GUILLOTINE-STYLE HEADLIGHT DIMMER SWITCHING DEVICE

Abstract

A guillotine-style headlight dimmer switching device includes: a light socket having a reflecting surface, wherein a front edge of the reflecting surface has a fixing portion, the fixing portion having an opening; a light source disposed on the reflecting surface; a light-blocking plate pivotally connected to the fixing portion and having a first board and a second board, the second board normally blocking the opening, the first board having a push plate protruding; and a solenoid valve fixed to the fixing portion and having a push rod capable of moving by extension and retraction, the push rod having a push element, wherein the push element of the push rod moving by extension and retraction moves along a pushing path, the push plate being located at the pushing path, so as to cut manufacturing costs, render assembly simple and quick, reduce total volume of the headlight, thereby achieving miniaturization.

Claims

1. A guillotine-style headlight dimmer switching device, comprising: a light socket having a reflecting surface, wherein a front edge of the reflecting surface has a fixing portion; the fixing portion having an opening; a light source disposed on the reflecting surface; a light-blocking plate pivotally connected to the fixing portion and having a first board and a second board, the second board normally blocking the opening, the first board having a push plate protruding; and a solenoid valve fixed to the fixing portion and having a push rod capable of moving by extension and retraction, the push rod having a push element, the push element being normally not in contact with the push plate, wherein the push element of the push rod moving by extension and retraction moves along a pushing path, the push plate being located at the pushing path.

2. The guillotine-style headlight dimmer switching device of claim 1, wherein the fixing portion is disposed near a front edge of the reflecting surface.

3. The guillotine-style headlight dimmer switching device of claim 1, wherein the opening is disposed above the fixing portion.

4. The guillotine-style headlight dimmer switching device of claim 1, wherein a light beam emitted from the light source and then reflected by the reflecting surface passes the second board from above to form a low beam.

5. The guillotine-style headlight dimmer switching device of claim 1, wherein the push element pushes the push plate so that the second board is driven by the first board to rotate and thus no longer blocks the opening, thereby allowing a light beam emitted from the light source and reflected by the reflecting surface to pass through the opening, so as to form a high beam.

6. The guillotine-style headlight dimmer switching device of claim 1, wherein the first board and the second board are perpendicular to each other, and an end portion of the second board is confined to a limiting element on the fixing portion.

7. The guillotine-style headlight dimmer switching device of claim 1, wherein a pivotal end is disposed between the first board and the second board, the pivotal end being pivotally connected to the fixing portion and having a torsional spring for exerting a torsional force under which the second board normally blocks the opening.

8. The guillotine-style headlight dimmer switching device of claim 7, wherein the torsional spring has a first end and a second end, the first end being positioned at a positioning element on the fixing portion, and the second end being positioned on the push plate.

9. The guillotine-style headlight dimmer switching device of claim 1, further comprising a lampshade fixed to the fixing portion.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0021] FIG. 1 is a perspective view of an embodiment of the present disclosure;

[0022] FIG. 2 is a cutaway view of the embodiment of the present disclosure;

[0023] FIG. 3 is a schematic view of the embodiment of the present disclosure, showing a light-blocking plate for normally blocking an opening;

[0024] FIG. 4 is a schematic view of the embodiment of the present disclosure, showing a light beam passing a second board from above to form a low beam;

[0025] FIG. 5 is a schematic view of the embodiment of the present disclosure, showing that the light-blocking plate no longer blocks the opening; and

[0026] FIG. 6 is a schematic view of the embodiment of the present disclosure, showing a light beam passing through an opening to form a high beam.

DETAILED DESCRIPTION OF THE INVENTION

[0027] Referring to FIG. 1, FIG. 2 and FIG. 3, a guillotine-style headlight dimmer switching device provided in an embodiment of the present disclosure comprises a light socket (1), a light source (2), a light-blocking plate (3), a solenoid valve (4) and a lampshade (5).

[0028] The light socket (1) curves inward and thus has a reflecting surface (11). The light socket (1) has a fixing portion (12) near a front edge of the reflecting surface (11). The fixing portion (12) has an opening (13). The opening (13) is flanked by a positioning element (14) and a limiting element (15).

[0029] The light source (2) is disposed on the reflecting surface (11). The light source (2) emits a light beam which falls on and then reflects off the reflecting surface (11) so that the light beam passes through the opening (13) to form a high beam.

[0030] The light-blocking plate (3) is pivotally connected to the light socket (1). The light-blocking plate (3) has a first board (31) and a second board (32) which are perpendicular to each other. A pivotal end (33) is disposed between the first board (31) and the second board (32). The pivotal end (33) is pivotally connected to the fixing portion (12), so as to form a guillotine-style structure. The pivotal end (33) has a torsional spring (34). The torsional spring (34) has a first end (341) and a second end (342). The first end (341) is positioned at the positioning element (14) on the fixing portion (12). Under the torsional force exerted by the torsional spring (34), the second board (32) normally blocks the opening (13). The light beam emitted from the light source (2) and then reflected by the reflecting surface (11) passes the second board (32) from above to form a low beam. A push plate (35) is protrudingly disposed on the first board (31). The second end (342) of the torsional spring (34) is positioned on the push plate (35). An end portion of the second board (32) is confined to the limiting element (15) on the fixing portion (12) to prevent the second board (32) from going beyond the height of the fixing portion (12).

[0031] The solenoid valve (4) is fixed to the fixing portion (12) of the light socket (1). The solenoid valve (4) has a push rod (41) capable of moving by extension and retraction when electrically powered. An end portion of the push rod (41) has a push element (42). Normally, the push element (42) is not in contact with the push plate (35) of the light-blocking plate (3). The push element (42) of the push rod (41) moving by extension and retraction moves along a pushing path. The push plate (35) is located at the pushing path.

[0032] The lampshade (5) is fixed to the fixing portion (12) of the light socket (1).

[0033] As shown in FIG. 3 and FIG. 4, a low beam is normally provided at the commencement of use, by controlling the push rod (41) of the solenoid valve (4) to retract so that the push element (42) of the push rod (41) does not come into contact with the push plate (35) on the light-blocking plate (3). Hence, the first board (31) of the light-blocking plate (3) is not subjected to any push, and thus the second board (32) can normally block the opening (13) under the torsional force exerted by the torsional spring (34). Therefore, the light beam emitted from the light source (2) can reflect off the reflecting surface (11) so that the light beam can only pass the second board (32) from above to form a low beam (A). The low beam (A) illuminates a front area a short distance away.

[0034] Referring to FIG. 5 and FIG. 6, to switch to a high beam, it is necessary to cause the push rod (41) of the solenoid valve (4) to extend so that the push element (42) of the push rod (41) moves along the pushing path. Since the push plate (35) of the light-blocking plate (3) is located at the pushing path, the push element (42) of the push rod (41) pushes the push plate (35) so that the first board (31) of the light-blocking plate (3) is subjected to a push; then, the second board (32) is driven by the first board (31) to rotate about the pivotal end (33), thereby compressing the torsional spring (34). Owing to its rotation, the second board (32) moves downward relative to the opening (13) and thus no longer blocks the opening (13). Therefore, in addition to the low beam (A), the light beam emitted from the light source (2) reflects off the reflecting surface (11) and then passes through the opening (13) to form a high beam (B). The high beam (B) illuminates a front area a long distance away. Furthermore, owing to the second board (32) of the light-blocking plate (3), the light-blocking plate (3) stays away from the focus of thermal radiation of the light source (2); hence, heat otherwise accumulated on the light-blocking plate (3) and transferred to the solenoid valve (4) is greatly reduced, thereby extending the service life of the guillotine-style headlight dimmer switching device.

[0035] Therefore, the present disclosure is advantageous in that the light socket (1) has the fixing portion (12) near the front edge of the reflecting surface (11), and the fixing portion (12) has the opening (13), thereby dispensing with the conventional components, such as a fixed light-blocking plate or fixing plate. Hence, the present disclosure cuts manufacturing costs and renders assembly simple and quick. The present disclosure is also advantageous in that the push rod (41) of the solenoid valve (4) directly extends and pushes the push plate (35) of the light-blocking plate (3) so that the second board (32) of the light-blocking plate (3) no longer blocks the opening (13). Therefore, the total volume of the headlight is reduced, thereby achieving miniaturization.

[0036] In conclusion, the description of the aforesaid embodiments enables persons skilled in the art to gain insight into the operation, use and advantages of the present disclosure. The present disclosure is disclosed above by preferred embodiments, but the preferred embodiments are not restrictive of the scope of implementation of the present disclosure. Hence, all simple, equivalent changes and modifications made to the aforesaid embodiments in accordance with the specifications and claims of the present disclosure shall fall within the scope of the present disclosure.