JPH057667Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an alarm display device, and particularly to an alarm display device using an LED lamp as a light source.

[Technical background of the invention]

For the purpose of whole body management of seriously ill patients in hospitals etc.
Bedside monitors, which mainly monitor electrocardiograms and blood pressure, and respiratory monitors, which monitor ventilation and gas exchange, have been installed, and in recent years, the data measured by these monitors has become centrally managed. . This monitoring of emergencies for seriously ill patients is normally carried out on a central monitor at a nursing station, etc., but in case there is no one at the nursing station, an alarm display device is installed at the patient's bedside to notify of emergencies. be. In order to make these alarm devices easily visible from a distance, the light source is turned on and off electrically and blinks, or the light source is surrounded by a cylindrical shielding plate with slits formed in it. It is rotated by a motor etc. In this case, a filament type light bulb has traditionally been used as a light source.

[Problems with background technology]

Among the conventional alarm display devices mentioned above, those that use filament type light bulbs and flash by electrically turning the power on and off have a short lifespan due to frequent flashing, making it difficult to replace the light bulb. There is a problem in that the number of shielding plates increases and it becomes complicated, and there is also a problem in that the device for rotating the shielding plate becomes large because a motor or the like is used.

[Purpose of invention]

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a small and durable alarm display device that can be easily confirmed from all horizontal directions.

[Summary of the idea]

The present invention is a surface-emitting type light emitting diode (hereinafter referred to as
The intended purpose is achieved by arranging a reflector and a plurality of prisms with conical concave portions on the bottom side on the optical axis of the LED (referred to as an LED).

[Example of idea]

Hereinafter, one embodiment of the alarm display device according to the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. A bottom plate 3 made of a thin non-magnetic plate is fixed to the bottom surface of the substantially cylindrical support 1, holding a magnet 2 therebetween.
A lamp holder 4 is provided at one end of the supporting body 1 opposite to the bottom surface, and one end of a conductor 5 is connected to the lamp holder 4, and the other end is connected to a connector 7 via a shielded cord 6. It is connected. A surface-emitting type LED lamp 8 is removably screwed onto the lamp holder 4, and the LED lamp 8 is covered with a cylindrical cover 9. The bottom of this cover 9 is attached to the lamp holder 4 of the support 1.
A plurality of prisms 10, for example three prisms 10, and a reflector 11 are installed on the inner peripheral surface of the LED lamp 8 in a removable manner.
They are stacked and fixed on the optical axis of the LED lamp 8. The prism 10 is disc-shaped and has a conical recess on its bottom surface. Each of the recesses is directed toward the light emitting surface of the LED lamp 8, and the center of the recess is on the optical axis of the LED lamp 8. Further, a red filter 12 with a black slit is formed on the circumferential surface of the cover 9 facing the prism 10.

The operation of this embodiment configured as described above will be explained below. Surface-emitting LED lamps generally have the characteristic of emitting light in one direction, which is approximately close to the optical axis direction, as shown in Figure 2. For this reason, it is difficult to see from a direction substantially perpendicular to the optical axis, but if a diffusion filter composed of a prism 10 having the shape shown in this embodiment is provided, the light will be reflected as shown in FIG. diffused laterally approximately perpendicular to the axis,
What's more, the light is evenly distributed in all directions around the periphery, so you can see the light from all directions. Furthermore, by stacking the prisms 10 in multiple stages, the light from the LED lamp 8 can be utilized close to the point at which the light attenuates when a filter is used. Furthermore, a reflector 11 provided on the top of the prism 10 reflects orthogonal light to minimize the loss of light quantity. A red filter with black slits formed in a cover 9 surrounding these prisms 10 facilitates alarm confirmation from a bright room such as a central monitoring room or from a remote location. In this way, the light of the blinking LED lamp can be easily seen from the surroundings.

As described above, according to this embodiment, the light source
Since the LED lamp 8 is used, it is durable even if it flashes frequently, and the lamp needs to be replaced less frequently.
Furthermore, since no motor is used, the entire device is compact, and even when a large number of monitors are used side by side, each monitor can be provided with this alarm display device. Even if a defect should occur in the LED lamp, the cover 9 can be easily removed, so the LED lamp can be easily replaced. Moreover, the alarm can be easily confirmed from all directions even in a brightly lit room.

[Effect of idea]

As mentioned above, according to the present invention, an LED lamp is used as the light source of the alarm display device, and the light is dispersed in all horizontal directions using multiple prisms, so the alarm can be confirmed from all directions with a small size. It has now become possible to provide an alarm display device that allows the lamp to be replaced more frequently.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the alarm display device according to the present invention, and Figs. 2 and 3 are the same as Fig. 1.
FIG. 3 is a side view showing the effect of the LED lamp. 8...LED lamp (light source), 10...prism, 11...reflector.

Claims (1)

[Scope of utility model registration request] Surface-emitting type light-emitting diodes, each having a conical recess on the bottom surface, the recess facing the light-emitting surface of the light-emitting diode, and the center of the recess being on the optical axis of the light-emitting diode. a plurality of disc-shaped prisms provided at a position further away from the prism furthest from the light-emitting diode among the plurality of disc-shaped prisms, the reflective surface of which is directed toward the light-emitting surface of the light-emitting diode; and a reflecting plate provided perpendicularly to the optical axis.