement.
Still another object of the present invention is to provide a display board which utilizes a photosensor to control its light emitting elements to produce light in the dark.
cont'd / 3 ~ .. . .
, .
- `,4~ -~o~
DRAWINGS
BRIEF DESCRIPTION OF T~E DRAWINGS
Figure 1 is a framentary perspective view of a symbol display unit according to the present invention.
Figure 2 is a schematic drawing illustrating the connection of one symbol display unit with another.
Figure 3 is a shcematic drawing illustrating an operation to couple three symbol display units with a start unit and an end unit.
Figure 4 illustrates an automatic dark turn on power module addording to the present invention.
0 Figure 5 illustrates a light emitting diode ~ hereafter LED ) display module according to the present invention.
con'd / ~ ~
.,:
, ~ .
4_ 2~ 24 Detailed Description of the Preferred Embodiment ............ _. .. _ With reference to Figure 1, a symbol display unit in accordance with the present invention includes a front panel 1 attached to a bottom block 2 with a printed circuit board 3 received therein, in which the front panel l has a symbol therein, which symbol can be a number, character or sign.
A front panel 1 of a symbol display unit in accordance ~ith the present inventio~ comprises a transparent symbol portion 11 and an opaque non-symbol portion 12 on its front face, wherein the transparent symbol portion 11 is tinted or colorless, and the opaque non-symbol portion 12 is colored in such a way to present a striking contrast to the transparent symbol portion 11 so that the symbol thereon can be prominent and clearly seen in the day. A bottom block 2 of a symbol display unit according to the present invention comprises and unitary upper L-shaped projecting end 21 and a lower L-shaped projecting end 22 at its one side, two L-shaped recesses 23, 29 on an opposite side to compensate for the L-shaped projecting ends 21, 22, four stub tenons 24, 25, 26, 27 internally upstanding therefrom in the four corners thereof for the positioning therein of a printed circuit board 3. A
printed circuit board 3 of a symbol display unit of the present invention comprises a plurality of LED 31 respectively arranged at an area corresponding to the symbol portion 11 of the front panel 1 of such a symbol display unit, a power plug 32 thereon,and a power socket 33 opposite to its power plug 32 Further, the front panel 1 of a symbol display unit comprises two notches 13 corresponding to the power plug 32 and the power socket 33 of a printed circuit board 3. Therefore, when a printed circuit board 3 is received in a bottom block 2 and a front panel 1, the power plug 32 and the power socket 33 of such a printed circuit board 3 are exposed for connection.
A~ illustrated in Figure 2, two or more symbol display units of the present invention can be conveniently connected together by means of screws 4 or lock pins to form a board assembly. The two L-shaped pro~ecting ends 21, 22 of the bottom block 2, and power plug 32, of one symbol display unit are respectively set in the two L-shaped recesses 23, 29 and power socket 33 of another symbol display unit and firmly fixed up together by means of screwa 4 through the holes thereon.
con'td / ~5 ', ;
(Amended June 6, l99o) 2 011~ 2 4 Referring to Figure 3, a start unit 5 of the present invention comprises two L-shaped recesses 23', 29' and a power socket 33' corresponding to the two L-shaped projecting ends 21, 22 and the power plug 32 of a symbol display unit for connection ( Please refer to Figure 2 ). An end unit 6 of the present invention comprises two L-shaped projecting ends and a power plug corresponding to the two L-shaped recesses 23,29 and the power socket 33 of a symbol display unit connection. In a display board assembly, the start unit 5 and the end unit 6 are lo respectively structured to compensate for each other and can be firmed on the wall by screws 52, 53, 62, 63. The start unit 5 and end unit 6 can be made to arrange in reverse order. The end unit 6 also comprises a window 61 through which a photosensor therein can detect the intensity of outside light, and a power supply device 7 to convert regular alternating current power to a lower voltage of alternating current power for the operation of the present invention.
Figure 4 illustrates an automatic dark turn on power module according to the present invention. Alternating current power is treated through a power supply device 7, transformer, for voltage dropping and rectified by a bridge BRl or a diode to provide a direct current power. The direct current power thus obtained is sent through a conducting silicon controlled rectifier Ql to a LED modules.
In the circuit of Fig. 4: Resistor R1, zener Dæ and current limiting resistor R2 develop regulated triggering voltage for the gate of silicon controlled rectifier Q1. This voltage is controlled by photosensor Q2 that is connecting over the gate of the silicon controlled rectifier Q1. When the photosensor Q2 receives small amount of incidence light, it acts as high impedance, so that the gate voltage can trigger silicon controlled rectifier Ql to conducting state. Contrary, when the photosensor Q2 receives large amount of incidence light, it acts as very low impedance, so that the gate voltage 35 i9 shunted down by the photosensor Q2, to turn off the silicon controlled rectifier Ql. On the display board assembly: During the day under good vision condition,the photosensor Q2 receives large amount of light, to turn off the silicon controlled rectifier Ql, therefore, no direct current power is sent to the LED modules. On the contrary, the photosen90r Q2 detects small amount of light under dark condition at night, to turn on the silicon controlled rectifier Q2, therefore,direct current power supplies necessary working voltage to LED modules.
con'td / ~ ~
- ~- 2~ 2~
Referring to the LED display module of Figure 5, a plurality of LEDs are connected into several branches which are disposed in parallel with each other, in which each branch is comprises of a current limiting resistor (R2, R3, R4, etc.) connected with several LEDs in series.
The impedance of each current limiting resistor is deter-mined according to the total quantity of LEDs in each branch. As described, the present invention utilizes low voltage for its operation. It helps to reduce power consumption and extend LED's service life.
:' ' .' ' : ,
The present invention relates to display boards and more particularly to a built-up type display board for showing house number, name of householder or other symbols.
Regular doorplates, signboards or other display boards are generally made according to order. It is indeed expensive and needs a certain period of time to order a doorplate, signboard or the like. Further, regular doorplates are not clearly visible in the night or dark weather. Therefore, an additional lighting device shall be prepared.
One object of the present invention is to provide a display board assembly which can be made through mass production to reduce its cost.
Another ob~ect of the present invention is to provide a display board which can be flexibly assembled according to requirement.
Still another object of the present invention is to provide a display board which utilizes a photosensor to control its light emitting elements to produce light in the dark.
cont'd / 3 ~ .. . .
, .
- `,4~ -~o~
DRAWINGS
BRIEF DESCRIPTION OF T~E DRAWINGS
Figure 1 is a framentary perspective view of a symbol display unit according to the present invention.
Figure 2 is a schematic drawing illustrating the connection of one symbol display unit with another.
Figure 3 is a shcematic drawing illustrating an operation to couple three symbol display units with a start unit and an end unit.
Figure 4 illustrates an automatic dark turn on power module addording to the present invention.
0 Figure 5 illustrates a light emitting diode ~ hereafter LED ) display module according to the present invention.
con'd / ~ ~
.,:
, ~ .
4_ 2~ 24 Detailed Description of the Preferred Embodiment ............ _. .. _ With reference to Figure 1, a symbol display unit in accordance with the present invention includes a front panel 1 attached to a bottom block 2 with a printed circuit board 3 received therein, in which the front panel l has a symbol therein, which symbol can be a number, character or sign.
A front panel 1 of a symbol display unit in accordance ~ith the present inventio~ comprises a transparent symbol portion 11 and an opaque non-symbol portion 12 on its front face, wherein the transparent symbol portion 11 is tinted or colorless, and the opaque non-symbol portion 12 is colored in such a way to present a striking contrast to the transparent symbol portion 11 so that the symbol thereon can be prominent and clearly seen in the day. A bottom block 2 of a symbol display unit according to the present invention comprises and unitary upper L-shaped projecting end 21 and a lower L-shaped projecting end 22 at its one side, two L-shaped recesses 23, 29 on an opposite side to compensate for the L-shaped projecting ends 21, 22, four stub tenons 24, 25, 26, 27 internally upstanding therefrom in the four corners thereof for the positioning therein of a printed circuit board 3. A
printed circuit board 3 of a symbol display unit of the present invention comprises a plurality of LED 31 respectively arranged at an area corresponding to the symbol portion 11 of the front panel 1 of such a symbol display unit, a power plug 32 thereon,and a power socket 33 opposite to its power plug 32 Further, the front panel 1 of a symbol display unit comprises two notches 13 corresponding to the power plug 32 and the power socket 33 of a printed circuit board 3. Therefore, when a printed circuit board 3 is received in a bottom block 2 and a front panel 1, the power plug 32 and the power socket 33 of such a printed circuit board 3 are exposed for connection.
