JPS606962Y2 - headlights - Google Patents

Description

[Detailed explanation of the invention] This invention relates to headlights for automobiles, etc.
This invention relates to a device that can be switched between light and diffused light.

Hereinafter, the headlamp of the present invention will be described as an example of an automobile headlamp shown in the drawings.

1 is a translucent lens, and 2 is a resin rear case whose front opening is covered with the lens 1.

Reference numeral 3 denotes a large-diameter metal reflector whose peripheral edge 4 is fixed to the case 2 and has a large-diameter reflector 3' and a central opening 5;
A locking cylinder 6 extends rearward from the central opening 5.

Reference numeral 7 denotes a small-diameter reflective mirror made of resin inserted into the locking tube 6 of the central opening 5, and has a chemically plated small-diameter reflective mirror surface 7'. With the opening ends of the mirrors aligned, the small diameter reflecting mirror 7' and the large diameter reflecting mirror 3' together form a paraboloid.

Furthermore, 8 is a hole for a socket made in the center of the small-diameter reflecting mirror 7, and 9 is a light bulb, and this light bulb 9 has a light emitting portion 9'
its peripheral terminal 9″ so that it is located at the focus of said paraboloid.
is screwed into the socket opening 8 and fixed.

Reference numeral 10 denotes an operating valve for moving the small-diameter reflecting mirror 7 back and forth along the center line A of the paraboloid, one end 10' of which is fixed to the small-diameter reflecting mirror 7, and the other end fixed to the through-hole of the rear case 2. An operating knob 10'' is provided outwardly protruding from 11, and by pressing this operating knob 10'', the peripheral end of the small diameter reflecting mirror 7' and the opening end of the large diameter reflecting mirror 3' are aligned. A complete paraboloid B is formed, and the light from the bulb 9 is converted into parallel rays by the paraboloid B, thereby creating a beam light that irradiates a far distance.On the other hand, if you pull this operating knob 10'', The small diameter reflector 7 retreats along the center line A, and the large diameter reflector 3'
and the small-diameter reflector 7' do not match, and therefore the light bulb 9 is out of focus on the large-diameter reflector 3'. If the light bulb 9 is turned on in this state, the light from the bulb will be diffused by the large-diameter reflector 3 and will be reflected in the near field. This is a diffused light that illuminates a wide area.

Reference numeral 11 denotes a power supply lead wire, and one end 11' is connected to the peripheral terminal 9 of the light bulb 9 through the lead wire support hole 12 of the small-diameter reflector 77.
'', and the other end 11'' is led out from the lead wire insertion hole 13 of the rear case 2.

Furthermore, 14 is a terminal plate that comes into contact with the tail terminal 9'' of the light bulb 9, and is connected to a mounting bracket 17 via a ground wire 15 and an eyelet 16.
It is grounded.

As described above, the headlight of the present invention forms a paraboloid with a large-diameter reflector fixed to the case and a small-diameter reflector inserted into the central opening of the large-diameter reflector. A socket hole is drilled in the socket hole, a light bulb is fixed in the socket hole so that its light emitting part is located at the focal point of the paraboloid, and the small diameter reflecting mirror is placed at the center of the paraboloid. Since it is constructed so that it can be moved back and forth along a line, the light bulb can be easily converted into parallel or diffused light by moving this small-diameter reflector, and therefore, it can be used to irradiate a distant area in a concentrated manner with simple operation. , or can irradiate a wide range of nearby areas,
It can be used as both a conventional boom light and a diffused light.

Furthermore, since the small-diameter reflector of the proposed small-diameter reflector also includes the center part excluding the socket opening, the light emitted from the light bulb is effectively reflected even in the vicinity of the socket of the reflector, and therefore the center part This can compensate for the lack of illumination.

[Brief explanation of the drawing]

Each of the drawings shows an embodiment of the headlamp of the present invention in a bicycle headlamp, and FIG. 1 is a sectional view when the headlamp is used as a beam light, and FIG. 2 is a sectional view when it is used as a diffuser light. 3...Large diameter reflecting mirror 5...Central aperture,
7...Resin small diameter reflector, end...hole for socket, 9...bulb.

Claims (1)

[Scope of utility model registration request] A paraboloid is formed by a large-diameter reflector fixed to the case and a small-diameter reflector inserted into the central opening of the large-diameter reflector, and an opening for a socket is bored in the center of the small-diameter reflector. A light bulb is fixed in this socket opening so that its light emitting part is located at the focal point of the paraboloid, and the small diameter reflecting mirror is movable back and forth along the center line of the paraboloid. A headlight that is characterized by: