KR20040013221A - Segment display structure - Google Patents

Abstract

PURPOSE: A segment display structure is provided to extend the lifetime of the segment display by allowing the corresponding elements to be easily replaced or amended when a failure is occurred in the segment display. CONSTITUTION: A segment display structure includes a case(120), a front side case(122), an optical transform member(140) and a rear side case(124). The case(120) displays the characters, symbols and numbers by the display penetration holes. The optical transform member(140) which is connected to the rear side of the front side case(120) by the display penetration holes emits the light beam from the light emitting devices(130) to outside. The rear side case(124) is formed at the rear side of the front side case(122) and is provided with a plurality of divided sidewalls for additionally receiving each of the strokes of the optical transform member(140) and the light emitting devices(130).

Description

Segment display structure}

The present invention relates to a segment display structure, and more particularly, after arranging a segment display PCB in which letters, symbols, and numbers are arranged on a main PCB of an all-optical cover, a separate case may be attached to and detached from the segment display PCB. To one segment display structure.

In general, a segment display is a device that is mounted to various instrument panels and home appliances to express predetermined letters or numbers.

1 is an exploded perspective view of a conventional segment display structure, and FIG. 2 is a side cross-sectional view of a conventional segment display structure.

As shown in FIGS. 1 and 2, the segment display structure of the related art includes a segment display PCB 14 and a segment display PCB 14 having light emitting elements 12 arranged in the form of predetermined letters, numbers, and symbols. The thermosetting resin is filled and solidified in the spaces of the front and rear surfaces of the segment display PCB 14 by the case 10 mounted inside the rear of the segment display PCB 14 and the light emitting device in the case 10. 12) is integrally formed. The segment display is electrically connected to the connection groove 52 formed in the main PCB 50 of the all-optical sign plate through the connection pin 18, which is an electrical medium.

In the conventional segment display as described above, the light emitting element 12 and the segment display PCB 14 are partially embedded in the thermosetting resin, and thus, when an abnormality occurs in the light emitting element 12 or the segment display PCB 14 during use, There was a problem that parts replacement and repair are impossible.

In particular, in the segment display product, the light emitting device 12 may be the most important part. In the case where an error occurs in some of the plurality of light emitting devices 12, there is a problem in that the entire structure of the segment display needs to be replaced.

In addition, the conventional segment display is filled with a thermosetting resin to solidify, so that in the manufacturing process, when foreign matter is mixed into the thermosetting resin or when the curing conditions of the thermosetting resin are unstable, the quality of the product is deteriorated, and the defective rate is increased due to considerable work loss. Done. That is, there is a problem that the manufacturing process is difficult and cumbersome.

The present invention has been made to solve the above-described problems, the LED display for the segment display is arranged on the main PCB of the electroluminescent cover, the light emitting element arranged on the front PCB of the segment display PCB arranged letters, symbols and numbers It is an object of the present invention to provide a segment display structure that can be replaced in the event of an abnormality in the light emitting device by separately attaching them to form a case for forming segments on the front surface of the segment display PCB.

Another object of the present invention is to facilitate the assembly of the segment display by arranging the PCB for the segment display on the main PCB on the electroluminescent cover first and then attaching and detaching the case.

Still another object of the present invention is to enable repair of a corresponding part easily even if an abnormality occurs in the segment display, thereby extending the service life of the segment display without a separate replacement.

In addition, the present invention can further improve the visibility of letters, symbols and numbers by arranging in the form of letters, symbols and numbers so that the light-transmitting member on the case to express the light of the light emitting device to the outside more protruded than the front of the case. It is in such a way.

Furthermore, the present invention is to reduce the defect rate that can occur according to the structure of filling and solidifying the thermosetting resin in the case, to improve the productivity by reducing the manufacturing cost of the segment display.

1 is an exploded perspective view of a conventional segment display structure.

2 is a side cross-sectional view of a conventional segment display structure.

