Abstract

A non-grounding electric leakage prevention device is disclosed. The present non-grounding electric leakage prevention device comprises: an input terminal unit including a first input terminal and a second input terminal; an output terminal unit including a first output terminal and a second output terminal; an electromagnetic wave receiving unit, which is arranged so as to be adjacent to the input terminal unit and receives electromagnetic waves emitted from an input terminal, between the first input terminal and the second input terminal, electrically connected with a phase voltage terminal; a terminal polarity fixing unit, which is arranged between the input terminal unit and the output terminal unit, and determines a connection relation between the first input terminal and the second input terminal and between the first output terminal and the second output terminal according to a control signal received from the electromagnetic wave receiving unit, such that the first output terminal is electrically connected with a neutral terminal and the second output terminal is electrically connected with the phase voltage terminal; a connection terminal unit including a body unit made of an insulator, and a first connection terminal and a second connection terminal, which are arranged to be electrically insulated by being spaced from each other exposed to an upper surface of the body unit and allow the first output terminal and the second output terminal to be respectively and electrically connected to a load; and an electric leakage prevention conductor which is not electrically connected to the second connection terminal electrically connected with the phase voltage terminal but is electrically connected to the first connection terminal electrically connected with the neutral terminal, and which is arranged near the second connection terminal. Therefore, when an electric device is submerged, a flowing leakage current is reduced so as to prevent electrical shock and, furthermore, the generation of a leakage current between a phase voltage terminal and a ground terminal is prevented, and a phenomenon in which a circuit of the electric leakage prevention device is tripped can be prevented.

IPC Classes  ?

• H01R 13/44 - Means for preventing access to live contacts
• H01R 13/70 - Structural association with built-in electrical component with built-in switch
• H03M 5/04 - Conversion to or from representation by pulses the pulses having two levels
• H01F 7/06 - ElectromagnetsActuators including electromagnets
• H02M 3/00 - Conversion of DC power input into DC power output

Abstract

Disclosed are a tubular shielding member having an electric field-absorbing effect and an electromagnetic wave-shielding device comprising same. The tubular shielding member, which is connected to a terminal polarity fixing unit for applying either neutral point power or phase voltage power to a designated terminal and applying the other power to a remaining designated terminal, and which comprises: a first conducting wire which always receives the neutral point power that has been applied, regardless of which power from among the neutral point power and the phase power has been connected to which one of the terminals; and a second conducting wire which always receives the phase power that has been applied, regardless of which power from among the neutral point power and the phase power has been connected to which one of the terminals, wherein the first conducting wire is surrounded by the second conducting wire formed a tubualar shape. As a result, user convenience is increased by eliminating extra effort for finding the neutral point terminal, electric shock accidents involving a non-skilled person or an unaware person can be reduced by grounding through the neutral point terminal, the effect of electromagnetic waves on the human body can be minimized by reducing exposure due to phenomena such as zero potential, and the effect of reducing damage to the human body by shielding electromagnetic waves can be achieved when using together with other electric devices or electronic devices without having to replace the electric device or the electronic device.

IPC Classes  ?

• H01R 13/648 - Protective earth or shield arrangements on coupling devices
• H01R 13/6581 - Shield structure

Abstract

Disclosed are a polyhedral shielding member having an electric field-absorbing effect and an electromagnetic wave-shielding device comprising same. The polyhedral shielding member having the electromagnetic wave-absorbing effect is a shielding member, which is connected to a terminal polarity fixing unit for applying either neutral point power or phase voltage power to a designated terminal and applying the other power to a remaining designated terminal, and which comprises: a first conductor which always receives the neutral point power that has been applied, regardless of which power from among the neutral point power and the phase power has been connected to which one of the terminals; and a second conductor which always receives the phase power that has been applied, regardless of which power from among the neutral point power and the phase power has been connected to which one of the terminals, wherein the first conductor is surrounded by the second conductor formed in a polyhedral shape. As a result, user convenience is increased by eliminating extra effort for finding the neutral point terminal, electric shock accidents involving a non-skilled person or an unaware person can be reduced by grounding through the neutral point terminal, the effect of electromagnetic waves on the human body can be minimized by reducing exposure due to phenomena such as zero potential, and the effect of reducing damage to the human body by shielding electromagnetic waves can be achieved when using together with other electric devices or electronic devices without having to replace the electric device or the electronic device.

IPC Classes  ?

• H01R 13/648 - Protective earth or shield arrangements on coupling devices
• H01R 13/6581 - Shield structure

Abstract

The present invention relates to an LED lighting apparatus that has rapid heat dissipation and explosion-proof functions. A lamp body is coupled with a body cover that is configured to have reinforced glass which covers most of an entrance thereof and a body cover frame which surrounds and supports an edge thereof so that an accommodating space that is completely sealed from the outside and prevents the inflow of gas from the outside is provided. A circuit module cover is disposed so as to divide the accommodating space in two into an upper accommodating space and a lower accommodating space. A light source module assembly is accommodated in the lower accommodating space, in which a lens array plate and a heat dissipation member vertically overlap each other and are integrally bonded with each other across an LED array plate. A circuit module is accommodated in the upper accommodating space. Heat generated by the LED array plate is dissipated to an upper portion of the lower accommodating space by the heat dissipation member, and is then transmitted to the lamp body by a forced air circulation flow in order to be discharged to the outside. Heat generated by the circuit module is discharged to the outside through the lamp body that provides the upper accommodating space. A light beam that is generated by the LED array plate is refracted by the lens array plate such that a local area is irradiated in an intensive manner, and thus lighting efficiency in the local area can be maximized.

IPC Classes  ?

• F21V 25/12 - Flameproof or explosion-proof arrangements
• F21V 17/00 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages

Abstract

Disclosed is a fluorescent-type LED lamp which can be plugged into a pair of terminal sockets for direct lighting fluorescent lights and thus be driven. First and second lamp housing segments are linearly connected by means of a connecting portion. At least one LED module is seated in the housing recess of the first and second lamp housing segment such that a plurality of LEDs face a plurality of lenses. The first and second lamp housing segments each comprise: an LED module housing portion having a plurality of lenses disposed in one row on the outer surface of the floor of a long housing recess and having a housing end portion and a connecting portion on either end thereof; a cover portion covering the open top of the housing recess and coupled to both sidewalls; and a power terminal portion having a portion of a pair of electrode terminal pins which are electrically connected to an LED driving circuit, which can be inserted into a terminal socket, and which are embedded in a terminal pin cover so as to project outward, and being inserted into and coupled to the housing end portion. The LED lamp is extendable in the lengthwise direction as the structure thereof consists of segments which can be linearly connected. The LED module housing portion having built-in lenses uses a dye-mixed resin as a base material and is manufactured by injection-molding to enable the desired light color to be reproduced at a low cost.

IPC Classes  ?

• F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
• F21V 17/00 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
• F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices