JPS6353641B2 - - 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 can be confirmed by turning on or off the light source, but if it 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 pilot lamp itself becomes bright and it becomes 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, includes forming an engaging pawl on the outer periphery of the front opening of the holder of a lamp unit, which is formed by attaching a lens to the front opening of a holder that houses a light source therein; , a hood having a hole bored in the outer circumferential surface of a hollow cylindrical portion with openings on both front and rear surfaces, and a flange portion protruding over the entire outer circumferential edge of the rear opening, and a hood for engaging the lamp body portion on the inner circumferential surface. The hood has a coupling groove formed with an engagement groove that engages with the claw, and the hood has a collar portion that is held between the coupling engagement engagement ring and the lamp body, and is attached to the front surface of the lamp body. The gist of the present invention is to provide a pilot lamp in which the hollow cylindrical portion prevents external light from directly hitting the lens.

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

First, in the first embodiment shown in FIGS. 1 to 3, A is a lamp body, and the lamp body includes a holder 1,
It is composed of 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 surface, and a reflecting plate 3 is attached to the wall surface 1b. In the front opening of holder 1,
A condensing lens 4 is attached so that the incident parallel light rays from the light source 2 are emitted so as to be condensed on the optical axis of the lens. Also, on the outer periphery of the front opening of the holder 1, there is a groove 6a for engaging a coupling ring 6, which will be described later.
An engaging claw 1c is formed to fit into the engagement claw 1c. The claw 1c is further provided on the outer periphery of the front opening of the holder 1.
Similarly, a drainage groove 1d and a positioning protrusion 1e are formed to connect or lock with the drainage groove 6b and positioning groove 6c of the coupling ring 6, respectively.

Reference numeral 5 designates 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 area 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 A by holding it in the same position. 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.

Therefore, in this embodiment, the front opening of the cylindrical portion of the hood mainly emits parallel light rays from the light source that is emitted in a condensed state from the lens, and the hole bored in the outer peripheral surface of the cylindrical portion Also, light rays reflected and refracted by the reflector and lens are emitted.

Although the condensing lens 4 shown in FIGS. 2 and 3 is a plano-convex lens, it may also be a biconvex lens, and as shown in FIG.
A biconvex lens 4' is used in which the optical axis of the rear spherical surface 4'b is inclined with respect to the optical axis of the front spherical surface 4'a. It is also possible to emit the light in a focused state in a direction inclined at a predetermined angle with respect to the optical axis of the side spherical surface 4'a.

Therefore, in the embodiment shown in FIG. 4, the parallel light rays from the light source that are emitted in a condensed state by the lens are emitted from the hole provided on the outer peripheral surface of the cylindrical part of the hood, and are reflected and reflected by the reflector plate and the lens. The refracted light beam is mainly emitted from the front opening of the cylindrical portion.

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.

Furthermore, when a condensing lens 4' like the embodiment shown in FIG. 4 is used, the hole 5c of the holder 5
In order to maintain highly efficient emitted light from the hood, the lens 4' is also rotated in accordance with the rotation of the hood 5.
The lens 4' may be fixed to the hood 5.

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. In addition, since the hood is rotatable, the viewer can rotate the hood and set the viewing hole in the desired direction.
This makes it possible to easily and quickly respond to the work of checking the lighting state. Furthermore, when attaching the hood to the lamp body, by fitting the hood claw into the groove of the coupling ring, the flange of the hood is sandwiched between the holder and the coupling ring, and the hood is integrated. There is no need for adhesive work, and the installation work is simple. 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 the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the pilot lamp according to the present invention, Fig. 2 is a bottom view showing a half section of the pilot lamp in a fully assembled state, and Fig. 3 is the same pilot lamp. FIG. 4 is a vertical side view showing another embodiment of the pilot lamp of the present invention. A... Lamp body, 1... Holder, 1c... Engagement claw, 1b... Drainage groove, 2... Light source, 3...
Reflector, 4, 4'...Lens, 5...Hood, 5
a...Cylinder part, 5b...Brim part, 5c...Hole, 6...
...Cup ring, 6a...Engagement groove, 6b...Drainage groove.

Claims (1)

[Scope of Claims] 1. In a pilot lamp in which a light body is constructed by attaching a lens to a front opening of a holder that houses a light source inside, an engaging claw is provided on the outer periphery of the holder front opening of the light body. In addition, a hole is bored in the outer circumferential surface of a hollow cylindrical portion that is open on both the front and rear surfaces, and a hood is provided with a brim portion that protrudes over the entire outer circumferential edge of the rear opening, and the lamp body portion is formed on the inner circumferential surface of the hood. The hood has a coupling ring formed with an engagement groove that engages with the engagement claw of the hood, and the hood is held between the coupling and the lamp body part, with the collar part of the hood being fitted and engaged, and 1. A pilot lamp, wherein the pilot lamp is attached to the front surface, and the hollow cylinder portion is configured to prevent external light from directly hitting the lens. 2. The pilot lamp according to claim 1, wherein the hood is rotatably attached to the front surface of the lamp body. 3. A patent characterized in that grooves are provided at the lower peripheral edge of the front opening of the holder of the lamp body and at the lower rear end of the coupling ring, and when the two grooves are fitted and engaged, the two grooves are connected to form one drainage hole. Claim 1
Pilot lamp as described in section. 4. Claim 1, characterized in that the lens uses a lens with a rear spherical surface whose optical axis is partially inclined with respect to the optical axis of the front spherical surface, and the lens is fixed to a hood. Pilot lamp as described in section.