TECHNICAL FIELD
The disclosure relates to writing instruments, and particularly to a writing instrument providing illumination with a solid state lighting source module.
DESCRIPTION OF THE RELATED ART
Light emitting diodes' (LEDs) many advantages, such as high luminosity, low operational voltage, low power consumption, compatibility with integrated circuits, easy driving, long term reliability, and environmental friendliness have promoted their wide use as a light source. Now, light emitting diodes are commonly applied in environmental lighting.
Most commonly used writing instruments are difficult to use in dark environments, such as during a slide presentation.
Therefore, it is desirable to provide a writing instrument which can overcome the described limitations.
BRIEF DESCRIPTION OF THE DRAWINGS
Many aspects of the disclosure can be better understood with reference to the drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present writing instrument. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views.
FIG. 1 is a schematic view of a writing instrument providing illumination in accordance with a first embodiment.
FIG. 2 is a view similar to FIG. 1, with a solid state lighting source module of the writing instrument being moved to an operating position.
FIG. 3 is an enlarged view of an upper portion of the writing instrument of FIG. 1, wherein the solid state lighting source module is not in use.
FIG. 4 is an enlarged view of an upper portion of the writing instrument of FIG. 2.
DETAILED DESCRIPTION
Embodiments of a writing instrument providing illumination as disclosed are described in detail here with reference to the drawings.
Referring to FIGS. 1 and 2, a writing instrument 1 providing illumination includes a penholder 11, a pen core 12 with a tip (not labeled) which can be extended out of the pen holder 11 for writing or retracted into the penholder 11 when not use. The writing instrument 1 further includes a rotating plate 13 and a solid state lighting source module 14. The rotating plate 13 can rotate to a specific angle. Also referring to FIGS. 3 and 4, a plate connector 18 is at a top end of the penholder 11. The solid state lighting source module 14 is mounted on the rotating plate 13. A power source module (not shown) is arranged inside the penholder 11 providing power to the solid state lighting source module 14. The power source module can utilize a battery.
Particularly referring to FIGS. 3 and 4, the plate connector 18 at the top end of the penholder 11 includes at least one first metal electrode 15a and two recesses 17. The rotating plate 13 includes at least one second metal electrode 15b and two fasteners 16. When the rotating plate 13 is parallel to the penholder 11, the at least one second metal electrode 15b of the rotating plate 13 and the at least one first metal electrode 15a of the plate connector 18 do not contact each other. Thus, the first metal electrodes 15a and the second metal electrodes 15b are not electrically conductively connected together, and there is no power provided to the solid state lighting source module 14. At this position, the rotating plate 13 is at an angle with respect to the plate connector 18. The rotating plate 13 is positioned adjacent and substantially parallel to the penholder 11.
Referring to FIG. 4, when the rotating plate 13 is perpendicular to the penholder 11, the second metal electrodes 15b of the rotating plate 13 contact the first metal electrodes 15a of the plate connector 18, and the solid state lighting source module 14 is turned on. At this position, the rotating plate 13 is coplanar with the plate connector 18. The two fasteners 16 are received in the two recesses 18 to hold the solid state lighting source module 14 at the operating position.
The penholder 11 and the rotating plate 13 can be metal, polymer, or thermosetting material.
The solid state lighting source module 14 can be a light emitting diode (LED), organic light emitting diode (OLED), or laser.
While the disclosure has been described by way of example and in terms of exemplary embodiment, it is to be understood that the disclosure is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Patent Grant
8414140
