JPH10283801A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire of such a structure as put on by pushing its lens part intermittently, wherein the electric bulb is prevented from lighting up undeliberately while it is out of service. SOLUTION: On the front face of a body 31, a lens part 37 is installed in such a way as movable in the directions to the front and rear of the body 31. The body 31 is equipped with an electric bulb 33 and a push-button type switch 4 to be actuated when the lens part 37 is moved toward the rear. The lens part 37 is arranged rotatably in the circumferential direction. The body 31 and lens part 37 are equipped with a movement hindering means to hinder the lens part 37 from moving toward the rear in case it is placed in the specified position about the circumferential direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a lighting fixture.

[0002]

2. Description of the Related Art Conventionally, in a lighting device for a room or a cap light attached to a helmet, a lighting unit and a switch operating end are separately provided and separated from each other, and the switch operating end is small and a finger. It is common to tilt or rotate in one direction to flash the bulb.

However, in such a system in which the switch operating end is tilted in one direction with a finger or rotated to blink the light bulb, it is difficult to operate the switch operating end in the darkness in a light-off state. It must be done by hand and lighting is difficult. In particular, it may not be possible to turn on the light urgently in the dark.

[0004] In addition, in the case of a cap light attached to a construction or fishing helmet, the gloves are usually used for the work, so that it is difficult to operate the small switch operation end with the gloves on. It is.

Accordingly, the present applicant has previously proposed in Japanese Utility Model Publication No. 3028759 a lighting fixture which can be easily turned on and off by simply pressing the lens for illumination with a finger or palm.

An outline of this lighting fixture will be described with reference to FIGS. A light bulb 2, a dry cell 3, and a push button switch 4 are provided in the main body 1, and the light bulb 2 blinks when the push button switch 4 is turned on and off.

The push-button switch 4 has a structure as shown in FIG. The push button type switch is a switch that switches on and off when the operating end is intermittently pressed,
A so-called push-button switch (hereinafter simply referred to as a switch) is used. The switch 4 may be of various structures conventionally available on the market. For example, a switch having a structure as shown in FIG. 9 may be used.

The switch 4 shown in FIG. 9 has an operating member 6 provided in a case 5 so as to be vertically movable, and the operating member 6 is constantly urged upward by a spring 7. A concave portion 8 is formed on the side surface of the operation member 6, and a V-shaped guide protrusion 9 protruding toward the front side of the paper surface is formed at a substantially central portion of the concave portion 8. Further, the operation member 6 has the first
The guide wall surface 10, the second guide wall surface 11, and the third guide wall surface 12 are respectively formed at the positions shown in FIG.

Numeral 13 denotes a locking line made of a metal wire. In FIG. 9, the upper end 13a and the lower end 13b are bent to the back side of the sheet of FIG.
b is rotatably held by the case 5 so that the upper end 13a side is swingable in the left-right direction.

Reference numerals 14a and 14b denote terminals provided on the case 5 side. When the operation member 6 is held in a lowered state as shown in FIG. 9, both terminals are connected and turned on. When it is moved upward from the position, it is turned off.

When the operating end 6a of the operating member 6 is pushed downward in the ON state of FIG. 9, the V-shaped guide projection 9 is lowered, and at the same time, the second guide wall 11 is lowered. At 11, the upper end 13a of the locking line 13 is pushed rightward in FIG. In this state, when the pressing force on the operation member 6 is released, the operation member 6 is moved upward by the urging force of the spring 7, and the upper end 13 a of the locking line 13 is moved.
Passes through the right side of the guide projection 9, hits the third guide wall 12, and is further guided to the lowest part of the third guide wall 12. In this state, the step 6b of the operation member 6 is
a, the ascending state is maintained and the state is turned off.

Next, when the operating end 6a of the operating member 6 is pushed downward again, the upper end 13a of the locking line 13 is guided to the lower surface of the left piece of the guide projection 9 and moves to the left. It passes through the left side and hits the first guide wall 10, and the first guide wall 1
By 0, it is moved to the upper part of the left piece of the V-shaped guide projection 9. When the pressing force on the operating member 6 is released, the operating member 6 is moved upward by the urging force of the spring 7, and the upper end 13a hits the left side of the guide projection 9 and is guided to the V-shaped lowest portion. Is done. By locking the upper end 13a of the locking line 13 to the guide projection 9, the lowered state of the operation member 6 is maintained, and the ON state is maintained.

