JP2008210647A - Led type marker light lighting device, led type marker light, and led type marker light inspection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturizable LED type marker light lighting device. <P>SOLUTION: This LED type marker light lighting device B is provided with: a lighting circuit part of a rectifier device 30 lighting a light emitting diode 40; a first current supply circuit part 63 supplying a current to the rectifier device 30 when a current not smaller than a predetermined value is supplied thereto via an insulation type current transformer 70 for high input arranged in an inspection device 73; a second current supply circuit part 64 supplying a current to the rectifier device 30 via a regular current transformer 60 when a current smaller than the predetermined value is supplied thereto from an alternating constant current power source 91; and a changeover part changing over the first current supply circuit part 63 to the second current supply circuit part 64 and vice versa depending on the current supplied from the alternating constant current power source. Since only the current transformer 60 dedicated to lighting of 10% of a rated value must be provided according to this embodiment, the lighting device can be miniaturized. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an LED-type marker lamp lighting device, an LED-type marker lamp, and an LED-type marker lamp inspection system in which a light emitting diode is lit at a predetermined luminous intensity ratio.

  2. Description of the Related Art In recent years, LED beacon lamps that use light emitting diodes as light sources instead of incandescent bulbs have been studied for use in airport lamps. This is because, if a light emitting diode is used as the light source, power saving and long life are achieved, so that various effects such as significant reduction in maintenance costs can be obtained. Moreover, since it takes time to replace all of the incandescent marker lamps with LED type marker lamps, use of the incandescent marker lamps in combination with existing incandescent lamps has been studied.

  Here, the light output characteristic with respect to the current in the incandescent bulb and the light output characteristic with respect to the current in the light emitting diode will be described. The light output characteristics with respect to the current in the incandescent bulb and the light output characteristics with respect to the current in the light emitting diode are greatly different as shown in FIG. In other words, the incandescent lamp has an optical output that changes exponentially with respect to the current. For example, the incandescent lamp is rated on (rated 100%) at a rated current of 6.6 A and rated at 4.8 A (72.7% of the rated current). Is lit at a luminous intensity ratio of 10%. On the other hand, the light output of the light emitting diode linearly changes with respect to the current, is lit at a rated current of 6.6A (100% lit), and at a luminous intensity ratio of 72.7% rated at 4.8A. Illuminated. That is, if the light is to be lit at a luminous intensity ratio of 10% of the rated value like an incandescent bulb, the current must be 0.66 A (10.0% of the rated current).

Therefore, in such a situation, for example, when an LED constant current power source is supplied with a low light intensity 4.8 A current from an AC constant current power supply, the light intensity is substantially the same as that of a conventionally used light bulb type light. The light output of the light emitting diode is adjusted so as to be (see, for example, Patent Document 1).
JP 2006-139755 A

  In general, in the case of a low-intensity beacon light such as a guideway beacon light, the actual situation is that the light is lit at a light intensity ratio of 10% of the rated value. In other words, when LED-type indicator lamps are designed in consideration of 100% rated luminous intensity lighting that is not used in actual operation, this is a current-transforming means for adjusting the light output of the light-emitting diode that can cope with rated lighting. There is a problem that an insulated current transformer must be used.

  The above problem will be specifically described. FIG. 4 is a diagram showing an example of an LED-type marker lamp having an LED-type marker lamp lighting device A for low luminous intensity. In the LED type marker lamp lighting device A, one end connection portion 80a and the other end connection portion 80b are provided at both ends of the secondary winding 50b of the current transformer 50, respectively, and an intermediate connection portion 80c is provided in the middle of the secondary winding 50b. The one end connection portion 50a and the other end connection portion 50b, or the one end connection portion 50a and the intermediate connection portion 50c are connected to the input side of the rectifier 30 by the switch SW1. The light emitting diode 40 and the resistor element R1 are connected in series on the output side of the rectifier 30.

