A winding mechanism includes a housing, an inner cylinder and a wire. The housing is formed with an accommodating space therein. An inner surface of the housing is formed with an internal thread structure. The inner cylinder is disposed in the accommodating space and defines a central axis. An outer surface of the inner cylinder is formed with an external thread structure. The external thread structure is cooperated with the internal thread structure. The inner cylinder is capable of displacing along the central axis by rotating relative to the housing. The external thread structure includes at least two contact portions and at least two non-contact portions, and gaps are formed between the non-contact portions of the external thread structure and the internal thread structure. An end of the wire is connected to the inner cylinder and is wound along the external thread structure of the inner cylinder.

Disclosed herein is a luminaire apparatus having an air cleaner attached thereto, which is connected by wires and cables so as to be vertically movable. More particularly, the luminaire apparatus enables a luminaire and air cleaner, which are considerably heavy, installed on a ceiling to be safely moved vertically using wires in order to perform replacement of light bulbs, replacement of air cleaner filters, troubleshooting, or maintenance, and is usable through supply of power to the luminaire and the air cleaner at a desired height by installing the air cleaner capable of vertically moving together with the luminaire and by installing power cables capable of supplying power even when the luminaire and the air cleaner are moved up and down.

A lighting system, such as for an indoor growing facility, comprises a plurality of lighting units, each lighting unit comprising at least one LED, wherein each lighting unit is powered by a power supply and wherein the plurality of lighting units are arrayed linearly.

A vehicle includes at least one hose extending from the vehicle and configured to extend below ground through a manhole, and a light system. The light system includes a storage member, such as a retractable reel, coupled to the vehicle, a flexible line wrapped at least partially around the storage member, and a light source coupled to the flexible line. The storage member is adapted to selectively extend and retract the light source together with the hose below ground, and the light source is storable on the vehicle adjacent the storage member. The light source has a self-contained power source. In some systems, the flexible line and/or the light source are removable from the vehicle so they can be moved to a remote location from the vehicle.

A vehicle includes at least one hose extending from the vehicle and configured to extend below ground through a manhole, and a light system. The light system includes a storage member, such as a retractable reel, coupled to the vehicle, a flexible line wrapped at least partially around the storage member, and a light source coupled to the flexible line. The storage member is adapted to selectively extend and retract the light source together with the hose below ground, and the light source is storable on the vehicle adjacent the storage member. The light source has a self-contained power source. In some systems, the flexible line and/or the light source are removable from the vehicle so they can be moved to a remote location from the vehicle.

Disclosed is a smart solar power generation system comprising: a pole fixed to stand on the ground; a solar panel disposed obliquely on the top of the pole and generating solar electricity: a rotation device installed under the solar panel and providing rotational force to the solar panel; and a microcomputer which drives and controls the rotation device, and executes a first rotation mode for producing solar electricity while rotating the solar panel at a predetermined speed after sunrise, and a second rotation mode for moving the solar panel to the start position by rotating the solar panel such that the top surface of the solar panel faces east using residual electricity outputted from the solar panel at sunset or sunrise.

Disclosed is a smart solar power generation system comprising: a pole fixed to stand on the ground; a solar panel disposed obliquely on the top of the pole and generating solar electricity: a rotation device installed under the solar panel and providing rotational force to the solar panel; and a microcomputer which drives and controls the rotation device, and executes a first rotation mode for producing solar electricity while rotating the solar panel at a predetermined speed after sunrise, and a second rotation mode for moving the solar panel to the start position by rotating the solar panel such that the top surface of the solar panel faces east using residual electricity outputted from the solar panel at sunset or sunrise.

A downlight apparatus includes a downlight housing, a drawstring module and a light module. The downlight housing has a surface rim and a downlight holder. The surface rim defines a rim opening. The surface rim conceals an installation cavity. The holder defines a holder space connected to the rim opening. The downlight housing is attached in the installation cavity with a fixing unit. The drawstring module is used for collecting a pullable wire. The pullable wire is electrically connected to a power source. The light module has a light source and a light housing. The light housing is connected to a bottom end of the pullable wire for electrically connecting the power source to the light source. The light module is pulled out from the holder space to an adjustable distance from the rim opening with the pullable wire connecting the light module to the downlight housing.

A lighting system includes a light source, a light redirection element, and a movement mechanism coupled to the light source and the light redirection element. The movement mechanism is configured to simultaneously or stepwise move the light source and the light redirection element between a top lighting position and an interlighting position.

A lighting system includes a light source, a light redirection element, and a movement mechanism coupled to the light source and the light redirection element. The movement mechanism is configured to simultaneously or stepwise move the light source and the light redirection element between a top lighting position and an interlighting position.