Then, by pressing the operating end 6a again, the operating state is turned off as described above. As described above, by intermittently pressing the operation end 6a, the switch 4 is repeatedly turned on and off.

A cover 16 is provided on the front side of the main body 1, and a circular window 17 is formed on the cover 16 in front of the light bulb 2. A lens portion 18 is fitted in the circular window 17.

The lens section 18 is formed in a circular dome shape having a large area so that a relatively wide range can be illuminated, and the base diameter thereof is formed to be equal to the diameter of the circular window 17. A locking flange 19 is integrally formed on the outer periphery of the base. Further, the lens portion 18 is formed of a translucent material such as a synthetic resin or a transparent material, and if necessary, is colored. Light from the light bulb 2 is transmitted through the lens portion 18 and emitted outside. I have. Then, the lens portion 18 is fitted from the back side of the lid 16, and its locking flange 19 is
6 is locked to the back surface. Reference numeral 20 denotes a coil spring that is compressed and interposed between the peripheral back surface of the lens portion 18 and the main body 1.

On the back surface of the lens portion 18, a pin 18a is provided so as to face the operation end 6a of the switch 4. With the above configuration, when the lens unit 18 is intermittently pushed from the outside, the pin 18a intermittently pushes the operating end 6a of the switch 4, and the light bulb is turned on and off alternately.

[0017]

In the above structure, since the lens portion 18 is always provided so as to be able to be pressed and moved, other objects and hands are carelessly inadvertently transported when not in use. There is a risk that the lens portion 18 will be pushed and lighted when touched, and there is a problem that the battery will be consumed if left unattended for a long time without knowing the lighting state.

Accordingly, the present invention solves the above-mentioned problem by enabling the lens unit to be pressed and moved only when the blinking operation is desired, and by immobilizing the lens unit so that the lens unit is not accidentally pressed and moved when not in use. It is intended for.

[0019]

According to a first aspect of the present invention, a lens unit is provided on a front side of a main body so as to be movable in front and back directions of the main body.
On the main body side, there is provided a push button type switch which is operated by moving the light bulb and the lens unit in the backward direction, so that the light bulb blinks by turning on and off the push button type switch, and the lens unit is arranged in the circumferential direction. To be rotatable,
Further, the main body and the lens portion are provided with a movement preventing means for preventing the lens portion from moving backward when the lens portion is at a predetermined position in the circumferential direction.

In the present invention, when the lens portion is intermittently pressed from the outside at a position having no movement preventing means, the lens portion is intermittently moved to the back side, and the push-button switch is turned on and off, and the light bulb is turned on. Flashes. Then, when the lens unit is rotated to a predetermined position in the light-on or light-off state, the movement preventing means prevents the lens unit from moving backward, and the light-on or light-off state is secured.

According to a second aspect of the present invention, the movement preventing means according to the first aspect of the present invention has an engaging projection protruding forward on the main body side and is engaged with the engaging projection on the lens portion side. The engaging wall is formed in the circumferential direction, and a part of the engaging wall in the circumferential direction is formed by a notched concave portion.

In the present invention, by positioning the concave portion formed in the lens portion in front of the engaging protrusion formed on the main body side, the lens portion can be moved to the rear side, and the engaging wall portion other than the concave portion is engaged. If it is located on the front side of the collision part, the movement of the lens part in the back side direction is prevented.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described based on an embodiment shown in FIGS. The main body 31 is formed of an opaque resin, and its front surface is opened by a circular peripheral wall 32. A light bulb 33 is provided in the main body 31 at the center of the opening. Further, a dry battery 34 is built in a lower portion of the main body 1.

Further, a push button type switch 4 is provided in the main body 31 at a position above the light bulb 33.
The push-button switch 4 has the same structure as the push-button switch 4 shown in FIG. 9, but the push-button switch 4 is not limited to the structure of FIG. Any switch that switches on and off when intermittently pressed may be used, and various commercially available switches having conventional structures may be used. The operation end 6a of the switch 4 is disposed toward the front (opening side) of the main body 31, as shown in FIG.

Then, the dry battery 3 is switched via the switch 4.
4 and the light bulb 33 are wired, and the light bulb 33 blinks when the switch 4 is turned on / off. Also,
A coil spring S is provided on the main body 31 side on the outer periphery of the light bulb 33.

An external thread 35 is engraved on the outer periphery of the peripheral wall 32 of the main body 31 in the circumferential direction, and an engaging projection 36 having a short shape in the peripheral direction is integrally formed on the front end face of the peripheral wall 32. . Further, projections 36a similar to the engagement projections 36 are formed 180 ° apart in the circumferential direction.

A dome-shaped lens portion 37 made of a transparent or translucent resin is rotatably fitted to the front portion of the peripheral wall 32. The outer peripheral wall of the lens portion 37 has a cylindrical fitting wall 38 which is loosely fitted on the inner peripheral surface of the peripheral wall 32 on the rear side thereof, and the engagement protrusion 38 on the outer peripheral portion in front of the fitting wall 38. An engagement wall 39 slidingly in contact with the front end surface of 36 forms a shape having a step on the outer surface. The engagement wall 39 and the engagement protrusion 36 form a movement preventing unit for the lens unit 37.

In the circumferential direction of the engaging wall 39, a recess 40 formed by cutting out the engaging wall 39 is formed. The circumferential length of the concave portion 40, that is, both end step portions 4 of the concave portion 40
The angle θ between 0a and 40b (see FIG. 5) is set as desired, but is set to about 100 ° in the illustrated embodiment. The two step portions 40a and 40b are formed on a tapered surface whose rear portion is enlarged.

A substantially hemispherical reflecting plate 41 is fixed to the rear side of the lens portion 37, and the bulb insertion hole 4 is provided at the bottom thereof.
2, and an operation unit 43 is integrally formed on the back surface over the entire circumference.

Then, the fitting wall 38 of the lens 37 is fitted inside the peripheral wall 32 of the main body 31 to set the lens portion 37 on the main body 31. As a result, the light bulb 33 is
Located within. In this fitted state, the engagement wall 3
9, when the rear end surface 39a is in contact with the front end surface of the engagement projection 36, the operation end 43 is located at a position where it does not come into contact with the operation end 6a of the switch 44.
When the recess 7 is rotated to position the recess 40 in front of the engagement projection 36 as shown in FIG. 6B, the engagement projection 36 can enter the recess 40, and in this state, When the lens part 37 is pushed at the part where the concave part 40 is located,
The lens unit 37 can move until the operation unit 43 hits the operation end 6a of the switch 4. That is, as shown in FIG. 6 (b), the axial length L ₁ of the concave portion 40 is formed longer than the gap L ₂ between the operation unit 43 and the operating end 6a of the switch 4.

A rotation ring 44 is fitted around the outer periphery of the lens portion 37. Further, a locking groove 45 is formed in a part of the engagement wall 39 of the lens portion 37 in the axial direction,
A locking ridge 46 protruding from the inside of the rotation ring 44 is fitted into this, and the rotation ring 44 and the lens portion 37 are fitted.
Are designed to rotate integrally.

On the inner peripheral surface of the rotation ring 44, a female screw 47 screwed with the male screw 35 on the main body 31 is engraved in the circumferential direction. Then, the rotating ring 44 is attached to the main body 3.
By screwing and fastening to the peripheral wall 32 of the first unit 32, the lens unit 37 is pushed by the front locking unit 44a, and the lens unit 37 is attached to the main body 31 as shown in FIG. Further, by this attachment, the coil spring S is pressed against the reflection plate 41, and the coil spring S
Accordingly, the reflection plate 41 and the lens unit 37 are urged outward.

The operation in the state assembled as described above will be described. First, a state in which the rotation ring 44 holding the lens portion 37 is slightly screwed into the peripheral wall 32 of the main body 31 is as shown in FIG. In this state, the concave portion 40 of the lens portion 37 is not located on the front surface of the engagement protrusion 36. Therefore, although it rear end surface 39a and the pressing backward in the clearance D ₁ minute hand the lens portion 37 with a slight clearance D ₁ is produced in the front end face of the engagement projection 36 of the engaging walls 39 in the lens unit 37, an operation unit 43 and operation end 6 of switch 4
Since the gap D ₂ between a is larger than the above D _1, the lens unit 3
Even if 7 is pressed, the switch 4 is not operated.

Next, when the rotating ring 44 is further rotated in the tightening direction A shown in FIG. 3, the lens portion 37 rotates together, and one end 40a of the concave portion 40 formed in the lens portion 37
Reach 6. Until the one end 40a reaches the engagement protrusion 36, the rear end face 39 is pressed when the lens portion 37 is pressed.
The switch 4 is not operated because a contacts the engagement protrusion 36.

