JP2007012322A - Led type lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED type lighting system that can change a light irradiation direction to an arbitrary one and can be used by making connection to the socket section of the tool of a fluorescent lamp in each kind of form. <P>SOLUTION: An LED substrate 11 in which a number of LEDs 10 are mounted on the surface is mounted into a transparent cylindrical pipe 2, and light is applied from the surface of the LED substrate 11. Edge pipes 3, 4 are mounted rotatably coaxially at both the sides of the transparent cylindrical pipe 2, and metal caps 5, 6 in which a pair of terminals that can be connected to the tool of the fluorescent lamp is provided are mounted to the end of the edge pipes 3, 4. A circuit board 15 is arranged in one edge pipe 4, and a lighting circuit 20 of LEDs is packaged on the circuit board. A flexible lead wire is connected between the circuit board 15 and the LED substrate 11 and between the terminals 7a, 7b of the other edge pipe 3 and the circuit board 15 or the LED substrates 11 to permit mutual rotation. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illuminating device using an LED (light emitting diode), and more particularly to an LED type illuminating device that can be easily mounted and used on an existing fluorescent lamp fixture.

2. Description of the Related Art Conventionally, fluorescent lamp type LED lamps have been proposed in the following Patent Document 1 as an illumination device that is used by being mounted on an existing fluorescent lamp fixture. This fluorescent lamp type LED lamp is constructed by attaching a strip-shaped substrate with a number of LEDs (light emitting diodes) mounted in a transparent cylindrical pipe along the longitudinal direction, and attaching terminal portions to both ends of the transparent cylindrical pipe. ing.
JP 2001-351402 A

  However, this type of conventional LED-type lamp has a large number of LEDs mounted on the surface of the substrate, and an LED lighting circuit is mounted on the back surface of the substrate. For example, it is fixed so as to face a predetermined front. In other words, the light irradiation direction of the LED lamp is a structure in which the front surface of the transparent cylindrical pipe is always faced and the terminal portions fixed to both ends of the transparent cylindrical pipe are fixed in a certain direction.

  For this reason, when this type of LED lamp is mounted on a fluorescent lamp fixture, the socket portion of the fluorescent lamp fixture is a non-rotating butted socket portion, which is always in a fixed direction, at both ends of the transparent cylindrical pipe. If the socket portion is of a type that is mounted by pressing the terminal portion against the terminal plate of the socket portion, the LED lamp can be mounted with the light irradiation side in a certain direction. However, the socket part of the fluorescent lamp fixture is a rotary sandwiching socket part, and the terminal parts at both ends of the LED lamp are inserted into the socket part, and then rotated by 90 degrees in either direction. When it is a structure, there existed a subject that the light irradiation surface of the LED might not correspond with the direction of the irradiation surface of a fluorescent lamp fixture by the direction which rotates an LED type lamp.

  In addition, even in the case of a butt-type socket part in which the terminal parts at both ends of the transparent cylindrical pipe are always pressed against the terminal plate of the socket part in a fixed direction, the irradiation surface is perpendicular to the plane of the socket part. In the fluorescent lamp apparatus to be formed, the light irradiation direction of the fluorescent lamp apparatus and the light irradiation direction of the LED lamp differ from each other, so that there is a problem that the LED lamp cannot be mounted on this type of fluorescent lamp apparatus.

  This invention solves the above-mentioned subject, and while changing a light irradiation direction to arbitrary directions, it can connect to the socket part of the fluorescent lamp fixture of various types, and can be used for LED type illumination An object is to provide an apparatus.

