Light-emitting pen with a light-emitting body at a middle section of a pen tube

#The present invention relates to light-emitting pens, and particularly to a light-emitting pen with a light-emitting body at a middle section of a pen tube, as the front pen tube is removed, rear pen tube becomes a luminous tool.

#In the prior art, light-emitting pens may be classified as a button pressing type, a rotary type, and a pushing button type. The button pressing type light-emitting pen has a button at one lateral side of the pen. The light-emitting pen lights up or does not light up by pressing the light-emitting pen, but the lifting and descending of the filler of the light-emitting pen can not be controlled. The rotary type light-emitting pen lights up or does not light up by rotating a front pen tube clockwise or counterclockwise, and meanwhile, the lifting or descending of the filler can be controlled. The pressing type light-emitting pen has a button at a distal end of the pen. The pen lights up or does not light up by pressing the button at the distal end of the light-emitting pen, and meanwhile, the lifting or descending of the filler can be controlled. The rotary type or pressing type light-emitting pen has two stages in controlling the lighting up of the light-emitting pen. Namely, to rotate (or press) the pen tube (or a button), the light-emitting pen will light up, while a further action will cause the light-emitting pen not to emit light. However, as the filler protrudes out, the light-emitting body must light up, but this feature has no use in daytime and just wastes power.

#Accordingly, the primary object of the present invention is to provide a light-emitting pen having a front pen tube and a rear pen tube. The front pen tube has a spring and a filler, and the rear pen tube has a light-emitting element and a resisting element. An upper end of the filler has a light-emitting element; and the resisting element is installed above the light-emitting element. The light-emitting element has a light collecting tube and a battery tube. A front end of the light collecting tube is installed with a light collecting piece or light dispersing piece. A metal button, a plurality of serial connecting batteries, a spring, a metal conductive seat and a light-emitting body are sequentially installed in the battery tube. A lateral wall of the battery tube has a metal conductive wire, and a lower end of the conductive wire is in contact with a conductive seat. An upper end thereof protrudes out to be above the battery tube. The resisting element has a push tube. A lower end of the push tube has a metal cap. The metal cap is in contact with a tenon on the metal button. When a user presses a button on a top end of the resisting element, the metal cap will be in contact with the tenon of the metal button and an upper end of the conductive wire so that the light-emitting body emits light. On the contrary, when the metal cap is not in contact with an upper end of the conductive wire; and when the metal cap is not in contact with an upper end of the conductive wire, the light-emitting body does not emit light.

#FIG. 1 is an exploded perspective view of the light-emitting pen of the present invention.

#FIG. 2 is a cross sectional view of the light-emitting pen of the present invention.

#FIG. 3 is a perspective view of the light-emitting pen of the present invention.

#An exploded perspective view of the light-emitting pen of the present invention is illustrated in FIG. 1. FIG. 2 is a whole cross sectional view of the light-emitting pen of the present invention which has been assembled. The light-emitting pen 10 of the present invention has a front pen tube 1 and a rear pen tube 2. A middle ring 3 is used to combine the two pen tubes. One end of the middle ring 3 has a threaded tube 31 which can be screwed into a threaded hole 21 at a lower end of the rear pen tube 2. Another and the middle ring 3 is a threaded groove 32 for being screwed by the threaded tube 31 at an upper end of the front pen tube 1. When the three components are combined, a main body of the pen is formed. It should be noted that preferably, the front pen tube 1 must be transparent and the rear pen tube 2 is a semi-transparent body. A spring 12 and a filler 13 are installed in the front pen tube 1. The upper end of the filler has a stopping post 131 with a larger diameter for resisting against the spring 11. A resisting element 4 and a light-emitting element 5 are installed in the rear pen tube 2. The resisting element 4 is positioned on the light-emitting element 5.

#The resisting element 4 is a prior art structure and can be found in a generally used ball pen. The resisting element 4 is generally formed by a positioning tube 41, a middle tube 42 in the positioning tube 41, a push tube 43 in the middle tube 42, a metal cap 44 in the bottom of the push tube 43, a spring 45 above the middle tube 42, and a button 46 screwed at the upper end of the middle tube 42. After the positioning tube 41 is assembled with the rear pen tube 2, the stop ring 413 resists against the rear pen tube 2 so that as the button 46 is pressed by a finger, the middle tube 42 and the push tube 43 will descend. Moreover, by the spring 45, it will move upwards. By the ratchet teeth 411 of the positioning tube 41, the ratchet teeth 421 of the middle tube 42, and the ratchet teeth 431 of the push tube 43, in the process of lifting and descending, the push tube 43 will rotate through half tooth. Moreover, whether the push tube 43 protrudes out of the lower side of the middle tube 42 can be determined by determining whether the projecting track 432 is guided into the positioning tube 41 when the push tube 43 enters into the middle tube 42. If the projecting track 432 has entered into the guide track 412, then the whole push tube 43 will be embedded into the middle tube 42 as the push tube 43 moves up. On the contrary, if the push tube 43 does not enter into the guide track 412, then the lifted push tube 43 resists against the ratchet teeth 411 so that the push tube 43 protrudes out of the lower side of the middle tube 42.

#The main body of the light-emitting element 5 is a light collecting tube 51 and a battery tube 52. The front end of the light collecting tube 51 is installed with a light collecting piece 53. A metal button, a plurality of serial connecting batteries 55, a spring 56, a metal conductive seat 57 and a light-emitting body 58 are sequentially installed in the battery tube 52. The upper end of the battery tube 52 has a through hole 521, and the lower end thereof has a hole 522 (or threaded hole). The through hole 521 serves for protruding the tenon 541 of the metal button 54. The hole 522 (or threaded hole) serves for engaging or screwing the conductive seat 57. The light-emitting body 58 fixed below the conductive seat 57 may be a light-emitting diode or a small light. A spring 56 is connected to the conductive seat 57. The spring resists against the negative end of a battery 55. The positive end of the battery 55 is in contact with the metal button 54. The outer wall of the battery tube 52 is embedded with a metal conductive wire 59. The lower end 591 of the conductive wire 59 is in contact with the conductive seat 57. The upper end 582 thereof protrudes from the upper side of the battery tube 52.