JP4888233B2 - Light emitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting device which is easily laid on a fitting plate and also adaptively changed in position of fitting to the fitting plate with ease. <P>SOLUTION: A plurality of light emission units 1 are connected by a flexible electric wire 2, and inserted into individual window holes 61 penetrating the fitting plate 60 from the rear side of the fitting plate 60 to be fitted. Each light emission unit 1 includes an LED 10 as a solid light emitting element; a unit body 40 covering the LED 10, a mounting board 20, a portion of the electric wire 2, the unit body 40 being characterized in that an optical lens (light guide-out part) 30 inserted into a window hole 61 to project light emitted by the LED 10 to the outside is formed of a light-transmissive material; and two fitting legs 43 which are projected from the unit body 40 toward the fitting plate 60 and can elastically deform toward the optical lens 30, each fitting leg 43 is characterized in that a lock claw 43 inserted and locked in a coupling hole 63 penetrating a peripheral part of the window hole 61 is formed at a tip part. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a light emitting device used as a light source of a display device such as a signboard, a sign, and a sign.

  Conventionally, as shown in FIG. 16, a bullet-shaped LED 310 is housed in a light-transmitting small container 320 as a light-emitting device that can handle arbitrary characters and figures and can be reduced in weight. There has been proposed a light emitting device 300 in which a plurality of light emitting units 301 filled with a translucent resin in 320 are appropriately connected by lead wires 302 (see, for example, Patent Document 1).

  The light emitting device 300 disclosed in Patent Document 1 has an advantage that it can handle various characters because the plurality of light emitting units 301 are connected by the lead wires 302.

  In addition, as a light-emitting device capable of handling various characters, a device in which a plurality of light-emitting units appropriately connected by lead wires is attached to a mounting plate by a fixing screw has been proposed. There is a problem that it takes time for construction, and it takes time to change the mounting position of the light emitting unit.

Conventionally, as a socket for attaching the LED to the mounting plate, as shown in FIG. 17, the front end portion has a flange portion 511 whose rear surface abuts on the peripheral portion of the window hole 401 penetrating the mounting plate 400. A cylindrical holder 510 is inserted into the window hole 401 from the front side of the mounting plate 400 and a bullet-shaped LED 310 is inserted from the rear side of the mounting plate 400, and is detachably attached to the holder 510 from the rear side of the mounting plate 400. A cap 520 that sandwiches the collar portion of the LED 310, and an annular washer 530 that is interposed between the flange 521 provided at the front end of the cap 520 and the rear surface of the mounting plate 400 is proposed. (For example, refer to Patent Document 2).
JP 2003-84694 A (paragraphs [0014]-[0015] and FIG. 2) JP 2004-79974 A (paragraphs [0011]-[0018] and FIGS. 1 and 3)

  By the way, the light-emitting device 300 having the configuration shown in FIG. 16 disclosed in Patent Document 1 needs to attach each light-emitting unit 301 to the rear surface of a mounting plate made of a light-transmitting material with an adhesive during construction. In addition, it is difficult to change the mounting position of the light emitting unit 301 after the light emitting unit 301 is attached to the mounting plate. In addition, the light emitting unit 301 is detached from the mounting plate due to aged deterioration of the adhesive joint. There was also a concern of being separated.

  Further, in the light emitting unit composed of the socket and the bullet-type LED 310 disclosed in Patent Document 2, the work from the front side and the work from the rear side of the mounting plate 400 are necessary at the time of construction. The work is troublesome, and particularly when the size of the mounting plate 400 is large, the construction work takes a long time. In addition, when changing the mounting position of the light emitting unit, it is necessary to work from the front and rear of the mounting plate 400, which is troublesome.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a light emitting device that can be easily applied to a mounting plate and can easily cope with a change in a mounting position on the mounting plate. .

The invention according to claim 1 is a light emitting device in which a plurality of light emitting units are connected by flexible wires, and each light emitting unit is inserted and attached from the rear surface side of the mounting plate to each separate window hole penetrating the mounting plate. The light emitting unit is a unit body that covers the solid state light emitting element and at least a part of the solid state light emitting element and the electric wire electrically connected to the solid state light emitting element, and is inserted into the window hole and emitted from the solid state light emitting element. The unit piece is a rear surface of the unit body, which consists of a unit body with a light extraction part made of a translucent material that emits light to the outside and a U-shaped leaf spring that attaches the unit body to the mounting plate. A notch is formed on the side surface of the unit body along the front-rear direction so that both leg pieces of the fixing spring can be displaced to the side surface side of the unit body. , Fixing spring has a locking claw to be locked to the peripheral portion of the window opening in the front side of the mounting plate to the front end portion of the both leg pieces, the unit body is a plan view a square shape, fixed A leg portion having a width dimension substantially equal to the distance between both leg pieces of the spring and a part having a width dimension shorter than the distance between the leg pieces of the fixing spring, the length of the diagonal line being the leg pieces of the fixing spring; It is characterized in that each corner portion is formed in a substantially planar shape having a width dimension substantially equal to the width dimension of the fixing spring .

