JPS612187A - Lamp display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a lamp display device that displays the operating status of equipment by emitting light.Technical aspects and problems of the invention As a light source, it has a long lifespan.

In view of the low price of consumption type J1, it is common to use L, ]l) lamps. However, LED lamps are darker than incandescent lamps, and it is difficult to obtain a luminous intensity of 4 minutes. Therefore, as shown in FIG. 4, a lens 2 is arranged facing the optical axis direction of the LED lamp 1, and this lens 2
There is an ED lamp in which a comparatively high illumination intensity can be obtained by expanding the luminous flux from the ED lamp 1 and displaying the emitted light on the display section 3, which is the diffusing surface of the lens 2. However, since the LED lamps 1 and lenses 2 must be arranged vertically, a large space is required.

It has the disadvantage that it is particularly unsuitable for child-isk top type equipment. Next, the one shown in FIG. 5 is another example in which a plurality of L E l) chips 4 are covered with a reflective case 5 and L
The luminous flux from the ED chip 4 is reflected within a reflection case 5, and displayed on a display section 6, which is a diffuser plate. Although high illuminance can be obtained with such a device, 1. ,, ED≠ A plurality of protrusions 4 are required, and the reflective case 5 also increases the material cost.

Furthermore, in the above example, either display section 3 or 6
The display units 3 and 6 are also configured to show the strongest illuminance when 1L from the orthogonal direction. therefore,
There is a drawback that the illuminance is insufficient when the display sections 3 and 6 are viewed from an oblique direction.

purpose of invention The present invention was made in view of these points.

The object of the present invention is to obtain a thin and inexpensive lamp display device that exhibits the strongest illuminance for operation.

SUMMARY OF THE INVENTION The present invention allows light from a LET, ) lamp to be reflected by a prism and illuminated in any direction, making it possible to create a thin device at low cost that provides the strongest illuminance toward the operating fluid. It is configured so that it can be obtained.

Embodiment of the Invention An embodiment of the present invention will be described with reference to FIGS. 1 to 3. This embodiment is an example in which the present invention is applied to a desktop printer 10, and this printer 10 is provided with various switches 11 and a display section 12 corresponding to these switches 11 on one side of the top surface. The switches 11 and the display section 12 are arranged in parallel in the vertical direction, and are inclined at an angle α in the horizontal plane with respect to the arrangement direction. This angle α is set so that the display section 12 faces toward the operator of the printer 10, and the switch 11 is set for design reasons.

Next, a mechanism for illuminating the display section 12 will be explained.6 A PCCl3F is fixed at a predetermined position in the printer 10, and a prism 16 is installed between it and the mounting hole 15 provided in the top plate 14 of the PCCl3F printer 10. Fixed. This prism 1116 is a reflective type right triangular prism, and one of its right-angled sides serves as an illumination surface 17 that emits incident light, and is exposed to the outside through the mounting hole 15 as the display section 12. Further, another surface constituting the right angle side is an incident surface 18. An LED lamp 19 whose optical axis direction is opposed to the incident surface 18 is provided and is fixed to the PC board 13. The positional relationship between these prisms 16 and the LED lamps 19 is as follows:
Printer] The front side of 0 is the prism 16, the rear side is the LED
The lamp is 19. Further, the inclined surface of the prism 16 reflects the incident light from the entrance surface 18 to the illumination surface 17.
It serves as a reflective surface 20 that leads to. The angle 0 between this reflective surface 20 and the optical axis direction of the LED lamp 19 is set to 0>1356.

Note that 1) the incident surface 18 and reflective surface 2 of the IJ prism 16;
0. Each of the illumination surfaces 17 is a surface having a diffusion effect.

In such a configuration, ON/OFF of the switch 11
LE lamp 1 that emits light in response to the flashing signal from F
The light beam 9 enters from the entrance surface 18 of the prism 16, is reflected by the reflection surface 20, reaches the illumination surface 17, and is displayed on the display section 12, which is the illumination surface 17.

At this time, the luminous flux of the light emitted from the illumination surface 17 is directed toward the operator of the printer 10, and the illuminance seen by the operator is improved. That is, the light beam reflected by the reflective surface 20 is reflected at an obtuse angle by the angle θ, and is directly transmitted from the illumination surface 17 to the printer 1.
Go out in front of 0.

Further, one display section 12 is oriented toward the operator by an angle of inclination α. Therefore, the light beam emitted from the illumination surface 17 is directed toward the operator located in front of the pudding 910. Furthermore, by passing the light beam through each surface of the prism 1116 having a diffusion effect and reflecting it, the illumination range of the illumination surface 17 is expanded and visibility is improved.

Furthermore, since the luminous flux emitted from the LED lamp 19 in the horizontal direction is reflected in the vertical direction by the lens 11 and 6 for display, the device can be made thin, which is advantageous for desktop type equipment.

Furthermore, by arranging the display units 2 in a vertical direction, the narrow display area of the desktop printer 10 can be used advantageously. The structure of such an apparatus and the direction in which the display sections are arranged are designed to reduce the size of the main body of the printer.

Furthermore, according to this embodiment, only one LED lamp 19 is sufficient for one display section 12, and the material of the prism 16 can be made of any type such as glass or plastic, so the material cost is low. can be provided.

In addition, in implementation, only the negative or two surfaces of the prism 16 may be formed as surfaces having a diffusion effect, or a diffusing agent may be mixed into the prism 16.

Effects of the Invention In the present invention, the angle between the direction of incidence of the incident light and the reflecting surface is 13
A reflective prism larger than 5 degrees is provided, and the light emitted from the LED lamp is incident on this prism to illuminate the prism in a direction that forms an obtuse angle with respect to the direction of incidence, and the illumination surface is tilted toward the operator. Therefore, visibility can be improved by directing the direction of the strongest illuminance toward the operator, and since the direction of the light flux is changed using a prism, a thin device can be obtained, and therefore, it is possible to When applying ＼, the equipment can be made smaller, and the material cost is 1-
It is cheap and has the advantage of being able to provide inexpensive equipment.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the present invention, Fig. 2 is a perspective view showing an application example of a desktop printer\, and Fig. 3 is a side view showing an example of the present invention.
The figure is a plan view showing an enlarged operation section, FIG. 4 is a side view showing one conventional example, and FIG. 5 is a side view showing another example. 12...Display section, 16...Prism, 17...Illumination surface, 18...Incidence surface, 19...LED lamp, 20
・Reflective surface

Claims (1)

[Claims] A reflective prism is provided in which the angle between the incident direction of the incident light and the reflecting surface is larger than 135 degrees, an LED lamp is provided on the incident surface of this prism with the optical axis direction facing each other, and these prisms and the LED lamp are connected. 1. A lamp display device, characterized in that a plurality of prisms are provided, and the prisms are arranged in a row in a vertical direction, with the light emitting surfaces of the prisms serving as display parts, and the prisms are fixed by tilting the light emitting surfaces with respect to the direction in which the prisms are arranged.