JP2010212360A - Led light emitting member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED light emitting member, along with a method of manufacturing it, suitable for configuring an electronic display and a signboard having a main light volume radiation angle chiefly in diagonal direction, using an LED. <P>SOLUTION: Relating to an LED light emitting member 1, an LED 11 is arranged on a printed board 12 of oblong near rectangle. A current supply pattern for supplying electric power to turn on the LEDs, a current return pattern, and a control connection pattern for controlling illumination of LEDs that are to be included or not included, are arranged on two sides forming a pair or one side on end face of the oblong printed board 12. The LED board 12 for external connection is press-inserted for bonding into the internal space of a cylindrical holder 13 having a cut in length direction or a holder 13 formed by bending a plate material, in such manner as the holder 13 is pushed and expanded. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  It is a technology that houses LEDs and is used as lighting signs for road signboards, vehicle guidance displays, and electronic display members. In particular, small LEDs used for signboards and electronic displays that are displayed obliquely forward. The present invention relates to a light emitting member.

   Some conventional LED light emitting members are held in a holder using a fixing member that fixes a printed circuit board in which LEDs are arranged in the holder (see, for example, Patent Document 1). In addition, there is an example in which a printed circuit board on which LEDs are arranged is inserted into a holder and loaded using a cap (see, for example, Patent Document 2). Furthermore, in order to electronically display diagonally forward, there are those in which a huge number of LED lead wires are processed in advance, or those in which the irradiation direction is adjusted to a predetermined direction after completion (for example, see Non-Patent Document 3). .

   Hereinafter, a conventional LED light emitting member will be described. First, FIG. 12 shows an example similar to FIG. 2 of the Public Utility Model Publication No. Hei 4-74469, which has a structure for holding a printed circuit board in which LEDs are arranged in parallel on one side of a holder, so that many fixed resin materials are used. In order to handle the heat generated by light emission, the LED is cracked and cracked, and FIG. 13 is transparent to the front for weather resistance instead of reducing the amount of fixed resin as shown in FIG. Will be used. Furthermore, since it is not mechanically held in the holder prior to the fixing process of the printed circuit board on which the LEDs are arranged, it is necessary to apply and apply a fixing synthetic resin material, which is troublesome for the fixing work, and the optical axis direction of the LED Cannot be uniquely set, and the optical axis is adjusted after fixing.

  Further, in the case of FIG. 1 and FIG. 4 of Japanese Patent Application Laid-Open Publication No. 2006-147580, since the support 12 is a molded member, the fixing of the printed circuit board on which the LED is arranged is accompanied by the cap 24. May be arranged in the length direction of the LED light emitting member in order to display a large character, and the required dimension of the member corresponding to the cap is not allowed from the relationship of maintaining the interval between the adjacent LED light emitting members.

  Furthermore, FIG. 5 of Japanese Patent Application Laid-Open Publication No. 2006-155443 has a need to precisely adjust the direction of the LED after the LED light emitting member is completed for a large number of LEDs, which affects the productivity and, in some cases, the direction of the LED. Advanced measurement equipment is required for precise adjustment of direction.

Published Utility Model Publication Heisei 4-74469 (9 pages, Fig. 1 and Fig. 2) Published Patent Publication 2006-147580 (8 pages, FIGS. 1 and 4) Published Patent Publication 2006-155443 (page 10, FIG. 5)

  The LED light emitting member to be patented is an optical axis adjustment in the LED light emitting member having the optical axis in the front direction like the LED light emitting member of the conventional example, mainly in view of the characteristics applied to the signboard and electronic display for the oblique front. Is essentially done after completion, but the fixing solvent application work is divided in such a way that the fixing solvent is applied in the middle of the manufacturing process and the final confirmation and precision adjustment are performed after the fixing solvent is applied. To be implemented.

  Prior to the application or pouring operation of the fixing solvent, temporary fixing in the holder of the printed circuit board on which the LEDs are arranged is desired. However, in the structure that holds the front direction of the holder, a nail for temporary fixing is arranged in the holder. However, it is necessary to provide a temporary fixing mechanism with a screw, but a small LED light-emitting member has become a bottleneck for miniaturization.

  Further, when the cap 25 shown in the published patent publication 2006-147580 is used, there is an unnecessary gap in the arrangement of the LED light emitting members adjacent in the length direction, and the character spacing of the signboard and the electronic display is separated or irregular. Display.

  The LED light emitting member to be patented is mainly applied to an electronic display or signboard obliquely forward, so that the internal structure of the LED light emitting member itself is tilted, that is, the printed circuit board on which the LED is arranged is placed in the holder. Can be temporarily fixed using the inner diagonal structure of the holder, and the LED is arranged on a long and substantially quadrangular printed circuit board, and one end or a pair of end faces of the elongated printed circuit board is arranged. A current supply pattern for supplying power for lighting the LEDs on the two sides, a current return pattern, and a control connection pattern for controlling whether or not to include LED lighting are arranged, and the LED board for external connection is arranged in the length direction. Constructs an LED light-emitting member that is press-fitted and fixed so as to push the holder into the internal space of a holder formed by bending a cylindrical holder or plate having a notch. That.

