JP2013061866A - Led marker lamp and marker lamp system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED marker lamp capable of reducing the difference in color tone from that of a bulb marker lamp within a range of adjustable brightness ratio.SOLUTION: An LED marker lamp 11b is used in place of a bulb marker lamp 11a on a marker lamp system 10 which adjusts the brightness of the bulb marker lamp 11a to a predetermined brightness ratio. The LED marker lamp 11b has an LED element 25 for generating the light to irradiate the outside. The LED marker lamp 11b is preset so that the color tone of the light irradiating the outside at a brightness of an intermediate value within an adjustable brightness ratio matches with the color tone of the light from the bulb marker lamp 11a irradiating the outside at a brightness of an intermediate value with in the same range of the brightness ratio.

Description

  Embodiments of the present invention relate to an LED type marker lamp using an LED element, and a marker lamp system using the LED type marker lamp.

  In airports, a plurality of beacon lights are installed on a runway, a taxiway, a runway, and the like, and a beacon light system that guides an aircraft by lighting control of these beacon lights is used.

  In this marker lamp system, an AC constant current power source from a constant current control device is supplied to a plurality of marker lamps connected to each isolation transformer via a plurality of isolation transformers. The luminous intensity of the guide lights that illuminate the white light installed on the runway, etc., is set in multiple levels as indicated in the Aviation Bureau Electricity Facilities Business Regulations established by the Aviation Bureau. The light intensity ratio is adjusted according to the length, time zone, etc., or according to weather conditions. By switching the output current according to the luminous intensity ratio in the constant current control device, the luminous intensity of the guide lamp is adjusted to the luminous intensity according to the input current.

  At present, as a marker lamp that irradiates white light installed on a runway or the like, a bulb-type marker lamp that uses a light bulb as a light source is often used. Since this light bulb type indicator lamp uses a light bulb, when the light intensity is adjusted by changing the current, the color tone of the light generated by the light bulb is likely to change. That is, when the current is increased and adjusted to a high luminous intensity, the color tone becomes white. On the other hand, when the current is decreased and adjusted to a low luminous intensity, the color tone becomes reddish and warm.

  Recently, LED-type marker lamps using LED elements as light sources have been proposed. For example, most LED-type marker lamps that emit colored light such as green light at a relatively low luminous intensity such as a guideway.

  In the case of a plurality of taxiways at the airport, it is also possible to proceed with construction to replace a plurality of existing light bulb-type marker lights with LED-type marker lights at once by restricting the use. However, in the case of a runway where there is only one at some airports, replacing multiple existing bulb-type beacon lights with LED-type beacon lights at one time limits the use of the runway. It may be difficult because of the cost, and may be difficult in terms of cost.

  Therefore, when introducing an LED-type marker lamp on a runway or the like, a plurality of existing bulb-type marker lamps are sequentially replaced with the LED-type marker lamp. Therefore, during the period until all the replacements are completed, a situation occurs in which the light bulb type marker lamp and the LED type marker lamp are mixed on the same runway.

JP 2006-65724 A

  In the case of an LED-type marker lamp, even if the light intensity is adjusted by changing the current, the change in color tone is not as great as that of the bulb-type marker lamp.

  Therefore, in a situation where a light bulb type indicator light and an LED type indicator light are mixed on the same runway, when the luminous intensity ratio is adjusted, a difference in color occurs between the light bulb type indicator light and the LED type indicator light. In other words, there is no problem in guiding the aircraft, but it is not preferable that the color difference is large.

  The problem to be solved by the present invention is to provide an LED-type marker lamp that can reduce the difference in color tone from a bulb-type marker lamp within an adjustable luminous intensity ratio range, and a marker lamp system using this LED-type marker lamp It is to be.

  The LED type marker lamp of the embodiment is an LED type marker lamp that is used in place of the bulb type marker lamp in a marker lamp system that adjusts the luminous intensity of the bulb type marker lamp to a predetermined luminous intensity ratio. The LED-type marker lamp has an LED element that generates light to be irradiated to the outside. The LED-type marker lamp has a color tone that illuminates outside at an intermediate value in the adjustable light intensity ratio range, and the light tone that the bulb-type marker lamp emits outside at an intermediate value in the same luminous intensity ratio range. It is set together.

  ADVANTAGE OF THE INVENTION According to this invention, it can anticipate providing the LED type marker lamp which can reduce the difference in a color tone with the light bulb type marker lamp within the light intensity ratio range which can be adjusted.

It is a circuit diagram of the LED type marker lamp and marker lamp system which show one Embodiment. It is a perspective view which shows the installation state of LED type marker lamp and a marker lamp system same as the above.

  Hereinafter, an embodiment will be described with reference to the drawings.

  As shown in FIG. 1, the marker lamp system 10 of this embodiment is an aerial marker lamp system that controls lighting of a plurality of marker lamps 11 installed on, for example, an airport runway. In this marker lamp system 10, a plurality of insulating transformers 13 such as rubber-coated insulating transformers are connected to a constant current control device 12 that supplies an AC constant current power source, and marker lamps 11 are respectively connected to the secondary sides of these insulating transformers 13. It is connected.

  FIG. 2 shows an example of a marker lamp system 10 using the marker lamp 11 as a center line lamp of the runway 15. A plurality of marker lamps 11 are embedded and installed along the runway 15 at predetermined intervals on the road surface of the runway 15, and a plurality of handholes 16 each storing an insulating transformer 13 are installed beside the runway 15. ing. Then, the constant current control device 12 and the insulation transformer 13 in each hand hole 16 are connected by a cable 17 buried in the ground, and the secondary side of the insulation transformer 13 in each hand hole 16 and each marker lamp 11 Are connected by a cable 18 buried in the ground.

  Then, the AC constant current power source from the constant current control device 12 is supplied to the marker lamp 11 through the insulation transformer 13, the light source of the marker lamp 11 is turned on, and the white light generated by this light source is supplied to the marker lamp 11 through a lens or the like. Irradiation is performed from the irradiation window 19 toward the direction along the runway 15. The constant current control device 12 switches the output current according to the luminous intensity ratio, whereby the luminous intensity of the marker lamp 11 is adjusted to the luminous intensity according to the current value.

  As shown in FIG. 1, the indicator lamp 11 includes a bulb-type indicator lamp 11a having a bulb 21 such as a halogen bulb and a lighting circuit 22 for lighting the bulb 21, an LED light source 23, and the LED light source 23. There is an LED-type marker lamp 11b having a lighting circuit 24 for lighting.

  The LED light source 23 of the LED-type marker lamp 11b includes, for example, a plurality of LED elements 25 that generate blue light, and a yellow phosphor that generates yellow light or orange light when excited by the blue light generated by the LED elements 25. And blue light and yellow light or orange light are mixed to generate white light.

  The constant current control device 12 is an existing device configured to control the lighting of the bulb-type marker lamp 11a, and switches the output current according to the light intensity ratio of the light emitted from the bulb-type marker lamp 11a to the outside. It is configured.

  The light intensity ratio is set in advance according to the length of the runway 15, time zone, etc., or according to weather conditions, etc. ing. For example, five levels of luminous intensity ratios of 100%, 25%, 5%, 1%, and 0.2% are set. These luminous intensity ratios indicate dimming levels, where 100% is all-lights on and 0% is off.

  The light intensity ratio actually used in the airport runway 15 is relatively low in the light intensity ratio of the maximum 100% or the minimum 0.2% of the adjustable light intensity ratio range. Often, the frequency of the light intensity ratio of 25%, 5%, and 1% of the intermediate value is high, and the frequency (lighting time) of the light intensity ratio of 5% of the third stage, which is the middle value among the five levels, is the highest. There are many situations.

  The bulb-type marker lamp 11a has a characteristic that the color tone is easily changed when the light intensity is adjusted by changing the current in order to use the bulb 21. That is, when the current is increased and adjusted to a high luminous intensity, the color tone becomes white. On the other hand, when the current is decreased and adjusted to a low luminous intensity, the color tone becomes reddish and warm.

  On the other hand, in the case of the LED-type marker lamp 11b, even if the luminous intensity is adjusted by changing the current, the change in color tone is not as great as that of the bulb-type marker lamp 11a.

  Therefore, the LED-type marker lamp 11b is a light intensity ratio that is frequently used in the airport runway 15 within the adjustable light intensity ratio range, and has an intermediate value light intensity within the adjustable light intensity ratio range. The color tone of the light radiated to the outside is set in accordance with the color tone of the light radiated to the outside by the light bulb-type marker lamp 11a at an intermediate value in the same luminous intensity ratio range. “To be set according to this color tone” means that the color tone may match, or the color tone may be close even if the color tone does not match.