According to the present invention, the fixing spring is provided, which is composed of a U-shaped leaf spring for attaching the unit body to the mounting plate, and is arranged in such a manner that the central piece connecting both leg pieces contacts the rear surface of the unit body. A notch is formed in the side surface along the front-rear direction so that both leg pieces of the fixing spring can be displaced to the side of the unit body, and the fixing spring has a window hole on the front side of the mounting plate at the front end of both leg pieces. When the light emitting unit is attached to the mounting plate, the light springs of the unit body are placed in a state in which both leg pieces of the fixing spring are displaced to the side of the unit body. Insert the take-out part and the tip of both leg pieces of the fixing spring into the window hole from the rear side of the mounting plate, and then use the spring force of the fixing spring to lock the claw at the tip of both leg pieces to the front side of the mounting plate By locking it to the perimeter of the window hole with Since it can be attached to the attachment plate, it is easy to install on the attachment plate, and the light emitting units are connected to each other by flexible wires, so the mounting position of the light emitting unit on the attachment plate is changed. For this reason, it is only necessary to move the light emitting unit to the rear of the mounting plate with both leg pieces of the fixing spring displaced to the side of the unit body, so that it is easy to change the mounting position of the light emitting unit on the mounting plate. It is possible. Further, by setting the total length of the electric wires between the light emitting units to be longer than the arrangement pitch of the window holes in the mounting plate, there is an advantage that the arrangement density of the light emitting units on the mounting plate can be easily changed. is there. Also, when installing the light emitting unit to the mounting plate, the light extraction of the unit body is performed with the fixing spring displaced to the unit body side at a part having a width shorter than the distance between the leg pieces of the fixing spring in the unit body. And the front end of both leg pieces of the fixing spring are inserted into the window hole from the rear side of the mounting plate, and the locking claw at the front end of both leg pieces is inserted into the window hole on the front side of the mounting plate by the spring force of the fixing spring. So that the unit body can be rotated so that a portion of the unit body approximately equal to the distance between the leg pieces of the fixing spring is clamped by the fixing spring. By doing so, it is possible to prevent the fixing spring from being displaced toward the unit body by an external force, so that the light emitting unit can be reliably fixed to the mounting plate. In addition, when removing the light emitting unit, it is possible to dispose the light emitting unit without requiring a special tool because the fixing spring can be displaced to the unit body side simply by rotating the unit body again. It can be done easily. Further, after the light emitting unit is attached to the mounting plate, when the unit body is rotated and a portion approximately equal to the distance between the two leg pieces of the fixing spring in the unit body is clamped by the fixing spring, Since the fixing spring is disposed at the corner, the fixing spring can be easily positioned.

According to a second aspect of the present invention, in the first aspect of the present invention, the fixing spring and the unit body are each provided with a fixing means and a fixed means for fixing each other , and the fixing means includes both legs of the fixing spring. A protrusion provided on the inner surface of the piece and protruding toward the unit body, wherein the fixed means is a fitting part provided at a corner of the unit body and into which the protrusion is fitted .

  According to the present invention, after attaching the light emitting unit to the mounting plate, the unit body is rotated, and when the portion approximately equal to the distance between both leg pieces of the fixing spring in the unit body is clamped by the fixing spring, Since the spring and the unit body can be fixed to each other, the light emitting unit can be securely fixed by the mounting plate.

According to the first and second aspects of the invention, there is an effect that it is easy to construct the mounting plate and can easily cope with a change in the mounting position on the mounting plate.

(Embodiment 1)
Hereinafter, the light-emitting device of this embodiment will be described with reference to FIGS.