A~ illustrated in Figure 2, two or more symbol display units of the present invention can be conveniently connected together by means of screws 4 or lock pins to form a board assembly. The two L-shaped pro~ecting ends 21, 22 of the bottom block 2, and power plug 32, of one symbol display unit are respectively set in the two L-shaped recesses 23, 29 and power socket 33 of another symbol display unit and firmly fixed up together by means of screwa 4 through the holes thereon.
con'td / ~5 ', ;
(Amended June 6, l99o) 2 011~ 2 4 Referring to Figure 3, a start unit 5 of the present invention comprises two L-shaped recesses 23', 29' and a power socket 33' corresponding to the two L-shaped projecting ends 21, 22 and the power plug 32 of a symbol display unit for connection ( Please refer to Figure 2 ). An end unit 6 of the present invention comprises two L-shaped projecting ends and a power plug corresponding to the two L-shaped recesses 23,29 and the power socket 33 of a symbol display unit connection. In a display board assembly, the start unit 5 and the end unit 6 are lo respectively structured to compensate for each other and can be firmed on the wall by screws 52, 53, 62, 63. The start unit 5 and end unit 6 can be made to arrange in reverse order. The end unit 6 also comprises a window 61 through which a photosensor therein can detect the intensity of outside light, and a power supply device 7 to convert regular alternating current power to a lower voltage of alternating current power for the operation of the present invention.
Figure 4 illustrates an automatic dark turn on power module according to the present invention. Alternating current power is treated through a power supply device 7, transformer, for voltage dropping and rectified by a bridge BRl or a diode to provide a direct current power. The direct current power thus obtained is sent through a conducting silicon controlled rectifier Ql to a LED modules.
In the circuit of Fig. 4: Resistor R1, zener Dæ and current limiting resistor R2 develop regulated triggering voltage for the gate of silicon controlled rectifier Q1. This voltage is controlled by photosensor Q2 that is connecting over the gate of the silicon controlled rectifier Q1. When the photosensor Q2 receives small amount of incidence light, it acts as high impedance, so that the gate voltage can trigger silicon controlled rectifier Ql to conducting state. Contrary, when the photosensor Q2 receives large amount of incidence light, it acts as very low impedance, so that the gate voltage 35 i9 shunted down by the photosensor Q2, to turn off the silicon controlled rectifier Ql. On the display board assembly: During the day under good vision condition,the photosensor Q2 receives large amount of light, to turn off the silicon controlled rectifier Ql, therefore, no direct current power is sent to the LED modules. On the contrary, the photosen90r Q2 detects small amount of light under dark condition at night, to turn on the silicon controlled rectifier Q2, therefore,direct current power supplies necessary working voltage to LED modules.
con'td / ~ ~
- ~- 2~ 2~
Referring to the LED display module of Figure 5, a plurality of LEDs are connected into several branches which are disposed in parallel with each other, in which each branch is comprises of a current limiting resistor (R2, R3, R4, etc.) connected with several LEDs in series.
The impedance of each current limiting resistor is deter-mined according to the total quantity of LEDs in each branch. As described, the present invention utilizes low voltage for its operation. It helps to reduce power consumption and extend LED's service life.
:' ' .' ' : ,
Claims
(1) A display board assembly, including:
a start unit and an end unit respectively structured to compensate for each other, said end unit comprising a window having set therein a photosensor to detect the intensity of ambient light and an electric power supply device to convert regular alternating current power to low voltage alternating current power; and a plurality of symbol display units, each of which comprising a front panel attached to a bottom block with a printed circuit board received therein, said bottom block comprising two L-shaped projecting ends at its one side and two L-shaped recesses at an opposite side, said front panel having a symbol thereon, said printed circuit board comprising a plurality of LEDs corresponding to the symbol of said front panel, a power plug at its one side and a power socket at an opposite side.
wherein a certain number of said symbol display units are selected and connected together to form a symbol display board, by securing the two L-shaped projecting ends of one symbol display unit to the two L-shaped recesses of another symbol display unit, with said end unit attached thereto at its one end and said start unit at its other end, and said photosensor turns on the LEDs of the printed circuit boards of the selected symbol display units to illuminate the symbols thereon during the dark.
(2) A display board assembly as claimed in claim 1, wherein the front panel of each of said symbol display unit comprises a transparent symbol portion and an opaque non-symbol portion on its front face, said transparent symbol portion being tinted or colorless, and said opaque non-symbol portion being colored in such a way to present a striking contrast to said transparent symbol portion so that the symbol thereon can be prominent and clearly seen in the day.
a start unit and an end unit respectively structured to compensate for each other, said end unit comprising a window having set therein a photosensor to detect the intensity of ambient light and an electric power supply device to convert regular alternating current power to low voltage alternating current power; and a plurality of symbol display units, each of which comprising a front panel attached to a bottom block with a printed circuit board received therein, said bottom block comprising two L-shaped projecting ends at its one side and two L-shaped recesses at an opposite side, said front panel having a symbol thereon, said printed circuit board comprising a plurality of LEDs corresponding to the symbol of said front panel, a power plug at its one side and a power socket at an opposite side.
wherein a certain number of said symbol display units are selected and connected together to form a symbol display board, by securing the two L-shaped projecting ends of one symbol display unit to the two L-shaped recesses of another symbol display unit, with said end unit attached thereto at its one end and said start unit at its other end, and said photosensor turns on the LEDs of the printed circuit boards of the selected symbol display units to illuminate the symbols thereon during the dark.
(2) A display board assembly as claimed in claim 1, wherein the front panel of each of said symbol display unit comprises a transparent symbol portion and an opaque non-symbol portion on its front face, said transparent symbol portion being tinted or colorless, and said opaque non-symbol portion being colored in such a way to present a striking contrast to said transparent symbol portion so that the symbol thereon can be prominent and clearly seen in the day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2011424 CA2011424C (en) | 1990-03-05 | 1990-03-05 | Display board assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2011424 CA2011424C (en) | 1990-03-05 | 1990-03-05 | Display board assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2011424A1 CA2011424A1 (en) | 1991-09-05 |
| CA2011424C true CA2011424C (en) | 1993-05-18 |
Family
ID=4144446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2011424 Expired - Lifetime CA2011424C (en) | 1990-03-05 | 1990-03-05 | Display board assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2011424C (en) |
-
1990
- 1990-03-05 CA CA 2011424 patent/CA2011424C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2011424A1 (en) | 1991-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5020253A (en) | Display board assembly | |
| US7220019B2 (en) | Multi-color illuminated sign | |
| US6367180B2 (en) | Electronic illuminated house sign | |
| US5539623A (en) | Lighting device used in an exit sign | |
| JP4700252B2 (en) | Optical track for signboards with flexibility | |
| US4016450A (en) | Phosphorescent display system | |
| US7685753B2 (en) | LED illuminated house number and sign characters | |
| ES2177198T3 (en) | PIXEL PROVIDED WITH UPPER LED CONTACTS ON A FLAT AND SCREENS THAT INCLUDE IT. | |
| US6031468A (en) | Warning light adapted for use with a stop sign | |
| US5469347A (en) | Retro-fit illuminated sign module and method | |
| US7213962B2 (en) | High-efficiency circuit-equipped light emitting board | |
| US6745507B2 (en) | Address illumination assembly | |
| US4272901A (en) | Lighted address sign | |
| KR100694877B1 (en) | Tile type led module | |
| US6987710B2 (en) | Alarm clock with dial illumination | |
| CA2011424C (en) | Display board assembly | |
| KR101291233B1 (en) | Knob switch for lighting | |
| CN201015078Y (en) | Combination type luminous indication device | |
| EP0660513A3 (en) | An electronic circuit to replace a light emitting diode and a light dependent resistor. | |
| WO2004106804A2 (en) | Illuminatable device | |
| EP0786129B1 (en) | Illuminatable sign | |
| CA2506918C (en) | Multi-colour illuminated sign | |
| KR200365961Y1 (en) | Interior clock using for 4-color led | |
| KR200238368Y1 (en) | wall clock printing plate lighting device | |
| KR980011555A (en) | Switch device with light emitting display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |