US-12618545-B1 - Lighting device

US12618545B1US 12618545 B1US12618545 B1US 12618545B1US-12618545-B1

Abstract

A lighting device includes a housing, an elastic reflective element, a light-emitting unit, and a switching module. The elastic reflective element has a resisting surface and a reflective surface opposite to each other. The light-emitting unit is configured to provide an illumination beam to the reflective surface. The switching module is configured in the housing. When the switching module has not pressed against the resisting surface, or when the switching module has pressed against the resisting surface but has not yet transformed the shape of the reflective surface, the reflective surface assumes a first state, and the illumination beam reflected by the reflective surface has a first light pattern. When the switching module presses against the resisting surface and transforms the shape of the reflective surface, the reflective surface assumes a second state, and the illumination beam reflected by the reflective surface has a second light pattern.

Inventors

Chien-Yi Huang
Chao-Shun Wang
Ching-Chen Wei
Shih-Ting Wu

Assignees

ASUSTEK COMPUTER INC.

Dates

Publication Date: 20260505
Application Date: 20250224
Priority Date: 20250103

Claims (10)

1 . A lighting device, comprising: a housing, wherein the housing is a hollow tubular structure; an elastic reflective element, configured in the housing, wherein the elastic reflective element has a resisting surface and a reflective surface opposite to each other; a light-emitting unit, configured on the elastic reflective element to provide an illumination beam to the reflective surface; and a switching module, configured in the housing, and adapted to press against the resisting surface to transform a shape of the reflective surface; wherein when the switching module has not pressed against the resisting surface, or when the switching module has pressed against the resisting surface but has not yet transformed the shape of the reflective surface, the reflective surface assumes a first state, and the illumination beam reflected by the reflective surface has a first light pattern, and when the switching module presses against the resisting surface and transforms the shape of the reflective surface, the reflective surface assumes a second state, and the illumination beam reflected by the reflective surface has a second light pattern.
2 . The lighting device according to claim 1 , wherein the elastic reflective element comprises a fixed part and a deformation part connected to each other, the light-emitting unit is connected to the fixed part, and the switching module is configured to press against the deformation part.
3 . The lighting device according to claim 2 , wherein an angle between the fixed part and the deformation part is an acute angle.
4 . The lighting device according to claim 1 , wherein the switching module is a reciprocating motion mechanism.
5 . The lighting device according to claim 1 , wherein the switching module comprises a molded part configured to lean against the elastic reflective element, and the molded part is configured to contact the resisting surface.
6 . The lighting device according to claim 5 , wherein the molded part comprises a body and a guide rod part connected to each other, the switching module also comprises an elastic element sleeved on the guide rod part, the housing comprises a conduit structure, and the guide rod part and the elastic element are disposed within the conduit structure.
7 . The lighting device according to claim 5 , wherein the switching module also comprises a cam structure and a relay element, the relay element is fixed to the molded part, and the cam structure leans against the relay element for rotating along a rotation axis to push the relay element, when the cam structure rotates to a first position, the relay element drives the molded part so that there is a gap between the molded part and the elastic reflective element, and when the cam structure rotates to a second position, the relay element drives the molded part so that the molded part presses against the elastic reflective element.
8 . The lighting device according to claim 7 , wherein the relay element is an annular structure, the cam structure comprises a cam part and a rotating part, and the cam part leans against an inner-side surface of the relay element.
9 . The lighting device according to claim 8 , wherein an outer diameter dimension of the rotating part is the same as an outer diameter dimension of the housing.
10 . The lighting device according to claim 1 , wherein the switching module comprises at least one of a crank link mechanism, a slider crank mechanism, a cam mechanism, a screw and nut mechanism, a rack and pinion mechanism, or an eccentric mechanism.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority benefit of Taiwan application serial no. 114100204, filed on Jan. 3, 2025. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. BACKGROUND Technical Field The disclosure relates to an optical device, and particularly relates to a lighting device. Description of Related Art The screen hanging lamp is a lighting device specially designed for computer displays. It uses asymmetric light technology to evenly project light on the desktop without disturbing the screen, which may effectively reduce eye fatigue. It usually has brightness and color temperature adjustment functions to adapt to different ambient light requirements. Compared with traditional desk lamps, screen hanging lamps do not occupy desktop space and are suitable for small workspaces and long-term computer users, especially in night environments. However, the reflective lens in the current screen hanging lamp is fixed, so the distance from the irradiation surface may not be adjusted according to the user, and the focus may not be changed to adjust the irradiation energy. SUMMARY The disclosure provides a lighting device that may achieve the effect of adjusting different light patterns through a simple switching module mechanism. The disclosure provides a lighting device, including a housing, an elastic reflective element, alight-emitting unit, and a switching module. The housing is a hollow tubular structure. The elastic reflective element is configured in the housing. The elastic reflective element has a resisting surface and a reflective surface opposite to each other. The light-emitting unit is configured on the elastic reflective element to provide an illumination beam to the reflective surface. The switching module is configured in the housing and adapted to press against the resisting surface to transform the shape of the reflective surface. When the switching module has not pressed against the resisting surface, or when the switching module has pressed against the resisting surface but has not yet transformed the shape of the reflective surface, the reflective surface assumes a first state, and the illumination beam reflected by the reflective surface has a first light pattern. When the switching module presses against the resisting surface and transforms the shape of the reflective surface, the reflective surface assumes a second state, and the illumination beam reflected by the reflective surface has a second light pattern. Based on the above, in the lighting device of the disclosure, the lighting device includes the housing, the elastic reflective element, the light-emitting unit, and the switching module. The elastic reflective element has the resisting surface and the reflective surface opposite to each other, and the switching module is configured to press against the resisting surface to transform the shape of the reflective surface. When the switching module has not pressed against the resisting surface, or when the switching module has pressed against the resisting surface but has not yet transformed the shape of the reflective surface, the reflective surface assumes the first state, and the illumination beam reflected by the reflective surface has the first light pattern. When the switching module presses against the resisting surface and transforms the shape of the reflective surface, the reflective surface assumes the second state, and the illumination beam reflected by the reflective surface has the second light pattern. In this way, the surface shape of the reflective surface in the elastic reflective element may be adjusted through a simple switching module mechanism, and then the light pattern emitted by the lighting device may be switched to achieve optimized irradiation effects in different situations. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a lighting device collocated with a display device according to an embodiment of the disclosure. FIG. 2 is a schematic three-dimensional view of a lighting device according to an embodiment of the disclosure. FIG. 3A and FIG. 3B are schematic side views of the lighting device depicted in FIG. 2 showing different orientations of a reflective surface in a first state. FIG. 4A and FIG. 4B are schematic side views of the lighting device depicted in FIG. 2 showing different orientations of a reflective surface in a second state. FIG. 5A and FIG. 5B are schematic views of light paths in the lighting device depicted in FIG. 2 showing a reflective surface in a first state and a second state. FIG. 6 is a schematic perspective view of a switching module of the lighting device depicted in FIG. 2. FIG. 7A and FIG. 7B are partial schematic perspective views of the lighting device depicted in FIG. 2 showing a reflective surface in a first state and a second state. FIG. 8A and FIG. 8B are schematic views of a switching m