  In order to achieve the above object, in the LED type illumination device according to claim 1 of the present invention, an LED substrate having a number of LEDs mounted on the surface thereof is mounted in a transparent cylindrical pipe, and light is emitted from the surface of the LED substrate. In the LED-type lighting device, end pipes are coaxially and rotatably attached to both sides of the transparent cylindrical pipe, and a metal cap provided with a pair of terminals that can be connected to a fluorescent lamp fixture at the end of the end pipe. A circuit board is mounted in one end pipe, and a lighting circuit for the LED is mounted on the circuit board. Between the circuit board and the LED board, and a terminal of the other end pipe and the circuit board Alternatively, a flexible lead wire is connected between the LED substrates so as to allow mutual rotation. The transparent cylindrical pipe here is a concept including a translucent or translucent cylindrical pipe.

  In the LED illumination device, as described in claim 2, a circumferential groove is formed at an outer peripheral end of the end pipe, and an end of the transparent cylindrical pipe is formed on the end pipe so as to cover the circumferential groove. A plunger is inserted into a hole that is rotatably fitted and is drilled in the outer peripheral end of the transparent cylindrical pipe, and a metal ball that is rotatably provided at the tip of the plunger is inserted into the circumferential groove, and The end pipe and the transparent cylindrical pipe can be configured to be rotatably connected to each other in contact with the bottom of the circumferential groove.

  Further, the lighting circuit is provided with a rectifier and a voltage control circuit, a surge absorber for absorbing a surge voltage is connected to the input side of the rectifier, and the output side of the rectifier is connected to the input at the time of power-on. A power thermistor that absorbs rush current can be connected.

  According to the LED-type lighting device having the above-described configuration, a metal cap having a terminal that can be connected to a socket portion of an existing fluorescent lamp fixture is attached to both ends of the transparent cylindrical pipe via an end pipe, and the existing fluorescent lamp fixture is attached. However, in the transparent cylindrical pipe, the LED substrate with a large number of LEDs mounted on the surface is attached with the light irradiation surface facing in one direction, so that the irradiation surface as a lighting device is Restricted to the front side. However, since the end pipes are fitted to both ends of the transparent cylindrical pipe so as to be rotatable relative to each other, after the lighting device is mounted on the existing fluorescent lamp fixture, the transparent cylindrical pipe is turned so that the light irradiation surface is arbitrarily set. Can change direction. Therefore, in the case where the irradiation surface of the fluorescent lamp fixture is determined in one direction, the light irradiation surface of the illuminating device can be easily adjusted to that direction by turning the transparent cylindrical pipe.

  In addition, even if the socket part of the fluorescent lamp fixture is a sandwiching and rotating socket part that is attached while turning the lighting device, it can be easily attached while turning the end pipes on both sides. In this case as well, in the same manner as described above, after the illuminating device is mounted on the fluorescent lamp fixture, the transparent cylindrical pipe can be rotated in an arbitrary direction to easily adjust the light irradiation surface. Further, by providing a hole on the end pipe side for fitting the plunger and the metal ball at the tip thereof, the angular position of the transparent cylindrical pipe or the end pipe can be stopped with a sense of moderation at a predetermined angular position.

  Furthermore, LEDs that emit white light can be arranged in a certain number so that they can have the same luminous brightness as fluorescent lamps. Compared with fluorescent lamps that have the same luminous brightness, their power consumption is compared. In this case, compared with a fluorescent lamp that irradiates light with the same luminance, the illumination device using the white LED can significantly reduce power consumption. Also, by using an LED illumination device instead of a fluorescent lamp, the life of the lamp can be greatly extended, and it is suitable and effective for a fluorescent lamp apparatus such as an evacuation guide lamp that is always lit and used. Can be used.

  In addition, if a surge absorber that absorbs surge voltage is connected to the input side of the rectifier and a power thermistor that absorbs inrush current at the time of power-on is connected to the output side of the rectifier, it is likely to occur in commercial power supply. The LED can be effectively protected from surge voltage and inrush current.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of the LED illumination device 1, FIG. 2 is a side view thereof, and FIG. 3 is a bottom view thereof. The LED illumination device 1 is basically configured to be usable by being mounted on socket portions 31 and 32 of an existing fluorescent lamp fixture 30, and a large number of LEDs (white light emitting diodes) are provided in the transparent cylindrical pipe 2. A long LED substrate 11 to which 10 is attached is attached along the longitudinal direction, and terminal portions 7 and 8 are attached to both ends of the transparent cylindrical pipe 2 via end pipes 3 and 4.

  The transparent cylindrical pipe 2 is formed into a cylindrical pipe shape by using a transparent, translucent or translucent polycarbonate resin or the like, and end pipes 3 and 4 are rotatably fitted at both ends. In order to enable the pipes to rotate relative to each other, as shown in FIGS. 4 to 6, plungers 9 provided with metal balls at the ends are formed in holes formed in the radial direction at both ends of the transparent cylindrical pipe 2. The metal ball at the tip is fitted so as to protrude inward. The plunger 9 has a structure in which a metal ball is urged and inserted by a coil spring into a cylindrical case with a narrowed tip, and the metal ball exposed from the tip of the case is rotatably held.

  The ends of the end pipes 3 and 4 are loosely fitted inside the both ends of the transparent cylindrical pipe 2, but circumferential grooves 3 a and 4 a are circumferentially provided on the outer peripheral surfaces of the end pipes 3 and 4. Further, four small holes 3b and 4b are formed at the bottoms of the circumferential grooves 3a and 4a, respectively, at intervals of 90 degrees, for example, and the metal balls of the plunger 9 are inserted into the holes 3b and 4b. Thus, a moderation feeling of positioning can be obtained.

  When attaching the end pipes 3 and 4 to both ends of the transparent cylindrical pipe 2, first, the end pipes 3 and 4 are loosely fitted into both ends of the transparent cylindrical pipe 2, and then the plunger 9 is inserted from the outside of the pipe 2 to the transparent cylindrical pipe. It press-fits into the hole drilled at the end of 2. At this time, by fitting the tip metal ball so as to protrude inside the pipe 2, the tip portion of the plunger 9 enters the circumferential grooves 3 a and 4 a of the end pipes 3 and 4, and the tip metal ball is It becomes possible to slide the bottoms of the circumferential grooves 3a and 4a. Thereby, the end pipes 3 and 4 on both sides are attached to the transparent cylindrical pipe 2 so as to be rotatable around its axis, and the transparent cylindrical pipe 2 can be rotated relative to the end pipes 3 and 4 on both sides. It is attached.

  The end pipes 3 and 4 can be formed of the same transparent synthetic resin as the transparent cylindrical pipe 2, but can also be formed of another synthetic resin having translucency or an opaque synthetic resin. Metal caps 5 and 6 are fitted to the ends of the end pipes 3 and 4 on both sides, respectively. The metal caps 5 and 6 are formed in the same shape as the metal caps fitted to both ends of an existing, for example, FL type fluorescent lamp, and two terminals 7a and 7b are electrically connected in parallel to the tip of the metal cap 5. The two terminals 8a and 8b are similarly projected from the tip of the metal cap 6 in the same manner. These terminals 7 a, 7 b, 8 a, 8 b are formed according to the same standard as the FL type fluorescent lamp, and can be attached to the socket parts 31, 32 of the existing fluorescent lamp fixture 30. The length of the lighting device 1, that is, the length in the axial direction in which the end pipes 3 and 4 are connected to both sides of the transparent cylindrical pipe 2 is the same as that of the existing FL type fluorescent lamp.

  Furthermore, an LED substrate 11 on which a large number of LEDs (white light emitting diodes) 10 are mounted is fixed in the transparent cylindrical pipe 2. As shown in FIG. 1, FIG. 2, etc., the LED board 11 is formed in a strip-like shape and is mounted on the front (front) side of the LED board 11 so that, for example, 31 LEDs 10 irradiate the front with light. . The LED substrate 11 is fixed along the inside of the transparent cylindrical pipe 2 by a member such as a synthetic resin clip. Therefore, the front surface (front surface) of the LED substrate 11, that is, the light irradiation surface of the LED 10 is the front surface of the lighting device 1, and the back surface of the LED substrate 11 is the back surface of the lighting device 1.