  In actual operation of such an LED type indicator lamp, the input side of the rectifier 30 is connected to one end connection portion 80a and the other end connection portion 80b of the current transformer 50, and the primary winding 50a of the current transformer 50 includes A predetermined current (4.8 A) subtracted from the rated current (6.6 A) is supplied from the AC constant current power supply 10. The light emitting diode 40 is turned on at a predetermined luminous intensity ratio (10%) through a predetermined current (70 mA).

  On the other hand, since the LED-type indicator lamp is defined in the standard at the time of periodic inspection (maintenance), it must be inspected in a rated 100% lighting state. Therefore, it is removed from the road surface installation and carried to the inspection site. At the inspection site, the input side of the rectifier 30 is connected to the one end connection portion 50a and the intermediate connection portion 80c of the current transformer 50, and the primary winding 50a is inspected. The current output from the AC constant current power supply is supplied, and the light output of the light emitting diode 40 is inspected.

  Therefore, if an LED-type marker lamp lighting device is designed so that it can be used for inspection, it is necessary to incorporate functions that are not used at all in actual operation. However, there is a problem that the circuit portion is increased in size and the size of the entire lamp body is limited.

  The present invention has been made in view of the above, and provides an LED-type marker lamp lighting device that can be reduced in size, and an LED-type marker lamp that can also reduce the size of the lamp body as the lighting device is reduced in size, Furthermore, it aims at providing the LED type | mold marker lamp inspection system which can be made cheap comprehensively as a system.

  The LED-type marker lamp lighting device according to claim 1 includes: a light emitting diode; a lighting circuit portion for lighting the light emitting diode; and an AC constant current power source having a predetermined value via an insulating high-input current transformer provided outside. A first current supply circuit unit that supplies current to the lighting circuit unit when the above current is supplied; an insulation type current transformer, and a current less than a predetermined value is supplied from an AC constant current power source A second current supply circuit unit for supplying current to the lighting circuit unit via the common current transformer; a first current supply circuit unit and a second current supply circuit according to a current value supplied from an AC constant current power source with variable output And a switching unit that switches between the units.

  The switching unit may be either mechanically or automatically switched. For example, in the case of mechanical, it is manually switched according to the current from the AC constant current power supply. For example, in the case of automatic, the current is supplied in a portion preceding the second current supply circuit unit. A value is detected, and the first current supply circuit unit and the second current supply circuit unit can be appropriately selected according to the detection result.

  The present invention separates the current transformer used when the current value from the AC constant current power source is larger than a predetermined value and the current transformer used when the current value from the AC constant current power source is less than the predetermined value, The supply path to the lighting circuit of the light emitting diode is varied according to the current value. In other words, the regular current transformer used for the lighting device can be reduced in size, and when compared with the case where the current value from the AC constant current power source is larger than the predetermined value and smaller when the current transformer is shared, In particular, since the number of secondary windings of the regular current transformer is remarkably reduced, losses due to the windings can be reduced, and power saving can be achieved.

  According to a second aspect of the present invention, there is provided an LED type marker lamp comprising: the LED type marker lamp lighting device according to the first aspect; and a lamp body provided with the LED type marker lamp lighting device.

  The high-input current transformer is provided separately from the LED-type marker lamp lighting device, and is preferably outside the lamp and disposed separately from the marker lamp. As a result, it is not necessary to provide a space for the high-output current transformer in the lamp body, so that the LED type marker lamp can be further miniaturized.

  According to this invention, it has the effect of Claim 1.

  According to a third aspect of the present invention, there is provided an AC constant current power supply for inspection that supplies a current of a predetermined value or more; an LED type indicator light according to the second aspect; and an insulated high-input current transformer. And an inspection device for supplying current to the marker lamp via the high-input current transformer when a current of a predetermined value or more is supplied from the AC constant current power source for inspection.

  The AC constant current power source for inspection may be provided integrally with the inspection device or may be provided separately.

  According to the present invention, by providing an inspection device for inspection, it is not necessary to have an insulated high-input transformer for each marker lamp. Therefore, it is comprehensive when using a plurality of LED type marker lamps. Cost can be reduced.

