JP2001216830A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture whose cost is suppressed. SOLUTION: A cover 15 is rotated, and its projections 15d are engaged with respective engaging portions 19A, 19B, 19C formed on a lower face 1a of the fixture body 1 to let the cover 15 fixed and retained thereto. A convex part 30a is formed on the lower face 1a near the engaging portion 19A in the circumferential direction and together, a convex part 31a projecting inward of the cover 15 is formed on a face 15b in contact with the fixture body 1 of the cover 15, and the convex part 31a goes over the convex part 30a, at completing of the engagement of each projection 15d with respective engaging portions 19A, 19B, 19C, when the cover 15 is rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device comprising a main body and a cover for covering the main body.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No.
No. 77808 was disclosed. In this conventional lighting fixture, when the cover is attached to the fixture main body, the cover is rotated so that the protrusion provided on the cover is supported by the receiving part of the fixture main body. The projecting portion comes into contact with the elastic leaf spring attached to the portion to generate a sound, so that the user can know that the cover is attached to the instrument body.

[0003]

However, in this conventional example, an elastic leaf spring, which is a separate member, is attached to the metal receiving portion of the instrument body so that the user can know that the cover is attached to the instrument body. It is necessary to attach, and the number of attachment steps and the number of parts increase, leading to an increase in cost.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lighting fixture with reduced cost.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises an apparatus main body for holding a lamp,
A light-transmitting cover that has an opening facing the appliance body and is attached to the appliance body so as to cover the lamp, and a plurality of protrusions formed on the periphery of the opening of the cover, The cover is configured to be engaged with an engaging portion integrally formed at a position corresponding to the protruding portion of the instrument body by rotation of the cover, so that the cover is fixedly held to the instrument body, and the instrument body or the cover is configured. Characterized in that at least one of them is provided with a click feeling generating means that gives a click feeling when the engagement between the protruding portion and the engaging portion is completed, without additionally attaching a new member to the instrument body, A person who attaches the cover to the device main body can know from the click feeling that the projecting portion of the cover has engaged with the engaging portion of the device main body, and cost can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the cover has a contact surface that is in contact with one surface of the appliance main body, and the click sensation generating means includes the contact surface or the appliance. A protrusion formed on one of the one surface of the main body, and a protrusion formed on the other and overcoming the protrusion when the engagement is completed by rotation of the cover, wherein the cover is attached to the appliance body. The person who attaches can surely know that the projecting portion of the cover has engaged with the engaging portion of the instrument body from the feeling when the projecting portion gets over the projecting portion.

According to a third aspect of the present invention, in the first aspect of the invention, the click sensation generating means includes a convex portion formed on one of the contact surface and the one surface of the instrument body. And a concave portion formed on the other side and fitted with the convex portion when the engagement is completed by the rotation of the cover. From the feeling, it is possible to reliably know that the projecting portion of the cover has engaged with the engaging portion of the instrument body.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the click sensation generating means includes a plurality of convex portions formed on one of the contact surface or the one surface of the instrument body, and the other. And a plurality of convex portions over which each of the convex portions rides over by rotation of the cover, and a person who attaches the cover to the instrument main body engages the projecting portion of the cover with the engaging portion of the instrument main body. It is possible to know the timing other than the timing of the engagement completion.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the protruding portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body. The distance between the protrusion and the corresponding engaging portion is different from each other, and the person attaching the cover to the instrument body is characterized by Because it is possible to know before and at the time of completion of the engagement in which the protruding portion engages with the engagement portion of the instrument body,
The engagement stage can be known.

According to a sixth aspect of the present invention, in the second aspect, the click feeling generating means includes a plurality of convex portions formed on one of the contact surface or the one surface of the instrument body, and the other. And a plurality of concave portions into which the respective convex portions are fitted by the rotation of the cover, so that a person who attaches the cover to the instrument main body engages the projecting portion of the cover with the engaging portion of the instrument main body. It becomes possible to know the timing other than the timing of the engagement completion to be combined.

According to a seventh aspect of the present invention, in the invention of the sixth aspect, the protruding portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body. The distance between each of the recesses is the same, and the distance between each of the recesses formed on the other side and the corresponding protruding portion or the engaging portion is different. Because the part can be known before the engagement is completed and when the engagement is completed, the part engages with the engagement part of the instrument body.
The engagement stage can be known.

According to an eighth aspect of the present invention, in the invention of the sixth aspect, the protruding portion or the engaging portion corresponding to each recess formed on one of the contact surface and the one surface of the instrument body. And the distance between each protrusion formed on the other side and the corresponding protrusion or the engagement portion is different, and a person who attaches the cover to the appliance main body has Because the part can be known before the engagement is completed and when the engagement is completed, the part engages with the engagement part of the instrument body.
The engagement stage can be known.

According to a ninth aspect of the present invention, in the first aspect, the engaging portion has a support surface for supporting the projecting portion when the engagement of the projecting portion is completed. In at least one of them, as the click feeling generating means,
When the engagement is completed, a convex portion over which the projecting portion climbs over is formed on the support surface, and a person who attaches the cover to the appliance main body can project the cover from the sense that the projecting portion climbs over the projecting portion. It is possible to know that the part has engaged with the engaging part of the instrument body.

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, the protrusion formed on the support surface rotates the cover to engage the protrusion with the engagement portion. The slope facing the traveling direction of the projecting portion at the time has a mountain shape that is gentler than the other slope, and the projecting portion can be engaged with the engaging portion with a light force. On the contrary, the engagement is hard to be released.

According to an eleventh aspect of the present invention, in the ninth aspect of the present invention, the convex portion formed on the support surface is spherical, and the shape of the projecting portion varies, and Even if the trajectory when engaging with the part is shifted, the protruding part can get over the convex part with a constant force, and the person who attaches the cover can surely know the completion of the engagement.

According to a twelfth aspect of the present invention, in any one of the ninth to eleventh aspects of the present invention, the support surface has a tongue piece having a hole formed around the periphery and one end of which is fixed. The protrusion is formed on the tongue piece, and the protrusion can be bent, and even if the thickness of the protrusion of the cover varies, the protrusion can get over the protrusion. The sense of time can be kept constant, and the person who attaches the cover can surely know that the engagement has been completed.

According to a thirteenth aspect of the present invention, in the invention according to any one of the ninth to twelfth aspects, the convex portions are respectively formed on a support surface of a plurality of engaging portions, and each convex portion is It is characterized in that the positional relationship with the corresponding protrusion is different, and when the protrusion engages with the engagement portion, a difference occurs in the timing at which each protrusion crosses over each protrusion, resulting in a difference in the mounting time of the cover. Can know the engagement stage.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) A lighting fixture according to the present embodiment is disposed on a disc-shaped fixture body 1 made of synthetic resin and a ceiling surface X as shown in FIGS. Hanging socket 2 consisting of hanging ceiling or hanging rosette
A mounting adapter 3 which is electrically and mechanically connected by hooking and locking a pair of hooking blades provided on the upper surface;
The plug socket 2 and the mounting adapter 3 are inserted into the window hole in the center of the mounting adapter 3 from the top opening, and the engaging projection 4 having the front end protruding on the outer peripheral portion of the mounting adapter 3 by the constant spring bias is formed on the inner periphery. The mounting adapter 3 is engaged with the engaging step of the surface.
A cylindrical storage part 5 for detachably supporting the instrument body 1,
An electronic ballast unit composed of an inverter type lighting circuit and electronic components of a circuit for controlling lighting and dimming, a pull switch 6, and two types of annular fluorescent lamps L1 and L2 of, for example, 32W and 40W that are lighted by the electronic ballast. And a printed circuit board 10 mounted on the lower surface of the appliance body 1 so as to surround the cylindrical storage portion 5 and a substantially truncated cone shape. Instrument body 1
The outer flange 12a on the periphery of the opening on the large diameter side is brought into contact with the lower surface of the appliance body 1 so as to cover the charged portion including the printed circuit board 10 disposed on the lower surface side of the appliance body 1, and is screwed down and caulked. Plate 1 made of sheet metal fixed concentrically to
2, the fluorescent lamps L1 and L2 held and mounted by the socket base 8 exposed below the opening window 13a formed in the reflector 12 and the lamp holding spring 14 mounted on the downward inclined surface of the reflector 12; A milky-white transmissive and diffusible cover (glove) 15 made of, for example, acrylic resin, which is attached to the lower surface side of the appliance body 1 so as to cover the nightlight socket 9 exposed from the opening window 13b formed in the plate 12;
A linear spring material is bent into a V shape, and an annular portion 17a for inserting the drawstring 16 connected to the operating rod of the pull switch 6 is provided at the base end of both legs. And a V-shaped lever 17 swingably attached to the end.

The apparatus main body 1 has a printed circuit board 10 on the lower surface side.
And a rib for screwing are formed, and an arc-shaped window hole 18 is formed at a place where the outward flange 12a of the reflection plate 12 is in contact with the surface to enhance the heat radiation effect.

At the center of the reflection plate 12, a round hole 20 facing the lower end opening of the cylindrical storage portion 5 attached to the instrument body 1 is opened.
Is exposed from the round hole 20, and a connector 22a at the other end of the power supply line 22 having one end connected to a circuit of the printed circuit board 10 is connected to a power supply connection portion 21 provided on the lower surface of the mounting adapter 3. It can be connected.

On the lower surface of the mounting adapter 3, the locking projection 4 is pulled into the mounting adapter 3 against the bias of a spring, and a locking step portion provided on the inner peripheral surface of the cylindrical storage portion 5. The operation lever 11 for performing an operation for detaching from the device is exposed, and the instrument body 1 can be removed from the mounting adapter 3 with the cover 15 removed.

The cover 15 is formed of a flat dome formed of, for example, an acrylic resin, and has a circular opening 15a formed in the center of the upper surface of the dome.
Projections (projections) 15d, which are flat bodies for fixing and holding the cover 15 on the lower surface of the instrument main body 1, are formed at equal intervals on the peripheral edge of 5a so as to protrude inward at three places. The contact surface 1 that contacts the lower surface 1a of the instrument body 1 when the cover 15 is fixedly held on the instrument body 1 on the upper surface of the opening 15a.
5b is provided.

On the lower surface near the peripheral end located outside the outward flange portion 12a of the instrument body 1, there are provided engaging portions 19A to 19 for engaging and attaching the projecting portions 15d of the cover 15.
9C is integrally formed at three positions at positions corresponding to the protrusions 15d.

In mounting the lighting fixture of the present embodiment on the ceiling, the printed board 10 and the tubular storage section 5 are mounted in advance, the reflecting plate 12 is mounted, and the reflecting plate 1 is mounted.
The fluorescent lamps L1 and L
2 is connected and held by a holding spring attached to the socket base 8 and a lamp holding spring 14 provided on the reflection plate 12, and the apparatus main body 1 in a state where a bead ball is attached to the nightlight socket 9 is prepared. Keep it. The mounting of the fluorescent lamps L1 and L2 and the bead ball may be performed immediately before the cover 15 is mounted.

At the time of installation, first, the hooking blade of the mounting adapter 3 is hooked and connected to the hooking ceiling 2 attached to the ceiling or the hooking outlet 2 consisting of a hooking rosette, and is attached to the lower surface side of the hooking outlet 2.

Next, the fixture main body 1 is moved in the ceiling direction while being lifted, and the mounting adapter 3 hanging down from the hooking outlet 2 is inserted through the upper end opening of the cylindrical storage portion 5 facing the window in the center of the fixture main body 1. It is inserted into the cylindrical storage part 5. As a result of this insertion, the engagement protrusion 4 protruding from the outer peripheral portion of the mounting adapter 3 is pushed by the upper inclined surface of the engaging step provided on the inner peripheral surface of the cylindrical storage portion 5 and engaged into the mounting adapter 3. By overcoming the joint portion and projecting again by the bias of the spring, it engages with the downward surface of the engaging step portion, and supports the instrument body 1 side via the tubular storage portion 5 by this engagement. In this state, the power supply connection portion 21 provided on the lower surface of the mounting adapter 3 is connected to the printed circuit board 10, and the connector 22a at the end of the power supply line 22 led out is connected.

After the attachment of the instrument body 1 is completed, the cover 15 is attached. Here, the details of the main parts of the instrument body 1 and the cover 15 will be described. First, FIG.
FIG. 1A is a plan view of the instrument body 1, and FIG.
5 shows a plan view. FIG. 1A shows a state in which the apparatus main body 1 has a reflection plate 12 and the like attached thereto, and FIGS. 1A and 1B both show a state viewed from the lower surface side.

As shown in FIG. 1A, the engaging portions 19A, 19B, 1 are arranged at equal intervals at three positions near the peripheral end of the instrument body 1.
9C is provided. FIG. 5 shows the structure of the engagement portion 19A. The engaging portions 19B and 19C have the same configuration. When the appliance body 1 is mounted on the ceiling, the upper side in FIG. 5 is located on the ground side, and the lower side is located on the ceiling side.

1 and 5, the engaging portion 19A has an opening at an outer peripheral side surface 19s (a front side in FIG. 5) and an end surface 19e facing the protruding portion 15d when the cover 15 is rotated. Inside is located on the end face 19e side,
A front chamber 19f having a height sufficiently larger than the height from the contact surface 15b to the surface opposite to the appliance body 1 of the protrusion 15d, and a height substantially communicating with the front chamber 19f and substantially equal to the thickness of the protrusion 15d. A rear chamber 19g is provided.

As shown in FIG. 1A, for example, a spherical (or hemispherical) projection (a dowel) 30a is integrally formed on the lower surface 1a of the instrument body 1 near the circumferential direction of the engaging portion 19A. As shown in FIG. 1 (b), a contact surface 15b of the cover 15 which contacts the lower surface 1a of the appliance body 1 has a protrusion protruding inward of the cover 15 at a position corresponding to the protrusion 30a. The part 31a is integrally formed.

Next, FIG. 4 schematically shows a state in which the cover 15 is attached to the instrument body 1, and FIGS.
The mounting method will be described with reference to FIG. First, the cover 15 is lifted from below, and the contact surface 15b is brought into contact with the lower surface 1a of the appliance body 1 exposed outside the peripheral end of the reflector 12, and the cover 15 is rotated in the P direction in this state. By this rotation, each protruding portion 15d of the cover 15 is
And enters the engaging portions 19A, 19B, and 19C. Describing the engagement portion 19A, the rotation of the cover 15 causes the protrusion 15d to pass through the opening of the end face 19e and the opening of the side surface 19s of the engagement portion 19A to form the front chamber 19f.
First, enter the rear chamber 19g by further rotation, hit the rear wall 19h, and at that position the rear chamber 19g
Will be engaged so as to be supported by the support surface 19k which is the bottom surface of.

The rotation of the cover 15 causes the cover 15 to rotate.
The convex portion 31a provided on the lower surface 1a contacts the convex portion 30a provided on the lower surface 1a of the instrument body 1 and gets over the convex portion 31a. Here, at the same time when the engagement between the engagement portion 19A and the protrusion 15d is completed, the protrusion 3
Each of the projections 30a and 31
The positional relationship of a is set. By doing so, the sense (click feeling) when the convex portion 31a climbs over the convex portion 30a when the engagement is completed is transmitted to the person who attached the cover 15,
The installer can know the engagement completed state from that feeling. That is, the protrusions 30a and 31a are formed by the protrusions 15d of the cover 15 and the engagement portions 19A, 19B, 1 of the instrument body 1.
Click feeling generating means for giving a click feeling when the engagement of 9C is completed.

By this engagement, the cover 15 is fixed and held on the lower surface 1a side of the appliance main body 1, and covers the reflector 12, the fluorescent lamps L1, L2, and the bead bulb attached to the lower surface side of the appliance main body 1. At this time, the contact surface 15b of the cover 15
Will contact the lower surface of the instrument body 1.

Next, another configuration example is shown in FIGS. 6 (a) and 6 (b). In FIG. 1, the protrusion 30a is formed only in the vicinity of the engagement portion 19A of the instrument main body 1, whereas in FIG. 6, the protrusions 30b, 30b, are newly formed in the vicinity of the other engagement portions 19B, 19C.
30c is integrally formed. Then, each engaging portion 19
The protrusions 30a, 30b, 30c are formed such that A1 <A2 <A3 is established between the intervals A1, A2, A3 between A, 19B, 19C and the respective protrusions 30a, 30b, 30c.

As shown in FIG. 6B, the cover 1
5 toward the inner side from the contact surface 15b.
a, 30b, and 30c at the corresponding positions.
b, 31c are integrally formed. That is, the protrusion 31
a, 31b, and 31c are formed in the vicinity of each protrusion 15d. Here, the respective intervals B1, B2, B3 between the respective projections 31a, 31b, 31c and the respective projections 15d are the same.

When the engagement between the engaging portions 19A, 19B, and 19C and the respective projecting portions 15d is completed, the convex portion 31a is moved to the engaging portion 19a.
It is set so as to get over the convex portion 30a near A.
Each projection 30a, 30b, 30c and each projection 31a,
Since the positional relationship between 31b and 31c is as described above, when the cover 15 is rotated in the P direction, each of the convex portions 31a and 31c
The order in which b and 31c go over each of the projections 30a, 30b and 30c is the order of the projections 31c, 31b and 31a. That is, the protrusions 31b and 31c climb over the protrusions 30b and 30c before the engagement is completed, and the protrusion 31a climbs over the protrusion 30a when the engagement is completed.

With this configuration, the person who attaches the cover 15 to the appliance body 1 feels the above-mentioned feeling of getting over (click feeling) in order, so that the projecting portion 15d of the cover 15 is Joints 19A, 19B,
It is possible to know the engagement stage to be engaged with 19C.

FIG. 7 shows another configuration example in which the engagement stage can be known. In this configuration example, as shown in FIG. 7A, each of the engagement portions 19A, 19B, 19
C and each interval A1, A between each convex portion 30a, 30b, 30c
2 and A3 are the same, but as shown in FIG. 7B, each protrusion 15 of the cover 15 and each protrusion 31a, 31
The intervals B1, B2, and B3 of b and 31c are B1>B2> B
There is a relationship of 3. Also in this configuration example, as in the case of FIG. 6, when the cover 15 is rotated in the P direction, the projections 30c, 30b, and 31a are arranged in the order of the projections 30c, 30b, and 31a.
Since the engagement is completed by overcoming b and 30a, the installer can know the engagement stage.

FIG. 8 shows still another configuration example. In FIG. 1, each convex portion 31 extends inward from the contact surface 15 b of the cover 15.
While a, 31b, and 31c are formed so as to protrude,
8, the protrusions (ribs) 32a, 3 protruding from the contact surface 15b toward the instrument body 1 and having a length in the radial direction of the cover 15 are provided.
2b and 32c (the same shape as the convex portion 32 in FIG. 9)
b, and are formed integrally with each other. Here, each protrusion 3
Each interval B from each projection 15d of 2a, 32b, 32c
1, B2 and B3 are the same.

On the other hand, each engagement portion 19A, 19
B, 19C, each convex part 30a, 30b,
30c is formed at a position corresponding to each of the convex portions 32a, 32b, 32c, that is, formed on the outer peripheral side of the appliance body 1 as compared with the case of FIG. Each of the projections 30
a, 30b, 30c and the respective engaging portions 19A, 19B, 19C
, A1 <A2 <A3.

Also in this configuration example, when the cover 15 is rotated in the P direction, each of the convex portions 32c, 32b, and 32a climbs over each of the convex portions 30c, 30b, and 30a in this order, and finally, the convex portion 32a becomes the convex portion 30a. When overcoming, each projection 15
d comes into engagement with each of the engaging portions 19A, 19B, and 19C, and the completion of the engagement can be known by the wearer sequentially feeling the sense that the convex portion climbs over the convex portion.

When the engagement is completed, the projections 30a, 30a of the appliance body 1 are completed so that the lower surface 1a of the appliance body 1 and the contact surface 15b of the cover 15 are in contact without any gap.
b, 30c are fitted to the contact surface 15b of the cover 15.
And the convex portions 32a, 32 of the cover 15
It is desirable to provide a recess in which the b and 32c are fitted on the lower surface 1a of the instrument body 1.

The intervals B1, B2, and B3 are set to satisfy B1>B2> B3, and the intervals A1, A2, and A3 are set.
Is set as A1 = A2 = A3, the same effect as in FIG. 8 can be obtained.

Here, still another configuration example is shown in FIG. The device main body 1 shown in FIG. 10 (a) has the same configuration as that of FIG. 8 (a), but the cover 15 has a contact surface 15b as shown in FIG. 8 (b), as shown in FIG. 10 (b). Each convex part 32
a, 32b, 32c at the position where the device main body 1 is formed.
Concave portion 3 into which each of the above convex portions 30a, 30b, 30c fits.
3a, 33b and 33c are formed. In this configuration example, when the cover 15 is rotated in the P direction,
c, 33b, and 33a in this order.
b and 30a are fitted to each other, and finally, the protrusion 3
0a is fitted, each projection 15d is
A, 19B, and 19C are engaged with each other, so that the installer can know the engagement stage as if the convex portion fits into the concave portion, and can know the completion of the engagement.

When the engagement is completed, the projections 30a and 30a of the instrument body 1 are completed so that the lower surface 1a of the instrument body 1 and the contact surface 15b of the cover 15 contact each other without any gap.
b, 30c are fitted into the recesses 33a, 33
It is desirable to provide it on the contact surface 15b of the cover 15 separately from b and 33c.

The intervals B1, B2 and B3 are set to B1
>B2> B3, and set each interval A1, A2, A3 to A
Even when 1 = A2 = A3 is set, the same effect as in the case of FIG. 10 can be obtained.

Next, another example of the structure of the engaging portions 19A, 19B and 19C will be described. FIG. 11 is a perspective view showing another structure of the engaging portion. The point that the upper side in the figure is located on the ground side and the lower side is located on the ceiling side is the same as FIG. 5. The engaging portion 39 of FIG.
5 is different from the engaging portion 19A shown in FIG. 5 in that a convex portion 40 is formed so as to protrude in the direction of the protruding portion 15d on a support surface 19k supporting the protruding portion 15d of the cover 15. This convex portion 40 has a length in the radial direction of the instrument body 1,
As shown in FIG. 12, the cross-sectional shape of the open side surface is a mountain shape (triangular rib). Then, the protrusion 15 when the protrusion 15 d of the cover 15 is engaged with the engagement portion 39.
The slope 40a facing the traveling direction Q of d is gentler than the other slope 40b.

The projecting portion 15 of the cover 15 is
The operation when d is engaged will be described. First, when the cover 15 is rotated, the projecting portion 15d of the cover 15 enters in the Q direction from the end surface 19e of the engaging portion 39, and the front chamber 19
f, and then into the rear chamber 19g by further rotation.

The projection 15d is formed on the slope 4 of the projection 40.
0a, goes along the slope 40a, descends along the opposite slope 40b beyond the peak of the chevron, and the plane of the projection 15d is placed on the support surface 19k and supported by the engagement portion 39. You. At this time, the protrusion 15d engages between the rear wall 19h of the rear chamber 19g and the protrusion 40. That is, when the engagement between the projection 15d and the engagement portion 39 is completed, the projection 15d gets over the projection 40 of the engagement portion 39.

Thus, the person who attaches the cover 15 to the appliance main body 1 knows the completion of the engagement between the projection 15d and the engagement portion 39 based on a feeling (click feeling) when the projection 15d passes over the projection 40. be able to. That is, the protrusion 4
0 corresponds to a click feeling generating means. Also, the protrusion 15
Since the slope 40a facing the traveling direction Q of d is gentler than the other slope 40b, the protrusion 15d can be engaged with the engagement portion 39 with a light force, and the engagement is unlikely to be disengaged. Become.

Next, still another configuration example of the engaging portion is shown in FIG. 13 differs from FIG. 11 in that the support surface 19k of the engaging portion 39 is provided with a tongue piece 43 having three peripheral sides formed with holes 41 and having one end 42 fixed thereto. The point is that the protrusion 40 is formed at the other end of the tongue piece 43.

With this configuration, the convex portion 40 can bend in the direction perpendicular to the support surface 19k, and the cover 1
5, even when the thickness of the protrusion 15d varies, the feeling when the protrusion 15d gets over the protrusion 40 can be made constant, and the person who attaches the cover 15 can use the protrusion 15d.
Can be surely confirmed to be engaged with the engaging portion 39.

In FIGS. 11 and 13, the convex portion 40 has a length in the radial direction of the instrument body 1 and has a chevron-shaped cross section, but may have a spherical or hemispherical shape. By doing so, even if the shape of the projecting portion 15d varies and the trajectory when engaging with the engaging portion 39 may shift,
d can get over the convex portion 40 with a constant force, and the completion of the engagement can be reliably known.

FIG. 14 shows an example in which the above-mentioned convex portion is formed on each engaging portion of the instrument body 1. As shown in FIG. 14B, three protrusions 15d are formed on the cover 15 at equal intervals.
On the other hand, as shown in FIG.
9B and 39C are also formed at three places at equal intervals on the appliance main body 1, but the protrusions 40a, 40b and 40c formed at the respective engaging portions 39A, 39B and 39C are not formed at equal intervals. The distance between each of the protrusions 40c, 40b, 40a and the back wall 19h is formed at a position where 40c <40b <40a.

That is, each of the projections 40a, 40b, 40c
The positional relationship with respect to the corresponding projection 15d is different. If the rotation direction of the cover 15 is the P direction, each projection 15d gets over in the order of the projections 40a, 40b, and 40c. At this time, the corresponding protrusion 15d
Each of the protrusions 15d is completely engaged with each of the engagement portions 39A, 39B, and 39C when the vehicle gets over the protrusion 40c. By doing so, the person who attaches the cover 15 can know the engagement stage.

[0056]

As described above, according to the first aspect of the present invention, there is provided an apparatus main body for holding a lamp, and a light-transmitting apparatus which has an opening facing the apparatus main body and is attached to the apparatus main body so as to cover the lamp. A plurality of protruding portions formed on the periphery of the opening portion of the cover are engaged with an engaging portion integrally formed at a position corresponding to the protruding portion of the instrument body by rotation of the cover. In combination, the cover is configured to be fixedly held to the device main body, and at least one of the device main body and the cover gives a click feeling when the engagement between the projecting portion and the engaging portion is completed. Because of the provision of the generating means, a person who attaches the cover to the instrument body without adding a new member to the instrument body can confirm from the click feeling that the projecting portion of the cover has engaged with the engaging portion of the instrument body. Rukoto can, it is possible to suppress the cost.

According to a second aspect of the present invention, in the first aspect of the present invention, the cover has a contact surface in contact with one surface of the appliance body, and the click sensation generating means includes the contact surface or the appliance. Since there is a convex portion formed on one of the one surface of the main body and a convex portion formed on the other side and over the convex portion when the engagement is completed by rotation of the cover, a person attaching the cover to the appliance main body, It is possible to reliably know that the projecting portion of the cover has engaged with the engaging portion of the instrument body from the feeling when the projecting portion gets over the projecting portion.