  As shown in FIGS. 1 and 4, a circuit board 15 is attached in the left end pipe 4, and a connection board 16 for connection is attached in the right end pipe 3. The circuit board 15 and the connection board 16 can use the same board, thereby reducing the manufacturing cost. The circuit board 15 is provided for mounting the LED lighting circuit 20, and the other connection board 16 is used for connection between the terminals 7 a and 7 b and the lighting circuit 20.

  The circuit board 15 in the end pipe 4 and the circuit on the LED board 11 are configured as shown in FIG. Among them, a rectifier RC, a surge absorber SA, a power thermistor PS, an electrolytic capacitor C, and a voltage control circuit 24 are mounted on a circuit board 15 and are connected to 31 LEDs (white light emitting diodes) 10 and each LED 10 in parallel. The diode Z is mounted on the LED substrate 11.

  As shown in FIG. 7, the terminals 8a and 8b of the terminal portion 8 are short-circuited and connected to one terminal on the AC input side of the rectifier RC, and the other AC input terminal of the rectifier RC has a flexible lead wire. 14, the terminals 7 a and 7 b of the other terminal portion 7 are short-circuited and connected. The flexible lead wire 14 can be connected using various conductive wires having flexibility, but a part of the conductive layer on the LED substrate 11 can also be used. The flexible lead wire 14 is wired with a certain margin so as to allow rotation between the transparent cylindrical pipe 2 and the end pipes 3 and 4 on both sides within a range of, for example, about 180 degrees. It becomes.

  As shown in FIG. 4, the electrical connection between the LED board 11 and the circuit board 15 is made by two flexible lead wires 12 and 13, and the terminal portion 7 and the circuit board 15 or the LED board 11 are connected to each other. The connection is made by the flexible lead wire 14, and the flexible lead wires 12 and 13 use various kinds of flexible lead wires like the flexible lead wire 14, and the transparent cylindrical pipe 2 and the like. The wiring is provided with a certain margin so as to allow rotation between the end pipes 4 on both sides.

  As shown in FIG. 7, the lighting circuit 20 of the LED 10 connects a power thermistor PS for suppressing inrush current between terminals on the DC output side of the rectifier RC, and also connects an electrolytic capacitor C for smoothing. The 31 LEDs 10 are connected in series via the voltage control circuit 24. A Zener diode Z is connected in parallel to each of the 31 LEDs 10 so that a current flows in the forward direction even when each LED 10 is disconnected.

  The number of LEDs 10 is adjusted and connected in series so that the rated voltage (for example, 3.3 V) is applied to each LED 10 in operation, thereby dividing the voltage on the DC output side of the rectifier RC, that is, the power supply voltage. The rated voltage is applied to each LED 10. That is, when the lighting device 1 is mounted on an existing fluorescent lamp fixture 30, since AC 100V of commercial power is applied between the terminal portions 7 and 8, the DC output side of the rectifier RC of the lighting circuit 20 A slightly higher DC voltage is output.

  The direct current output voltage of the rectifier RC is applied to the whole of the 31 LEDs 10 connected in series, but a voltage obtained by dividing the voltage applied to the whole 31 (the rated voltage of the LED) is applied to each LED 10. The voltage of the entire LED at that time is controlled at a constant voltage by the voltage control circuit 24. The voltage control circuit 24 is composed of a constant voltage power supply circuit in which two transistors TR1 and TR2 and resistors R1 and R2 are connected, and operates so as to perform constant voltage control on the voltage applied to the entire LED.

  The LED illumination device 1 configured as described above is used by being mounted on an existing fluorescent lamp fixture 30. When the fluorescent lamp apparatus 30 is a glow lamp lighting type, as shown in FIG. 8, the glow lamp is used with the glow lamp removed, and is mounted inside the evacuation guide lamp, for example, as shown in FIG.

  Moreover, the socket parts 31 and 32 of this fluorescent lamp fixture 30 are a butt | matching type | mold, and as shown in FIG. 9, a pair of hole in which a terminal is inserted is formed, and a metal plate is back and forth inside the hole. It is stored in a movable manner. In the case of the fluorescent lamp fixture 30 provided with this type of butt-type socket, the lighting device 1 does not rotate the transparent cylindrical pipe 2 or the end pipes 3 and 4, and the terminals 7a of the terminal sections 7 and 8 at both ends are rotated. , 7b, 8a, 8b are mounted so as to abut against the socket portions 31, 32.

  Then, the illumination device 1 mounted in a normal state has an irradiation surface on the lower side of FIG. 9, but when the fixture is formed so that the irradiation surface is on the right side or the left side of FIG. 9, the illumination device 1. By turning the transparent cylindrical pipe 2 90 degrees to the right or left, the irradiation surface can be set to the right or left side of FIG. As described above, in the circumferential grooves 3a and 4a of the end pipes 3 and 4, four holes 3b and 4b are formed at intervals of 90 degrees, and the metal ball at the tip of the plunger 9 on the transparent cylindrical pipe 2 side is formed. Since the holes 3b and 4b can be fitted, when the transparent cylindrical pipe 2 is turned 90 degrees to the right or left, a good moderation feeling can be obtained, and the angle of the front surface of the illumination device 1, that is, the light irradiation surface can be set. , Can be easily changed every 90 degrees.

  On the other hand, when the socket part of the fluorescent lamp apparatus 30 is a sandwiching and rotating socket part 34 as shown in FIG. 10, when mounting the lighting device 1, first, terminal portions at both ends of the lighting device 1. 7 and 8 terminals 7a, 7b, 8a and 8b are inserted into the central recesses in the socket 34, and then the end pipes 3 and 4 at both ends are turned 90 degrees with respect to the transparent cylindrical pipe 2 to provide terminals 7a and 7b. , 8a, 8b are mounted so as to be sandwiched between metal terminal plates in the socket part 34. Thus, since the lighting device 1 can be attached by turning only the end pipes 3 and 4 at both ends, the transparent cylindrical pipe 2 can be attached as it is. After this, for example, the light irradiation surface of the fluorescent lamp fixture 30 is in the lower side of FIG. 10, and the irradiation surface of the transparent cylindrical pipe 2 (the surface of the LED substrate 11) is directed to the right or left, for example, 90 degrees other than the lower side. If it is, the transparent cylindrical pipe 2 may be turned so that its light irradiation surface matches the light irradiation surface of the fluorescent lamp fixture 30.

  Thus, this LED type illumination device 1 has the metal caps 5 and 6 having terminals that can be connected to the socket portions of existing fluorescent lamp fixtures via the end pipes 3 and 4 at both ends of the transparent cylindrical pipe 2. It can be attached and used on existing fluorescent lamp fixtures, but in the transparent cylindrical pipe 2, an LED substrate 11 having a large number of LEDs 10 mounted on its surface is attached with its light irradiation surface facing in one direction. Therefore, the light irradiation surface as the illumination device 1 is limited to the front side. However, since the end pipes 3 and 4 are fitted to both ends of the transparent cylindrical pipe 2 so as to be mutually rotatable, the transparent cylindrical pipe 2 is turned after the lighting device 1 is mounted on the existing fluorescent lamp fixture, The light irradiation surface can be changed in an arbitrary direction. Therefore, it is a case where the irradiation surface of the fluorescent lamp fixture is determined in one direction, and the light irradiation surface of the illuminating device 1 can be easily adjusted to the direction by turning the transparent cylindrical pipe 2.

  Moreover, even if the socket part of the fluorescent lamp fixture is a sandwiching and rotating socket part that is mounted while rotating the lighting device 1, it is easy to rotate the end pipes 3 and 4 on both sides. In this case as well, as described above, after the lighting device 1 is mounted on the fluorescent lamp fixture, the transparent cylindrical pipe 2 can be rotated in an arbitrary direction to easily adjust the light irradiation surface. it can. Further, by providing a hole on the end pipe side where the plunger 9 and a metal ball at the tip end of the plunger 9 fit, the position of the transparent cylindrical pipe 2 or the end pipes 3 and 4 can be changed with a sense of moderation at a predetermined angular position. .

  Furthermore, white LEDs that emit white light can be arranged in a certain number so that they can obtain the same luminous brightness as fluorescent lamps. Fluorescent lamps having the same luminous brightness and their power consumption When compared, the power consumption can be reduced to 1/3 to 1/4 in a lighting device using a white LED, compared to a fluorescent lamp that emits light of the same luminance. Further, by using an LED illumination device in place of the fluorescent lamp, the life of the lamp can be extended by at least 50%.

  As described above, the LED-type lighting device 1 of the present invention consumes less power and has a longer life than a normal fluorescent lamp, so that the evacuation guide lamp as shown in FIG. It can be suitably and effectively used in a fluorescent lamp apparatus.

It is a front view of the LED type illuminating device which shows one Embodiment of this invention. It is the left view. It is a bottom view of the illumination device. It is an expanded sectional view of the edge part of the illuminating device. It is aa sectional drawing of FIG. It is sectional drawing of the state which rotated the end pipe 4 90 degree | times. It is a circuit diagram of an illuminating device. It is explanatory drawing of the state which mounted | wore the fluorescent lamp fixture with the same illuminating device. 3 is a front view of a butt-type socket portion 31, 32 of the fluorescent lamp fixture 30. FIG. FIG. 4 is a front view of a rotary sandwiching socket portion 34. It is a front view of the evacuation guide light which uses the LED type illuminating device 1. FIG.

Explanation of symbols

1-LED type illumination device 2-transparent cylindrical pipe 3,4-end pipe 3a, 4a-circumferential groove 5,6-metal cap 7,8-terminal portion 7a, 7b, 8a, 8b-terminal 9-plunger 10 -LED (white light emitting diode)
11-LED board 12,13,14-flexible lead wire 15-circuit board 20-lighting circuit 30-fluorescent lamp fixture 31,32-socket part

Claims (3)

In the LED illumination device in which a LED substrate having a large number of LEDs mounted on the surface thereof is mounted in a transparent cylindrical pipe, and light is emitted from the surface of the LED substrate.
End pipes are rotatably mounted on both sides of the transparent cylindrical pipe on the same axis, and a metal cap provided with a pair of terminals connectable to a fluorescent lamp fixture is attached to the end of the end pipe. A circuit board is disposed in the pipe, and a lighting circuit for the LED is mounted on the circuit board. Between the circuit board and the LED board and between a terminal of the other end pipe and the circuit board or the LED board, An LED-type lighting device, characterized in that flexible lead wires are connected while allowing mutual rotation.   A circumferential groove is formed at the outer circumferential end of the end pipe, and the end of the transparent cylindrical pipe is rotatably fitted in the end pipe so as to cover the circumferential groove, and the outer circumferential end of the transparent cylindrical pipe A plunger is inserted into a hole drilled in the portion, and a metal ball rotatably provided at the tip of the plunger is caused to enter the circumferential groove, and is brought into contact with the bottom of the circumferential groove, thereby the end pipe. The LED illumination device according to claim 1, wherein the transparent cylindrical pipe and the transparent cylindrical pipe are connected to each other so as to be rotatable.   The lighting circuit is provided with a rectifier and a voltage control circuit, a surge absorber that absorbs a surge voltage is connected to the input side of the rectifier, and a power that absorbs an inrush current when power is turned on to the output side of the rectifier The thermistor is connected, The LED type illuminating device of Claim 1 or 2 characterized by the above-mentioned.