  The light-emitting device of this embodiment is used as a light source of a display device such as a signboard, a sign, and a sign, for example, and a plurality (27 in this embodiment) of light-emitting units 1 are formed by flexible electric wires 2. Each connected light emitting unit 1 is inserted and attached from the rear surface side of the mounting plate 60 to each separate window hole 61 provided through the mounting plate 60. In the light emitting device of this embodiment, the connection relationship is defined so that a plurality of light emitting units 1 are electrically connected in series, and a power supply circuit unit 6 is connected to the series circuit of the plurality of light emitting units 1. It is designed to supply power. Here, the power supply circuit unit 6 emits light by using a rectifier circuit composed of a diode bridge that rectifies and smoothes the AC output of an AC power supply such as a commercial power supply, a smoothing capacitor that smoothes the output of the rectifier circuit, and the output of the smoothing capacitor as a power source. A circuit board formed with a constant current circuit for supplying a predetermined constant current to the apparatus, and a connector (hereinafter referred to as a mating connector) is connected to the ends of a pair of electric wires 7 and 7 connected to the output side of the constant current circuit 8) is provided. On the other hand, the light emitting device is provided with a connector 3 that is detachably connected to the mating connector 8 at the ends of the electric wires 2 and 2 at both ends of the series circuit of the plurality of light emitting units 1. Here, waterproof connectors are used for the mating connector 8 and the connector 3, respectively.

  The light emitting unit 1 includes an LED 10, a rectangular board-like mounting board 20 on which the LED 10 is mounted and the above-described electric wire 2 is appropriately connected, and a unit body 40 that covers the LED 10, the mounting board 20, and a part of each electric wire 2. It has.

  The LED 10 includes an LED chip 11 that emits blue light, and a package body 12 made of ceramic (for example, alumina) having a housing recess 13 that houses the LED chip 11 on one surface. An external connection electrode (not shown) is provided on the other surface, and the external connection electrode and the conductor pattern (not shown) of the mounting substrate 20 are electrically connected via a joint (not shown) made of solder. Connected. The LED chip 11 is formed in a rectangular plate shape. Further, the outer peripheral shape of the package body 12 is a rectangular shape, and the storage recess 13 in the package body 12 is opened in a circular shape, and the opening area gradually increases as the distance from the inner bottom surface increases. The reflecting surface which reflects the light radiated | emitted from 11 to the side to the front is comprised. In addition, the LED 10 has a sealing portion (not shown) in which the LED chip 11 housed in the housing recess 13 of the package body 12 is made of a light-transmitting sealing resin (for example, silicone resin, acrylic resin, etc.). It is sealed.

  The mounting board 20 is configured by a printed wiring board in which an appropriate conductor pattern is formed on an insulating base material made of glass epoxy resin or the like, and is a surface-mounted Zener diode ZD connected in reverse parallel to the LED 10 and the LED 10. Has been implemented. Further, the mounting substrate 20 has two through-hole wirings for connecting the above-described flexible electric wires 2 at the left and right ends in FIG. A land 24 having a circular outer periphery is formed around the hole. Here, of the four lands 24 formed on the mounting substrate 20, the external connection electrode of the LED 10 is connected to the upper left land 24 and the upper right land 24 in FIG. The LED 10 is inserted in the electric path between the upper right land 24), and the lower left land 24 and the lower right land 24 in FIG. 2A are short-circuited for feed wiring.

  As the electric wire 2 described above, an electric wire in which a single core wire is covered with an insulating coating is used. Specifically, electric wires with high heat resistance and excellent corrosion resistance are used, such as fluororesin-coated copper wires (for example, Fulbon electric wires) in which the core wire is made of copper wire and the insulation coating is made of a fluororesin film. The copper wire portion exposed by peeling off the fluororesin film is inserted into the through hole from the back surface side of the mounting substrate 20 and joined to the land 24 by the solder portion 26 made of solder on the front surface side of the mounting substrate 20.

  The unit body 40 includes an optical lens 30 that is disposed on the light extraction surface side of the LED 10 and controls a light distribution of light emitted from the LED 10 (for example, acrylic resin), the LED 10 and the mounting substrate. 20 and a part of the optical lens 30 and a body main body 41 made of synthetic resin obtained by molding a part of each electric wire 2. Therefore, in the light emitting device of the present embodiment, a desired light distribution can be obtained by the optical lens 30. Therefore, if a plurality of types having different light distribution characteristics are prepared in advance as the optical lens 30 at the time of manufacture, the optical lens The variation of the product can be increased only by changing 30 and it is possible to easily cope with the change of the arrangement density on the mounting plate 60. In the present embodiment, the LED 10 constitutes a solid light-emitting element, and the optical lens 30 is inserted into the window hole 61 of the mounting plate 60 and emits light emitted from the solid light-emitting element to the outside. Is configured.

  The optical lens 30 is a molded product of a light-transmitting material (for example, acrylic resin) excellent in weather resistance, and is formed in a columnar shape (in this embodiment, a cylindrical shape), and the optical axis coincides with the LED 10. It is arranged so as to overlap the LED 10 in a form. Here, the optical lens 30 has a flange 31 provided continuously and integrally at one end in the optical axis direction, and the flange 31 is embedded in the body main body 41 so that it does not fall off from the body main body 41. Yes. Further, the optical lens 30 is set such that the thickness dimension along the optical axis direction is larger than the thickness dimension of the mounting plate 60, and the other end portion in the optical axis direction is forward of the plane including the front surface of the mounting plate 60. It is attached to the mounting plate 60 in a protruding manner.

  By the way, as a synthetic resin of the body main body 41, it is formed using the white synthetic resin (for example, polyester) which has elasticity and was excellent in corrosion resistance and heat resistance. Here, the body main body 41 is formed in a rectangular parallelepiped shape, and two bushings 42 through which the electric wires 2 connected to the mounting substrate 20 are inserted, and a plurality of (this embodiment) to be attached to the attachment plate 60. In the form, two mounting legs 43 are formed continuously and integrally. Here, in the body main body 40, the bushing portions 42 project from two side surfaces parallel to each other among the four side surfaces so that the two bushing portions 42 and the mounting substrate 20 are aligned, and the remaining 2 A mounting leg 43 projects from each of the two side surfaces. In addition, in the light emitting unit 1 in this embodiment, since the body main body 41 and the bushing part 42 are continuously formed integrally, it can improve waterproofness, and also bent or pulled the electric wire 2 at the time of construction etc. At this time, the stress applied to the solder portion 26 joining the electric wire 2 and the mounting substrate 20 can be reduced, and the reliability is improved. Moreover, since the fluororesin-coated electric wire is used as the electric wire 2 as described above, the electric wire 2 and the bushing portion 42 are bonded by melting the adhesive film formed on the surface of the fluororesin film when the body main body 41 is molded. Adhesion can be achieved and waterproofness can be enhanced. Moreover, in this embodiment, since the annular recessed part is formed over the perimeter of the circumferential direction of the outer peripheral surface of the bushing part 42, the bushing part 42 is easy to elastically deform. Further, in the light emitting unit 1 according to the present embodiment, since the tension direction of the electric wire 2 and the extending direction of the attachment leg 43 are substantially perpendicular (the direction is substantially orthogonal), the electric wire 2 is attached to the attachment plate 60. Even if it is pulled, there is an effect that the mounting leg 43 is difficult to come off from the mounting plate 60.

By the way, in the light emitting unit 1 according to the present embodiment, the above-described two mounting legs 43 protrude from the unit body 40 toward the mounting plate 60 and can be elastically deformed toward the optical lens 30 side. A locking claw 43a inserted and locked in a circular coupling hole 63 penetrating in the vicinity of the window hole 61 of the mounting plate 60 is provided continuously on the part. In short, the locking claw 43a can be displaced in a plane intersecting the front-rear direction of the unit body 40. Each attachment leg 43 is formed with an elongated hole 43b along the front-rear direction of the unit body 40, and is easily elastically deformed.

  In the mounting plate 60, the inner diameter dimension of the window hole 61 is set to be slightly larger than the outer diameter dimension of the optical lens 30, the inner diameter dimension of the coupling hole 63 is smaller than the inner diameter dimension of the window hole 61, and the mounting leg 43 is engaged. The dimensions are set such that the pawl 43a can be inserted and locked. Here, the mounting plate 60 is formed by processing an aluminum plate, and as shown in FIG. 4, a rectangular plate-like display portion 60a in which a plurality of window holes 61 are arranged in a two-dimensional array. And side plate portions 60b, 60b extending rearward from both upper and lower edges of the display portion 60a. As shown in FIG. 5, an assembly screw (not shown) is attached to a rectangular parallelepiped box main body 70 having a front opening. ) To be combined. The box body 70 is formed by processing a steel plate, and is formed in a shape in which a side plate portion 70b is projected forward over the entire outer periphery of the rectangular plate-like back plate portion 70a. A circular wire insertion hole 73 is formed in 70a. Further, the mounting plate 60 and the box body 70 are glossy with a white paint on the surface thereof, so that the corrosion resistance is enhanced and the visible light is reflected. The shapes of the mounting plate 60 and the box body 70 are not particularly limited.