  The light intensity ratio that is frequently used on the runway 15 at the airport is the light intensity ratio of 5%. Therefore, the color tone of the light emitted from the LED-type marker lamp 11b with the light intensity ratio of 5% is the light bulb. The type indicator lamp 11a is set so as to be closest to the color tone of light radiated to the outside at a luminous intensity ratio of 5%.

  That is, when the color tone of the light emitted from the LED-type marker lamp 11b to the outside is compared with the color tone of the light emitted from the bulb-type marker lamp 11a at the brightness obtained by changing the luminous intensity ratio, the luminous intensity ratio of 5% is obtained. It is set so that the two colors are closest in terms of light intensity.

  In order to set the color tone of the light emitted from the LED-type marker lamp 11b to the outside, the color tone can be arbitrarily set by the composition of the phosphor used in the LED light source 23. Therefore, the luminous intensity is 5%. What is necessary is just to select the LED light source 23 which mix | blended the fluorescent substance closest | closed to the color tone of the light which the bulb-type marker lamp 11a irradiates outside. The color tone may be set using other optical means such as a filter.

  Then, as shown in FIG. 2, when the LED-type marker lamp 11b is introduced into the runway 15, the existing bulb-type marker lamp 11a is sequentially replaced with the LED-type marker lamp 11b. Therefore, the bulb-type marker lamp 11a and the LED-type marker lamp 11b coexist on the same runway 15 until all the replacements are completed.

  As shown in FIG. 1, the constant current control device 12 switches the output current according to the luminous intensity ratio, thereby adjusting the luminous intensity of the bulb-type marker lamp 11a and the LED-type marker lamp 11b to the luminous intensity according to the current value.

  At this time, the light intensity ratio that is frequently used in the airport runway 15 is a light intensity ratio of 5%, which is an intermediate value of the light intensity ratio range, but the LED type indicator lamp 11b has a light intensity ratio of 5%. Since the color tone of the light radiated to the outside with the luminous intensity is set so as to be closest to the color tone of the light emitted to the outside with the luminous intensity ratio of the bulb-type marker lamp 11a of 5%, the luminous intensity ratio is 5%. The difference in color tone can be minimized.

  Furthermore, by adjusting the color tone at a light intensity ratio of 5%, which is an intermediate value of the light intensity ratio range, even when the light intensity ratio is adjusted to a light intensity ratio other than the light intensity ratio of 5%, the light bulb type indicator lamp 11a and the LED type indicator light Difference in color tone from 11b can be reduced.

  Thus, in order to sequentially replace the existing bulb-type marker lamp 11a on the runway 15 with the LED-type marker lamp 11b, a situation occurs in which the bulb-type marker lamp 11a and the LED-type marker lamp 11b coexist on the same runway 15. Even so, the difference in color tone between the bulb-type marker lamp 11a and the LED-type marker lamp 11b within the adjustable luminous intensity ratio range can be reduced.

  Moreover, the light intensity ratio of the LED-type indicator lamp 11b is changed to the light-bulb-type indicator lamp 11a at a brightness ratio of 5%, which is a light intensity ratio that is frequently used in the airport runway 15 and is an intermediate value of the brightness ratio range. By adjusting to the color tone, the difference in color tone can be reduced not only when the light intensity ratio is 5%, which is an intermediate value of the light intensity ratio range, but also when the light intensity ratio is adjusted to other light intensity ratios.

  Note that the LED-type marker lamp 11b can be applied not only to the center line lamp of the runway 15 but also to a ground belt lamp between the runway 15 and the side of the runway 15.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 beacon light system
11a Light bulb
11b LED beacon
12 Constant current controller
13 Isolation transformer
25 LED elements

Claims (2)

In the LED-type marker lamp used in place of the bulb-type marker lamp, the marker-lamp system for adjusting the luminous intensity of the bulb-type marker lamp to a predetermined luminous intensity ratio,
It has an LED element that emits light to be radiated to the outside, and the light bulb type marker lamp has the lightness of light that is radiated to the outside at an intermediate value in the adjustable light intensity ratio range, and the light intensity at the intermediate value in the same light intensity ratio range. An LED-type marker lamp, which is set according to the color tone of light radiated to the outside. A constant current control device that switches the output current according to the luminous intensity ratio;
The LED-type marker lamp according to claim 1 connected to the constant current control device via an insulating transformer;
A sign lamp system characterized by comprising:

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