Disclosed herein are a surface heater, an electric range having the same, and a manufacturing method thereof. The surface heater includes a substrate including a surface formed of an electrically insulating material, heating element attached to the surface of the substrate by sintering predetermined powder including lanthanide oxide powder, and a power supply unit configured to supply electricity to the heating element. The electric range includes the surface heater. The manufacturing method of the surface heater includes baking the predetermined powder at a baking temperature of 900° C. or lower.

Disclosed herein are a surface heater, an electric range having the same, and a manufacturing method thereof. The surface heater includes a substrate including a surface formed of an electrically insulating material, heating element attached to the surface of the substrate by sintering predetermined powder including lanthanide oxide powder, and a power supply unit configured to supply electricity to the heating element. The electric range includes the surface heater. The manufacturing method of the surface heater includes baking the predetermined powder at a baking temperature of 900° C. or lower.

A cooking hob includes a cooktop defining a major surface extending between a plurality of sides and a plurality of edge surfaces extending away from the major surface at respective sides thereof and a plurality of burner units disposed at the major surface within respective sections of the major surface. The cooktop further includes a lighting assembly affixed with the cooktop opposite the major surface and extending adjacent at least two of the sections of the major surface and including a plurality of lighting elements respectively exposed at respective portions of the edge surfaces corresponding with the sections of the major surface.

The present invention relates to a ceramic heater for independently controlling a middle region, and more specifically, to a ceramic heater comprising: a center-edge heating element provided at a position corresponding to a center region and an edge region of a heating surface of the ceramic heater; and a middle heating element provided at a position corresponding to a middle region which is surrounded by the center region and the edge region of the heating surface of the ceramic heater, and thus the present invention has an effect whereby the respective temperatures of three divided regions may be

The present invention relates to a ceramic heater for independently controlling a middle region, and more specifically, to a ceramic heater comprising: a center-edge heating element provided at a position corresponding to a center region and an edge region of a heating surface of the ceramic heater; and a middle heating element provided at a position corresponding to a middle region which is surrounded by the center region and the edge region of the heating surface of the ceramic heater, and thus the present invention has an effect whereby the respective temperatures of three divided regions may be

The invention is based on a protective device for a heating unit, in particular for a cooking apparatus (10), for protecting a heating unit against a hot air flow (44). To achieve an effective cooling effect, it is proposed that the protective device for a heating unit comprises a shielding element (68), which is provided for this purpose to shield a space (46) provided for a cold cooling air flow (42) for cooling the heating unit (14) against the hot air flow (44).

The present invention relates to a ceramic heater and, more specifically, to a ceramic heater characterized in that connecting portions connecting concentric circumferences of a heating element included in the ceramic heater are formed such that the symmetrical axes of pairs of connecting portions do not pass through the center of the heating element. The present invention has the benefit of providing a ceramic heater in which the heating surface of a ceramic plate has improved temperature uniformity as a result of the reduction of a low temperature region of the heating element included in the ceramic heater. In addition, the present invention has the benefit of providing a ceramic heater in which the heating surface of a ceramic plate has improved temperature uniformity by only changing the design of the structure of the connecting portions connecting the concentric circumferences of the heating element without adding an additional device.

An electric heater includes a substrate, and a plane heating element that is located at a surface of the substrate and that includes a pattern portion having a start point and an end point that are connected to each other. The pattern portion includes a plurality of tracks that are spaced apart from one another, that have an arc shape, and that are arranged at positions from an inner side of the pattern portion to an outer side of the pattern portion, where lengths of the plurality of tracks increase from the inner side to the outer side. The plurality of tracks include at least two tracks that are arranged respectively about a first center of curvature and a second center of curvature that is different from the first center of curvature.

A board-like structure includes a base body, an internal conductor, a connection conductor, and a terminal member. The base body is an insulating member including an upper surface and a lower surface on an opposite side to the upper surface. The internal conductor runs along the upper surface and the lower surface inside the base body. The connection conductor is connected to the internal conductor inside the base body. The terminal member is connected to the connection conductor inside the base body and is exposed to an external portion of the base body at the lower surface. The connection conductor is longer in length in a vertical direction than a thickness of the internal conductor in the vertical direction. In the terminal member, at least a side surface is connected to the side surface of the connection conductor.

A heating cooker includes a top plate on which a container that accommodates an object to be heated is placed, a heater that heats the container placed on the top plate from below, and a projector that is at least partly disposed below the top plate and that projects an image diagonally upward.