JPS63274002A - Lighting appliance for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The vehicle lamp of the present invention will be explained according to the following items.

A. Industrial field of application B1 Summary of the invention C0 Prior art 1 Problems to be solved by the invention E1 Means for solving the problems F. Embodiments [Figures 1 to 6] a. Lamp body [Figures 1 to 4] b, Pipe [Figures 1 to 6 C, Lens [Figures 1 to 3] d, Light bulb [Figures 1 to 3, e, Action of the pipe] f, Modification of lamp body [Figs. 7 to 9] f-1, First modification [Fig. 7 f-2, Second modification [Figs. 8 and 9] g, Modifications of the pipe [Figs. 10 to 12] g-1, First modification [Fig. 10] g-2, Second modification [Figs. 11 and 12] G1 Effects of the invention ( A. Field of Industrial Use) The present invention relates to a novel vehicular lamp. Specifically, we would like to provide a new vehicle lamp that is suitable for use as front lighting for automobiles and that is capable of quickly removing fogging when the lens or reflective surface becomes cloudy during the initial lighting stage. That is.

(B. Summary of the Invention) The vehicular lamp of the present invention has two projecting vibrators that communicate with the lamp space defined by the lamp body and the bell.
By positioning the tip of one of the vibrators below the lower surface of the lamp body and forming a beveled shape, and by directing the beveled surface substantially rearward, when the vehicle starts running,
Negative pressure is generated at the tip of one of the vibrators, forcing the air in the lamp space to the outside, and new air then enters the lamp space through the other vibrator. The air in the space is forced to flow, and as a result, fogging that occurs on the inner surface of the lens and reflective surface due to the sudden temperature change in the initial stage of lighting is immediately removed, and the two vibrators mentioned above also move into the dummy section of the lamp body. By protruding from the lamp, the installation of the vibrator does not substantially narrow the reflective area or the opening in the lamp space of the vibrator becomes noticeable and deteriorates the appearance. be.

(C, Prior Art) In vehicle lamps, especially automobile headlamps, there is a large temperature difference between when they are not lit and when they are lit. Therefore, when the lamp is turned on, the lens and reflective surface become cloudy due to the small amount of moisture present in the lamp space.

When the lens or reflective surface becomes cloudy, the transmittance of the luminous flux decreases, resulting in the inconvenience that a predetermined light distribution cannot be obtained and a sufficient field of view cannot be obtained.

By the way, the above-mentioned fogging is caused by the presence of moisture in the lamp space, so the lamp is of a sealed type to prevent moisture from entering the lamp space, thereby preventing fogging on the lens and reflective surface. Automotive headlights have been proposed in the past.

(D. Problem that the invention seeks to solve) However,
No matter how high the airtightness is, it is extremely difficult to completely prevent moisture from entering the lighting space! Therefore, instead of preventing moisture from entering the lamp space, the lamp space is communicated with the outside so that outside air can pass through the lamp space, and the convection of air inside the lamp space that occurs when the lamp is lit is used. A so-called vent type automobile lamp has also been proposed in which an attempt has been made to remove fog by allowing outside air to pass through the lamp space.

However, conventional vent-type vehicle headlamps have a problem in that the air flow within the lamp space is not very active, and fogging cannot be removed quickly. In addition, in the case of a vehicle lamp that employs a lamp body with an integrated reflector that is equipped with a reflector that reflects light forward that is not directly emitted from the bulb, the opening in the lamp space of the vibrator will reflect the light from the reflector. There are problems such as the amount of reflected light is reduced by substantially reducing the number of surfaces, and the opening in the lamp space of the vibrator is visible through the lens from the front, resulting in poor appearance. In particular, the opening in the vibrator's lighting space not only becomes an ineffective part that does not reflect light, but also distorts the shape of the surrounding reflective surface, so the area that does not reflect as expected is surprisingly large. The problem of becoming a thing arises.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the vehicle lamp of the present invention has the following features:
Then, two vibrators that communicate with the lamp space defined by the lamp body and the lens protrude from the dummy part of the lamp body, and the tip of one of the vibrators is placed below the bottom surface of the lamp body. 7, and the beveled surface is oriented substantially rearward.

Therefore, in the case of an unlit vehicle lamp, when the vehicle starts running, a negative pressure is generated at the tip of one of the vibrators, and the air inside the lamp space is forcibly discharged to the outside through the one vibrator. Along with this, new air flows into the lamp space through the other vibrator, and the air in the lamp space is forced to flow, and for this reason, the sudden temperature change at the beginning of lighting causes the inner surface of the lens to Even if fogging occurs on the mirror or reflective surface, such fogging will be removed immediately.

In addition, since the vibrator protrudes from the dummy part of the lamp body, the provision of the vibrator does not reduce the actual area of the reflective part. The inner opening does not stand out abnormally and deteriorate the appearance.

(F, Embodiment) [Figures 1 to 6] Details of the vehicle lamp of the present invention will be explained below according to an illustrated embodiment. It was applied to

(a, Lamp Body) [Figures 1 to 4 and 12 show the lamp body, which is made of synthetic resin, for example, reinforced plastic reinforced by mixing glass fiber or the like.

The lamp body has an open front surface, and has a reflecting section 3 having a paraboloid of revolution reflecting surface on its inner surface.
A planar dummy portion 4 is integrally formed which projects laterally from the opening edge in the form of a flange. The dummy part 4 is formed so that the widths of the parts 4a and 4b located above and below the dummy part 4 are narrow, and the widths of the parts 4c and 4d located on both left and right sides thereof are wide.

A light bulb mounting hole 5 is formed approximately in the center of the reflecting section 3, and a circular shape is formed so as to surround the light bulb mounting hole 5 on the rear surface of the reflecting section 3 at a position slightly away from the edge of the opening. Surrounding walls 6 are integrally formed. Several notches), 7, and 5 are formed on the rear end surfaces of these surrounding walls 6. In addition, several notches are formed near the outside of the surrounding walls 6. The boss portions 8.8.8 are integrally formed, and dovetail holes 9.9.9 are formed in these boss portions 8.8.8. Ribs 10, to, to are formed between and the surrounding wall 6.

11 is a light bulb mounting plate, and an insertion hole 12 is formed in the center thereof. Insertion hole 1 on the front side of the light bulb mounting plate 11
A circular wall 13 is formed facing forward from the opening edge of 2, and the inner diameter of the wall 13 is formed to a size that allows it to fit snugly around the surrounding wall. In addition, notches 14, 14, and 14 are formed in this wall 13, and when the wall 13 is fitted onto the surrounding wall 6, the surrounding M6 and the boss portion 8
．． The ribs 10, 10°10 formed between 8.8 and 8.8 are adapted to engage with said notches 14.14.14.

The light bulb mounting plate 11 has screw insertion holes 15.15.1.
5 is formed, and when the wall body 13 is fitted onto the surrounding wall 6, the screw insertion hole 15.15.15 is inserted into the boss portion 8.8.8.
It coincides with the dovetail hole 9.9.9 formed in .

A pressing piece protrudes toward the insertion hole 12 from the opening edge of the insertion hole 12 on the rear surface of the light bulb mounting plate 11! 6.16.16 are integrally formed, and these pressing pieces 16.16
．． One end in the circumferential direction of 16 is an introduction part 17.1 that is inclined so as to be gradually displaced rearward as it approaches the tip.
It is said to be 7.17.

The light bulb mounting plate 11 as described above has its wall body 13 fitted onto the surrounding wall 6 of the lamp body 2, and the screw insertion holes 15.
15.15 is inserted into the dovetail hole 9, 9.18 formed in the boss portion 8.8.8 of the lamp body 2.
It is fixed to the lamp body 2 by being screwed into the lamp body 9. In this state, the pressing piece 16 of the light bulb mounting plate 11
．． 16.16 is a notch formed in the surrounding wall 6 of the lamp body 2, located so as to cover 7.7 from the rear, and is located between the leading end of the introduction part 1 and 17.17 and the rear end surface 6a of the surrounding wall 6. A notch 7.7, an introduction slit 19, 19, and 19 whose spacing becomes narrower toward the front side are formed between the opening and the opening.

20.21 are the left and right dummy parts 4c of the lamp body 2
, 4Δ are connecting tubes integrally protruding from the rear surface of the upper end portions, and the inside and rear side of the lamp body 2 are communicated with each other through the connecting tubes 20 and 21.

(b, Vibrator) [Figs. 1 to 6] Reference numerals 22 and 23 indicate a vibrator, one end of which is fixed to the connecting pipe 20 and 21 in an externally fitted manner.

The vibrator 22 has an upper horizontal part 22a extending straight rearward from a portion externally fitted onto the connecting pipe 20, an upper vertical part 22b extending downward from the rear end of the upper horizontal part 22a, and an upper vertical part 22b. A lower horizontal part 22c extending laterally from the lower end and a lower vertical part 22d extending downward from the tip of the lower horizontal part 22c are integrally formed, and the lower end of the lower vertical part 22d is connected to the lamp body. It is located further below the lower end of 2. The lower end of the lower vertical portion 22d is obliquely cut at an angle of approximately 45°, and the beveled surface 24 faces toward the rear and lower part.

The other vibrator 23 also has an upper horizontal part 23a and an upper vertical part 23.
b, a lower horizontal portion 23c, and a lower vertical portion 23d are integrally formed, but the lower end of the lower vertical portion 23d is located above the lower end of the lamp body 2.

Thus, one of the vibrators 22 and 23 serves as an expulsion vibrator, and the other serves as an inhalation vibrator.

(c, Lens) [Figures 1 to 3] 25 is a lens, which has a reflective part 3 and a dummy part 4 on the front surface of the lamp body 2.
It is airtightly attached to cover the front of the

(d, light bulb) [Figures 1 to 3] 26 is a light bulb.

The light bulb 26 is a glass bulb 28 in which two filaments are enclosed.
and a base portion 29 on which the glass bulb 28 is supported.

30 is a metal holder wrapped around the rear end of the glass bulb 28, and the holder 30 is fixed to support pins 31, 31, . , the glass bulb 28 and the cap part 29 are connected.

A connector portion 32 is integrally formed in the cap portion 29, one end of a contact piece (not shown) is positioned within the connector portion 32, and the other end of the contact piece protrudes from the front end of the cap portion 29 to connect the glass bulb 28. ) is connected to the external lead wire derived from the

A flange 33 is protruded from a position near the front end of the mouthpiece 29, and engagement pieces 34, 34, 34 are protruded from the outer peripheral edge of the flange 33 at intervals in the circumferential direction. Note that the width of this engaging piece 34.34.34 substantially matches the width of the notch 7.7.7 provided in the surrounding wall 6 formed in the lamp body 2, and the engaging piece 34.34. 34 is notch 7
．． 7.7 to fit snugly.

Reference numeral 35 denotes an O-ring made of an elastic material and attached to the outer peripheral surface of the front end of the mouthpiece 29.

Therefore, in the light bulb 26, the glass bulb 28 is connected to the light bulb mounting plate 11.
is inserted into the lamp chamber 4 through the insertion hole 12 and the surrounding wall 6. Then, the engaging pieces 34, 34, 34 of the light bulb 26 come into contact with the rear surface of the pressing piece 16 of the light bulb mounting plate 11. after that,
The entire light bulb 26 is moved 8w toward the entrance of the introduction slit 19.19.19 of the light bulb mounting plate 11 so that the engaging piece 34.34.34
It rotates like J. Then, the engagement piece 34.34
．． 34 enters the introduction slit 19.19.19 while deflecting the introduction part 17.17.17 slightly backward, and eventually engages with the notch 7.7.7 provided in the surrounding wall 6, and this state The engaging pieces 34, 34.34 are held by being pressed from behind by the suppressing pieces 16.16.16 of the light bulb mounting plate 11. The light bulb 26 is thus attached to the lamp body 2, and at this time, the O-ring 35 attached to the light bulb 26 is compressed with the inner peripheral surface of the surrounding wall 6, and this light bulb attachment part Make it airtight.

Therefore, the lamp and vacuum space 36 defined by the lamp body 2 and the lens 25 are communicated with the outside only by the two vibrators 22 and 23.

(e. Effect of Vibrator) In the above-mentioned automobile headlamp 1, when a car equipped with this headlamp runs, the lower end of one of the vibrators 22 is located below the lower end of the lamp body 2, so that when the car is running The wind pressure associated with this is applied to the lower end of the vibrator 22. The lower end of this vibrator 22 is obliquely cut, and the beveled surface 24 faces toward the lower rear, so that this vibrator 22
Negative pressure is generated on the beveled surface 24 by the air flow passing around the lower end of the slanted surface 24 .

Therefore, the air in the lamp space 36 is forcibly discharged through the vibrator 22 due to the negative pressure, and the new air is replenished into the lamp space 36 through the other vibrator 23.

In this way, in the above automobile headlamp 1, air flow is generated in the lamp space 36 as the car in which it is installed runs, and this is done while always taking in outside air. Become.

Therefore, in the automobile headlamp 1, even if fogging occurs on the inner surface of the lens 25 or the reflective surface 3 due to lighting, once the automobile starts running, the outside air generated in the lamp space 36 will be removed. The fogging will be rapidly removed by the flow of air while taking in the fog.

Incidentally, if the inside of the lamp space 36 is communicated with the outside, it is common for dust to enter the lamp space 36 and adhere to the reflective surface 3 and the inner surface of the lens 25, but as shown in the above embodiment, In addition, if each of the vibrators 22 and 23 is formed with three bent portions, the dust will not reach the upper end of the vibrator 22 and 23 because its speed will be reduced at these bent portions.

In addition, horizontal parts 22a, 22c, 2 are attached to each vibrator 22.23.
3a and 23c, even if dust enters the vibrator 22, 23, the dust will be removed from these horizontal parts 22
a, 22c, 23a, and 23c, and hardly enters into the lamp space 36.

Furthermore, water intrusion is hardly a problem. Furthermore, vibe 2
Since the lower end of No. 2 is beveled, it is difficult for water droplets to adhere there.

Note that if the vibrators 22 and 23 are made removably attachable to the lamp body 2 and replaced periodically, the inside of the lamp space 36 will be further kept clean.

In addition, the inner diameter of the vibrator 22.23 is 5mm to 10fflf.
The one within the range of fl is most preferable, because if the inner diameter is less than 5ffilI+, there is a risk of clogging due to the surface tension of water droplets attached to the lower end of the vibrator 22.23, and if it is more than 10 mm, This is because they are used to being susceptible to water and dust getting inside.

Furthermore, it is preferable that the vibrator 22.23 is connected to the lamp body 2 at the upper end of the lamp body 2. By doing so, the length of the vibrator 22.23 can be increased, and the intrusion of dust etc. becomes more effective in preventing If the connection part of the vibrator 22.23 is located at the upper part of the lamp body 2, when viewed through the lens 25, the connection hole (opening part of the connection pipe 20.21 on the lamp space 36 side) is located at the bottom. It also has the advantage of being less noticeable than when it is on the side.

(f. Modified example of lamp body) [Figures 7 to 9] (f-1, first modification) [Figure 7] FIG. 7 shows a modification 2A of the lamp body.

In this lamp body 2A, a projecting wall 3 is located close to the lower end of the shorter vibrator 23 and faces the lower end opening of the vibrator 23.
7 is formed.

Therefore, there is an effect that dust and water splashing up from below are obstructed by the projecting wall 37 and difficult to enter the vibrator 23.

(f-2, Second Modification) [Figure *a, Figure 9] Figures 8, 9, and 9 show a second modification 2B of the lamp body.

A short duct 3B protruding from the lower end is formed in this lamp body 2B. The duct 38 has two side walls 3
9.39 and the bottom wall 40 surround the side and lower part of the lower end of the vibrator 22, and the front part of the duct 38 has an enlarged diameter part 41 whose diameter increases toward the front end. It is formed.

Therefore, the airflow accompanying the running of the car is taken in by the enlarged diameter portion 41 at the front end of the duct 38, and from there the flow path is narrowed to increase the flow velocity. A beveled surface 24 is located. Therefore, the negative pressure generated on the beveled surface 24 becomes higher, and as a result,
The efficiency of discharging the air within the lamp space 36 can be further increased.

The presence of this duct 38 also has the effect of preventing water and dust from entering the vibrator 22.

Further, although it is better to have the bottom wall 40, a considerable effect can be achieved even without it.

(g, Modified example of the vibrator) [Figures 10 to 12] (g-1, First modified example) [Figure 10] Figure 10 shows a modified example 22A (23A) of the vibrator. .

This vibrator 22A (23A) is the vibrator 22.23.
The portion 42 corresponding to the horizontal portion 22c123c of
It is placed at a lower position than the vibrator 2b, and the other parts are the same as the vibrator 22 and 23.

By providing such a portion 42, it becomes more difficult for dust to pass through this portion 42 and ascend the vertical portion 22b (23b), making it more difficult for dust etc. to enter the lamp space 36. can be prevented.

(g-2, second modification) [Figures 11 and 12] Figures 11 and 12 show another modification of the vibrator 22B (2
3B).

This vibrator 22B (23B) has an inner diameter of a portion 43 corresponding to the horizontal portions 22c, 23c of the vibrator 22.23 that is larger than the inner diameter of the other portions.

As a result, the air flow suddenly slows down in this part 43, so that the dust carried by the air flow is left behind in this part 43, making it more difficult for dust to enter the lamp space 36. It can be effectively prevented.

(G. Effects of the Invention) As is clear from the above description, in the vehicle lamp of the present invention, the front opening of the lamp body to which the light bulb is attached is covered with a lens; A reflective part that reflects the light directly emitted from the light bulb forward and a dummy part that does not have such a function are provided in the lower part of the lamp body. Two vibrators are protruded and communicated with the defined lamp space, and the tip of one of the vibrators is located below the lower surface of the lamp body and is formed into a beveled shape, and the beveled surface is approximately Characterized by facing backwards.

Therefore, in the vehicle lamp of the present invention, when the vehicle starts running, negative pressure is generated at the tip of one of the vibrators, and the air in the lamp space is forcibly discharged to the outside through the one vibrator. With this, new air flows into the lamp space through the other vibrator, and the air in the lamp space is forced to flow, which causes a sudden temperature change in the initial stage of lighting. Even if fogging occurs on the inner surface of the lens, reflective surface, etc., such fogging is quickly removed.

In addition, since the vibrator protrudes from the dummy part of the lamp body, the ε provided with the vibrator does not reduce the substantial area of the reflective part. The openings in the space are not unusually conspicuous and do not look bad.

[Brief explanation of the drawing]

1 to 6 show an example of the implementation of the vehicle lamp of the present invention, in which FIG. 1 is a partially exploded perspective view, FIG. 2 is a vertical cross-sectional view, and FIG. A sectional view taken along the line III-III in the figure, Fig. 4 is an enlarged sectional view of one of the vibrators, Fig. 5 is a side view of one of the vibrators, Fig. 6 is a rear view of one of the vibrators, and Fig. 7 is a lamp. FIGS. 8 and 9 are perspective views of essential parts showing a first modification of the lamp body; FIGS. 8 and 9 show a second modification of the lamp body; FIG. 8 is a perspective view of essential parts; FIG. 10 is a rear view showing a first modified example of the vibrator, FIGS. 11 and 12 show a second modified example of the vibrator, FIG. 11 is a rear view, and FIG. 12 is a rear view of the vibrator. is a sectional view along the store-stubble of FIG. 11; Explanation of symbols 1...Vehicle lamp, 2...Lamp body, 3...Reflector, 4...
Dummy part, 22.23... Vibrator, 24 Beveled surface, 25... Lens, 26...
Light bulb, 36... Lamp space, 2A... Lamp body, 2B... Lamp body, 22A, 23A, pot/vibrator, 22B, 23B... Pipe 22, Via 22... 11° ear 24, Oblique Cutting surface 24...F+cutting surface 5th
Figure 6 1. Lamp 2A Lamp 0 Body 4 Main part perspective view (first modification) Figure 7 4 section rear view (Variation example of Via O￥2) m [Figure 11 (f
f-1 line) Figure 11 Figure 12

Claims (1)

[Claims] The front opening of the lamp body to which the light bulb is attached is covered with a lens, and the part of the lamp body covered by the lens includes a reflective part that reflects the light emitted directly from the light bulb forward. A dummy part that does not have such a function is provided, and two pipes project from the dummy part of the lamp body and communicate with the lamp space defined by the lamp body and the lens. A vehicle lamp characterized in that the tip is located below the lower surface of the lamp body and is formed into a beveled shape, and the beveled surface faces substantially rearward.