According to a third aspect of the present invention, in the first aspect of the present invention, the click sensation generating means includes a convex portion formed on one of the contact surface or the one surface of the instrument body. Since the cover is formed on the other side and has a concave portion into which the convex portion is fitted when the engagement is completed by the rotation of the cover, a person who attaches the cover to the instrument main body can feel the cover when the convex portion fits into the concave portion. It can be surely known that the projecting portion of the device has been engaged with the engaging portion of the instrument body.

According to a fourth aspect of the present invention, in the second aspect, the click sensation generating means includes a plurality of convex portions formed on one of the contact surface or the one surface of the instrument main body, and the other. And a plurality of projections over which each of the projections rides over by rotation of the cover, so that a person who attaches the cover to the appliance main body can complete the engagement in which the protrusions of the cover engage with the engagement portions of the appliance main body. It is possible to know the timings other than the timing of (1).

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the protruding portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body. Since the distance between the protrusions and the engaging portions is different from each other, the person attaching the cover to the device main body requires the protrusion of the cover to be the device. Since it is possible to know before and when the engagement with the engagement portion of the main body is completed, it is possible to know the engagement stage.

According to a sixth aspect of the present invention, in the second aspect of the present invention, the click sensation generating means includes a plurality of convex portions formed on one of the contact surface or the one surface of the device main body, and the other. And a plurality of concave portions into which the respective convex portions are fitted by the rotation of the cover, so that a person who attaches the cover to the instrument main body can engage with the projecting portion of the cover engaging with the engaging portion of the instrument main body. It becomes possible to know the timing other than the completion timing.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the protruding portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body. Since the distance between the protrusion and the engaging portion is different from that of the other concave portion formed on the other side, the person who attaches the cover to the appliance main body has the projecting portion of the cover, Since it is possible to know before the completion of engagement and when the engagement is completed, the engagement stage can be known.

According to an eighth aspect of the present invention, in the invention of the sixth aspect, the protruding portion or the engaging portion corresponding to each recess formed on one of the contact surface or the one surface of the instrument body. Are different from each other, and the distance between each of the projections formed on the other side and the corresponding protruding portion or the engaging portion is different. Since it is possible to know before the completion of engagement and when the engagement is completed, the engagement stage can be known.

According to a ninth aspect of the present invention, in the first aspect, the engaging portion has a support surface for supporting the projecting portion when the engagement of the projecting portion is completed. In at least one of them, as the click feeling generating means,
When the engagement is completed, the projecting portion over which the projecting portion rides over is formed on the support surface, so that a person who attaches the cover to the instrument body feels that the projecting portion of the cover is over the instrument body, It can be known that the engaging portion has been engaged.

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, the protrusion formed on the support surface rotates the cover to engage the protrusion with the engagement portion. Since the slope facing the traveling direction of the protrusion at the time has a mountain shape that is gentler than the other slope, the protrusion can be engaged with the engagement portion with a light force,
Conversely, the engagement is less likely to come off.

According to an eleventh aspect of the present invention, in the ninth aspect of the present invention, since the convex portion formed on the support surface is spherical, the shape of the projecting portion varies and the engaging portion engages with the engaging portion. Even if the trajectory is shifted, the protruding portion can get over the protruding portion with a certain force, and the person who attaches the cover can surely know that the engagement is completed.

According to a twelfth aspect of the present invention, in any one of the ninth to eleventh aspects of the present invention, the supporting surface has a tongue piece having a hole formed around the periphery and one end of which is fixed. However, since the convex portion is formed on the tongue piece, the convex portion can be bent, and even when the thickness of the projecting portion of the cover varies, the feeling when the projecting portion gets over the projecting portion is constant. And the person who attaches the cover can surely know that the engagement has been completed.

According to a thirteenth aspect of the present invention, in the invention according to any one of the ninth to twelfth aspects, the convex portions are formed on the support surfaces of the plurality of engaging portions, respectively. Since the positional relationship with the corresponding projection is different, there is a difference in the timing at which each projection climbs over each projection when the projection is engaged with the engagement portion, and the person who attaches the cover needs to be in the engagement stage. You can know.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure of each part of a lighting apparatus according to an embodiment of the present invention, wherein (a) and (b) are plan views.

FIG. 2 is an exploded perspective view showing the structure of the above lighting fixture.

FIG. 3 is an exploded perspective view showing a state where the lighting fixture is attached.

FIG. 4 is a perspective view showing a state where the cover of the lighting fixture is attached.

FIG. 5 is a perspective view showing a structure of an engaging portion of the lighting device.

FIG. 6 is a view showing a structure in which a plurality of convex portions are formed in the lighting device of the above, and (a) and (b) are plan views.

