JPH0135441B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pilot lamp for displaying the status of various devices and equipment.

A pilot lamp, which is used to display the status of various devices, usually has a light source housed inside a holder and a lens attached to the front opening.
The display contents are checked by turning on and off the light source, but if the lens is installed in a place where it is exposed to strong external light such as direct sunlight, the lens may be damaged by this external light. This has the disadvantage that the light shines brightly, making it difficult to distinguish whether the pilot lamp itself is lit or not.

The present invention has been made to eliminate these drawbacks, and its purpose is to provide a pilot that can always exhibit sufficient visibility even when installed in a location exposed to external light. The idea is to provide a lamp.

The present invention, which has been made to achieve this object, is a pilot lamp in which a hood and a lens are attached to the front opening of a holder that houses a light source inside to form a lamp body, and the hood has openings on both the front and rear sides. A hole is formed in the hollow cylindrical part, and a hole for emitting light from the light source in the same way as the front opening is provided on the outer peripheral surface of the hollow cylindrical part. has a rear spherical surface that is inclined toward the hole of the hood, and the lens is located at a contact portion between the rear opening of the hood and the front opening of the holder. The main point is the configuration of the pilot lamp.

A detailed explanation will be given below with reference to the drawings.

First, in the embodiment shown in FIGS. 1 to 3,
Reference numeral A denotes a lamp body section, and the lamp body section is composed of a holder 1, a light source 2, and a condensing lens 4.

Holder 1 has a latspa shape as a whole,
A light source 2 is arranged at the back of the internal space 1a. This internal space 1a widens in a tapered shape toward the front opening, and a reflecting plate 3 is attached to its wall surface 1b. In the front opening of holder 1,
A condensing lens 4 is attached to condense the incident parallel light from the light source 2 and emit it in a predetermined direction, and also make the reflected light from the reflection plate emit in a predetermined direction. Furthermore, on the outer periphery 15 of the front opening of the holder 1, an engaging claw 1c is formed into which an engaging groove 6a of a coupling ring 6, which will be described later, is fitted. The claw 1c is further provided on the outer periphery 1f of the front opening of the holder 1.
Similarly, a drain groove 1d and a positioning protrusion 1e are formed to connect or lock with the drain groove 6b and positioning groove 6c of the coupling ring 6, respectively.

Reference numeral 5 denotes a hood, which includes a hollow cylindrical portion 5a that is open on the front and rear sides, and a collar portion 5 that protrudes in the circumferential direction over the entire circumferential surface of the rear opening of the cylindrical portion 5a.
It is more familiar than b. Further, a hole 5c is provided in a part of the outer circumferential surface of the cylindrical portion 5a, and the hole, together with the front opening, forms a radiation hole for the light irradiated by the light source.

Reference numeral 6 denotes a coupling ring, which has an engagement groove 6a on its inner peripheral surface that engages with the engagement claw 1c of the holder 1, and allows the collar 5b of the hood 5 to rotate between it and the holder 1 when engaged. The hood 5 is attached to the front surface of the lamp body part A by holding it in this state. 6b is a drainage groove, which is connected to the drainage groove 1d of the holder 1 when engaged with the holder 1;
It is designed to form two drainage holes.
Note that 6c is a groove for locking the positioning projection 1e of the holder 1, and the coupling 6 is connected to this projection 1e.
It also has the role of preventing rotation.

A spring washer 7 is interposed between the holder 1 and the hood 5, and its elastic force holds the hood 5 in a pressed state between the holder 1 and the coupling ring 6. .

Reference numeral 8 denotes a rubber cover that covers the lamp body A, and has a groove 8a for attachment to the mounting plate, and when installed on the mounting plate, absorbs vibrations from the mounting plate and protects the lamp body A. It plays a protective role.

The structure of the condensing lens 4 used in the case is a biconvex lens, which has a front spherical surface 4a and a rear spherical surface 4b, and the rear spherical surface 4b has its optical axis tilted. It is formed of. Parallel light rays from the light source 2 disposed on the optical axis of the front spherical surface 4a are emitted in a focused state in a direction inclined at a predetermined angle with respect to the optical axis of the front spherical surface 4a.

Therefore, the parallel light rays from the light source 2 that are emitted in a condensed state by the rear spherical surface 4b of the lens 4 are made to radiate from the hole 5c provided in the outer peripheral surface of the cylindrical portion of the hood 5, and are The reflected and refracted light beams can be emitted mainly from the front opening of the cylinder.

In the embodiment shown in the drawings, the reflective plate 3 is attached to the tapered wall surface 1b of the holder 1, but a reflective layer may be formed on the wall surface 1b by means such as coating or vapor deposition.

In addition, in the above explanation, the hood 5 and the holder 1
In this example, the hood 5 brim 5b and the front opening outer periphery 1f of the holder 1 can be connected together, for example, as shown in FIG. 3, without necessarily using the coupling 6. They may be integrated by means such as adhesion or ultrasonic welding. In this case, the hood 5 no longer rotates, but can be used in departments that do not require rotation.

The pilot lamp according to the present invention configured in this way has a hood in the front of the lamp body, so that the light emitted from the lamp body is not blocked, and the outside light that becomes a false light is prevented from entering the lamp body. Since it can block sunlight, it has sufficient visibility for outdoor motors that are directly exposed to sunlight, or for outboard motors that are subject to direct sunlight and intense diffused reflection from the sea. In addition, the hood has holes for visibility in the cylindrical surface in addition to the front opening, so even when visual inspection from the front side is troublesome, the lamp can be accessed through this hole. You can check the lighting status of the parts. Furthermore, the pilot lamp has a drainage hole at the bottom, allowing rain or spray that has entered the hood to quickly drain away, thereby preventing water from stagnating inside the hood, which would impede effective radiation. It can be expected to have excellent effects such as:

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing one embodiment of the pilot lamp according to the present invention, Fig. 2 is a vertical cross-sectional side view of the pilot lamp in the assembled state, and Fig. 3
The figure is a longitudinal sectional side view similar to FIG. 2 showing another example. A...Light body part, 1...Holder, 1b...Drainage groove, 1f...Front opening outer periphery, 2...Light source,
3...Reflector, 4...Lens, 4a...Front side spherical surface, 4b...Rear side spherical surface, 5...Hood, 5a...
...Cylinder part, 5b...Brim part, 5c...Hole.

Claims (1)

[Claims] 1. In a pilot lamp in which a hood and a lens are attached to the front opening of a holder that houses a light source inside to form a lamp body, the hood is formed into a hollow cylinder with openings on both the front and rear sides, and has the same shape as the front opening. A hole for emitting the light source irradiation light is provided on the outer peripheral surface of the hollow cylindrical portion, and the lens has a part of the optical axis inclined toward the hole of the hood with respect to the lens optical axis of the front spherical surface. 1. A pilot lamp characterized in that the lens has a rear spherical surface having a spherical shape, and the lens is located at a contact portion between a rear opening of the hood and a front opening of the holder.