JP2017004611A - Illumination lamp, illumination apparatus, lighting control circuit, and drive method for illumination lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the inconvenience of output current, power consumption, and illuminance increasing when an illumination lamp comprising a light-emitting diode module and a resistance circuit for generating impedance equivalent to that of a filament has been connected with a resonant rapid stabilizer.SOLUTION: A voltage detection circuit detects a voltage applied to a resistance circuit. When a voltage showing establishment of connection with a resonant first rapid stabilizer has been detected by the voltage detection circuit, a drive circuit performs lighting drive on a semiconductor light-emitting element in a constant current mode. When a voltage meaning establishment of connection with a second rapid stabilizer other than the first rapid stabilizer has been detected by the voltage detection circuit, the drive circuit performs lighting drive on the light-emitting diode module in a fixed switching mode.SELECTED DRAWING: Figure 16

Description

  The present invention relates to an illumination lamp, an illumination device, a lighting control circuit, and an illumination lamp driving method.

  Nowadays, instead of fluorescent lamps having filament electrodes, illumination lamps (LED illumination lamps) using light-emitting diodes (LEDs) with low power consumption are becoming widespread. Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-277188) includes a lighting device for a glow starter type fluorescent lamp, a lighting device for a rapid start type fluorescent lamp, and an inverter type electronic fluorescent lamp ballast for the fluorescent lamp. An LED illuminating lamp that can be attached to a luminaire is disclosed.

  Here, in the case of an LED illumination lamp that can be operated with a directly supplied commercial AC power supply (AC power supply) and with a power supply from a copper-iron fluorescent lamp ballast, normal constant current control is performed. In the rapid series 2-lamp ballast, there is a disadvantage that the brightness of the two lamps is unbalanced. For this reason, the inconvenience that the brightness of the two lamps is unbalanced is prevented by detecting the rapid ballast on the LED lighting side and performing an uncontrolled switching operation.

  However, when an LED illuminating lamp is connected to a specific rapid ballast called a resonant rapid ballast among multiple types of rapid ballasts, the output current of the LED illuminating lamp increases, resulting in increased power consumption and illuminance. was there.

  The present invention has been made in view of the above-described problems. An illumination lamp, an illumination device, an illumination control circuit, and the like that enable optimal illumination control corresponding to a power supply mode of an illumination lamp using a semiconductor light emitting element, And it aims at providing the drive method of an illuminating lamp.

  In order to solve the above-described problems and achieve the object, the present invention detects a voltage applied to a semiconductor light emitting element, a resistance circuit that generates an impedance equivalent to a filament, and a voltage applied to the resistance circuit, and outputs a detection signal. When the voltage detection circuit and the detection signal indicate that the voltage is connected to the resonant first rapid ballast, the semiconductor light emitting element is driven to light in a constant current mode, and the detection signal is In the case of indicating that the voltage is connected to a second rapid ballast other than the rapid ballast, a drive circuit for driving and driving the semiconductor light emitting element in a fixed switching mode is provided.

  Advantageous Effects of Invention According to the present invention, there is an effect that it is possible to perform optimal lighting control corresponding to a power supply form of an illumination lamp using a semiconductor light emitting element.

FIG. 1 is an external perspective view of a lighting apparatus according to an embodiment. FIG. 2 is a sectional view of the lamp cut along the longitudinal direction. FIG. 3 is an exploded perspective view of the illuminating lamp. FIG. 4 is an exploded perspective view of both ends of the illuminating lamp. FIG. 5 is a cross-sectional view of the illuminating lamp. FIG. 6 is a block diagram of the illumination lamp of the embodiment. FIG. 7 is a block diagram of the illuminating lamp according to the embodiment in the case where a high frequency filter circuit is provided separately from the filter circuit. FIG. 8 is a block diagram of the illuminating lamp of the embodiment when the drive circuit is configured to be bypassable. FIG. 9 is a block diagram of the illuminating lamp of the embodiment in the case where the second drive circuit is provided separately from the drive circuit. FIG. 10 is a block diagram of the illuminating lamp according to the embodiment when the power saving switching circuit is provided. FIG. 11 is a block diagram of the illuminating lamp according to the embodiment when the filter circuit is not provided. FIG. 12 is a circuit diagram illustrating an example of a current amount detection unit and a reactive current generation unit provided in the illumination lamp. FIG. 13 is a circuit diagram of a resonant rapid ballast. FIG. 14 is a cross-sectional view of a portion of a resonant rapid ballast. FIG. 15 is a diagram showing an equivalent circuit configuration of the resonant rapid ballast. FIG. 16 is a block diagram of an illuminating lamp that clearly shows a discrimination function for discriminating between a normal rapid ballast and a resonant rapid ballast. FIG. 17 is a circuit diagram of a voltage detection circuit provided in an illumination lamp attached to the illumination device of the embodiment.

  Exemplary embodiments of an illuminating lamp, an illuminating device, a lighting control circuit, and an illuminating lamp driving method will be described below in detail with reference to the accompanying drawings.

  First, FIG. 1 shows an external perspective view of the illumination device of the embodiment. As shown in FIG. 1, the illumination device 200 includes an illumination lamp 100 and a lamp 150 to which the illumination lamp 100 is attached.

  The illuminating lamp 100 includes a semiconductor light emitting element such as a light emitting diode (LED) as a light source. The illuminating lamp 100 includes cap members 1 a and 1 b, a housing 2, and a translucent member 3. The housing | casing 2 has the elongate shape made by extruding metal members, such as an aluminum alloy or a magnesium alloy, for example. Moreover, the housing | casing 2 is formed so that a cross section may become a substantially semicylindrical shape. The translucent member 3 has an elongated substantially semi-cylindrical shape like the housing 2 so that the entire light-transmitting member 3 is combined with the housing 2 to have a substantially cylindrical shape. Moreover, the translucent member 3 is formed of resin or glass so as to transmit light beams emitted from the plurality of LEDs.

  The cap members 1a and 1b have a bottomed cylindrical shape, and function as caps at both ends of the housing 2 and the translucent member 3. Further, the cap members 1 a and 1 b are attached to the sockets 151 a and 151 b of the lamp 150, thereby achieving a physical and electrical connection between the lamp 150 and the illuminating lamp 100.

