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Recommendations for JIL-approved leading and emergency lights

To ensure swift evacuation during an emergency or disaster, leading and emergency lights must be properly maintained to ensure their proper function.

In the event of an emergency, these lights are required to be illuminated for the following time periods

Leading lights:
Ordinance for Enforcement of the Fire Service Act, article 28 paragraph 3, continuously for at least 20 minutes
Emergency lights:
Ordinance for Enforcement of the Building Standards Act, article 126, paragraph 5, continuously for at least 30 minutes.

Small rechargeable batteries are being used as a power source for these devices. These small rechargeable batteries are always being charged and are kept in a fully charged state. Keeping these batteries in a fully charged state causes the battery to slowly decay. To ensure the function of this equipment, the batteries must be checked regularly and replaced in accordance with the instruction manuals of the device manufacturer.

Replace batteries only with those recommended by the device manufacturer (those with a JIL mark).

JIL Mark

For more details, see the Japan Luminaires Association website (