JP4535360B2 - Indicator light for disaster prevention equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an indicator lamp for a disaster prevention device that is used for disaster prevention of a tunnel composed of a main body and a translucent glove and that is installed in the vicinity of the disaster prevention facility or directly attached to the disaster prevention facility and indicates the installation location of the disaster prevention facility.
[0002]
[Prior art]
Conventionally, as a red indicator lamp of a disaster prevention facility for tunnels, for example, a fire alarm indicator lamp as shown in FIG. 8 is used.
[0003]
In FIG. 8, the indicator lamp includes a main body 101 and a globe 102. The main body 101 incorporates an LED lamp 103 as a light source, and a glove 102 is detachably attached to the opening of a flange 104 formed at the front of the main body by screwing.
[0004]
Here, the globe 102 is made of a light-transmitting synthetic resin colored in red, and a step-like ring groove 105 is formed in multiple on the inner surface of the globe so that the entire globe is brightened by the light from the LED lamp 103. is doing.
[0005]
[Problems to be solved by the invention]
However, in such a conventional indicator lamp for disaster prevention equipment, when the indicator lamp for disaster prevention equipment is mounted on the panel surface 106 or the like of the equipment along the tunnel wall surface, H = about Since it protrudes about 50 mm, the appearance is not good, and it is easy to be directly affected by the air current in the tunnel, so that there is a problem that dirt easily adheres.
[0006]
An object of this invention is to provide the indicator light for disaster prevention apparatuses mainly for tunnel disaster prevention which improves appearance and does not adhere dirt easily.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the present invention is configured as follows. The present invention relates to a disaster prevention indicator lamp comprising a main body having an opening in the front and a light source incorporated therein, and a translucent glove removably attached to the opening of the main body. The front surface of the globe to be made was a single rounded curved surface. Further, the present invention is characterized in that a plurality of ring grooves having a wedge-shaped cross section opened outwardly on the inner surface of the globe are formed from the center toward the outer side.
[0008]
Thus, the indicator lamp for disaster prevention equipment of the present invention is a single rounded curved surface from the shape of the conventional mountain-shaped globe, so that the protruding height is less than 60% of the conventional, for example, about 50 mm conventionally, This can be made 30 mm or less.
[0009]
In addition, with regard to visibility from the oblique side accompanying the reduction in thickness, an optical structure in which a ring groove having a wedge-shaped cross section that opens outward is formed in multiple on the inner surface of the globe with a single rounded curved surface from the center to the outside. By providing this, a virtual image that the internal light source is seen to be pulled forward is generated, and visibility from an oblique side is ensured by the virtual image of this light source even if it is thinned.
[0010]
As a dimensional condition of the indicator lamp for disaster prevention equipment of the present invention, the degree of thinness (H / D) defined by the ratio of the protrusion amount H of the globe to the main body maximum diameter D is about 0.3 or less. Further, the flatness (H / R) defined by the ratio of the globe curved surface to the globe protrusion amount H to the radius R is about 0.1 to about 0.2.
[0011]
According to the experimental consideration of the present inventor, the desirable form of the indicator lamp for disaster prevention equipment of the present invention is a thinness (H / D) of about 0.16 and a flatness (R / H). It was confirmed that it was about 0.2.
[0012]
Furthermore, the indicator lamp for disaster prevention equipment according to the present invention is characterized in that projections or grooves for turning by hand are formed at a plurality of locations on the periphery of the globe. Gloves indicator for emergency equipment is screwed to the body, when replacing the LED lamp used as a light source, it is necessary to unscrew the glove by hand, in its or until the thinning Since it is difficult for the finger to slip and turn the glove, protrusions for this purpose are provided at a plurality of locations.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an explanatory view showing an embodiment of an indicator lamp for disaster prevention equipment for tunnel disaster prevention according to the present invention. In FIG. 1, the indicator lamp for disaster prevention equipment of the present invention is composed of a main body 1 and a globe 2. The main body 1 has a flange portion 1a that is formed in a flange shape at the front and has an opening, and a translucent glove 2 that is molded from a red synthetic resin or the like is attached to the opening of the flange portion 1a.
[0014]
The globe 2 in the indicator lamp for disaster prevention device of the present invention has a thin structure with a sufficiently small forward protrusion with respect to the main body 1. Further, turning projections 11 are integrally formed at three positions on the peripheral edge of the globe 2 so that the globe 2 can be easily attached and detached by turning it around the collar portion 1a of the main body 1.
[0015]
FIG. 2 is a front view of FIG. 2 (A), a side view of FIG. 2 (B), and a rear view of FIG. From the explanatory diagram of the indicator lamp for disaster prevention equipment in FIG. 2, it can be easily understood that in the present invention, the globe 2 provided at the front part of the indicator lamp for disaster prevention equipment is thin enough.
[0016]
FIG. 3 is a cross-sectional explanatory view showing the internal structure of the indicator lamp for disaster prevention equipment of the present invention in a half cross section. In FIG. 3, a recess 4 is screwed and fixed inside the main body 1 with a tap screw 5, and an LED lamp 3 is attached in front of the recess 4. A cable connector 6 is screwed into the rear of the main body 1, and a cable drawn from outside can be fixed to the cable connector 6 using a frame 8 and a cap nut 7.
[0017]
The LED lamp 3 mounted on the receptacle 4 incorporates a number of LEDs and its drive circuit inside, and is driven to emit light by applying, for example, AC 100 volts from the outside. A fitting groove 1b is formed at the periphery of the opening of the flange 1a formed in a flange shape on the front part of the main body 1, and the fitting part 12 formed on the rear periphery of the globe 2 is interposed in the fitting groove 1b. The packing 9 is put in and fixed by screwing.
[0018]
The globe 2 has a spherical shape in which the front surface of the globe surface exposed from the main body 1 is a rounded curved surface having a single R. On the inner surface of the globe 2, a multiple ring groove 10 is formed in which a ring groove having a wedge-shaped cross section that opens outward is formed in a multiple manner from the center to the outside.
[0019]
In a preferred embodiment of the indicator lamp for disaster prevention equipment of the present invention, the maximum diameter D that becomes a part of the collar part 1a of the main body 1 is, for example, D = 92 mm, and the globe 2 protrudes from the collar part 1a of the main body 1 The amount H is 15 mm when the curvature R forming the R surface is 77 mm. For this reason, the protrusion amount Hmax in the tunnel inner direction when the indicator light for disaster prevention equipment of the present invention is mounted on the cross section of the equipment in the tunnel can be suppressed to, for example, Hmax = 25 mm.
[0020]
FIG. 4 shows the globe 2 of FIG. 3 taken out, FIG. 4 (A) is a front view, FIG. 4 (B) is a side view with a partial cross section, and FIG. The expanded sectional view of the a part of B) is shown.
[0021]
The globe 2 used in the indicator lamp for the disaster prevention device of the present invention has a curvature R with the entire globe surface being a curved surface in a state where the protruding amount H of the globe 2 is first set to a constant value such as H = 15 mm. Determine the value.
[0022]
Further, as shown in an enlarged view in FIG. 4C, a multi-ring groove 10 is formed on the inner surface of the globe 2 in which a ring groove having a wedge-shaped cross section that opens outward is formed in multiple layers from the center to the outside. The radial pitch p of one ring groove is, for example, p = 2 mm, and the depth of the groove in the optical axis direction is about 1.0 mm.
[0023]
Specifically, when the curvature R of the surface of the globe 2 is R = 77 mm, the curvature R of the round surface connecting the depth side edges of the multiple ring groove 12 is 74.5 mm, and the round surface connecting the front edge of the near side. The curvature R is formed to be 73.5 mm.
[0024]
Here, as a parameter indicating the so-called thinness of the globe 2 with a small projection amount with respect to the main body 1 in the indicator lamp for disaster prevention device of the present invention, the ratio of the projection amount H of the globe 2 to the maximum diameter D of the main body 1 in FIG. A thin lamp represented by (H / D) is defined.
[0025]
In the preferred embodiment of the present invention, since the main body maximum diameter D = 92 mm and the globe protrusion amount H = 15 mm, the degree of thinness (H / D) in this case is 0.16. The value of the degree of thinness (H / D) indicates that the smaller the value is, the smaller the amount of protrusion of the globe with respect to the main body 1 is, so-called thinness. By the way, in the conventional example of FIG. 8, if the thinness is determined as H = 500 and D = 92, the value is 0.55.
[0026]
When the present invention is used as an indicator lamp for tunnel disaster prevention, it is desirable that the protrusion amount Hmax at the time of attachment in FIG. 3 is, for example, Hmax = 30 mm or less, and in this case, the globe protrusion amount H is H = 20 mm. In this case, the thinness (H / D) is 0.22. Therefore, as a thin display lamp targeted by the display lamp for disaster prevention equipment of the present invention, a lamp having a thinness degree (H / D) of about 0.25 or less is considered.
[0027]
Next, in the indicator lamp for disaster prevention device of the present invention, the flatness of the protruding portion of the globe 2 is determined by the ratio (H / R) of the protruding amount H of the globe 2 to the curvature R that determines a single rounded curved surface of the globe 2. Define
[0028]
For the flatness (H / R), the value of the curvature R is adjusted so that the curved surface protruding from the globe 2 is optimal with the globe protrusion H used in the thinness (R / D) as a fixed value. To do.
