太陽光と照明の科学
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Lighting for Elderly Parents' Rooms | Considering Age, Brightness, and Glare
It is said that as we age, the same room can start to feel "dark." This guide organizes how to choose lighting for elderly parents' rooms from the perspectives of brightness, co...
What to do about lighting during a power outage | Being prepared with rechargeable lights
When there's a power outage due to an earthquake or typhoon, having a light nearby brings peace of mind. We'll...
Consider the total cost over 10 years of use | How to buy lighting beyond just the initial price
The cost of lighting isn't solely determined by the initial purchase price. When considering the "total cost over 10 years,"...
Electricity Costs of LED Ceiling Lights | How Much Per Month? Estimates and Saving Tips
How much does it cost to power an LED ceiling light per month? We will explain how to estimate this...
Ceiling Light Price Ranges and Market Prices | What's the Difference Between Cheap and Expensive?
The price of ceiling lights varies widely, from a few thousand yen to tens of thousands of yen. We will...
From Fluorescent to LED Ceiling Lights | The 2027 Problem and Re-evaluating Your Choice
Under the Minamata Convention, the manufacture, import, and export of fluorescent lamps for general lighting will be abolished by 2027....
The "Darkness" of My Childhood Home I Notice When Visiting for Obon | How My Parents' Generation Sees Light and Brightness
Have you ever felt your parents' home seemed a little dim during a summer Obon visit? The amount of light...