Human Centric Lighting/5. HCL in healthcare facilities

Human Centric Lighting/5. HCL in healthcare facilities

1. Why is Human Centric Lighting (HCL) so important in healthcare facilities?

Light designed for people (Human Centric Lighting) is now possible thanks to the progress made in the LED technology and to the scientific research that have shown the multiple effects of light not only on the health of our eyes, but also for our biological rhythm and physiological wellbeing.

These factors are particularly important for healthcare facilities that accommodate patients with health problems and workers employed to provide 24-hour medical assistance.
Let’s now take a look at the advantages of having a LED lighting system designed according to Human Centric Lighting principles in hospitals.

Energy savings. In developed countries, where population is aging and life expectancy is increasing, health is one of the most important items in a country’s public expenditure and it is expected to increase further in the future. Therefore, energy savings are crucial for hospitals and private and public healthcare structures. In buildings where lights stay always on, LED sources and light dimmers make the lighting system more efficient and sustainable.

Health and new technology. Modern hospitals are healthcare centres with highly specialised machinery, and homes for the elderly are places designed to ensure the wellbeing of their guests. In these places, lighting must help create functional, cosy and comfortable environments. To achieve this result, it is possible to use light sources with a high colour rendering, dynamic lighting and dimmers, while balancing the right amount of daylight and using appropriate decorating elements.

A support for patients and medical staff. Extensive research has demonstrated that good lighting can favour the psycho-physical wellbeing of people and therefore speed up the patients’ healing and their recovery from a surgical intervention. Good lighting is equally important for doctors and nurses, who often work for very long shifts, so having a functional lighting system helps them feel less tired at the end of their workday.

Pleasant environments for elderly and sick patients. The healthcare sector also includes facilities for the elderly or people with chronic diseases, who are more prone to depression or sadness. A lighting system based on the principles of Human Centric Lighting can be very helpful to improve their mood and allow staff and patients to face the day more pleasantly.

ospedale luci

 

2. How to exploit the advantages of HCL in healthcare facilities?

The need for protected and well-ventilated environments and the presence of delicate equipment in patient rooms and in operating theatres often prevent a good balance with natural light.

This may have a negative impact on the biological and psychological wellbeing of both patients and medical staff who are forced to spend many hours under artificial lighting.

With the right fixtures and the correct Human Centric Lighting approach it is possible to choose different colour temperatures and light levels for different rooms based on the amount of daylight entering the room at specific hours of the day, with pleasant and soothing results.

Below are some of the advantages of a Human Centric Lighting in healthcare structures verified on field studies.

fig1en

The advantages of dynamic lighting

In residential healthcare facilities, which host mostly elderly people, many of whom suffering from neurodegenerative diseases (dementia, Alzheimer’s Disease), it is very important for guests to enjoy a stable mood.

The possibility of using light sources with different colour temperatures and dynamic dimmers, allows mimicking the trend of natural light with positive effects on mood and life quality.

Human Centric Lighting can play an important role especially in winter when the exposure to natural light is limited. Even in this case, special studies demonstrated that artificial light improves the quality of rest and reduces the use of anti-depressants.

The table below shows a very simple example of dynamic light setting in a healthcare facility.

fig2enanziano2

3. How does it comply with lighting regulations?

The lighting in healthcare structures is governed by the standard regarding the lighting of indoor workplaces (UNI EN 12464-1) (also read HCL in the workplace) as well as specific standards, such as CEI 64-8/7-710 Section 710 “Medical locations” and CEI EN 60598-2-25, in the part dedicated to “Lighting fixtures for clinical environments of hospitals and healthcare units”.

In patient rooms and corridors, lighting must meet the needs of patients and medical staff, both night and day. The staff’s visual task includes the observation of the patient’s condition, the reading of their blood pressure and of their temperature, the filling of forms and charts, as medical equipment is placed in order to minimize disturbance to neighbouring patients.

fig2en

When normal lights are off, surveillance lights (and/or night lighting) must supply an adequate level of lighting to assist patients, while minimising disturbance to the people in the room. In rooms and corridors this can be achieved with lamps incorporated into general lighting systems emitting a minimum amount of power or with dimmable fixtures. For corridors and transit zones, it can be achieved with the reduction or dimming of lights (Source: ANIE, 2016).

4. Which lighting fixtures can be used to apply HCL in healthcare facilities?

For a lighting system installed in hospital facilities to comply with Human centric Lighting principles, several types of fixtures can be used:

  • Ceiling/recessed lamps for the general lighting of rooms with wide light distribution or for special lighting in operating theatres
  • Suspension lamps for direct/indirect light
  • Direct/indirect lamps for wall washing or indirect lighting (including bed head lights)
  • Dimmers, colour changes, light scenes controllers

5. Disano’s fixtures designed for HCL in healthcare facilities

comfort panel hcl

Comfort Panel HCL – WIRELESS

  • Colour temperature adjustment range from 2700K to 6500K on a linear scale
  • CRI 90 MacAdams 3
  • Full 3% to 100% dimming range
  • Switch-off fading
  • <4% flicker
  • Constant colour temperature over the entire dimming range • LED driver that automatically adjusts lights to the desired colour temperature and the required luminous flux

See product fact sheet

 Ccomfortsquare hcl

Comfortsquare HCL – WIRELESS – presence and light sensor

  • Colour temperature adjustment range from 2700K to 6500K on a linear scale
  • CRI 90 MacAdams 3
  • Full 3% to 100% dimming range
  • Switch-off fading
  • <4% flicker
  • Constant colour temperature over the entire dimming range
  • LED driver that automatically adjusts lights to the desired colour temperature and the required luminous flux

See product fact sheet

ermetica

Ermetica LED

  • Available in the version for aseptic rooms
  • Diffuser with 4-mm thick tempered protection glass
  • Dark light optics: with double parabolic louvers, longitudinal and transversal, in anodized matt aluminium with 2µ thickness and low luminance
  • LED power factor: ≥0.9
  • 80% lumen maintenance after 50,000 h (L80B20)
  • Photobiological exempt group

See product fact sheet

 

glossy

Professional Glossy Tunable White

  • Optics in aluminium to optimise light efficiency.
  • Lens: in PMMA with high efficiency output and very low glare rate
  • Photobiological safety class: Exempt group
  • Tunable White system for Downlights with adjustable colour temperature from 2,700 to 6,500 K at constant luminous flux.
  • Functions:
    • Constant light output function (CLO)
    • SwitchDIM and colourSWITCH with memory function;
    • ColourSWITCH with 9 predefined colours;
    • Configurable via DALI.

See product fact sheet

health

Health

  • Screen: in anti-glare matt plastic material.
  • Coating: epoxy polyester powder coating resistant to UV rays.
  • CRI 90
  • Low Flicker
  • LED: Power factor ≥0.9.
  • Luminous flux maintenance 80%: 50.000h (L80B20).

See product fact sheet

 

 

 

  • Posted by Redazione
  • On July 30, 2019
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Tags: Healthcare lighting, natural light, news, psychological wellbeing

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