Patented Technology Transforms Scorching Work Sites: "Breeze Duct A (Advance)" Launched, Achieving -6°C Helmet Internal Temperature

Jutoku Co., Ltd. (Toyohashi City, Aichi Prefecture, hereinafter "the Company"), which supports the comfort of work sites through manufacturing, began selling "Breeze Duct A (Advance)," a new model of helmet-mounted heatstroke prevention product equipped with patented technology, in April 2026.

This product guides air from air-conditioned wear into the helmet via a dedicated duct, and its effect of reducing the helmet's internal temperature by approximately -6°C (*1) compared to when not worn has been confirmed. This new model incorporates improvements based on feedback from users of the previous model, and its use is expected in all workplaces where helmet wearing is mandatory in scorching environments, such as security, construction, logistics, manufacturing, and power/telecom infrastructure.

See Details

Background - Head heatstroke measures are lagging

In recent years, with an increase in emergency transports due to heatstroke, the number of transported individuals nationwide reached 97,578 in 2024, of which approximately 10%, or 9,870 people, were transported from workplaces (*2). In industries such as construction, security, and manufacturing, where helmet wearing is mandatory, heat and humidity accumulate inside the head, posing a serious life-threatening risk. Particularly in the construction industry, where 36.7% of on-site workers are aged 55 or older (*3), the aging of the workforce is rapidly progressing, making heatstroke risk management an urgent issue for the entire industry.

Under these circumstances, the revised Industrial Safety and Health Regulations, which came into effect on June 1, Reiwa 7 (2025), made measures to prevent severe heatstroke mandatory with penalties (*4).

While the use of air-conditioned wear (work clothes with fans) is becoming widespread at work sites, many voices indicate that "stuffiness inside helmets cannot be resolved," and head heatstroke measures are still lagging. Breeze Duct A was developed based on the unique idea of "delivering air from air-conditioned wear into the helmet" to improve these social issues.

Breeze Duct A Features - Four Evolutions Reflecting Customer Feedback

"Breeze Duct" is a product that, when attached to an existing helmet, sends air from air-conditioned wear into the helmet, enabling head cooling and resolution of stuffiness.

Reduces helmet internal temperature by approximately -6°C

It guides air from air-conditioned wear into the helmet via a dedicated duct, preventing stuffiness with constant ventilation. The neck cover structure suppresses air from escaping before reaching the head.

Sunlight blocking by heat-shielding fabric (titanium coating)

Highly heat-shielding fabric (titanium coating) blocks direct sunlight. The synergistic effect with ventilation by airflow reduces the burden of heat around the neck and back of the head.

No additional power required. Reduced on-site introduction cost with easy attachment to existing equipment

It can be easily worn by simply using existing air-conditioned wear and attaching it to a helmet. It also saves introduction costs, has a low risk of failure because it does not have electrical mechanical parts, and is economical for repeated use.

Safe design allowing clear hearing of ambient sounds and on-site instructions

Unique design that does not cover the ears. Also, unlike fan-equipped "flaps" that generate fan noise near the ears, it is designed not to obstruct on-site instructions or sounds.

Temperature change demonstration experiment results (Company research)

Furthermore, based on feedback from users of the old model, the following four points have been improved:

① Removed/changed black parts that attract bees to reduce the risk of bee stings.

② Changed the shape of the "flap" so that it does not cover the ears, preventing obstruction of on-site instructions or sounds.

③ Revised the duct structure to reduce stress on neck movement, expanding the range of motion of the neck.

④ Enlarged the duct opening to increase airflow for a better cooling sensation from the airflow.

Bee countermeasures (removed black parts) Does not obstruct on-site instructions or sounds (shape improvement) Easy to move the neck (duct structure improvement)

About Patented Technology

The "Breeze Duct" series has obtained a patent (Patent acquired: May 2025) for its structure that guides air from air-conditioned wear into the helmet via a ventilation path (tubular) along the wearer's neck.

Unique structure that achieves airflow to the head without using additional power (fan, motor, etc.)

Tubular ventilation path design ensures "the airflow path is not crushed," securing stable ventilation.

The design positions one end of the ventilation path inside the clothing and the other end towards the head, and by having different curvatures at each end, it reduces discomfort and displacement during wearing.

Breeze Duct A Use Cases

Security industry (traffic security, construction site security, etc.)

Construction industry (work at height, scaffolding assembly/disassembly, excavation work, bridge construction, etc.)

Logistics industry (outdoor cargo handling, truck loading/unloading, cargo handling at ports/wharves, forklift operations at warehouses/distribution centers, etc.)

Manufacturing industry (smelting furnace work in heavy industry, steel, chemical plants, plant inspection, etc.)

Power/telecom infrastructure industry (steel tower inspection/repair, utility pole climbing work, power line construction, etc.)

Our Outlook

The Company will continue to develop products for work sites, including "Breeze Duct A."