FIG. 7 is a diagram showing another structure of the lighting fixture in which a plurality of projections are formed, wherein (a) and (b) are plan views.

FIG. 8 is a diagram showing still another structure in the case where a plurality of convex portions are formed in the lighting device of the above, and both (a) and (b) are plan views.

FIG. 9 is a perspective view showing another structure of the cover of the lighting fixture.

FIG. 10 is a view showing still another structure of the lighting device of the above, when a plurality of convex portions are formed, and FIG.
(B) is a plan view.

FIG. 11 is a perspective view showing a structure of another engaging portion in the lighting device of the above.

FIG. 12 is a side view showing a structure of a main part of another engaging portion in the lighting device of the above.

FIG. 13 is a perspective view showing a structure of still another engaging portion in the lighting device of the above.

FIG. 14 is a diagram showing a structure of each part when a projection is provided in an engagement part of the lighting device, and FIGS. 14 (a) and (b) are plan views.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 1a Lower surface 12 Reflector 15 Cover 15b Contact surface 15d Projection 19A, 19B, 19C Engagement 30a Projection 31a Projection

Claims (13)

[Claims] 1. An appliance main body for holding a lamp, and a light-transmitting cover having an opening facing the appliance main body and attached to the appliance main body so as to cover the lamp,
A plurality of protrusions formed on the periphery of the opening of the cover engage with an engagement portion integrally formed at a position corresponding to the protrusion of the instrument body by rotation of the cover, and the cover is rotated. It is configured to be fixedly held to the instrument body, at least one of the instrument body or the cover,
A lighting device, further comprising a click feeling generating means for giving a click feeling when the engagement between the projecting portion and the engaging portion is completed. 2. The apparatus according to claim 1, wherein the cover has a contact surface that is in contact with one surface of the device main body, and the click sensation generating means includes a convex portion formed on one of the contact surface or the one surface of the device main body; 2. The lighting device according to claim 1, further comprising: a projection formed on the other side and overcoming the projection when the engagement is completed by rotation of the cover. 3. The click sensation generating means includes a convex portion formed on one of the contact surface or the one surface of the instrument body, and the convex portion formed on the other when rotation of the cover completes the engagement. The lighting fixture according to claim 1, further comprising: a recess in which the fitting is fitted. 4. The click sensation generating means includes a plurality of convex portions formed on one of the contact surface or the one surface of the instrument body, and a plurality of convex portions formed on the other and over which each of the convex portions crosses by rotation of the cover. The lighting device according to claim 2, wherein the lighting device has: 5. A space between each of the projections formed on one of the contact surface and the one surface of the instrument body and the corresponding projection or the engagement portion, and each of the projections formed on the other surface is formed on the other. The lighting device according to claim 4, wherein a distance between the protrusion and the corresponding protrusion or the engagement portion is different. 6. The click sensation generating means includes a plurality of convex portions formed on one of the contact surface and the one surface of the instrument main body, and the respective convex portions formed on the other by rotation of the cover. 3. The lighting apparatus according to claim 2, comprising a plurality of recesses. 7. The spacing between each of the protrusions formed on one of the contact surface and the one surface of the instrument body and the corresponding protrusion or the engagement portion, and each of the protrusions formed on the other surface is the same. 7. The lighting apparatus according to claim 6, wherein an interval between the concave portion and the corresponding protruding portion or the engaging portion is different. 8. The space between each of the recesses formed on one of the contact surface and the one surface of the instrument body and the corresponding protrusion or the engagement portion, and each protrusion formed on the other. 7. The lighting apparatus according to claim 6, wherein an interval between the protrusion and the corresponding protrusion or the corresponding engagement portion is different. 9. The engagement portion has a support surface for supporting the projection when the engagement of the projection is completed, and at least one of the engagement portions includes
The lighting device according to claim 1, wherein a convex portion over which the projecting portion rides when the engagement is completed is formed on the support surface. 10. The projecting portion formed on the support surface has a slope facing the traveling direction of the projecting portion when the cover is rotated to engage the projecting portion with the engaging portion. The lighting fixture according to claim 9, wherein the lighting fixture has a mountain shape that is gentler than the other slope. 11. The lighting device according to claim 9, wherein the convex portion formed on the support surface is spherical. 12. The supporting surface according to claim 9, wherein the support surface has a tongue piece having a hole formed around the circumference and one end of which is fixed, and the projection is formed on the tongue piece. Item 11
The lighting fixture according to any one of the above. 13. The projection according to claim 9, wherein each of the projections is formed on a support surface of the plurality of engagement portions, and each projection has a different positional relationship with a corresponding projection.
The lighting fixture according to any one of claims 1 to 12.