KR20220121545A - How to make LED bar PCB capable of measuring and cutting length in 5mm units - Google Patents

Abstract

The present invention relates to a method for manufacturing an LED bar PCB (10) capable of measuring length in units of 5 mm and cutting in units of 5 mm. When manufacturing the LED bar PCB, a new 12V LED bar circuit diagram (150) and a new 24V LED bar circuit diagram (160) capable of emitting light in a PCB space within 5 mm are applied. When manufacturing the LED bar PCB (10), a cutting line (71) in 5 mm units and a length display unit (72) in units of 5 mm were marked in a silk screen printing process. An LED cathode PCB pad (115), which is a heat sink of an LED element (60), is electrically connected to a minus electrode pattern (116) by a length equal to the width of the heat sink pad. Using the LED bar PCB product (10) manufactured in this way, calculation to match the length by the length display function in 5mm units and saving of work time during product production and maintenance time savings are expected during production and installation of indirect lighting, LED bar module, and other interior lighting effects. It is possible to reduce separately customized LED bar product design time by free cutting function in 5mm units, inspection time to check the length of manufactured parts, working time for attaching and finishing LED bar, and rework time due to length mismatch, and to reduce production costs by rework or the like.

Description

{ How to make LED bar PCB capable of measuring and cutting length in 5mm units}

The present invention relates to a method for manufacturing an LED bar PCB capable of measuring the length in units of 5mm and cutting a fine length, and more specifically, to arrange the LED element and the resistance element for current control at 5mm intervals using a generally used LED. LED bar products that use 12VDC, 24VDC, 36VDC constant voltage power by designing the PCB and manufacturing the LED bar PCB by marking the length unit on the LED bar PCB and marking lines to check the length and instruct the cut part on the PCB every 5mm It relates to a method of manufacturing an LED bar PCB capable of measuring lengths in 5mm units and cutting fine lengths, which can save installation time and cost, as well as inconveniences and problems in construction due to discrepancy with space and panel length when installing interior and indirect lighting. .

Traditionally, in the field of interior and indirect lighting, slim mounting and various ?翩恥瓚? Neon lamps or T5 fluorescent lamps that can be expressed were used in the field of interior lighting, store panel lighting, and indirect lighting. Due to the increase, the use of LED bar products using LED, which is a safe semiconductor light emitting device, is increasing.

LED bar PCB products that are generally sold and used mainly use 3V LEDs, and 12V LED bar PCB products are 500mm long and have 30 LED structures (10 steps, 1 step = 50mm), 48 pieces (16 steps, 1 step) Stage = 31.25mm) and 24V products, 30 (5 stages, 1 stage = 100mm) and 48 units (8 stages, 62.5mm) are mainly used for interior and indirect lighting.

When LED bar PCB products are installed in interior and indirect lighting, LED bar PCB cutting units are very diverse, such as 33mm, 50mm, 60cm, 100mm, and 200mm, and LED bar products manufactured using LED bar PCB are 300mm, 500mm , 600mm, 700mm, 900mm, 1000mm, 1200mm, etc., but the length of the LED bar PCB product that can be used for each LED bar product is 495mm, 497mm, 500mm, etc. , it is difficult to make fine cutting with a cutting length of less than 10mm, so it is necessary to investigate the lighting installation space and effect in advance when manufacturing and installing LED bar finished products, interior and indirect lighting. There were problems such as performing the installation work again.

In this regard, Korean Patent Laid-Open Patent Publication No. 10-2020-0044824 (published on April 29, 2020: hereinafter abbreviated as 'Patent Document 1') discloses a technology related to a cuttable LED strip.

According to Patent Document 1, the LED bar strip segment (cuttable LED bar part) has no choice but to be cut to a length that is a multiple of the lengths (eg, 30Cm). The LED strip including the current radiation circuit (U1, Q1, Rs1) and the switching element (Q2) that can be connected in parallel to the power bus terminals (power pad, reference voltage pad, ground pad) on the length of the LED strip is connected to the power bus terminal. A connection method was presented.

In this regard, Korean Patent Laid-Open No. 10-2135656 (published on July 149, 2020: hereinafter abbreviated as 'Patent Document 2') discloses a technology related to an LED bar capable of length adjustment.