In the light emitting device of the present embodiment described above, each light emitting unit 1 is coupled to the unit body 40 so as to protrude toward the mounting plate 60 and be elastically deformable toward the optical lens 30 and penetrate the vicinity of the window hole 61. Since the two mounting legs 43 having the locking claws 43 a inserted and locked in the holes 63 are provided, the mounting legs 43 are elastically moved toward the side surface of the optical lens 30 when the light emitting unit 1 is mounted on the mounting plate 60. In a deformed state, the optical lens 30 of the unit body 40 is inserted into the window hole 61, and the locking claws 43a of the mounting legs 43 are inserted into the coupling holes 63, so that the locking claws 43a are placed around the coupling holes 63. Since it can be attached to the attachment plate 60 by being locked, it can be easily applied to the attachment plate 60. 6A shows a state before the light emitting unit 1 is attached to the mounting plate 60, and FIG. 6B shows a state where the light emitting unit 1 is attached to the mounting plate 60.

  Moreover, in the light emitting device of the present embodiment, since the light emitting units 1 are connected to each other by the flexible electric wire 2, when changing the mounting position on the mounting plate 60, each mounting of the desired light emitting unit 1 is performed. Since the light emitting unit 1 has only to be moved to the rear of the mounting plate 60 in a state where the legs 43 are elastically deformed to the side surface side of the optical lens 30, it is possible to easily cope with a change in the mounting position of the light emitting unit 1 on the mounting plate 60. Is possible. In short, the light emitting device of this embodiment can attach each light emitting unit 1 to the mounting plate 60 detachably from one direction without using a tool such as a driver, an adhesive, a dedicated socket, or the like. The construction time can be greatly shortened. Moreover, the arrangement density of the light emitting units 1 on the mounting plate 60 can be easily changed by setting the total length of the electric wires between the light emitting units 1 longer than the arrangement pitch of the window holes 61 in the mounting plate 60. There is an advantage of becoming.

  In the light emitting device of this embodiment, each light emitting unit 1 includes two mounting legs 43, but the number of mounting legs 43 is not limited to two.

(Embodiment 2)
Hereinafter, the light-emitting device of this embodiment will be described with reference to FIGS.

  The basic configuration of the light emitting device of the present embodiment is substantially the same as that of the first embodiment, the shape of the unit body 40 in the light emitting unit 1 is different, and a U-shaped leaf spring for attaching the unit body 40 to the attachment plate 60. The center piece 51 which consists of the leg pieces 52 and 52 continuously and integrally is provided with a fixing spring 50 arranged in contact with the rear surface of the unit body 40. In addition, the same code | symbol is attached | subjected to the component similar to Embodiment 1, and description is abbreviate | omitted.

  The unit legs 40 of the present embodiment are not provided with the mounting legs 43 and 43 (see FIG. 1) described in the first embodiment, and project from the front of the rectangular body body 41 to the front. A cylindrical protective cylinder 41a surrounding the lens 30 over its entire circumference is provided continuously and integrally. Further, notches 41b and 41b are formed on the side surface of the unit body 40 along the front-rear direction so that both leg pieces 52 and 52 of the fixing spring 50 can be displaced to the side surface side of the unit body 40. Here, each notch part 41b and 41b is formed ranging over the body main body 41 and the protection cylinder part 41a.

  In the fixing spring 50, the central piece 51 is bent in a V shape so that the distance between the leg pieces 52, 52 becomes closer to the tip of each other (see FIG. 9), and the leg pieces 52, 52 are The unit body 40 is disposed along each of the notches 41 b and 41 b, and the center part 51 of the center piece 51 is disposed in contact with the rear surface of the unit body 40. The fixing spring 50 has locking claws 52a and 52a that are locked to the peripheral portion of the window hole 63 on the front side of the mounting plate 60 at the other end of both leg pieces 52 and 52 in an integrated manner. . The fixing spring 50 is formed by bending a plate of stainless spring steel (for example, SUS304) having excellent corrosion resistance and high spring properties. Note that the bending angle of the locking claws 52a and 52a is not particularly limited, and may be an angle of approximately 90 ° as shown in FIG. 10, or as shown in FIG. It may be an angle. 9 to 11, the bending angle of the central piece 51 is 160 °, and the angle formed by the central piece 51 and each leg piece 52, 52 is an angle slightly smaller than 90 °. Although it is set to °, these angles are not particularly limited.