  In this example, the housing 2 has a substantially semi-cylindrical shape, but may have a shape other than a substantially semi-cylindrical shape. In FIG. 1, the translucent member 3 is drawn in a semicircular shape, but it may be configured such that the cross section is cylindrical like a fluorescent lamp and the translucent member 3 wraps the housing 2.

  FIG. 2 is a cross-sectional view of the lamp 150 cut along the longitudinal direction. The lamp 150 has a fluorescent lamp stabilizer 153 and sockets 151a and 151b to which the illumination lamp 100 is detachably mounted, and is configured to be connectable to a commercial AC power source. The frequency of the commercial AC power supply is, for example, 50 Hz or 60 Hz. Power from the commercial AC power supply is supplied to the fluorescent lamp ballast 153. As shown in FIG. 2, in the lamp 150, the opposite sides of the sockets 151a and 151b are embedded in, for example, the ceiling, and the sockets 151a and 151b are released.

  The sockets 151a and 151b are connected to the fluorescent lamp ballast 153 via a pair of electrode terminals 152a and 152b and a wiring 154. The fluorescent lamp ballast 153 is, for example, a fluorescent lamp glow ballast, a fluorescent lamp inverter ballast, a fluorescent lamp rapid ballast, a resonant rapid ballast, or the like. The illumination lamp 100 can be directly connected to a commercial AC power source. When directly connected to a commercial AC power supply, the fluorescent lamp stabilizer 153 and the like are not necessary. As described above, the illuminating lamp 100 can be connected to any of a fluorescent lamp glow stabilizer, a fluorescent lamp inverter stabilizer, a fluorescent lamp rapid stabilizer, a resonant rapid stabilizer, and a commercial AC power supply. The resonant rapid ballast is an example of a first rapid ballast. The fluorescent lamp rapid ballast is an example of a second rapid ballast.

  Next, an exploded perspective view of the illumination lamp 100 is shown in FIG. 3A is a disassembled perspective view of the vicinity of the left end portion in the longitudinal direction of the illuminating lamp 100. FIG. 3 is an exploded perspective view of the vicinity of the right end portion in the longitudinal direction of the illuminating lamp 100. FIG. As shown in FIG. 3, the cap members 1a and 1b are fastened and fixed to the housing 2 by a plurality of screws 5a, 5b, 5c and 5d. Thereby, cap member 1a, 1b is wrapped so that the translucent member 3 fitted to the housing | casing 2 may become integral. That is, the cap members 1 a and 1 b are formed and provided so as to cover both end portions of the housing 2 and the translucent member 3.

  The cap members 1a and 1b may be manufactured not by screwing but by tightly adhering (caulking) the joint with the housing 2 with a tool or the like, or by insert molding. The cap members 1a and 1b have substantially the same shape as cap members (caps) located at both ends of the existing fluorescent lamp. The illuminating lamp 100 can be easily replaced in place of the existing fluorescent lamp attached to the lamp 150.

  As shown in FIGS. 3 and 4, terminals 4a and 4b are provided on one cap member 1a, and electrode terminals 4c and 4d are provided on the other cap member 1b along the longitudinal direction from the cap member 1a or cap member 1b. It is provided so as to protrude. When the electrode terminals 4a, 4b, 4c, and 4d are provided for each cap member 1a or cap member 1b, a fixing method such as insert molding, caulking, or screw fastening can be used. The illuminating lamp 100 takes in AC power from a commercial power source E via a connector 16 or the like disposed in each cap member 1a, 1b, as shown in the figure labeled (b) in FIG. The taken AC power is supplied to the power supply substrate 7 shown in the drawing with the symbol (a) in FIG. 3 through the lead wires 6a, 6b, 6c, and 6d.

  The power supply board 7 is provided with a DC power conversion electronic component 9 for converting AC power obtained from the commercial power supply E into DC power and supplying it to the mounting boards 11a and 11b. The mounting boards 11a and 11b are provided with an LED module 57 in which a plurality of LEDs 12a are mounted in the longitudinal direction, as shown in FIGS. 4 (a) and 4 (b). The LED is an example of a semiconductor light emitting element. LED is an abbreviation for “light emitting diode”. The power supply board 7 is housed in a substantially semi-cylindrical housing 2 and fixed so as not to move in the housing 2 as shown in the drawing with the reference numeral (a) in FIG. In the lighting device 200 of this embodiment, the lead wires 6a and 6b are shorter than the lead wires 6c and 6d.

  The electric current rectified to a direct current by the electronic component 9 is supplied to the mounting boards 11a and 11b via the lead wires 13a and 13b shown in the drawing with the reference numeral (a) in FIG. The mounting boards 11a and 11b arranged in parallel in the longitudinal direction are electrically connected by unillustrated lead wires, jumper wires or the like. In this example, two mounting boards 11a and 11b are illustrated as mounting boards on which the LED module 57 is mounted, but one or more mounting boards may be provided.

  As shown in FIGS. 3 and 4, in the illumination device 200 of the embodiment, the power supply substrate 7 is disposed below the mounting substrate 11a, and nothing is disposed on the mounting substrate 11b side. In other words, the mounting substrate 11b side is planarly configured so that the inside of the housing 2 is hollow. Further, the mounting boards 11a and 11b are mounted on the flat surface portion 14 which is a portion corresponding to a semicircular chord of the housing 2. Between the flat portion 14 and the mounting substrates 11a and 11b, sheet-like resin members 10a and 10b are respectively disposed so as to be sandwiched between the flat portion 14 and the mounting substrates 11a and 11b.

  As shown in FIG. 3 and FIG. 4, the power supply board 7 with the lead wires 6a and 6b and the lead wires 6c and 6d connected to both ends thereof is a resin that becomes a cover member extending in the longitudinal direction as shown in FIG. The periphery is covered with the holder 30 made of. A cap for insertion into each connector 16 is provided at the tip of the lead wire 6a and the lead wire 6b and at the tip of the lead wire 6c and the lead wire 6d. The holder 30 is a continuous cylindrical part having a long shape having a length equal to or greater than that of the power supply substrate 7 and having no cut portion in a cross-sectional shape. The holder 30 can be formed by a molding method such as extrusion molding, pultrusion molding, or injection molding. For example, PC (polycarbonate) or PA (nylon) is used as the material of the holder 30.

  As shown in FIG. 5, the holder 30 can be stored inside the housing 2 and has substantially the same cross-sectional shape in the longitudinal direction. The power supply substrate 7 is integrated with the holder 30 by being detachably attached to the holder 30.

  That is, as shown in FIG. 5, receiving portions 31 a and 31 b are formed on the side surfaces 30 a and 30 b located in the width direction intersecting with the longitudinal direction of the holder 30 so as to protrude in the width direction. These cradle portions 31a and 31b function as guide rail portions when the power supply substrate 7 is inserted into the holder 30 from the end side. The cradle portions 31 a and 31 b support the power supply substrate 7 so that a separation portion (space portion) 32 is formed between the power supply substrate 7 and the bottom portion 30 c of the holder 30 after the power supply substrate 7 is inserted. The separation portion 32 is a distance at which the lead wire of the electronic component 9 shown in FIG. 3A protruding from the power supply substrate 7 does not touch the holder 30 or electrical insulation can be secured. This is for securing Z1.

  The holder 30 separates the power supply substrate 7 from the housing 2 inside the housing 2 by covering the whole (periphery) of the power supply substrate 7 from the outside. As shown in FIG. 5, the holder 30 contacts the inner surface of the housing 2 in the housing 2. In order to make the holder 30 slip easily in the housing 2, the surface that contacts the inner surface of the housing 2 is a smooth surface. In the case of this example, the holder 30 has a cross-sectional shape without a cutting part for dividing the holder 30. For this reason, when the power supply board 7 is installed in the holder 30, the power supply board 7 is inserted into the holder 30 from the open end of the holder 30. The holder 30 and the power supply board 7 are integrated as a power supply board unit before being attached to the casing 2 and inserted into the casing 2 from the end of the casing 2 in the state of the power supply board unit.

  According to such a configuration, the resin holder 30 that covers the periphery of the power supply substrate 7, separates the power supply substrate 7 from the housing 2, and has substantially the same cross section that can be accommodated in the housing 2 and extends in the longitudinal direction. Therefore, electrical insulation from the housing 2 can be maintained, and high safety can be ensured. Moreover, in order to ensure electrical insulation, since it is not necessary to coat the inside of the housing 2 with an insulating material, the housing 2 can be manufactured at low cost. Furthermore, since the inside of the housing | casing 2 can be divided and separated into the power supply board 7 and the housing | casing 2 with the holder 30, even if the lead wires 13a and 13b of the electronic component 9 protrude, it does not touch the housing | casing 2, It can be manufactured without using expensive parts such as chip parts.

  In the case of the lighting device 200 according to the embodiment, since the holder 30 (the bottom portion 30c of the holder 30) is provided between the power supply substrate 7 and the mounting substrates 11a and 11b, the heat of the power supply substrate 7 is mounted on the mounting substrates 11a and 11b. The influence of heat on the LED module 57 is uniform for all LEDs. For this reason, the inconvenience that the lifetime of the LED is partially shortened with the passage of time can be prevented.

  Further, since the contact surface of the holder 30 integrated with the power supply substrate 7 is smooth, the frictional resistance can be reduced, and the power supply substrate unit can be slid within the housing 2. For this reason, the operation | work which inserts the connector 16 into the cap part of both ends can be facilitated.

  In addition, since the cross-sectional shape of the holder 30 is continuous and formed so as to be continuous, the electronic component 9 does not directly contact the housing 2 and the electrical insulation from the housing 2 is maintained. Therefore, high safety can be secured. Moreover, since it is not necessary to paint the inside of the housing | casing 2 in order to ensure electrical insulation, the housing | casing 2 can be manufactured cheaply.

  Next, FIG. 6 shows a block diagram of each circuit provided on the mounting boards 11 a and 11 b and the power supply board 7 of the illuminating lamp 100. The board shown in FIG. 6 is a board called “LED drive board”. This LED drive board is provided with an inverter detection circuit 51, a resistance circuit 52, a filter circuit 53, a switching circuit 54, a rectification circuit 55, a drive circuit 56, an LED module 57, and a voltage detection circuit 58 as main parts. .

  In the voltage detection circuit 58, when the illuminating lamp 100 is connected to the lamp 150 and energized, the fluorescent lamp ballast 153 built in the lamp 150 is a normal rapid ballast, or the resonant rapid stabilization. Detect whether it is a special rapid ballast called a vessel. The drive circuit 56 lights and drives the LED module 57 in the drive mode switched according to the detection output from the voltage detection circuit 58.

  The inverter detection circuit 51 detects the mounting of the illuminating lamp 100 on the inverter type lamp. The resistance circuit 52 is a circuit that generates an impedance corresponding to a filament of a fluorescent lamp. As will be described later, in this example, the resistance circuit 52 is a parallel circuit of a resistor and a capacitor, and generates an impedance corresponding to a filament. An inductor is connected in series to the parallel circuit of the resistor and the capacitor. As the inductor, for example, ferrite beads are provided to remove noise and improve the inverter lighting rate when the illuminating lamp 100 is attached to the inverter type lamp.

  The filter circuit 53 is an EMI countermeasure filter and is a circuit for reducing electromagnetic noise emitted from the illumination lamp 100 to the surroundings. EMI is an abbreviation for “Electro Magnetic Interference”. The filter circuit 53 can be, for example, a circuit (not shown) in which line-to-line capacitors (X capacitors), anti-earth capacitors (Y capacitors), common mode coils, normal mode coils, and the like are connected in series or in parallel. By providing the filter circuit 53, the illuminating lamp 100 can reduce electromagnetic noise and satisfy the EMI standard. The switching circuit can be configured by, for example, a relay or a semiconductor switch (FET or the like). The switching circuit 54 cuts off the power supply to the resistance circuit 52 when the illuminating lamp 100 is mounted on an AC direct connection type, glow starter type or rapid start type lamp. In other words, the switching circuit 54 is a circuit that supplies power to the resistance circuit 52 when the illuminating lamp 100 is mounted on an inverter-type lamp. The filter circuit 53 may be configured to be bypassable by a switching circuit. The switching circuit 54 connects the filter circuit 53 to the power supply wiring when the illuminating lamp 100 is mounted on a fluorescent light glow ballast, a fluorescent light rapid ballast, and a commercial AC power source. The power supply wiring is a wiring for supplying power input from any one of a commercial AC power supply, a fluorescent lamp rapid stabilizer, a fluorescent lamp glow stabilizer, and a fluorescent lamp inverter stabilizer. In other words, the switching circuit 54 disconnects the filter circuit 53 from the power supply wiring when the illumination lamp 100 is mounted on the fluorescent lamp inverter ballast. Note that this is not the case in a configuration in which the filter circuit 53 is not provided as illustrated in FIG.

  The rectifier circuit 55 is a full-wave rectifier type rectifier circuit formed by connecting, for example, four rectifier diodes D1 to D4 in a bridge shape. The drive circuit 56 includes a current monitoring resistor for monitoring current, a switching element, and a control IC.

  The drive circuit 56 is a circuit that drives an LED module 57 including a plurality of light emitting diodes (LEDs). The drive circuit 56 can include, for example, a step-up / down circuit, a constant current circuit, and the like. By providing the drive circuit 56, an appropriate current that does not exceed the rating can be supplied to the LED module 57 even if the voltage supplied from the rectifier circuit 55 fluctuates, preventing failure of the LED module 57 and saving power. be able to.

  The illuminating lamp 100 can be connected to any of the power supply units of the fluorescent light glow ballast, the fluorescent light rapid ballast, the fluorescent light inverter ballast, and the commercial AC power supply, but the circuit to be used can be selected depending on the connected object. It is configured. The inverter detection circuit 51 is a detection circuit that detects the method of the power supply unit connected to the input unit.

  The inverter detection circuit 51 is a circuit that detects whether or not the fluorescent lamp stabilizer 153 built in the lamp 150 is a fluorescent lamp inverter stabilizer when the illuminating lamp 100 is connected to the lamp 150 and energized. . When the fluorescent lamp ballast 153 is a fluorescent lamp inverter ballast, the frequency of the signal input from the fluorescent lamp ballast 153 to the illumination lamp 100 is a high frequency of about several tens of kHz.

  On the other hand, when the fluorescent lamp ballast 50 is any one of the fluorescent lamp glow ballast, the fluorescent lamp rapid ballast, and the commercial AC power source, the fluorescent lamp ballast 153 (or directly from the commercial AC power source) is input to the illumination lamp 100. The frequency of the transmitted signal is a low frequency of about 50-60 Hz. Therefore, the inverter detection circuit 51 can detect whether or not the fluorescent lamp stabilizer 153 built in the lamp 150 is a fluorescent lamp inverter stabilizer based on the frequency of the signal input to the illumination lamp 100, for example. it can.

  When the inverter detection circuit 51 detects that the fluorescent lamp stabilizer 153 incorporated in the lamp 100 is a fluorescent lamp inverter stabilizer, the filter circuit 53 is bypassed by the switching circuit 54.

  Further, as shown in FIG. 7, a high frequency filter circuit 53 b may be provided separately from the filter circuit 53. When the inverter detection circuit 51 detects that the fluorescent lamp ballast 153 incorporated in the lamp 150 is a fluorescent lamp inverter ballast, it may be passed through a high-frequency filter circuit by a switching circuit. Therefore, even if the filter circuit 53 and the drive circuit 56 are bypassed, the problem of EMI noise does not occur, and an appropriate current that does not exceed the rating can be supplied to the LED module 57. Moreover, the fluorescent lamp ballast 153 may be provided with a function corresponding to a filter circuit.

  Further, as illustrated in FIG. 8, the drive circuit 56 may be configured to be bypassable by a switching circuit. The switching circuit can be configured by, for example, a relay or a semiconductor switch (FET or the like). When the filter circuit 53 is bypassed by the switching circuit, the output of the rectifier circuit 55 is supplied to the LED module 57 by bypassing the drive circuit 56. Also in the illuminating lamp of FIG. 8, when the inverter detection circuit 51 detects that the fluorescent lamp stabilizer 153 built in the lamp 150 is a fluorescent lamp inverter stabilizer, the switching circuit causes the high frequency filter You may make it pass a circuit.

  Further, as shown in FIG. 9, a configuration may be adopted in which a second drive circuit 56b is provided separately from the drive circuit 56a. When the inverter detection circuit 51 detects that the fluorescent lamp stabilizer 153 built in the lamp 150 is a fluorescent lamp inverter stabilizer, the inverter detection circuit 51 may pass through a high-frequency filter circuit using a switching circuit.

  Furthermore, as illustrated in FIG. 10, the illumination lamp 100 can be provided with a power saving switching circuit 60. As will be described in detail later, the power saving switching circuit 60 performs power consumption reduction control according to the amount of current when the illuminating lamp 100 is mounted on an inverter-type lamp.

  The inverter detection circuit 51 does not detect that the fluorescent lamp ballast 153 is a fluorescent lamp inverter ballast, and the rapid detection circuit 61 does not detect that the fluorescent lamp ballast 153 is a fluorescent lamp rapid ballast. In this case, the fluorescent lamp stabilizer 153 recognizes that the illuminating lamp 100 is directly connected to the commercial AC power supply without passing through the fluorescent lamp glow stabilizer or the fluorescent lamp stabilizer 153. In this case, the signal input to the illuminating lamp 100 via the base is supplied to the rectifier circuit 55 via the filter circuit 53. The output of the rectifier circuit 55 is supplied to the LED module 57 via the drive circuit 56. The specification of the drive circuit 56 is selected to be compatible with a fluorescent light glow ballast and a commercial AC power supply.

  Furthermore, as shown in FIG. 11, the above-described filter circuit 53 and high-frequency filter circuit 53b may be omitted.

  Next, as described above, the illuminating lamp 100 includes the power saving switching circuit 60 that performs power consumption reduction control according to the amount of current when the illuminating lamp 100 is mounted on an inverter-type lamp. FIG. 12 is a circuit diagram of the power saving switching circuit 60 provided in the illuminating lamp 100. As illustrated in FIG. 12, the power saving switching circuit 60 includes a resistor 70, a current detection circuit 71, a power saving switching circuit 60, and first to third reactive current capacitor circuits 73 to 75. The first to third reactive current capacitor circuits 73 to 75 are examples of the reactive current generating unit. In this example, it is described that a capacitor, which is a capacitor, is used, but an inductor may be used instead of the capacitor. A capacitor or inductor and an impedance element may be used in combination.

  The resistor 70 has a low resistance value (low resistance), and is inserted and connected in series with the power supply wiring. The resistor 70 is a resistor for detecting the amount of current flowing through the power supply wiring when the illuminating lamp 100 is mounted on an inverter-type lamp. The current detection circuit 71 detects a potential difference (voltage) generated at both ends of the resistor 70 as the amount of current flowing through the power supply wiring when the illuminating lamp 100 is mounted on an inverter-type lamp. The current detection circuit 71 supplies a current amount detection output to the power saving switching circuit 60. The first to third reactive current capacitor circuits 73 to 75 are independent three (three-stage configuration) reactive current capacitor circuits. The power saving switching circuit 60 selectively connects the first to third reactive current capacitor circuits 73 to 75 to the power supply wiring according to the current amount of the power supply wiring detected by the current detection circuit 71. As a result, according to the amount of current flowing through the power supply wiring, a part of the output from the inverter ballast can be returned to the inverter ballast as an invalid current, and power saving can be achieved.

  More specifically, the first reactive current capacitor circuit 73 includes a first circuit including a first reactive current capacitor 73C1 and a first switch 73S1, a second first reactive current capacitor 73C2, and A second circuit including the second switch 73S2 is included. One end of the first reactive current capacitor 73C1 of the first circuit is connected to the power supply wiring (white) on the cap member 1a side. The other end of the first reactive current capacitor 73C1 is connected to the power supply wiring (black) on the cap member 1b side. The first switch 73S1 is inserted and connected in series to a connection line that connects one end of the first reactive current capacitor 73C1 and the power supply wiring (white) on the cap member 1a side.

  Similarly, the second reactive current capacitor 73C2 of the second circuit of the first reactive current capacitor circuit 73 has one end connected to the power supply wiring (black) on the cap member 1a side. The second reactive current capacitor 73C2 has the other end connected to the power supply wiring (white) on the cap member 1b side. The second switch 73S2 is inserted and connected in series with a connection line connecting the other end of the second reactive current capacitor 73C2 and the power supply wiring (white) on the cap member 1b side.

  That is, the first reactive current capacitor circuit 73 includes a first circuit having a first reactive current capacitor 73C1 and a first switch 73S1, a second reactive current capacitor 73C2 and a second switch 73S2. The second circuit is provided as a pair.

  The same applies to the second reactive current capacitor circuit 74 and the third reactive current capacitor circuit 75. The second reactive current capacitor circuit 74 includes a first circuit having a first reactive current capacitor 74C1 and a first switch 74S1, and a second circuit having a second reactive current capacitor 74C2 and a second switch 74S2. Two circuits are provided as a pair. The first circuit is connected to the power supply wiring so as to connect the first reactive current capacitor 74C1 to the neutral side of the power supply wiring, and the second circuit is connected to the second invalidity on the line side of the power supply wiring. It is connected to the power supply wiring so as to connect the current capacitor 74C2.

  The third reactive current capacitor circuit 75 includes a first circuit having a first reactive current capacitor 75C1 and a first switch 75S1, and a second reactive current capacitor 75C2 and a second switch 75S2. The second circuit is provided as a pair. The first circuit is connected to the power supply wiring so as to connect the first reactive current capacitor 75C1 to the neutral side of the power supply wiring, and the second circuit is connected to the second invalid current on the line side of the power supply wiring. It is connected to the power supply wiring so as to connect the current capacitor 75C2.

  Normally, in the case of a straight tube fluorescent lamp connected to a ballast, the voltage between the first and second electrode terminals of one socket is about 5 volts. On the other hand, the voltage between the first electrode terminal of one socket and the second electrode terminal of the other socket is about 100 volts. Therefore, the potential difference between the first and second electrode terminals of one socket connected to the ballast and the potential difference between the first electrode terminal of one socket and the second electrode terminal of the other socket are: It is regarded as the same potential difference.

  In the case of a straight tube fluorescent lamp, filaments are connected to the pair of electrode terminals of one socket and the pair of electrode terminals of the other socket, respectively, so as to be electrically symmetrical. For this reason, even if the insertion of one socket and the other socket with respect to the lamp is reversed left and right, no problem arises in electrical connection.

  On the other hand, in the case of the illuminating lamp 100 using LEDs, the reactive current capacitors (73c1, 73C2, etc.) and the switches (73S1, 73S2, etc.) provided in the reactive current capacitor circuits 73 to 75 are provided. If the circuit of the pair is provided only on one socket side, there arises a disadvantage that the power saving effect described later cannot be obtained depending on how the illuminating lamp 100 is attached to the lamp. That is, it is assumed that the power saving effect is currently obtained by the above-described pair of circuits by mounting the illumination lamp 100 on the lamp. Next, it is assumed that the illuminating lamp 100 is attached to the lamp in the opposite direction. In the case where the above-described pair of circuits is provided only on one socket side, the power saving effect cannot be obtained by mounting the illuminating lamp 100 in the opposite direction with respect to the lamp.

  For this reason, the above-described pair of circuits includes the above-described pair of circuits connected to the neutral side of the power supply wiring and the power supply wiring for each of the first to third reactive current capacitor circuits 73 to 75. The circuit of the above-mentioned pair connected to the line side is provided (symmetrical). Thereby, the user can mount the illuminating lamp 100 on the lamp without worrying about the mounting direction.

  Next, the power saving switching circuit 60 controls the first to third reactive current capacitor circuits 73 to 75 to be turned on in accordance with the current amount of the power supply wiring detected by the current detection circuit 71. Specifically, as an example, the power saving switching circuit 60 includes a first reactive current capacitor when the amount of current detected by the current detection circuit 71 is equal to or greater than the amount of current indicated by a predetermined threshold. The circuit 73 is turned on, and the time information from the timer is used to count the time when the current amount exceeds a predetermined amount. When the time when the current amount is equal to or greater than the predetermined current amount is the first predetermined time, the power saving switching circuit 60 further controls the second reactive current capacitor circuit 74 to be turned on. That is, in this case, the power saving switching circuit 60 controls the first and second reactive current capacitor circuits 73 and 74 to be turned on.

  Further, even after both the first and second reactive current capacitor circuits 73 and 74 are turned on, the power saving switching circuit 60 continues to count the time when the predetermined current amount is exceeded, and the predetermined current amount. When the above time becomes the second predetermined time, the third reactive current capacitor circuit 75 is further turned on. In other words, in this case, the power saving switching circuit 60 controls all of the first to third reactive current capacitor circuits 73 to 75 to be turned on. As a result, the number of capacitors connected to the power supply wiring is sequentially increased every time when the amount of current of the power supply wiring detected by the current detection circuit 71 exceeds the predetermined threshold.

  The power saving switching circuit 60 turns off all of the first to third reactive current capacitor circuits 73 to 75 when the current amount of the power supply wiring becomes less than a predetermined current amount. Then, when the current amount of the power supply wiring becomes equal to or larger than the predetermined current amount again, the power saving switching circuit 60 performs the first to third invalidations according to the time when the current amount is equal to or larger than the predetermined current amount. The current capacitor circuits 73 to 75 are sequentially turned on.

  More specifically, as an example, the first to third reactive current capacitor circuits 73 to 75 are so-called relay circuits. When it is detected by the current detection circuit 71 that the current amount of the power supply wiring exceeds a predetermined threshold, first, the first reactive current capacitor circuit 73 becomes effective among the above-described pairs of circuits. The paired switch is turned on, and the reactive current capacitor circuit is connected to the power supply wiring. That is, when the circuit of the pair of the first reactive current capacitor 73C1 and the first switch 73S1 is effective corresponding to the mounting direction of the illumination lamp 100, the first switch 73S1 is turned on and the second switch The switch 73S2 is turned off, and only the first reactive current capacitor 73C1 is connected to the power supply wiring.

  Further, when the first predetermined time elapses after the current detection circuit 71 exceeds the predetermined threshold current amount of the power supply wiring, the second reactive current capacitor circuit 74 is effective in this example. The first switch 74S1, which is a pair of circuits, is turned on, the second switch 74S2 is turned off, and only the first reactive current capacitor 74C1 is connected to the power supply wiring. Further, when the second predetermined time has elapsed after the current detection circuit 71 has exceeded the predetermined threshold value, the third reactive current capacitor circuit 75 is effective in this example. The first switch 75S1, which is a pair of circuits, is turned on, the second switch 75S2 is turned off, and only the first reactive current capacitor 75C1 is connected to the power supply wiring.

  When the reactive current capacitor is connected to the power supply wiring in this way, a part of the output from the inverter ballast corresponding to the capacity of the connected reactive current capacitor can be returned to the inverter ballast side as a reactive current. . For this reason, the current flowing through the power supply wiring can be reduced to save power.

  When the current amount of the power supply wiring becomes less than the predetermined current amount, the switches 73S1, 73S2, 74S1, 74S2, 75S1, and 75S2 of the first to third reactive current capacitor circuits 73 to 75 are All turned off. As a result, the capacitors 73C1, 73C2, 74C1, 74C2, 75C1, and 75C2 are all disconnected from the power supply wiring. In this example, the circuit of each pair of the first reactive current capacitors 73C1, 74C1, and 75C1 and the first switches 73S1, 74S1, and 75S1 corresponding to the mounting direction of the illuminating lamp 100 is operated. When the mounting direction of the illuminating lamp 100 is reversed, the circuit of each pair of the second reactive current capacitors 73C2, 74C2, and 75C2 and the second switches 73S2, 74S2, and 75S2 operate.

  As described above, in the lighting device 200 according to the embodiment, when the illuminating lamp 100 is mounted on a lamp provided with an inverter ballast, the resistance 70 and the current detection circuit 71 are used to calculate the amount of current flowing through the power supply wiring. To detect. Then, when the power saving switching circuit 60 has a current amount greater than or equal to a predetermined amount, the reactive current capacitor connected to the power supply wiring according to the time continuously elapsed after the current amount has exceeded the predetermined amount. Adjust the capacity (number). As a result, depending on the capacity of the connected reactive current capacitor, a part of the commercial AC current can be recirculated to the inverter stabilizer side as a reactive current, reducing the current flowing through the power supply wiring and saving power. Can be achieved.

  Next, FIG. 13 shows a circuit diagram of a resonant rapid ballast. The resonant rapid ballast includes a thermal fuse 81, a choke transformer 82, and a noise prevention capacitor 83 as shown in FIG. The symbol “n1” of the choke transformer 82 indicates the primary winding, and the symbol “n2” indicates the secondary winding. The resonant rapid ballast has a phase adjustment circuit 86 including a phase advance capacitor 84 and a resistor 85 connected in parallel to the phase advance capacitor 84. FIG. 14 is a cross-sectional view of a portion of a resonant rapid ballast. As shown in FIG. 14, the thermal fuse 81 to the phase adjustment circuit 86 are housed in a case 89 together with a filler 88.

  The illumination lamp 100 has the resistance circuit 52 that generates an impedance corresponding to the filament of the fluorescent lamp as described above. Thereby, the illumination lamp 100 can respond to an inverter ballast. When the LED module 57 and the constant current control circuit provided in the illuminating lamp 100 are considered as pseudo resistances, the resonant rapid ballast equivalently has a circuit configuration shown in FIG. A resistor 90 inserted in series with the primary winding n1 of the choke transformer 82 represents a resistance component corresponding to the LED module 57 and the constant current control circuit.

  Further, the filament resistor 52a and the filament resistor 52b, each having one end connected to each end of the resistor 90, indicate the above-described resistor circuit 52 that generates an impedance corresponding to the filament. In the resistance circuit 52, the resistance values of the filament resistance 52a and the filament resistance 52b are adjusted so that a predetermined voltage division ratio is obtained. The other end of the filament resistor 52a is connected to one end of a phase advance capacitor 84 and a resistor 85 of the phase adjustment circuit 86 via the secondary winding n2 of the choke transformer 82, respectively. Further, the other end of the filament resistor 52b is connected to the other end of the phase advance capacitor 84 and the resistor 85 of the phase adjustment circuit 86, respectively.