According to Patent Document 2, the LED bar product including the heat sink has a standardized length and a positive terminal and a negative terminal are installed at the end, so there is a problem in that it is difficult to adjust the length of the LED bar. The LED bar can be cut to fit the length by attaching electrode plates (first electrode plate, second national plate) to the upper and lower surfaces of the LED element while having a cut surface. The technology that can do this is presented, but it is not possible to present a technology capable of fine length adjustment of 10mm or less.

In this regard, Republic of Korea Patent Publication No. 10-1966179 (published on April 5, 2019: hereinafter abbreviated as 'Patent Document 3') discloses a technology related to an LED module device for reforming.

According to Patent Document 3, a unit module equipped with a plurality of LED chips and a connector for power connection is continuously formed to form an LED module substrate, and a cutting line is marked between the unit modules so that it can be cut to a desired length and used. , a solder connection part is formed on the unit module connection part so that the unit module can be additionally connected and used, and it can be used by coupling a heat sink to the back side of the LED module board and spaced apart from the upper surface of the luminaire body using a clip It is configured so that it can be installed as a light source, so when replacing the light source of an existing luminaire with an LED, it presents a technology that can be easily installed by adjusting the length of the LED module board according to the size of the luminaire.

Publication of KR 10-2020-0044824 No. A 2020.04.29 Announcement of KR 10-2135656 B1 2020.07.14 Announcement of KR 10-1567035 B1 2015.11.10

Therefore, the present invention has been devised to solve the above problem, and the present invention is a 5mm unit by designing a current limiting circuit design using a resistor and a PCB pattern using a structure capable of emitting light in an LED device unit of an LED bar PCB that can be used in general. It is manufactured so that it can be cut in minute length units, and the 5mm unit cut line and length are marked on the LED bar PCB so that the length of the LED bar can be checked. This is to provide a new 12V LED bar circuit and a new 24V LED bar circuit and LED bar PCB product that can reduce the installation time and cost increase due to rework, installation errors, and LED bar PCB design methods.

One embodiment of the present invention for achieving the above object is a design of a pattern including a current limiting circuit using a resistor of a structure that allows light emission and cutting in units of LED elements, and a display that can be cut in units of 5 mm on the upper surface of the PCB. An LED bar PCB with an LED element and a resistive element for current control attached to a PCB product with a number printed on silk in 5mm units that includes a shear wire and electrode pads spaced 5mm apart,

It is an LED bar PCB product that can cut each LED element at 5mm intervals throughout the entire LED bar PCB and includes a length measurement function in 5mm units.

Another embodiment of the present invention for achieving the above object is (a) a device unit LED driving circuit including a current limiting circuit using a resistor, (b) a PCB pattern design in which device unit cutting is possible and heat generation characteristics are improved , (c) LED bar PCB including a 5mm interval grid line on the upper surface of the PCB for length measurement and confirmation and a silk display method for numbers in 5mm units,

This is an LED bar PCB manufacturing method that can cut each LED element in units of 5 mm and includes a length measurement function in units of 5 mm.

According to the present invention, by providing a cutting line (solid line) for convenient cutting at an interval of 5 mm to the LED bar PCB using the new 12V LED bar circuit diagram and the new 24V LED bar circuit diagram proposed newly, the LED bar capable of fine cutting in units of 5 mm Since it is possible to manufacture PCB products, it has the advantage of simplifying the installation of all interior channels, display cases, and indirect lighting with the fine cutting function in units of 5mm.

In addition, the present invention has a number printed on the upper part of the LED bar product that shows the length in 5mm units, so that when manufacturing interior channels and interior indirect lighting, it shortens the writing time of lighting installation design drawings and shortens the selection time of the LED bar, and the length of the LED bar construction is poor It has the advantage of reducing manufacturing cost and maintenance cost by shortening all working time that occurs while installing and manufacturing LED bars such as shortening of rework time according to

In addition, it is possible to produce various letters, sentences, and shapes using 5mm unit LED blocks, and it is possible to work with ideas of ordinary people who lack professionalism and experience. There are advantages to using it.

1 is a perspective view illustrating an excerpted overall view of an LED bar PCB product capable of measuring length in units of 5 mm and fine cutting at intervals of 5 mm according to an embodiment of the present invention.
2 is an enlarged view illustrating an LED bar PCB printed with cut lines at intervals of 5 mm and length marks in units of 5 mm according to the present invention.
3 is a perspective view illustrating a cross-section of an LED bar PCB structure according to an embodiment of the present invention.
4 is a perspective view illustrating an excerpted overall view of an LED bar PCB pattern capable of measuring length in units of 5 mm and micro-cutting at intervals of 5 mm according to an embodiment of the present invention.
5 is an enlarged view illustrating the arrangement of components, electrodes, and wiring of the LED bar PCB product capable of measuring length in units of 5 mm and micro-cutting at intervals of 5 mm according to the present invention.
6 is a diagram illustrating a new 12V LED bar circuit diagram and a novel 24V LED bar circuit diagram applied to an LED bar PCB capable of measuring length in 5mm units and micro-cutting at intervals of 5mm according to the present invention.

Hereinafter, the overall configuration and operation of an LED bar PCB product capable of 5 mm unit length measurement function and 5 mm unit cutting and a manufacturing method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, it is understood that since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, there may be various equivalents and modifications that can be substituted for them at the time of the present application. shall.

1 is a perspective view illustrating an excerpted LED bar PCB product capable of length measurement and micro-cutting in 5 mm units according to an embodiment of the present invention, and FIG. It is an enlarged view of the LED bar PCB, and FIG. 3 is an exemplary view for explaining the structure of the LED bar PCB capable of measuring the length of 5 mm and fine cutting.

1, 2 and 3, the LED bar PCB according to an embodiment of the present invention, the LED bar PCB 10 capable of measuring length in 5mm units and cutting at intervals of 5mm is a novel 12V circuit diagram 150, new According to the 24V circuit diagram 160, in series with the positive power electrode pad 20 of the LED bar, the primary resistor 40 for current control, the secondary resistor 50 for current control, the LED element 60, and the negative power electrode pad 30 ) is sequentially connected, and it can be composed of n parallel structures, and one LED driving circuit is implemented on the PCB to be placed on the PCB at intervals of 5mm.

The length measurement and cut line display detail 70, which is an enlarged view of the LED bar PCB 10 on which the length display unit of 5 mm unit and the cut line at 5 mm intervals are printed, is 5 mm from the structure 80 of the generally manufactured LED bar PCB. The 5mm interval cutting line display unit 71, which is a part that can be cut at intervals, and the 5mm length unit display unit 72 indicating the length in 5mm units are printed in the TOP silkscreen area of the PCB structure using a silkscreen paint. The bar PCB 10 is manufactured. The LED bar PCB 10 produced in this way can measure the length in units of 5mm, and can be cut at intervals of 5mm, so rework due to work mistakes along the length in the production of indirect lighting products using the LED bar, indirect lighting installation and construction Alternatively, it is possible to solve the problem of having to re-construct, and it is possible to obtain the advantage of saving time and manufacturing cost, and also there is an advantage that repair time and cost can be reduced because it can be repaired only partially in maintenance.

4 is a perspective view of the structure of the pattern 82 of the LED bar PCB capable of measuring length in units of 5 mm and fine cutting at intervals of 5 mm, and FIG. 5 is a detailed view of the PCB pattern. The PCB pattern of the newly proposed LED bar PCB(10) product can be implemented in the same pattern for 12V products and 24V products, and the new 12V LED bar circuit diagram 150 and the new 24V LED bar circuit diagram that enable LED light-emitting operation within 5mm intervals (160) was applied. In order to compose the pattern of the circuit diagram that can operate within 5 mm intervals, the positive electrode PCB pattern 113 is electrically connected from the positive power PCB pad 111 at the top, and the resistor 1 PCB pad 118 for current control and the The current control resistor 2 PCB pad 119 is electrically connected in series to the positive electrode pad, and the current control resistor 2 40 is connected to the LED anode electrode PCB pad 114 of the LED device 60 in series. and the LED cathode PCB pad 115, which is a heat sink of the LED element 60, is electrically connected as wide as the maximum width of the negative power electrode pad 116 to reduce the resistance of the electrical connection pattern to a minimum. The electrode PCB pattern 116 is used as a heat sink to disperse heat generated by the LED pattern LED element 60 to increase the lifespan of the LED element 60 .