Next, the rotation ring 44 is further tightened in the tightening direction A.
The concave portion 40 of the lens portion 37
And the state shown in FIG. 6B. When the lens portion 37 is pressed in this state, the engagement protrusion 36 enters the concave portion 40, the portion of the lens 37 where the concave portion 40 is located moves to the left in FIG. 4 is pressed. Therefore, in this state, the lens unit 3
By intermittently pressing 7, the light bulb 33 can be turned on and off intermittently. The range in which such lighting and extinguishing operations can be performed is the range of the θ angle in which the concave portion 40 is formed as shown in FIG.

Next, when the rotating ring 44 is tightened to near complete tightening, the other end 40b of the concave portion 40 rides over the engaging protrusion 36, and the engaging protrusion 36 engages as shown in FIG. Engagement with the rear end surface 39a of the wall 39 makes the pressing operation of the lens portion 37 impossible. Further, even if the rotation ring 44 is completely tightened, the state shown in FIG.

Therefore, the concave portion 40 and the engaging protrusion 36
By pressing the lens portion 37 to turn on the light in the range where the is matched (the state of FIG. 6 (b)), turning off the light by pressing the lens portion 37 after use, and completely tightening the rotating ring 44. , The lighting off state can be secured.

Also, as shown in FIG. 2, the main body 31 is turned on so that the range in which the above-mentioned lighting and extinguishing can be performed can be visually confirmed.
On the outer surface of the peripheral wall 32, two fixed indices 50 and 51 are provided.
A rotation index 52 is provided on the outer surface of the rotating ring 44 at a distance substantially equal to the angle θ at which the recess 40 is formed.
Is located between the fixed indices 50 and 51, the engaging projection 36 is located in the concave portion 40.

Further, at the time when the rotation index 52 passes the first fixed index 50 and at the time when the rotation index 52 passes the fixed index 51, the circumference of the rotating ring 44 is temporarily hardened, and In order to inform the user of the range in which the lights can be turned on and off, the small projections 53 that hit each other at the respective passing points are formed on the outer surface of the peripheral wall 32, and the other small projections 54 are formed on the inner surface of the rotating ring 44. ing.

The above embodiment is an example in which the present invention is applied to a headlight. A band mounting frame 55 is provided at the rear of the main body 31, and a band 56 which can be wound around the user's head is provided on the band mounting frame 55. ing.

The present invention is not limited to such headlights, but can be applied to other lighting equipment in general, and a commercial power supply or a battery may be used as a power supply.

[0042]

As described above, claims 1 and 2
According to the invention described above, after turning off the light by pressing the lens unit after use, the lens unit is rotated to a predetermined position, so that the light-off state can be ensured. However, it is possible to prevent the light of the dry battery or the like from being consumed by careless lighting.

[Brief description of the drawings]

FIG. 1 is a perspective view of an entire lighting apparatus showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an exploded perspective view of the components.

FIG. 4 is a side sectional view of the same.

FIG. 5 is a rear view of the lens unit including the reflection plate.

FIGS. 6A and 6C are explanatory views of the operation of the lens unit, wherein FIG. 6A and FIG.

FIG. 7 is a perspective view of a conventional structure.

FIG. 8 is a side sectional view of a conventional structure.

FIG. 9 is a longitudinal sectional view of a push-button switch.

[Explanation of symbols]

 4. Push-button switch 31. Main body 33. Light bulb 37. Lens part 36. Engagement projection 39. Engagement wall 40.

Claims (2)

[Claims] A lens unit is provided on the front side of the main body so as to be movable in the front and back direction of the main body, and a push button type switch is provided on the main body side which is operated by moving the light bulb and the lens unit in the rear direction. By turning on and off the button type switch, the light bulb is made to blink, and the lens unit is provided so as to be rotatable in the circumferential direction.
A lighting device, comprising: a movement preventing means for preventing a rearward movement of a lens portion when the lens portion is located at a predetermined position in a circumferential direction. 2. The movement preventing means is provided with an engaging projection projecting forward on the main body side, and an engaging wall engaging with the engaging projection is formed on the lens portion side in a circumferential direction. 2. The lighting apparatus according to claim 1, wherein the wall is formed by a notch in a part of the wall in a circumferential direction.