In some embodiments, a lighting assembly including at least one light-emitting device positioned within a housing is disclosed, wherein the housing is designed to allow an ambient environment to pass into the housing and transfer heat from the at least one light-emitting device. The light-emitting area of the light-emitting device may be sealed from the ambient environment. In some embodiments, the housing may include at least one recess, port, or other opening configured to allow a liquid or gas to promote heat transfer from the light-emitting device. In some embodiments, a vehicle, a marine system, or other systems may include at least one lighting assembly as contemplated herein.

In some embodiments, a lighting assembly including at least one light-emitting device positioned within a housing is disclosed, wherein the housing is designed to allow an ambient environment to pass into the housing and transfer heat from the at least one light-emitting device. The light-emitting area of the light-emitting device may be sealed from the ambient environment. In some embodiments, the housing may include at least one recess, port, or other opening configured to allow a liquid or gas to promote heat transfer from the light-emitting device. In some embodiments, a vehicle, a marine system, or other systems may include at least one lighting assembly as contemplated herein.

An underwater lighting apparatus includes a cofferdam having a cofferdam electrical connector rigidly mounted within the cofferdam at an inner end; a lighting unit sized and shaped to be mounted within the cofferdam and having a lighting unit electrical connector rigidly mounted at an inner end; wherein the lighting unit electrical connector is sized and shaped to directly connect with the cofferdam electrical connector to form a rigid connection between the cofferdam and the lighting unit. The lighting apparatus is beneficial in that both the cofferdam electrical connector and the lighting unit electrical connector are rigidly mounted.

A personal watercraft (PWC) is provided. The PWC includes a body having a bottom portion, a top portion covering the bottom portion, and a storage space disposed between the top and bottom portions; and a power train disposed on or in the body. The power train includes a motor, a battery, a controller, an impeller, and an impeller water pump, and is configured for moving the body through water. Further, the body and the power train collectively weigh about 150 pounds or less.

A personal watercraft (PWC) is provided. The PWC includes a body having a bottom portion, a top portion covering the bottom portion, and a storage space disposed between the top and bottom portions; and a power train disposed on or in the body. The power train includes a motor, a battery, a controller, an impeller, and an impeller water pump, and is configured for moving the body through water. Further, the body and the power train collectively weigh about 150 pounds or less.

A pole light and base system that includes a pole light base configured to be secured to a gunwale of a watercraft. In practice, the pole light base might include a pole light tube and a female Universal Serial Bus connector. The pole light tube may have electrical contacts configured to engage respective electrical contacting portions of an all around light pole if an all around light pole is inserted into the pole light tube. In some cases, the system might include the all around light pole and light. The electrical contacts of the tube might include a positive contact electrically coupled to a first wire and a negative contact electrically coupled to a second wire. The first and second wire may be designed to connect directly to a 12 Volt watercraft battery. They may also connect to a boat fuse box that is connected to a battery. Similarly, the female USB connector can be electrically connected to a printed circuit board that includes transforming components capable of transforming 12 Volt power from a watercraft battery into a lower voltage, such as 5 volt, that is made available via the female USB-A connector.

A pole light and base system that includes a pole light base configured to be secured to a gunwale of a watercraft. In practice, the pole light base might include a pole light tube and a female Universal Serial Bus connector. The pole light tube may have electrical contacts configured to engage respective electrical contacting portions of an all around light pole if an all around light pole is inserted into the pole light tube. In some cases, the system might include the all around light pole and light. The electrical contacts of the tube might include a positive contact electrically coupled to a first wire and a negative contact electrically coupled to a second wire. The first and second wire may be designed to connect directly to a 12 Volt watercraft battery. They may also connect to a boat fuse box that is connected to a battery. Similarly, the female USB connector can be electrically connected to a printed circuit board that includes transforming components capable of transforming 12 Volt power from a watercraft battery into a lower voltage, such as 5 volt, that is made available via the female USB-A connector.

The present disclosure provides a lampshade structure, an unmanned aerial vehicle (UAV) arm, a UAV, and a movable platform. The lampshade structure may comprise a first light-transmitting surface of a lampshade body close to a light-emitting element and a second light-transmitting surface of the lampshade body away from the light-emitting element; wherein the first light-transmitting surface may include a scattering structure to outwardly refract light emitted by the light-emitting element to expand a light-emitting angle and an irradiation direction of the light-emitting element, thereby obtaining sufficient light in a desired direction.

The present disclosure provides a lampshade structure, an unmanned aerial vehicle (UAV) arm, a UAV, and a movable platform. The lampshade structure may comprise a first light-transmitting surface of a lampshade body close to a light-emitting element and a second light-transmitting surface of the lampshade body away from the light-emitting element; wherein the first light-transmitting surface may include a scattering structure to outwardly refract light emitted by the light-emitting element to expand a light-emitting angle and an irradiation direction of the light-emitting element, thereby obtaining sufficient light in a desired direction.

A lighted inflatable apparatus including: a wall comprising a first inflatable chamber; at least one lighting element disposed within the wall, the at least one lighting element configured to emit light; and a control box connected to the at least one lighting element, the control box configured to control one or more emission states of the at least one lighting element.