  The LED has an elongated, substantially quadrilateral printed circuit board that is accommodated in a cylindrical holder having a notch, and the shape of the holder is a quadrilateral cylindrical shape with one ridge portion cut out. The LED light-emitting member that makes it possible to temporarily fix the printed board by using the elasticity of the holder is configured by pushing and spreading two diagonally opposite edges.

  Instead of the above-described method of forming a holder from a cylindrical body whose cross-section is cut off from a quadrilateral, a holder formed by bending a plate is opened with one ridge side part of the cylindrical quadrilateral. An LED light-emitting member that can temporarily fix the printed circuit board is configured using the elasticity of the holder similar to the holder whose cross section is substantially four deformations.

  In the holder having a structure in which one ridge line of the cylindrical body is cut off or a holder formed by bending a plate material, the angle formed between the two inner ridge sides and the attachment surface of the holder is the structure of the holder. In order to change the angle, it is necessary to change the structure of the holder, but using the elasticity of the holder included as a partial member that adjusts the angle with the holding auxiliary tool that abuts the inside of one ridge side An LED light-emitting member that enables temporary fixing of the printed board is configured.

  An LED light-emitting member that can temporarily fix the printed circuit board is configured using the elasticity of a holder having a structure in which one circular arc portion having a circular or elliptical cross section is cut out. Furthermore, since the holder has a circular or elliptical shape, there is a degree of freedom in the mounting direction of the holder, so that an LED light-emitting member that can be flexibly adjusted is configured.

  For the LED substrate to the holder, a method of holding a force by pushing a notch portion of the holder or an open portion of the plate material on two sides of the LED substrate to generate a holding force can be used.

  When the U-shaped and U-shaped heat sinks that sandwich the printed circuit board are sandwiched or welded to one or both of the longitudinal substrates of the LED circuit board and pressed into the holder, the LED board and the holder Therefore, an LED light-emitting member that can achieve a heat dissipation effect is formed.

  The LED light-emitting member to the holder is a synthetic resin member that can be strengthened, heat-dissipated, and waterproofed by inserting a LED substrate, forming a liquid or gel after temporary fixing, and solidifying after pouring or applying. The formed LED light emitting member is configured.

  Since the LED light-emitting member of the present invention enables a structure that eliminates the windshield, the exposed portion of the LED has an ultraviolet deterioration against the LED in order to reduce the ultraviolet deterioration of the synthetic resin constituting the head of the LED. An LED light emitting member is formed by applying a coating material having resistance.

  In the LED light-emitting member of the present invention, the main radiation direction from the LED is determined by design from the structure of the holder regardless of whether or not the holding assist tool is applied. Since adjustment is not required, an economical LED light-emitting member can be provided.

  Since the LED light-emitting member of the present invention is temporarily fixed by the elasticity of the holder itself, a small and light-weight LED light-emitting member can be configured, and by using metal for the holder, it can be used against any external force such as collision of flying objects. A strong signboard and display can be provided.

  The LED light-emitting member of the present invention can be formed in an elongated shape, and since the temporary fixing by the elastic force of the holder, the amount of the synthetic resin member to be applied and fixed is small, and therefore the influence of cracks and cracks on the LED Therefore, an economical LED light emitting member that eliminates the windshield and the external transparent cover can be formed by applying a coating agent that is less susceptible to ultraviolet deterioration.

  The present invention will be described with reference to FIGS. The LED light emitting member 1 is press-fitted into a holder 13 with a printed board 12 on which the LEDs 11 are arranged. Although there is a distance L1 between the two inner ridge lines of the holder, the width L2 of the printed circuit board 12 is slightly wider than L1 depending on the dimensions and material of the printed circuit board 12, and is set to a dimension L2 that can temporarily fix the printed circuit board 12.

  Although the overall structure of the signboard is omitted, an application example of the LED light emitting member 1 to the signboard will be described with reference to FIGS. 4 and 5. The LED light-emitting member 1 is fitted and fixed to an LED light-emitting member mounting clip 3 provided at a key point of the sign frame 2. Moreover, the wiring 14 to the LED light emitting member 1 is connected to a display control device (not shown) through the frame 2 of the signboard.

  As shown in FIG. 6, the holder 13 having a substantially square cross section has a zenith angle α from the bright spot A of the LED that applies a molding material having a square or rectangular cross section in the vicinity of one ridge, from 120 degrees to 180 degrees. The edge where the bright spot of the LED is visible from the outside is cut out and configured as a holder.

  As shown in FIG. 7, the holder made by molding the plate material has a zenith angle α from the bright spot A of the LED of 120 degrees to 180 degrees, and cuts and holds the edge where the bright spot of the LED can be seen from the outside. Configure as.

  The holder in which the vicinity of one ridge line of the molding material is cut out, or the holder in which the plate material is processed has a limitation on the width dimension L2 of the printed board on which the LED is arranged, and the dimensions of the two sides of the holder are different. As shown in FIG. 8, the main light quantity direction is θ2, which is different from θ1. Therefore, the main light amount direction θ3 from the LED light emitting member 1 can be changed by applying the holding assisting tool 17 as shown in FIG.