  Moreover, as shown in FIG. 12, the mounting plate 60 in the present embodiment has circular window holes 61 arranged in a two-dimensional array. The inner diameter of each window hole 61 is the outer diameter of the protective cylinder portion 41a. The dimension is set to be slightly larger than the dimension, and the coupling hole 63 (see FIG. 4) described in the first embodiment is not provided. Therefore, the mounting plate 60 can be easily manufactured as compared with the first embodiment.

  In the light emitting device of the present embodiment described above, each light emitting unit 1 is a U-shaped leaf spring that attaches the unit body 40 to the mounting plate, and the central piece 51 that connects both leg pieces 52 and 52 is the rear surface of the unit body 40. The notch portions 41b and 41b are provided on the side surface of the unit body 40 so that both leg pieces 52 and 52 of the fixing spring 50 can be displaced to the side surface side of the unit body 40. The fixing spring 50 is formed along the front-rear direction, and has locking claws 52 a and 52 a that are locked to the peripheral portion of the window hole 61 on the front side of the mounting plate 60 at the front ends of both leg pieces 52 and 52. Therefore, at the time of construction for attaching the light emitting unit 1 to the attachment plate 60, the optical lens 3 of the unit body 40 with the both leg pieces 52, 52 of the fixing spring 50 being displaced to the side surface side of the unit body 40. And the front ends of both leg pieces 52 and 52 of the fixing spring 50 are inserted into the window holes 61 from the rear surface side of the mounting plate 60, and then the front end portions of both leg pieces 52 and 52 are engaged by the spring force of the fixing spring 50. Since the pawls 52a and 52a can be attached to the attachment plate 60 by being locked to the peripheral portion of the window hole 61 on the front side of the attachment plate 60, the construction on the attachment plate 60 is facilitated.

  Also in the light emitting device of this embodiment, since the light emitting units 1 are connected to each other by the flexible wire 2 as in the first embodiment, the mounting position of the light emitting unit 1 on the mounting plate 60 is changed. In this case, the light emitting unit 1 may be moved to the rear side of the mounting plate 60 in a state where both the leg pieces 52, 52 of the fixing spring 50 are displaced to the side surface side of the unit body 40. It is possible to easily cope with a change in the mounting position of 1.

  By the way, the light emitting unit 1 of Embodiment 2 can be attached also to the mounting plate 60 of Embodiment 1, as shown to Fig.13 (a). That is, as shown in FIG. 13B, the optical lens 30 of the unit body 40 is inserted into the window hole 61 from the rear surface side of the mounting plate 60, and both leg pieces 52, 52 of the fixing spring 50 are inserted into the unit body 40. The distal ends of both leg pieces 52, 52 of the fixing spring 50 are inserted into the coupling hole 63 from the rear side of the mounting plate 60 in a state of being displaced to the side surface side, and then both leg pieces 52, The light emitting unit 1 can be mounted on the mounting plate 60 by locking the locking claws 52a, 52a at the front end portion of the 52 to the peripheral portion of the coupling hole 63 on the front surface side of the mounting plate 60. However, as shown in FIG. 13 (c), an external force is applied to the leg pieces 52, 52 of the fixing spring 50 to the side of the unit body 40 with the light emitting unit 1 attached to the mounting plate 60. Then, there is a possibility that the locking by the locking claws 52a, 52a is released and the light emitting unit 1 is detached from the mounting plate 60. Therefore, the light emitting device of Embodiment 3 that solves this problem will be described below.

(Embodiment 3)
Hereinafter, the light-emitting device of this embodiment will be described with reference to FIGS. 14 and 15.

  The basic configuration of the light emitting device of the present embodiment is substantially the same as that of the second embodiment, and the unit body 40 in the light emitting unit 1 is different. As shown in FIG. 14A, the unit body 40 of the present embodiment has a substantially square shape in plan view, and the length L2 of one side thereof is from the distance L1 between the leg pieces 52, 52 of the fixing spring 50. The diagonal length L3 is set to be approximately equal to the distance L1 between the leg pieces 52, 52 of the fixing spring 50. Further, the corners of the four corners of the unit body 40 are formed by notching a substantially flat plate shape with a width dimension substantially equal to the width dimension of the fixing spring 50, and the fixing spring 50 is disposed on the diagonal line of the unit body 40. In this case, the inner surfaces of both leg pieces 52, 52 of the fixing spring 50 are in contact with the corners. For this reason, when the unit body 40 is rotated, the fixing spring 50 can be easily positioned on the diagonal line of the unit body 40.

