Alps Electric Co., Ltd.

Minoru Oyama

Shiro Kondo

Yasuo Takii

Kosei Obata

Ryoji Kinugawa

Misturu Furudate

An illuminated electrical part comprises a case, an indicator panel attached to the open front end of the case, a housing attached to the case so as to define an illuminating space behind the indicator panel, and an illuminating device comprising a light source disposed behind the indicator panel and mounted on the housing, and a cover formed of a highly heat-conductive material, fixed to the housing so as to cover the light source and provided with light control slits in its top wall extending between the indicator panel and the light source and with light control apertures in its opposite side walls. The numbers, shape and arrangement of the light control sliuts and the light control apertures are determined selectively so that the entire area of the indicator panel is illuminated uniformly by light emitted by the light source, scattered by the inner surface of the housing and shed through the light control slits and the light control apertures.

Illuminated electrical part

There is disclosed a device for displaying the operation of a knob that is used for an automobile heater control unit, for example. The device has a frame in which a slider is mounted so as to be horizontally slidable. The knob is fixed to one end of the slider. A first light-conducting body that can be illuminated by a lamp to display the operation of the knob is so formed as to surround the slider and the knob. A second light-conducting body that can be illuminated by a second lamp to display the position of the knob is so mounted that the end of this body is located within the outer end surface of the knob. That is, the first light-conducting body is located around the second conducting body.

Device for displaying operation of knob

A snap-attachable holder for holding a number of display elements is adapted to engage with the edge portion of a printed circuit board so that the holder does not add substantially to the thickness of the printed circuit board. The holder is of an L-shaped cross section and has vertical protrusions and pawls for aligning with and snappingly engaging to the printed circuit board. The holder further has guide slots for guiding the terminals of each display element so that they protrude upwardly in the same direction as the pawls.

Display element attachment holder

A fixture for a push-button switch which has an operating lever protrusive from one face of a box-shaped casing thereof, characterized by comprising a mounting frame which is substantially U-shaped in section and which is provided with an opening for leading out the operating lever of the push-button switch, one mounting surface of the mounting frame being provided with a plurality of bulges for positioning the push-button switch in engagement with the casing thereof, the other mounting surface being provided with a pair of tongues protrusive in a direction orthogonal to the moving direction of the operating lever, the pair of tongues being fastened in engagement with the casing of the push-button switch.

Fixture for push-button switch

A construction for attaching a knob to a manipulation rod of a push-button type actuating mechanism. The knob has a cap-like shape with an outer wall and an inner cylinder having a bore. A snapping protrusion is formed at the lower end of the inner peripheral surface of the outer wall. The snapping protrusion has a tapered section protruding inwardly from the inner peripheral surface of the outer wall and a snapping step formed on the inner peripheral surface of the outer wall. The manipulating rod has a flange formed at its intermediate portion and resilient tongues formed on the upper end thereof. As the rod in inserted into the bore of the inner cylinder of the knob, the outer peripheral surface of the flange slides along the tapered section of the snapping protrusion spreading the outer wall outwardly and then comes into snapping engagement with the snapping step. This engagement is maintained firmly by the action of the resilient tongues which resiliently presses the rod downwardly to keep the flange in tight contact with the snapping step.

Growing community of inventors

Furukawa, Japan

Minoru Oyama