  In such a resonant rapid ballast, a voltage equal to the voltage applied to the LED module 57 and the constant current control circuit is applied to each of the filament resistors 52a and 52b, the choke transformer 82, and the phase adjustment circuit 86. As the voltage to be applied, the higher the resistance value of the filament resistors 52a and 52b, the higher the voltage applied due to the voltage division ratio. Although it is an example, the resistance value of each filament resistance 52a, 52b of the illuminating lamp 100 is set to a resistance value larger than the resistance value (several Ω) of the filament of a normal fluorescent lamp.

  In a rapid ballast having a plurality of types, the “resonant rapid ballast” has such a configuration, so that a voltage applied to the filament (between the caps 1a and 1b) as compared to a normal rapid ballast. (Filament voltage) is high. Specifically, in the case of a normal rapid ballast, the filament voltage is about 10 Vpp. On the other hand, in the case of a resonance type rapid ballast, it is about 400 Vpp (no filament resistance, voltage is reduced by load resistance) due to winding coupling, which is extremely different from a normal rapid ballast. The lighting device 200 according to the embodiment detects such a difference in filament voltage and discriminates between a normal rapid ballast and a resonant rapid ballast.

  FIG. 16 is a block diagram of the illuminating lamp 100 in which a discrimination function for discriminating between a normal rapid ballast and a resonant rapid ballast is clearly shown. As shown in FIG. 16, the illuminating lamp 100 includes a voltage detection circuit 58 and a mode switching unit 93 provided in the drive circuit 56. The voltage detection circuit 58 includes a rapid detection circuit 91 that detects a rapid ballast based on the above-described voltage difference. Further, the voltage detection circuit 58 includes a rapid cancel circuit 92 that detects a resonance type rapid ballast based on the above-described voltage difference. The mode switching unit 93 of the drive circuit 56 performs switching between drive modes (constant current mode and fixed switching mode) for driving the LED module 57 in accordance with detection signals from the rapid detection circuit 91 and the rapid cancellation circuit 92.

  FIG. 17 shows a circuit diagram of the voltage detection circuit 58. As shown in FIG. 17, the voltage detection circuit 58 includes a voltage limiting capacitor 101, a photocoupler 102, a Zener diode 103, a field effect transistor (FET) 104, a current adjusting resistor 105, a voltage dividing resistor 106, and A voltage dividing resistor 107 is provided. The Zener diode 103 and the field effect transistor (FET) 104 are examples of switching elements.

  When the illuminating lamp 100 is connected to the resonant rapid ballast, the voltage limiting capacitor 101 steps down the filament voltage that becomes high as described above. As an example, the voltage limiting capacitor 101 steps down the filament voltage, which is about 400 Vpp when connected to the resonant rapid ballast, to about 50 Vpp.

  The photocoupler 102 corresponds to the rapid detection circuit 91. The photocoupler 102 is connected in series downstream of the voltage limiting capacitor 101. The photocoupler 102 operates when the illuminating lamp 100 is connected to a normal rapid ballast, and supplies a detection signal to the drive circuit 56 indicating that the illuminating lamp 100 is connected to the normal rapid ballast.

  The Zener diode 103 and the FET 104 correspond to the rapid cancel circuit 92. The cathode K of the Zener diode 103 is connected to the output terminal of the voltage limiting capacitor 101. The anode A of the Zener diode 103 is connected to the gate G of the FET 104. The drain D of the FET 104 is connected to the output terminal of the voltage limiting capacitor 101 via the current amount adjusting resistor 105. The source S of the FET 104 is connected to the drive circuit 56.

  Next, operations of the voltage detection circuit 58 and the drive circuit 56 will be described. When energization of the illuminating lamp 100 is started, the filament voltage is as follows according to the power supply mode. That is, when power is supplied to the illuminating lamp 100 by AC direct connection, although it depends on the wiring method, a filament voltage is not normally generated. Further, when power is supplied to the illuminating lamp 100 from the glow ballast, no filament voltage is generated.

  On the other hand, when power is supplied to the illuminating lamp 100 from a normal rapid ballast, a filament voltage of, for example, about 10 Vpp is generated via the voltage limiting capacitor 101. As the Zener diode 103, for example, a diode that generates an avalanche phenomenon when a voltage of 40 Vpp or more is applied is provided. In other words, the Zener diode 103 does not generate an avalanche phenomenon with a filament voltage when power is supplied from a normal rapid ballast, and is a filament voltage when power is supplied from a resonant rapid ballast. A Zener diode 103 that generates an avalanche phenomenon is provided.

  For this reason, when power is supplied from a normal rapid ballast, the photocoupler 102 corresponding to the rapid detection circuit 91 operates with a filament voltage of, for example, about 10 Vpp. Then, a detection signal indicating that the photocoupler 102 is connected to a normal rapid ballast is generated, and the generated detection signal is supplied to the drive circuit 56 through a path indicated by a dotted arrow in FIG. .

  The mode switching unit 93 of the drive circuit 56 switches the driving mode from the constant current mode to the fixed switching mode and drives the LED module 57 to be lit when supplied with a detection signal indicating that it is connected to a normal rapid ballast. To do. The constant current mode is a drive mode in which the LED module 57 is driven with a constant current regardless of load fluctuations. The fixed switching mode is a continuous switching mode with a fixed ON width, and the load current is a driving mode depending on the input.

  On the other hand, when power is supplied from the resonant rapid ballast, the filament voltage stepped down to, for example, 50 Vpp by the voltage limiting capacitor 101 is applied to the Zener diode 103 of the rapid cancel circuit 92. The 50 Vpp filament voltage causes an avalanche phenomenon in the Zener diode 103, and the filament voltage via the Zener diode 103 is divided by the voltage dividing resistor 106 and the voltage dividing resistor 107, and the gate G of the FET 104 of the rapid cancel circuit 92. To be applied. As a result, the FET 104 is turned on, and a detection signal indicating that the FET 104 is connected to the resonant rapid ballast is generated by a current flowing between the drain D and the source S of the FET 104 while bypassing the photocoupler 102. Some current is also added to this detection signal via the Zener diode 103 and the voltage dividing resistors 106 and 107. In FIG. 17, the signal is supplied to the drive circuit 56 through a path indicated by a one-dot chain line arrow.

  The mode switching unit 93 of the drive circuit 56 switches the drive mode from the fixed switching mode to the constant current mode and drives the LED module 57 to light up when a detection signal indicating that the resonance circuit is connected to the resonant rapid ballast is supplied. To do.

  As is clear from the above description, in the lighting device 200 according to the embodiment, when the illuminating lamp 100 is mounted on the lamp 150, the voltage (filament voltage) applied between the caps 1a and 1b is higher than a predetermined voltage. If the filament voltage is lower (for example, about 10 Vpp), the rapid detection circuit 91 of the voltage detection circuit 58 detects the lower filament voltage and supplies a detection signal to the drive circuit 56. When the low filament voltage detection signal is supplied, the mode switching unit 93 of the drive circuit 56 determines that the illuminating lamp 100 is connected to the normal rapid ballast and drives from the constant current mode to the fixed switching mode. The mode is switched and the LED module 57 is driven to light.

  On the other hand, in the lighting device 200 according to the embodiment, when the filament voltage is a filament voltage higher than a predetermined voltage (for example, 50 Vpp or more), the rapid detection circuit 91 of the voltage detection circuit 58 uses the high filament voltage. And a detection signal is supplied to the drive circuit 56. When the high filament voltage detection signal is supplied, the mode switching unit 93 of the drive circuit 56 determines that the illuminating lamp 100 is connected to the resonant rapid ballast and drives from the fixed switching mode to the constant current mode. The mode is switched and the LED module 57 is driven to light.

  Thereby, when the illuminating lamp 100 is connected to the resonant rapid ballast, the output current of the illuminating lamp 100 is increased, and the disadvantage that the power consumption and the illuminance are increased can be prevented. Therefore, the illumination device 200 according to the embodiment can enable optimal lighting control of the illumination lamp 100 corresponding to the power supply mode.

  The above-described embodiments are presented as examples, and are not intended to limit the scope of the present invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The embodiments and modifications of the embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1a Socket 1b Socket 51 Inverter detection circuit 55 Rectifier circuit 57 LED module 60 Power saving switching circuit 70 Resistance 71 Current detection circuit 73 1st reactive current capacitor circuit 73C1 1st reactive current capacitor 73C2 2nd reactive current capacitor 73S1 first switch 73S2 second switch 74 second reactive current capacitor circuit 74C1 first reactive current capacitor 74C2 second reactive current capacitor 74S1 first switch 74S2 second switch 75 third invalid Current capacitor circuit 75C1 First reactive current capacitor 75C2 Second reactive current capacitor 75S1 First switch 75S2 Second switch 91 Rapid detection circuit 92 Rapid cancellation circuit 93 Mode switching unit 100 Akirato 101 voltage limiting capacitor 102 photocoupler 103 zener diode 104 field effect transistor (FET)
105 Resistance for Current Adjustment 106 Voltage Dividing Resistor 107 Voltage Dividing Resistor 150 Lamp 200 Lighting Device

JP 2008-277188 A

Claims (7)

A semiconductor light emitting device;
A resistance circuit that generates an impedance equivalent to a filament;
A voltage detection circuit that detects a voltage applied to the resistance circuit and outputs a detection signal;
When the detection signal indicates that the voltage is connected to a resonant first rapid ballast, the semiconductor light emitting element is driven to light in a constant current mode, and the detection signal is the first rapid stabilization. And a drive circuit for lighting the semiconductor light emitting element in a fixed switching mode when indicating that the voltage is connected to a second rapid ballast other than the lamp. The voltage detection circuit includes:
It operates when the voltage applied to the resistance circuit is a voltage indicating that it is connected to the first rapid ballast of resonance type, and is a voltage connected to the first rapid ballast A rapid cancel circuit for outputting the detection signal indicating:
The voltage applied to the resistor circuit operates when the voltage indicates that it is connected to the second rapid ballast, and indicates that the voltage is connected to the second rapid ballast The illuminating lamp according to claim 1, further comprising a rapid detection circuit that outputs a detection signal. The voltage detection circuit has a voltage limiting capacitor that steps down the voltage applied to the resistance circuit to a predetermined voltage,
The rapid cancel circuit is a switching element that is turned on when a voltage stepped down by the voltage limiting capacitor is a voltage connected to the rapid ballast and generates a current flow that bypasses the photocoupler. And generating the detection signal indicating a voltage connected to the resonance-type first rapid ballast with a current bypassing the photocoupler,
The rapid detection circuit is a photocoupler that operates at a voltage stepped down by the voltage limiting capacitor, and generates the detection signal indicating that the voltage is connected to the second rapid ballast. The illuminating lamp according to claim 2. The switching element of the rapid cancel circuit includes a Zener diode that is turned on when the voltage stepped down by the voltage limiting capacitor is a voltage connected to the resonance-type first rapid ballast, and a Zener A transistor element that is turned on at a voltage when the diode is turned on, and is a voltage that flows through the turned on transistor element and that bypasses the photocoupler and is connected to the first rapid ballast. The illuminating lamp according to claim 3, wherein the detection signal is generated. An illuminating lamp according to any one of claims 1 to 4,
A lamp for mounting the illumination lamp;
A lighting device comprising: A semiconductor light emitting device;
A resistance circuit that generates an impedance equivalent to a filament;
A voltage detection circuit that detects a voltage applied to the resistance circuit and outputs a detection signal;
When the detection signal indicates that the voltage is connected to a resonant first rapid ballast, the semiconductor light emitting element is driven to light in a constant current mode, and the detection signal is the first rapid stabilization. A drive circuit for lighting and driving the semiconductor light emitting element in a fixed switching mode, when indicating a voltage connected to a second rapid ballast other than
A lighting control circuit comprising: A driving method of an illuminating lamp comprising a semiconductor light emitting element and a resistance circuit that generates an impedance equivalent to a filament,
A voltage detection circuit detects a voltage applied to the resistance circuit and outputs a detection signal;
When the detection signal indicates that the voltage is connected to a resonant first rapid ballast, the drive circuit drives the semiconductor light emitting element to light in a constant current mode, and the detection signal is When the voltage indicating that the voltage is connected to a second rapid ballast other than the first rapid ballast, the drive circuit lights and drives the semiconductor light emitting element in a fixed switching mode. Driving method.

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