Abstract: A base and a module for node modules are disclosed. The base includes a first container, a second container, and a rotation portion connected with the first container and the second container respectively, wherein the first container and the second container are substantially the same and adjacent to each other. When the first container is rotated forward to the second container, the first container is stacked on the second container, and the total height of the first container and the second container is 2U.

Abstract: A light emitting diode (LED) module includes a driving circuit board, at least one LED, a thermal dispersing sheet and a heat sink. The driving circuit board includes a front surface and an opposite back surface. The at least one LED is mounted on the front surface of the driving circuit board and electrically connected to it. The thermal dispersing sheet is attached on the back surface. The heat sink is mounted on the driving circuit board in contacting the thermal dispersing sheet.

Abstract: A projector includes a lamp, a fan for dissipating heat generated by the lamp, a housing, a number of blades received in the housing, and a elongated-slider. The housing receives the lamp and the fan, and includes a top cover, a sidewall connected to the top cover, and a bottom cover connected to the sidewall. The top cover defines an through opening therein. The blades can be rotated in cooperation with the slide of the elongated-slider in the through opening. As described above, the projector can exhaust thermal formed by the lamp or electronic elements from the air outlet. At the same time, the flow direction of the air from the air outlet can be changed in cooperation with the slider. Therefore, when a user sits by the air outlet, the user can adjust the flow direction of the air from the air outlet at any time.

Abstract: A handheld projector includes a housing, a projection lens module defining an optical axis, and an adjusting member movably mounted inside the housing. The projection lens module includes a sleeve, an outer barrel fixing the sleeve therein, an inner barrel received in the outer barrel, and a projection lens received in the inner barrel. The sleeve includes a first sidewall defining a guide groove angled relative to the optical axis. The outer barrel includes a second sidewall defining at least one cam groove angled relative to the optical axis. The projection lens includes at least one cam follower corresponding to the cam groove. The adjusting member includes a first surface facing the projection lens module. A guide post extends from the first surface corresponding to the guide groove. Each cam follower is plugged into the corresponding cam groove. The guide post is plugged into the guide groove.

Abstract: A handheld projector includes a housing, a projection lens module having an optical axis and a focusing member fixed inside the housing. The projection lens module includes an inner barrel fixed inside the housing, an outer barrel sleeving the inner barrel, and a projection lens received in the inner barrel. The outer barrel includes a first sidewall. At least one cam groove is defined in the first sidewall. A guide bar extends from the first sidewall. The projection lens includes cam follower corresponding to the cam groove. The focusing member includes a body portion with a first surface facing the projection lens module. A guide groove is defined on the first surface corresponding to the guide bar. The guide groove is tilted relative to the optical axis. Each cam follower is plugged into the corresponding cam groove. The guide bar is plugged into the guide groove.

Abstract: A light emitting diode (LED) module includes a driving circuit board, at least one LED, a thermal dispersing sheet and a heat sink. The driving circuit board includes a front surface and an opposite back surface. The at least one LED is mounted on the front surface of the driving circuit board and electrically connected to it. The thermal dispersing sheet is attached on the back surface. The heat sink is mounted on the driving circuit board in contacting the thermal dispersing sheet.

Abstract: An exemplary locking structure for a portable electronic device includes an engagement portion and a fastener. The engagement portion includes an upper plate and a lateral plate perpendicular to the upper plate. Two protrusions are fixed on a fringe of the upper plate and lateral plate. The lateral plate defines a through hole. The fastener includes a main body, a first holding sheet, two second holding sheets, and a third holding sheet. The main body abuts the lateral plate. The first and second holding sheets extend from the upper plate in a first direction and the second holding sheets are engaged with the protrusions. The third holding sheet extends from a bottom end of the main body and passes through the through hole so that a locking hole of the third holding sheet is exposed outside of the housing.

Abstract: A projector includes a lamp, a fan for dissipating heat generated by the lamp, a housing, a number of blades received in the housing, and a elongated-slider. The housing receives the lamp and the fan, and includes a top cover, a sidewall connected to the top cover, and a bottom cover connected to the sidewall. The top cover defines an through opening therein. The blades can be rotated in cooperation with the slide of the elongated-slider in the through opening. As described above, the projector can exhaust thermal formed by the lamp or electronic elements from the air outlet. At the same time, the flow direction of the air from the air outlet can be changed in cooperation with the slider. Therefore, when a user sits by the air outlet, the user can adjust the flow direction of the air from the air outlet at any time.

Abstract: A projector equipped with an illuminated logo region includes a light source including a reflector defining an opening and a light-emitting portion contained by the reflector, a light-modulating device, a lens, a housing, and a logo region. The light-emitting portion emits light radially. Part of the light is emitted directly through the opening of the reflector and/or is reflected by the reflector through the opening to be received by the light-modulating device to be modulated to produce a projecting light before being received by the lens and then projected to form an image on a surface. Another part of the light is transmitted through the reflector to illuminate the logo region. The housing is configured for housing the light source, the light-modulating device, and the lens. The logo region is inlaid in a portion of the housing corresponding to the reflector, to be illuminated by the another part of light.

Abstract: A speaker holder includes a base with a blocking portion, a restraining plate, and two flanges extending form a same side of the base. The restraining plate is separated from the blocking portion. The restraining plate has an inward restraining tab at an end of the restraining plate remote from the base. The blocking portion, the restraining plate, and the two flanges cooperatively form a receiving space for receiving and restraining the speaker on the base. The speaker can be directly inserted into the receiving space and more easily and firmly fixed therein utilizing the restraining tap of the restraining plate. Therefore, time spent to assemble the speaker is less than the conventional method.