In general LED bar products, the size of the pad connected to the heat sink of the LED device is insufficient in the PCB routing area 82, so that a sufficient heat dissipation effect cannot be secured, thereby shortening the lifespan of the LED device and the LED bar product. The PCB (10) product distributes the current control resistor 1 (40) and the current control resistor 2 (50) in series and arranges them, and the heat sink of the LED element 60 is placed on the negative power PCB pad 112 with a relatively large area. The life and safety of the LED device 60 and the LED bar PCB product 10 can be increased by manufacturing a PCB pattern to dissipate the heat generated by the LED device 60 by directly connecting electrically so that the resistance is reduced as much as possible.

The PCB structure capable of measuring and cutting 5mm length of the present invention can be applied to a 12V LED bar PCB, a 24V LED bar PCB, and a 36V LED bar, respectively.

According to the manufacturing method of the LED bar PCB product capable of 5mm unit measurement and 5mm shred cutting according to the present invention, it is possible to improve the life span reduction due to deterioration of the LED element of the generally used 12V LED bar and 24V LED bar products, The 5mm unit distance measurement function reduces the time using the length measuring tool and writing tool used to produce indirect lighting, interior design, LED design, and picture frames, and the convenient cutting function at 5mm intervals allows for free cutting. You can get the advantages of reducing working time, saving rework time, and saving maintenance time.

As described above, although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments, which are various modifications and Transformation is possible. Accordingly, the spirit of the present invention should be understood only by the claims described below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

10 : PCB capable of measuring and cutting length in 5mm units
20: positive power electrode pad 30: negative power electrode pad
40: resistance for current control 2 50: resistance for current control 1
60: LED element 70: length measurement and cut line display detail
71: 5mm interval cutting line display unit 72: 5mm length unit printing display unit
73: cutting line via hole 80: PCB structure
81 : TOP Silkscreen Plan 82 : TOP Routing (Copper) Plan
100: 5mm unit length measurement and cuttable PCB pattern diagram
110: PCB pattern detail drawing
111: positive power PCB pad 112: negative power PCB pad
113: positive electrode PCB pattern 114: LED anode electrode PCB pattern
115: LED cathode PCB pattern 116: negative electrode PCB pattern
118: resistance for current control 1 PCB pad 119: resistance for current control 2 PCB pad
130: Typical 12V LED Bar Schematic 140: Typical 24V LED Bar Schematic
150: new 12V LED bar circuit diagram 160: new 24V LED bar circuit diagram

Claims (5)

LED bar PCB (10) to which a new 12V LED bar circuit diagram (150), a new 24V LED bar circuit diagram (160) that can emit light in a PCB space of less than 5mm is applied;
In LED bar PCB manufacturing, by applying a new 12V LED bar PCB circuit or 24V LED circuit, it is possible to emit and drive one LED element 60 between the cut lines at 5mm intervals, and the cathode connection line of the LED element 60 is negative. LED bar PCB (10) electrically connected to the power supply.
According to claim 1, wherein the 5mm interval cutting line display portion 71,
A cut line display unit 71 at intervals of 5 mm formed at intervals of 5 mm by a printing process using a silk screen paint in the area of the TOP silk screen 81 of the LED bar PCB structure.
According to claim 1, wherein the 5mm length unit display unit 72,
5mm unit length display unit 72 indicating the length of 5mm unit formed by the printing process using silkscreen paint in the TOP silkscreen 81 area of the LED bar PCB structure
According to claim 1, wherein the new 12V LED bar circuit diagram 150, the new 24V LED bar circuit diagram 160 is.
It is an LED light emitting circuit capable of emitting light of the LED element 60 within an interval of 5 mm and fine cutting at an interval of 5 mm, and the negative electrode PCB pattern 116 is used as a heat sink to improve the lifespan and heat dissipation performance of the LED element 60 LED light emitting circuit diagram
According to claim 4, PCB pattern diagram 110 to which the new 12V LED bar circuit diagram 150, the new 24V LED bar circuit diagram 160 are applied,
In Fig. 5, the LED cathode PCB which is an LED heat dissipation pad so as to be transferred to the negative electrode PCB pattern 116 of the LED bar PCB 10 in order to increase the thermal conductivity of the LED device 60 in order to improve the lifespan and heat dissipation performance of the LED device. PCB pattern diagram 110 configured to connect to the negative electrode PCB pattern 116 with the maximum width of the pad 115

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