  Hereinafter, a method for attaching the light emitting unit 1 of the present embodiment to the attachment plate 60 will be described. First, the optical lens 30 of the unit body 40 is inserted into the window hole 61 from the rear surface side of the mounting plate 60, the center piece 51 of the fixing spring 50 is brought into contact with the rear surface of the unit body 40, and the fixing spring 50 is In a state where both leg pieces 52, 52 are displaced toward the side surface of the unit body 40, the tip ends of both leg pieces 52, 52 of the fixing spring 50 are inserted into the coupling hole 63 from the rear surface side of the mounting plate 60, and then fixed. Due to the spring force of the spring 50, the locking claws 52 a and 52 a at the distal ends of the leg pieces 52 and 52 are locked to the peripheral portion of the coupling hole 63 on the front surface side of the mounting plate 60. At this time, as shown in FIG. 14A, the fixing spring 50 can be displaced to the side surface side of the unit body 40 so that the leg pieces 52, 52 of the fixing spring 50 in the unit body 40 can be displaced. It is arrange | positioned in the position which pinches | interposes a site | part shorter than distance.

  Next, as shown in FIG. 14 (b), by rotating the unit body 40, the fixing spring 50 is on the diagonal of the unit body 40, that is, both leg pieces 52 of the fixing spring 50 in the unit body 40. The light emitting unit 1 is attached to the mounting plate 60 by placing the inner surfaces of both leg pieces 52 and 52 of the fixing spring 50 and the corners of the unit body 40 in contact with each other. It is attached. At the mounting position after the rotation of the unit body 40, since there is almost no gap between the leg pieces 52, 52 of the fixing spring 50 and the unit body 40, the fixing spring 50 is displaced toward the unit body 40. I can't.

  In the light emitting device of this embodiment described above, the unit body 40 has a portion having a width dimension substantially equal to the distance between both leg pieces 52 and 52 of the fixing spring 50 and between the both leg pieces 52 and 52 of the fixing spring 50. Since the light emitting unit 1 is attached to the attachment plate 60 after the light emitting unit 1 is attached to the attachment plate 60, the unit body 40 is rotated and the leg pieces 52, 52 between the fixing springs 50 in the unit body 40 are provided. By fixing the portion approximately equal to the distance with the fixing spring 50, the fixing spring 50 is not displaced toward the unit body 40 even when an external force is applied, so that the locking claws 52a and 52a are unlocked. Therefore, the light emitting unit 1 can be securely fixed to the mounting plate 60. Further, when removing the light emitting unit 1 from the mounting plate 60, a special tool is required because the fixing spring 50 can be displaced to the unit body 40 side simply by rotating the unit body 40 again. The light-emitting unit 1 can be easily removed without failure.

  As shown in FIG. 15A, a protrusion 52b that protrudes toward the unit body 40 is provided on the inner surface of both leg pieces 52, 52 of the fixing spring 50, and a fitting portion into which the protrusion 52b is fitted. You may provide 40a in the corner | angular part of the unit body 40. FIG. In this case, the fixing spring 50 and the unit body 40 are fixed to each other by fitting the protrusion 52b to the fitting portion 40a, so that the light emitting unit 1 is securely fixed to the mounting position after the unit body 40 is rotated. can do. Further, as shown in FIG. 15 (b), nothing is provided on the fixing spring 50, and a pair of protrusions 40 b that sandwich the fixing spring 50 are provided at the four corners of the unit body 40. It doesn't matter. Also in this case, since the fixing spring 50 is fixed to the unit body 40 by the protrusion 40b, the light emitting unit 1 can be reliably fixed to the mounting position after the unit body 40 is rotated.

  By the way, in each above-mentioned embodiment, although the luminescent color of LED10 is blue, the luminescent color of LED10 is not restricted to blue, for example, red, green, orange, white, etc. may be sufficient. As the LED chip 11, a blue light emitting color may be used, and a white LED that obtains white light by combining with a yellow phosphor that emits light when excited by light emitted from the LED chip 11 may be used. Moreover, although LED10 comprises the solid light emitting element, not only LED10 but organic EL may be sufficient as a solid light emitting element. In each of the above embodiments, the optical lens 30 constitutes a light extraction part. However, the light extraction part only needs to be formed of a translucent material, and is not necessarily constituted by the optical lens 30. When a plurality of light emitting units 1 are connected in series as in each embodiment, the number of light emitting units 1 may be appropriately defined according to the forward voltage of the solid state light emitting device. By predefining, safety can be improved and efficiency can be increased.

An embodiment is shown, (a) is a schematic perspective view, (b) is a principal part schematic sectional drawing of the state attached to the attachment board. The light emission unit in the same as above is shown, (a) is a schematic front view, (b) is a schematic bottom view, and (c) is a schematic side view. FIG. 3 is a schematic cross-sectional view taken along the line A-A ′ of FIG. The mounting plate in the same as above is shown, (a) is a front view, (b) is a top view, (c) is a side view, and (d) is an enlarged view of the main part of (a). The box main body in the same as above is shown, (a) is a front view, (b) is a top view, and (c) is a side view. It is explanatory drawing of how to attach to the mounting plate of the light-emitting device in the same as the above. The light emission unit in the light-emitting device of Embodiment 2 is shown, (a) is a schematic front view, (b) is a schematic bottom view, (c) is a schematic side view. FIG. 8 is a schematic cross-sectional view taken along the line A-A ′ of FIG. The fixing spring in the above is shown, (a) is a front view, (b) is a side view. The other example of a structure of the spring for fixation in the same as the above is shown, (a) is a front view, (b) is a side view. The other example of a structure of the spring for fixation in the same as the above is shown, (a) is a front view, (b) is a side view. It is a front view which shows the mounting plate in the same as the above. It is explanatory drawing of the method of attaching the light emission unit of Embodiment 2 to the attachment board of Embodiment 1, (a) is a schematic perspective view, (b) is a schematic side view, (c) is the outline when external force is added. It is a side view. FIG. 7 shows Embodiment 3, (a) is a schematic rear view before the unit body is rotated, and (b) is a schematic rear view after the unit body is rotated. The other example of a structure of the fixing spring and the unit body in the same as above is shown, (a) is an enlarged view of a main part when a protrusion is provided on the fixing spring and a fitting part is provided on the unit body, (b) It is a principal part enlarged view at the time of providing a projection part in a unit body. A prior art example is shown, (a) is a schematic perspective view of a light-emitting device, (b) is a schematic perspective view of a light-emitting unit. The other conventional example is shown, (a) is an explanatory view of how to attach to the mounting plate, (b) is a partially broken front view in a state of being attached to the mounting plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light emission unit 2 Electric wire 10 LED (solid light emitting element)
30 Optical lens (light extraction part)
40 unit body 41 body main body 43 mounting leg 43a locking claw 50 fixing spring 51 central piece 52 leg piece 52a locking claw 60 mounting plate 61 window hole 63 coupling hole

Claims (2)

A light-emitting device in which a plurality of light-emitting units are connected by flexible wires, and each light-emitting unit is inserted and attached from the rear side of the mounting plate to each separate window hole penetrating the mounting plate. A unit body that covers the solid state light emitting element and at least a part of the solid state light emitting element and the electric wire electrically connected to the solid state light emitting element, and is inserted into the window hole and emits light emitted from the solid state light emitting element to the outside The light extraction part is made up of a unit body made of a translucent material and a U-shaped leaf spring that attaches the unit body to the mounting plate, and a central piece that connects both leg pieces contacts the rear surface of the unit body. A fixing spring is formed on the side surface of the unit body along the front-rear direction so as to displace both leg pieces of the fixing spring toward the side surface of the unit body. The front end of the attached plate has a locking claw locked to the peripheral part of the window hole at the tip of both leg pieces, and the unit body has a substantially square shape in plan view between the leg pieces of the fixing spring. A portion having a width dimension substantially equal to the distance and a portion having a width dimension shorter than the distance between both leg pieces of the fixing spring, and the length of the diagonal line is substantially equal to the distance between both leg pieces of the fixing spring. A light-emitting device characterized in that each corner portion is formed in a substantially planar shape having a width dimension substantially equal to the width dimension of the fixing spring . The fixing spring and the unit body are respectively provided with fixing means and fixed means for fixing each other, and the fixing means are provided on the inner surfaces of both leg pieces of the fixing spring and project toward the unit body side. The light emitting device according to claim 1 , wherein the fixing means is a fitting portion that is provided at a corner portion of the unit body and into which the protruding portion is fitted .

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