  According to the first aspect of the present invention, since the common current transformer used for the lighting device can be reduced in size, the lighting device itself can be reduced in size. Compared with the case where the current transformer is shared between the case where the current value from the AC constant current power supply is larger and smaller than the predetermined value, the loss due to the winding of the common current transformer can be suppressed, thus saving power. Can be achieved.

  According to the invention described in claim 2, in addition to the effect described in claim 1, the LED type marker lamp can be miniaturized.

  According to the third aspect of the present invention, since the inspection device is provided, it is not necessary to have an insulated high-input transformer for each of the marker lamps. Cost reduction.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing an LED type indicator lamp lighting device of the present embodiment, FIG. 2 is a cross-sectional view showing an LED type indicator lamp having the lighting device of FIG. 1, and FIG. 3 shows light output characteristics of an incandescent bulb and an LED. FIG. 4 is an explanatory view showing an example of an LED type indicator lamp lighting device used for explaining the problem of the present invention.

  In FIG. 1, an LED-type marker lamp lighting device B includes a current transformer 60 that is a normal current transformer, a rectifier 30 that is a lighting circuit unit and also has a surge absorption circuit and the like on the side of the light-emitting diode 40, which will be described later, a light-emitting diode 40, and a switching device. SW1, SW3, SW4, and SW5, and a first current supply circuit unit 63 and a second current supply circuit 64.

  More specifically, the LED-type marker lamp lighting device B is supplied with SW2 and SW3 to the input parts B1 and B2 to which constant current is supplied from either the constant current power supply 91 during operation or the constant current power supply 90 during inspection. Is connected.

  SW2 and SW3 are connected to the contact 2a and the contact 3a when a rated current 6.6A, which is a current value equal to or greater than a predetermined value, is supplied to B1 and B2 from the constant current power supply 90 for inspection. It is like that. Similarly, when the rated current is supplied from the constant current power source 90 for inspection, the SW4 and SW5 contacts are connected to 4a and 5a.

  And the 1st electric current supply circuit parts 63 and 63 are comprised by the wiring part connected by contact 2a and 4a, and the wiring part connected by contact 3a and 5a.

  SW2 and SW3 are connected to the contact 2b and the contact 3b when 4.8A, which is a current value equal to or less than a predetermined value, is supplied from the constant current power supply 91 during actual operation, which is a normal operation, to B1 and B2. It is supposed to be. Similarly, when the rated current is supplied from the constant current power supply 91 in actual operation, the SW4 and SW5 contacts are connected to 4b and the contact 5b.

  A current transformer 60 is provided between the contact 2b and the contact 4b and between the contact 3b and the contact 5b. The primary winding 61 side of the current transformer 60 is connected to the contacts 2b and 4b, and the secondary winding 62 side is connected to the contacts 4b and 5b. The contacts 2b, 3b, 4b, 5b, The current transformer 60 and the wiring portion connecting them constitute a second current supply circuit unit.

  The rectifier 30 is connected to SW4 and SW5, and the light emitting diode 40 is connected in series to the output side of the rectifier 30.

  On the other hand, a high-input current transformer 70 for inspection is provided in an inspection device 73 that is separate from the LED-type marker lamp lighting device B and is separate from the marker lamp 1 described later. The high-input current transformer 70 has a primary winding 71 side connected to a constant current power supply 90 for inspection, and a secondary winding 72 side can be connected to the input portions B1 and B2 of the LED type indicator lamp lighting device B. It is provided to become.

  Next, the LED-type marker lamp 19 for low light intensity provided with the LED-type marker lamp lighting device B will be described.

  The LED type marker lamp 19 shown in FIG. 2 has an LED type marker lamp lighting device B shown in FIG. 1 and a lamp body 20 in which the LED type marker lamp lighting device B is arranged.

  The lamp body 20 is made of, for example, aluminum (Al), and a protruding portion 21 protruding inward is formed in a substantially cylindrical shape inside the one end portion 20a. A storage box 22 made of, for example, aluminum (Al) is disposed inside. A current box 60 and a lighting unit 23 are stored in the storage box 22. The lighting unit 23 includes a circuit component in which the current transformer 60 and the light emitting diode 40 are removed from the LED type marker lamp lighting device B.

  A base plate 26 on which a light emitting diode 40 is mounted is fixed to the pedestal 24 at the top of the lamp body 20, and a substantially cylindrical enclosure 27 is disposed on the pedestal 24 so as to accommodate the light emitting diode 40. It is installed. Then, a translucent upper cover 28 having a shell shape and a predetermined thickness is fixed to the lamp body 20 so as to cover the pedestal 24 and the enclosure 27 of the lamp body 20.

  A substantially cylindrical foldable joint 29, a part of which is inserted into the other end 20b, is attached to the other end 20b of the lamp body 20. From the one end 29a of the foldable joint 29, The lead wire (not shown) connected to the primary winding 61 of the current transformer 60 is led out, and the lead portions of the LED type marker lamp lighting device B are input portions B1 and B2 at the tip of the lead wire. Terminals that are not used are arranged.

  The operation of this embodiment will be described with an example of numerical values.

  The LED type marker lamp 19 of the present embodiment is for low luminous intensity used for a guideway marker lamp, and is lit and used at a luminous intensity ratio of 10% of the rated value during operation. That is, since 4.8A, which is a current value equal to or smaller than a predetermined value, is supplied to B1 and B2 from the constant current power supply 90 in actual operation, SW2, SW3, SW4, and SW5 are connected to the respective contacts 2b, 3b, 4b, 5b. Connect to. Then, since the current transformer 60 is provided between the contact point 2b and the contact point 4b, the secondary winding is configured so that the current flows on the secondary side NSb of the current transformer 60 to a current value corresponding to the light emitting diode 40, for example, 70 mA. By the action of 62, a current is supplied to the rectifier 30 via the second current supply circuit unit 64, and the light emitting diode 40 is turned on.

  On the other hand, before the LED type indicator lamp 19 is installed or at the time of inspection once every several months, the LED type indicator lamp 19 is inspected in the rated lighting state defined in the standard at a different inspection site from the installation location.

  At the time of inspection, when a rated current 6.6 A, which is a current value equal to or greater than a predetermined value, is supplied from the inspection constant current power supply 91 to the high-input current transformer 70, In the secondary side NPa, the secondary winding 72 acts so as to change the current to, for example, 700 mA commensurate with the rated 100% lighting of the light emitting diode 40, and this 700 mA is supplied to B1 and B2. In such a state, each of SW2, SW3, SW4 and SW5 is connected to each of the contacts 2a, 3a, 4a and 5a, via the first current supply circuit units 63 and 63. A current is supplied to the rectifier 30 so that the light emitting diode is turned on at 100% of the rated value, and a predetermined inspection is performed.

  Here, the case where the current transformer 50 shown in FIG. 4 is shared between the actual operation and the inspection and the case of the present embodiment will be described by exemplifying numerical values.

  Assuming that the primary winding of the conventional current transformer 50 is NP, the actual operation side of the secondary winding is NS2, and the inspection side of the secondary winding is NS1, first, the conventional current transformer 50 has the maximum NP that can be supplied. The NS1 needs a wire diameter corresponding to 700 mA corresponding to 100% lighting of the light emitting diode 40. Subsequently, considering the actual operation time, NS2 may have a wire diameter corresponding to 70 mA corresponding to 10% lighting of the light emitting diode 40, and therefore may have a relatively smaller wire diameter than NS1, but NP is shared with the time of inspection. Therefore, the desired current-transforming action cannot be obtained unless the number of turns is several times greater than NS1 in relation to NP.

  On the other hand, in the current transformer 60 of the present embodiment, only 4.8 A is supplied from the AC constant current power supply 91 at the maximum in actual operation, and only 70 mA corresponding to 10% lighting of the light emitting diode 40 is supported. Since the design can be performed, if the primary winding of the current transformer 60 is NPa and the actual operation side of the secondary winding is NSb, the wire diameter of NPa is smaller than NP, and NSb is the number of turns in relation to NPa. Therefore, the number of turns is significantly reduced as compared with the number of turns of NS2.

  This means that the current transformer 60 is markedly different in the installation space required for the current transformer 50 in the LED type marker lamp lighting device A and the installation space required for the current transformer 60 in the LED type marker lamp lighting device B. It shows that it contributes to space saving. Even if the light source part can be made smaller than the conventional incandescent light bulb type marker lamp by using the light emitting diode 40, the LED marker lamp can be used when the arrangement space for the current transformer is increased. As a whole, it is difficult to reduce the size, but by reducing the size of the current transformer 60 as in the present embodiment, the LED type marker lamp 19 as a whole can be reduced in size.

  Further, the loss (mainly copper loss) due to the winding of the current transformer 60 is caused by the difference in the wire diameter between the NP of the current transformer 50 and the NPa of the current transformer 60 and the difference in the number of turns of NS2 of the current transformer 50 and NSb of the current transformer 60. This shows that the current transformer 60 can save more power than the loss caused by the winding of the transformer 50. And, it is very excellent in running cost using the LED type marker lamp 19 that power saving is achieved in actual operation in this way, and the LED type marker lamp 19 like this embodiment is Since a plurality of units are used at a time, the entire system has a large energy saving effect.

  In addition, according to the present embodiment, for example, an inspection apparatus 73 provided with a separate high input current transformer 70 for inspection is installed in an inspection site, so that the inspection apparatus 73 including the high input current transformer 70 is an LED type. Compared with the number of marker lamps 19, the number of marker lamps 19 can be significantly reduced. In a system using a plurality of LED type marker lamps 19, a large cost reduction can be achieved overall.

  It should be noted that the switching operation of each SW in the present embodiment may be one in which an input current value is detected and automatically switched, or may be switched mechanically.

Explanatory drawing which shows the LED type marker lamp lighting device of this embodiment Sectional drawing which shows the LED type marker lamp which has the lighting device of this embodiment Explanatory diagram showing light output characteristics of incandescent bulb and LED Explanatory drawing which shows the LED type marker lamp lighting device of an example used in order to demonstrate the subject of this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 19 ... LED type indicator lamp, 20 ... Lamp body, 30 ... Rectifier which is lighting circuit part, 40 ... Light emitting diode, 60 ... Regular current transformer, 63 ... 1st electric current supply circuit part, 64 ... 2nd electric current supply Circuit part 70 ... High input current transformer 73 ... Inspection device 90 ... AC constant current power source for inspection SW2, SW3, SW4, SW5 ... Switching part B ... LED type indicator lamp lighting device,

Claims (3)

A light emitting diode;
A lighting circuit for lighting the light emitting diode;
A first current supply circuit unit that supplies current to the lighting circuit unit when a current of a predetermined value or more is supplied from an AC constant current power source via an insulated high-input current transformer provided outside;
A second current supply circuit unit having an insulated normal current transformer and supplying a current to the lighting circuit unit through the normal current transformer when a current less than a predetermined value is supplied from an AC constant current power supply;
A switching unit that switches between the first current supply circuit unit and the second current supply circuit unit according to the current value supplied from the output variable AC constant current power supply;
An LED type marker lamp lighting device characterized by comprising: An LED-type marker lamp lighting device according to claim 1;
A lamp body provided with an LED-type marker lamp lighting device;
LED-type marker lamp characterized by comprising. An AC constant current power supply for inspection that supplies a current exceeding a predetermined value;
An LED-type marker lamp according to claim 2;
An inspection apparatus that has an insulated high-input current transformer and supplies current to the marker lamp via the high-input current transformer when a current of a predetermined value or more is supplied from an AC constant-current power supply for inspection; ;
An LED-type marker lamp inspection system comprising:

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