There shall be sufficient natural and artificial lighting in all approved child care areas of the home to allow children to engage in activities safely, allow proper child supervision, and help ensure the safety of each child, employee, and visitor to the home. A provider shall use light fixtures with bulbs, lamps, and tubes that are shatter-proof or protected by shields to prevent shattering. In a room approved for child care that does not have windows, a provider shall provide an approved source of lighting that will operate in case of a power failure. A provider shall provide adequate outdoor lighting to ensure the safety of persons entering and leaving the child care home when it is dark outside.