JP7385901B2 - Special lighting equipment for natural environment protection and disaster prevention - Google Patents

Description

The present invention relates to lighting equipment for sea turtle protection and disaster prevention.

In recent years, accidents in which sea turtles stray when they are born due to light sources such as road lights, security lights, and guide lights around the spawning grounds of sea turtles have become a major problem.

On the other hand, in areas around the coasts such as the Nankai Trough, lighting equipment for earthquake tsunami disaster prevention is rapidly becoming popular. White LEDs, which are familiar to humans, are generally used as tsunami disaster prevention lighting equipment. Currently, the disaster prevention side does not even consider the protection of sea turtles.

In order to promote the sale of lighting equipment installed at sea turtle nesting grounds, we were researching sea turtle nesting grounds and discovered that sea turtle nesting grounds and troughs where earthquakes are predicted to occur are Nankai, Tonankai, and Tokai. I found that they match. Lighting equipment used in such places must have two functions: tsunami disaster prevention lighting equipment and sea turtle protection. Currently, white LEDs are used in tsunami disaster prevention equipment, but although they are effective as disaster prevention measures, they do not fulfill the function of protecting sea turtles.

On coastlines along troughs such as the Nankai, Tonankai, and Tokai regions, amber-colored LEDs are installed at sea turtle nesting sites, particularly in areas where the peak wavelength of light is longer than 560 nm (more preferably, in areas longer than 580 nm); Special lighting equipment such as road lights, security lights, guide lights, etc. that uses LEDs with a dominant wavelength in the range of 590 nm to 620 nm as a light source and has poles of 2 m or more in length will be installed as security lighting equipment that also serves as a countermeasure against sea turtles. . In particular, light sources such as road lights, security lights, and guide lights are always in a region where the peak wavelength of the amber LED or the above-mentioned light is longer than 560 nm (more preferably, a region longer than 580 nm), and the dominant wavelength is lights up an LED in the range of 590nm to 620nm, and when receiving a signal such as an emergency warning signal or J-alert in an emergency such as a tsunami or large wave, the above LED and another color, for example, a red LED (light The configuration is such that an LED with a dominant wavelength of 620 nm to 710 nm), a blue LED (with a dominant wavelength of light of 435 nm to 480 nm), and an LED of another color are turned on.

Currently, tsunami disaster prevention lighting equipment uses white LEDs, which have good lighting efficiency and are familiar to the human eye. Compared to white LEDs, amber LEDs are about 20% less efficient and have poorer color rendering properties, but their light transparency is better than white LEDs. As tsunami disaster prevention lighting equipment for coastlines, the efficiency and color rendering properties of white LEDs are insignificant, since the use of amber LEDs can contribute to the protection of sea turtles.

It has been reported that sea turtles cannot recognize light wavelengths of 560 nm or more, so according to the special lighting device of the present invention, the light source has a peak wavelength of light longer than 560 nm (more preferably, a region longer than 580 nm). ) and whose dominant wavelength is in the range of 590nm to 620nm, it is possible to greatly contribute to the protection of sea turtles, be kind to people, and be useful for crime prevention and disasters without damaging the landscape. . In addition, when a disaster occurs, the LEDs of other colors in the lamp light up, so it is possible to visually notify that a disaster has occurred, and it is also possible to notify people with hearing impairments of the occurrence of a disaster.

Figure 5 is a superimposition of the sea turtle spawning areas in Figure 3 and the trough distribution map in Figure 4. As can be seen from Figure 5, the sea turtle spawning areas and the troughs coincide. It is appropriate to use the amber LED of the present invention as tsunami disaster prevention lighting equipment for coastlines.

As a result, there is no need to produce two types of equipment: tsunami disaster prevention lighting equipment and sea turtle protection lighting equipment, resulting in significant cost rationalization.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of the present invention, which is an amber-colored LED road light special lighting device for natural environment protection and disaster prevention, which incorporates a red LED that turns on in an emergency.

In FIG. 1, 1 is a road light, 11 is a light source surface, and an amber LED group 13 is used, and a part is a red LED group 14.
FIG. 6 is a functional block diagram of the road light 1. The road light 1 includes an amber LED group 13, a different color LED group 14, a control unit 30, an illuminance sensor 40, an emergency warning signal receiving interface 50, an emergency warning signal detection unit 60, an internal power source 70, and an external power connector 150. are doing. The road light 1 has a circuit in which when the brightness becomes darker than a predetermined brightness, the illuminance sensor 40 turns off, a relay (not shown) operates, and the amber LED group 13 lights up. Further, the control unit 30 is configured to turn on the red LED group 14 based on information from the emergency warning signal detection unit 60. Note that the control unit 30 may be configured to turn on the amber LED group 13 and the red LED group 14 based on the output value of the illuminance sensor 40.

FIG. 7 is a flowchart showing a process of the control unit 30 that causes the road light 1 of FIG. 1 to turn on the red LED group 14 in response to the emergency warning signal. The control unit 30 receives data from the emergency warning signal detection unit 60 (S101). Next, the control unit 30 turns on the red LED group 14 if the data is an emergency warning signal, and ends the process if the data is not an emergency warning signal. (S103, 105). When it gets dark and the illuminance sensor 12 operates, the amber LED group 13 lights up. When an earthquake occurs and there is concern about a tsunami, an emergency warning signal is transmitted, and the emergency warning signal detection section 60 receives the signal, and the red LED group 14 is turned on by the control section 30. The lighting of the red LED group 14 is the most suitable color for disaster prevention lighting to indicate the possibility of a disaster occurring. Naturally, when the red LED group 14 is lit, the amber LED group 13 is also lit, and also serves as a guide light.

FIG. 2 shows another embodiment of the present invention, which is a security light or a guide light. Security lights, guide lights 2, the light source is an amber LED 21, there are various methods to use the illuminance sensor 12 for lighting, to always charge the battery with the charger 22, and to turn on the emergency light with batteries in the event of a power outage. be. Naturally, some of the LEDs in the security lights and guide lights 2 are of other colors such as red.

Road light special lighting equipment for natural environment protection and disaster prevention showing one embodiment of the present invention Security lights and guide lights showing other embodiments of the present invention Map showing sea turtle nesting areas Distribution map showing the location of troughs A map that combines Figures 3 and 4 Functional block diagram of road light 1 Flowchart diagram showing processing of the control unit 30

1... Amber color LED road light 11... Light source surface of amber color LED road light 12... Illuminance sensor 13... Amber color LED group 14... Red LED group 2... Security light, guidance Light 21...Amber LED
22... Charger 30... Control unit 40... Illuminance sensor in the functional block diagram 50... Emergency alert signal reception interface 60... Emergency alert signal detection unit 70... Internal power supply 150... external power connector

Claims (1)

A light emitting diode whose peak wavelength of light is longer than 560 nm and whose dominant wavelength is in the range of 590 nm to 620 nm;
a different color light emitting diode that emits a different color from the light emitting diode;
an emergency warning signal detection unit that detects emergency warning signals such as tsunami and heavy rain information;
comprising a control unit;
The control unit lights up the other color light emitting diodes when detecting the emergency warning signal;
The light emitting diode is a special lighting device that is not controlled by the control unit and is equipped with a support that is installed on the coastline for both natural environment protection and disaster prevention.