  In the holder 13 manufactured from a molding material and the holder 13 by processing a plate material, the main light amount direction θ1 or θ2 from the LED is determined by the structure of the holder, and it is difficult to adjust the details. However, when the cross-section of the retainer is approximately circular or elliptical, the mounting angle can be set freely when fixing with a U-shaped bolt, so the main light quantity direction can be changed, and the signage site It is possible to configure a signboard that enables fine adjustment to obtain a display effect peculiar to the work.

  The high-brightness LED 11 needs to supply a large current, and as a result, the temperature of the LED itself may increase. Since the temperature is transmitted to the printed circuit board 12 through the lead wire of the LED itself, a heat conduction pattern is provided on the printed pattern 121 on the long and narrow side of the printed circuit board 12, and the clip-shaped heat radiation fitting 38 is connected to the heat conduction film. By making the structure in contact with the pattern 121 or the structure to be welded and press-inserting the printed circuit board 12 to which the heat radiating metal fitting 38 is attached into the holder 13, the heat generated by the LED 12 can be released to the holder.

  The present invention is an LED light-emitting member 1 mainly intended to be applied to a signboard or an electronic display, but is intended to be applied to a robust structure, display in a small space, or a signboard. In the construction notice signboard at, the electronic display in the oblique direction with less jumping out to the road side can be applied to space-saving lighting and warning display, but the printed circuit board 12 on which the LED is arranged is press-inserted Later, when the holder is twisted at a certain angle and the printed circuit board 12 is fixed and the LED light-emitting member 1 is made, the LED light-emitting member 1 is hung and used to create a lighting effect that emits swaying light. Give me.

LED light emitting member according to the present invention Example of holding structure Side view of LED light emitting member according to the present invention Mounting structure of LED light emitting member according to the present invention Mounting side view of LED light emitting member according to the present invention Case example 1 Case 2 of holder Case 3 of holder Case 4 of holder Case 5 of holder LED light emitting member including heat dissipation measures Conventional LED light-emitting member Conventional LED light emitting member with windshield

DESCRIPTION OF SYMBOLS 1 LED light emission member 2 Signboard frame 3 LED light emission member attachment clip 4 LED light emission member 1 of a conventional example
5 LED light emitting member 2 of the conventional case
11, 21, 31, 51 LED
12, 22, 32, 52 Printed circuit board on which LED is arranged 121 Print pattern for heat radiation 13, 23, 33, 53 Holder 14 Wiring 15, 25, 35, 55 Synthetic resin for fixing 16, 26, 36 UV deterioration preventing agent 17 Holding auxiliary metal fittings 38 Heat radiating metal fittings A LED bright spot α A zenith angle with respect to A L1 Distance between two inner ridges before mounting the holder L2 Width of printed circuit board on which LED is arranged θ1 Cross section is substantially positive Main light emission angle θ2 Main light emission angle when the mounting surface of the holder is long θ3 Main light emission angle adjustable with the auxiliary holding bracket

Claims (9)

A current supply pattern, a current return pattern, and a power supply pattern for supplying power to light the LED on one side or a pair of sides of the end surface of the elongated printed board, the LEDs being disposed on the elongated substantially quadrilateral printed board A control connection pattern for performing LED lighting control is disposed, and an LED substrate for external connection is disposed in an internal space of a holder formed by bending a cylindrical holder or plate having a notch in the length direction. LED light-emitting member that has been press-fitted so as to spread out and fixed. The cylindrical holder having a notch according to claim 1 is a holder having a structure in which a cross section is a quadrilateral and one ridge portion is cut off. A holder formed by bending the plate material according to claim 1 is a holder formed by processing a plate material having a substantially quadrangular cross section with one ridge side portion of a cylindrical quadrilateral opened. The holder of Claim 2 and Claim 3 contains the holding | maintenance auxiliary tool contact | abutted inside one ridge side as a partial member in order to adhere the LED board of Claim 1. The cylindrical holder having a cutout according to claim 1 is a holder having a structure in which one circular arc portion having a circular or elliptical cross section is cut out. The LED substrate to the holder according to claim 1 is a method of holding a force to generate a holding force by applying a force that spreads a notch portion of the holder or an open portion of the plate material to two elongated sides of the LED substrate. The LED board according to claim 1 sandwiches a U-shaped or U-shaped radiating metal fitting that sandwiches the printed circuit board into one or both of the longitudinal substrates of the LED board, and the holder according to claim 1 to 6. LED light emitting member to be press-inserted. The LED light-emitting member to the holder of claim 1 is a synthetic resin member that is liquid or gel after insertion of the LED substrate, and that can be strengthened, heat radiation, and waterproof by a synthetic resin member that is solidified after pouring or applying. LED light emitting member. The LED light emitting member which gave the coating agent which has tolerance to the ultraviolet deterioration with respect to LED to the exposed part of LED of the LED light emitting member of Claim 1 and Claim 8.

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