3 is an exploded perspective view of a segment display structure according to the present invention;

4 is a rear perspective view of the segment display structure according to the present invention;

5 is a rear view of the segment display structure according to the present invention.

6 is a side cross-sectional view taken along line AA ′ of FIG. 4;

7 is a cross-sectional view at the time of joining the segment display structure according to the present invention;

8 is a cross-sectional view at the time of disassembling the segment display structure according to the present invention;

*** Description of the symbols for the main parts of the drawings ***

100: segment display 110: segment display PCB

112. Positioning protrusion 120. Case

122. Front Case 124. Rear Case

124a. Positioning groove 126. Bulkhead

128. Accommodating space 130. Light emitting element

140. Light transmitting member 20. May PCB

210. Coupling screw 220. Gasket for moisture proof

As described in the above-mentioned object, the technology according to the present invention allows only a defective light emitting device to be removed and replaced with a new one in the case of a defect in the light emitting small, and the segment display structure is easier to install and detach. It is to be made, it is to improve the visibility more when the expression of letters, symbols and numbers through the projection of the light transmitting member to the outside.

Accordingly, in the configuration of the present invention, the case is coupled to the front surface of the segment display PCB in a state in which the segment display PCB is pre-coupled on the main PCB of the all-optical cover, and is configured to be easily removable. In addition, the light emitting device forming letters, symbols, and numbers and the corresponding strokes of the light transmitting member for expressing the light of the light emitting device are separately partitioned so that they can be displayed to the outside of the light of the light emitting device in a dark room. By doing so, it is configured to further improve the visibility of letters, symbols, and numbers.

The configuration of the present invention devised to achieve the above object is as follows. That is, the present invention is provided in the front of the segment display PCB and the segment display PCB, a plurality of light emitting devices that are arranged in the form of letters, symbols, and numbers to emit light by an applied power source, the light emitting devices are attached and wrapped on the front surface thereof. A segment display structure consisting of a case accommodating a light emitting device to display letters, numbers, and symbols to the outside, the case comprising: a front side case formed through the front and rear through the exit hole in the form of letters, symbols and numbers; A light transmitting member coupled to the front side from the rear side of the front side through the exit hole, the front side of the front side case being coupled to protrude more than the front side of the front side case to condense light emitted from the light emitting element through the rear side and radiate to the outside; And a rear side case which is integrally formed on the rear side of the front side case and has a plurality of partition walls partitioned to separately accommodate the respective light transmitting elements and the respective strokes of the light emitting elements. The PCB is arranged in the form of letters, symbols, and numbers, and the case can be detached by mounting the case in the state of being electrically connected to the front surface of the main PCB of the electric light cover. It is made up of one configuration.

As described above, the technique according to the present invention forms a plurality of accommodation spaces in which the light emitting devices are accommodated through partitions and edges formed on the rear side case of the case, but light emitted from the light emitting devices in a dark state inside the accommodation space is light. It is made of a configuration to make the brightness of the light to be more brightened by being able to be expressed to the outside through the transmission member.

In the above-described configuration, the front side of the light transmitting member is more narrow in width than the rear side, which is better in terms of visibility such as letters, symbols, and numbers.

In addition, the material of the above-described light transmitting member may be made of acrylic or optical fiber.

On the other hand, in the configuration according to the present invention, the front and rear exposed surfaces of the main PCB of the electro-optical cover that the segment display PCB is electrically connected to the front surface may be formed with a moisture-proof coating so that moisture-proof against moisture.

The moisture-proof coating layer may be formed by depositing a gas in the form of a monomer (Monomer) is changed to a gas state by thermal decomposition of the thermoplastic polymer in a solid state in a vacuum furnace.

Hereinafter, exemplary embodiments of a segment display structure according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view of a segment display structure according to the present invention, FIG. 4 is a rear perspective view of the segment display structure according to the present invention, FIG. 5 is a rear view of the segment display structure according to the present invention, and FIG. 6 is A- of FIG. A sectional side view of A ', FIG. 7 is a cross sectional view of the segment display structure in accordance with the present invention, and FIG. 8 is a sectional view of the segment display structure in accordance with the present invention.

