Abstract: An electrical device is provided in this invention, includes a main part having a pivot-receiving opening, an operation part having a pivot engaged pivotally to the pivot-receiving opening, and a flexible circular ring encircling the pivot, and being disposed and pressed between the pivot and the pivot-receiving opening.

Abstract: A new light emitting device is disclosed. The device includes a reflector, a surface layer, and a light emitting layer located there-between. The light emitting layer emits light at a wavelength ?. An optical thickness from the light emitting layer to the reflector is approximately m*?/4, where m is a positive integer. Furthermore, the said device may, in addition, include an optical transform layer adjoining to the light emitting layer. Thus, the light emitted by the device can be not only collimated but also polarized.

Abstract: A heat dissipation apparatus used in a computer comprises a heat sink and a star-shaped spring with multiple directional arms, wherein each directional arm extends in a corresponding direction, and the tangent direction of the corresponding contact boundary formed by securing the direction arm to the heat sink is perpendicular to the corresponding direction. The force imposed from the spring on the heat sink is uniform as a result of the perpendicular mechanism.

Abstract: The invention provides a rotary joint device and a support frame and a camera apparatus therewith. The rotary joint device includes a first rotary member, a second rotary member, and a positioning device. The first rotary member includes a first positioning recess space and a second positioning recess space. The second rotary member is pivotally engaged to the first rotary member and includes a hole. The positioning device includes a body, a resilient, and a positioning part. The body includes an accommodating space. The resilient is accommodated in the accommodating space and is connected to the body and the positioning part respectively. The body is disposed in the hole and is connected to the second rotary member. The positioning part is urged against the first rotary member and is accommodated in the first positioning recess space or the second positioning recess space.

Abstract: A hinge unit applicable on a computer device provides an auto-lock and double-side rotation function comprising a brace, a first pivoting member, a second pivoting member, a post and a connecting sheet. The hinge unit further comprises a positioning member and an angle limiter for providing the functions of positioning and fit-in feeling.

Abstract: A light-emitting device comprises a substrate, at least one light-emitting structure configured to emit light beams and positioned on the substrate, and a ring-shaped photonic crystal structure positioned in the light-emitting structure. The ring-shaped photonic crystal structure includes a plurality of pillars positioned in the light-emitting structure and a plurality of ring-shaped openings surrounding the pillars. The distance between the ring-shaped openings is preferably between 0.2? and 10?, and ? represents the wavelength of the light beam.

Abstract: A hinge unit with double-side rotation function applicable on a computer device comprises a first support, a second support and a spindle wherein both of the supports has connecting portions at both ends to connect with the display unit and the base of the computer device. The hinge unit further comprises an angle limiter to limit the rotation angle.

Abstract: A hinge unit applicable on a computer device provides an auto-lock and double-side rotation function comprising a brace, a first pivoting member, a second pivoting member, a post and a connecting sheet. The hinge unit further comprises a positioning member and an angle limiter for providing the functions of positioning and fit-in feeling.

Abstract: A keyboard device applicable on a computer device and includes a first side with a first pivoting unit and a second side with a second pivoting unit. The position of the first side is opposite to that of the second side. Both of the first side and the second side are connected with the base of the computer device via their respective pivoting unit. Therefore, the keyboard can be rotated relative to the base via the first pivoting unit and the second pivoting unit making the conversion steps from normal notebook operation status to tablet PC operation status easier and vice versa.

Abstract: A heat dissipation apparatus used in a computer comprises a heat sink and an angularly shaped spring with multiple directional arms, wherein each of the directional arms extends in a corresponding direction and the tangent directions of the contact boundary between the heat sink and the multi directional arms on the spring are perpendicular to the corresponding directions. The force imposed from the spring on the heat sink is uniform as a result of the perpendicular mechanism, and therefore the heat dissipation efficiency is enhanced.

Abstract: A support apparatus includes a base portion, a rotation shaft and a bracket portion. The base portion is attached to a device. The bracket portion is coupled to the base portion by inserting the rotation shaft through the bracket portion and the base portion, and the rotation shaft is perpendicular to the base portion. The bracket portion is rotatable using the rotation shaft as a pivot. The bracket portion includes a hinge, a rotation shaft and a stand. The hinge is secured to the base portion by the rotation shaft. The rotation shaft is inserted into the hinge and the rotation shaft is perpendicular to the rotation shaft. The stand is coupled with the two ends of the rotation shaft. The stand supports the device with a predetermined angle between them. The stand can be rotatable so that the device stands relying upon either one of the four sides and the stand.