As shown in FIG. 3 to FIG. 8, the segment display 100 according to the present invention is largely arranged in letters, numbers, and symbols, and has a light emitting device 130 emitting light by an applied power. Segment display PCB 110 disposed in the shape, the case 120 is installed on the segment display PCB 110 while receiving the light emitting element 130 in the space formed therein, the segment display PCB 110 and It consists of a coupling means for detachably coupling the case 120 and the main PCB 200 of the electro-optical cover that is detachably formed with the case 120 as a base of the segment display PCB 110.

In the embodiment according to the present invention will be described through a seven-segment display expressed from 0 to 9 through the seven light emitting elements (130). First, as shown in FIG. 3, the segment display PCB 110 includes a light emitting device 130 such as a light emitting diode (LED), which is disposed in an '8' shape, through a conductive line (not shown). It is connected to a power source (not shown). In the exemplary embodiment according to the present invention, the three light emitting devices 130 form one segment, but may be represented through at least one light emitting device.

The segment display PCB 110 is installed on the front surface of the main PCB 200 and includes a BCD (Binary Coded Decimal) -to-7 segment decoder (not shown) and a resistor (not shown) including the light emitting device 130 described above. Various elements are attached and wrapped), which can be easily carried out by those of ordinary skill in the art, so detailed description thereof is omitted herein.

Next, the case 120 is that the material is injection molded into an opaque synthetic resin, and consists of a front case 122 and a rear case 124. The front side case 122 is formed at the front of the case 120 to collect light emitted from the light emitting element 130 so that the light transmitting member 140 may be easily recognized from the outside. Is coupled to.

On the other hand, the case 120 described above forms the front side of the case 120, the front case 122, the front side case 122 is fixed to the light transmitting member 140 on the exit hole 122a. A rear side case formed on the rear side of the rear case and accommodating the rear half of the light transmitting member 140 installed in the front side case 122 and the light emitting element 130 installed in the segment display PCB 110 in its inner space ( 124).

The case 120 configured as described above is preferably formed of an opaque material so as not to affect other adjacent segment displays when the light emitting device 130 emits light.

Then, a plurality of coupling screws 210 is screwed with the coupling groove 122b formed on the rear edge of the front case 122 through the main PCB 200.

In addition, when the case 120 is coupled to the front surface of the segment display PCB 110, the segment display 100 may be forward in each of the front diagonal directions of the front surface of the segment display PCB 110 to determine the coupling position. Positioning grooves 124a are formed at the rear corner position of the rear side case 124 relative to the crystal projection 112 and the engaging projection 112 is formed in a protruding position.

In addition to the configuration as described above, the segment display 100 according to the present invention is further provided with a moisture-proof gasket 220 between the main PCB 200 and the rear side of the front case 122 of the case 120 to the main PCB ( It is to prevent the penetration of water or moisture between the 200 and the rear of the front case 122 of the case 120.

In addition, the exposed surface of the main PCB 200 and the segment display PCB 110 may be coated to prevent moisture or moisture. At this time, as a coating method, first, a thermoplastic polymer (Polymer) as a special coating material in a solid state is pyrolyzed in a heating furnace and evaporated to a gaseous state in a vacuum to be changed. That is, the thermoplastic polymer in the solid state is pyrolyzed in a heating furnace, and is changed into a gas state in a vacuum to evaporate. {Vaporization (150 ℃) → Pyrolysis (680 ℃)}

After the thermoplastic polymer is pyrolyzed in a heating furnace and evaporated in a gaseous state in a vacuum, the thermoplastic polymer evaporated in the gaseous state is exposed on the exposed surfaces of the main PCB 200 and the segment display PCB 110. Deposit. At this time, a process of depositing a thermoplastic polymer evaporated in the gas state on the exposed surface of the main PCB 200 and the segment display PCB 110 is performed under vacuum.

After depositing a gaseous thermoplastic polymer on the exposed surfaces of the two PCBs 200 and 110, the temperature is lowered to form a gaseous state deposited on the exposed surfaces of the main PCB 200 and the segment display PCB 110. The thermoplastic polymer is solidified so that the exposed surface of the main PCB 200 and the segment display PCB 110 is coated by the thermoplastic polymer. {Deposit (25 ° C. to −70 ° C.)}

In the coating process as described above, the thermoplastic polymer (Polymer), which is a coating material of vaporization process, is in the form of a dimer molecule, and in the pyrolysis process (Pyrolysis (680 ° C.)), it is changed into a monomer form. In the case of solidification, the polymer is changed into a polymer form.

According to the present invention, the coating treatment technology can be arranged to pyrolyze a thermoplastic polymer in a solid state through a heating furnace to change it into a gaseous monomer in vacuum, and vacuum the monomer-type gas into a vacuum. The process of depositing on the exposed surface of the main PCB 200 and the segment display PCB 110 in the state and the monomer-type gas deposited on the exposed surface of the main PCB 200 and the segment display PCB 110 It is made by solidifying and coating process.

On the other hand, the segment display according to the present invention configured as described above, the case 120, when the damage or breakage of the elements inside, for example, the light emitting device 130, the case 120 is the segment display PCB (110) Can be repaired or replaced.

Hereinafter, the case 120 will be described in more detail. First, the front side case 122 is formed on the front surface of the segment display 100 according to the present invention to visually display the light from the outside through the light transmitting member 140. Make it recognizable.

First, the front side case 122 has a light transmitting member 140 is fixedly arranged in the '8' shape, the coupling grooves 122b are formed in the corner side of the rear surface, respectively. Through the coupling groove 122b is screwed through the main PCB 200 and the coupling screw 210.

On the other hand, the light transmitting member 140 is made of acrylic or optical fiber to focus the light so that it can be recognized from the outside, as shown in Figures 6, 7, 8, the front of the front side is wider than the rear side It was formed narrower, the front surface of the light transmitting member 140 to be more protruding than the front surface of the front case 122 to improve the visibility of the display of light.

The rear case 124 is integrally formed at the rear of the front case 122 and is provided on the light transmitting element 140 fixed to the front case 122 and the light emitting element installed on the segment display PCB 110. Will accommodate 130

As described above, the rear side case 124 has a plurality of partition walls so that the respective strokes of the light transmitting member 140 arranged as '8' in FIG. 4 may be divided and arranged in a separate accommodation space 128. It is divided by 126. Therefore, in FIG. 4 of the present invention, seven accommodation spaces 128 are formed by the edges of the plurality of partition walls 126 and the rear case 124.

As described above, when the plurality of accommodation spaces 128 are formed by the edges of the plurality of partitions 126 and the rear case 124, the case 120 is coupled to the front surface of the segment display PCB 110. The light emitting elements 130 arranged corresponding to each time of the transfer member 140 are accommodated in each receiving space 128 to correspond to the light transmitting member 140 of each stroke. As such, when the case 120 is coupled to the front surface of the segment display PCB 110, each accommodation space 128 is sealed and becomes dark as a closed room.

As described above, when the light emitting device 130 emits light in a dark state inside the accommodation space 128, the light is more brightly displayed to the outside through the light transmitting member 140. Thus, it can be seen that visibility is improved.

In addition, when the light emitting device 130 emits light in the accommodating space 128 in a dark state, the light collecting power of the light transmitting member 140 is further improved.

Installation of the segment display 100 configured as above is as follows. That is, in the case of installation, the segment display PCB 110 is electrically coupled to the main PCB 200, and then the positioning protrusion 112 and the rear case 124 of the segment display PCB 110 are electrically connected. In the state where the position of the case 120 is determined by matching the positioning grooves 124a, the coupling screw 210 is fastened to the coupling groove 122b of the rear side of the front case 122 by the coupling screw 210 through the rear surface of the may PCB 200. The case 120 is fixed to the front of the segment display PCB 110.

On the other hand, when replacing by combining the light emitting device 130, after removing the coupling screw 210 to separate the case 120 from the segment display PCB 110, the corresponding light emitting device 130 is found defective In this case, the case 120 may be coupled to the front surface of the segment display PCB 110 in the same order as in the case of the above installation.

The present invention is not limited to the above-described embodiments and can be carried out in various modifications within the scope of the technical idea of the present invention.

For example, although the segment display structure representing the numbers 0 to 9 has been described, the present invention is not limited thereto, and various modifications such as specific patterns or characters may be performed.

According to the present invention configured as described above, even if an abnormality of the segment display occurs, it is possible to easily replace or repair the corresponding parts to extend the service life of the segment display.

The second effect of the present invention can reduce the defective rate that can occur in the process of filling and solidifying the thermosetting resin in the case as in the prior art.

According to a third effect of the present invention, since the light emitting device is installed in the segment display PCB installed inside the case, the thermosetting resin is not filled and solidified, thereby reducing the manufacturing cost of the product and improving productivity.

A fourth effect of the present invention is to easily assemble the segment display by arranging the segment display PCB on the main PCB on the electroluminescent cover first and then attaching and detaching the case.

The fifth effect of the present invention is to make the rear side of the light transmitting member wider than the front side, while condensing the inside of the case into a separate accommodating space so that it is dark and condensed on the wide rear side of the light transmitting member in the dark state inside. As the light is emitted to the outside, the visibility is improved outdoors.

The sixth effect of the present invention is that the light inside the case can be emitted in a dark state by passing the spot (grain) phenomenon of the internal element through the medium of the light transmitting member, the light can be diffused smoothly.

Furthermore, the present invention has an effect of further improving the visibility of letters, symbols, and numbers by widening the viewing angle by allowing the light transmitting member to protrude more than the front surface of the case.

Claims (6)

A plurality of light emitting devices arranged in letters, symbols, and numbers to emit light by an applied power source, the light emitting device is provided on the front surface of the segment display PCB and the segment display PCB that the light emitting device is attached to the front In the segment display structure that consists of a case for accommodating the letters, numbers and symbols to the outside, The case has a front side case formed in the form of letters, symbols and numbers through the front and rear through the exit hole to form a front; The light is coupled from the rear side of the front case to the front side through the display hole, and the front side of the front case is coupled to protrude more than the front side of the front case to condense light emitted from the light emitting element through the rear side and radiate to the outside. Transmission member; And It is formed integrally with the rear of the front case, and comprises a rear side case having a plurality of partitions partitioned to accommodate the respective strokes of the light transmitting element and the corresponding light transmission element, respectively, The segment display PCB is arranged in the form of letters, symbols, and numbers and is detachable by attaching the case by mounting the case in a state of being electrically connected to the front surface of the main PCB of the light cover. Segment display structure, characterized in that only the light emitting element can be removed separately to replace. The light emitting device of claim 1, wherein a plurality of accommodation spaces in which the light emitting devices are accommodated are formed through partitions and edges formed on a rear side case of the case, and the light emitted from the light emitting devices in a dark state inside the accommodation spaces is formed. Segment display structure characterized in that the brightness of the light to be displayed more brightened by being able to be displayed to the outside through the light transmitting member. The segment display structure as claimed in claim 1, wherein the light transmitting member is formed to have a smaller width at the front side than at the rear side. The segment display structure according to any one of claims 1 to 3, wherein the material of the light transmitting member is acrylic or optical fiber. The segment display structure according to claim 4, wherein the front and rear exposed surfaces of the main PCB of the all-optical sign on which the segment display PCB is electrically connected to the front surface are formed with a moisture proof coating to moisture-proof the moisture. The segment display structure as claimed in claim 5, wherein the moisture-proofing coating layer is formed by depositing a monomer-type gas which is changed into a gas state by pyrolyzing a thermoplastic polymer in a solid state in a vacuum furnace.