[0029]
In the globe 2 of the embodiment of FIG. 3, the curvature R is 77 mm, and the flatness (H / R) in this case is 0.195. From this, the desirable thinness (H / D) in the indicator lamp for disaster prevention equipment of the present invention is about 0.16, and the flatness (H / R) indicating the curved surface state of the globe 2 is about 2.0. You can see that.
[0030]
Thus, if the value of desirable thinness (H / D) and flatness (H / R) in the indicator lamp for disaster prevention equipment of the present invention is determined, the maximum value D of the main body 1 and the globe in the indicator lamp for disaster prevention equipment are determined. By determining the protrusion amount H, it is possible to obtain a uniquely optimal value of the curvature R of the curved surface.
[0031]
Next, the optical function by the multiple ring groove 10 formed on the inner surface of the globe 2 of the indicator lamp for disaster prevention equipment of the present invention will be described.
[0032]
FIG. 5 (A) shows the LED lamp 3 on the main body 1 side located in the globe 2 of the indicator lamp for disaster prevention equipment of the present invention in a transparent state through the globe 2. The LED lamp 3 attached to the main body 1 has its tip portion slightly protruding from the tip of the collar 1 a of the main body 1.
[0033]
With respect to the tip of the LED lamp 3, the LED lamp 3 is inclined obliquely beyond about 10 ° with respect to the oblique side of the globe 2, specifically, the mounting surface on the side, through the globe 2 attached to the main body 1. When viewed from the side, a lamp virtual image 13 as shown by an imaginary line can be seen through the globe 2 instead of a real image of the LED 3.
[0034]
This lamp virtual image 13 is presumed to be due to the optical action of the rounded curved surface on the surface of the globe 2 and the multiple ring groove 10 formed on the inner surface. In the inventor of the present application, a ring groove having a wedge-shaped cross section opened outward as a ring groove shape has a pitch p = 2 mm and a depth in the optical axis direction of about 1.0 mm as shown in FIG. As a result, it was possible to experimentally obtain a state in which the brightness when viewed from an oblique side with the LED lamp 3 turned on was optimum.
[0035]
The optical action of the multiple ring groove 10 formed on the inner surface of the globe 2 can be confirmed, for example, as shown in FIG. In FIG. 5B, a line 15 indicated by a thick black line is drawn vertically and horizontally on the horizontally arranged paper 14. The globe 2 of the display lamp for disaster prevention device of the present invention shown in FIG. 4 taken out on the sheet 14 on which the line 15 is drawn is put, and the line 15 is passed through the globe 2 diagonally while slowly pulling up in the vertical direction indicated by the arrow. When viewed, the line 15 is sucked up so as to be sucked into the protruding center of the spherical surface of the globe 2 like a broken line virtual image 16 and the line virtual image 16 can be seen.
[0036]
When the line 15 drawn on the horizontal paper 14 is viewed through the globe 2 of the present invention, the lamp virtual image 13 as shown in FIG. As a result, even if the globe 2 is made as thin as the globe protrusion amount H = 15 mm, the viewing performance with sufficient brightness is obtained from the oblique side.
[0037]
FIGS. 6 and 7 show another embodiment of the globe 2 used in the indicator lamp for disaster prevention equipment of the present invention. Seven different types of globes 2A, 2B, 2C, 2D, Shown as 2E, 2F, 2G.
[0038]
Here, the curvature R of the curved surface in the globes 2A to 2G is 70 mm, 77 mm, 80 mm, 90 mm, 100 mm, 110 mm, and 150 mm. When the flat part (H / R) in this case is obtained, the values of 0.210, 0.195, 0.188, 0.170, 0.150, 0.136, 0.100 are obtained for the gloves 2A to 2G. Is obtained.
[0039]
Here, the globe 2B having the curvature R = 77 mm in FIG. 6 is the same as that used in the embodiment of FIG.
[0040]
Further, for example, in the globes 2C and 2D in FIG. 6 and the globes 2E and 2G in FIG. 7 in which the curvature R of the R surface increases, most of the globe surface including the center is a single rounded surface with the respective curvature R values. However, in order to suppress the influence of the air flow at the glove periphery, a curvature R value that gives another rounded surface is set as necessary. For this reason, the globe is composed of two rounded surfaces.
[0041]
From the embodiments of the globes 2A to 2G in FIGS. 6 and 7, it is sufficient that the flat portion of the globe that can be used in the indicator lamp for disaster prevention device of the present invention has a value of about 0.1 to 0.2. I understand. However, if the curvature R of the rounded curved surface increases as in the globes 2E to 2G in FIG. 7, the effect of pulling up the virtual image by the inner multiple ring groove 10 as shown in FIG. A glove having a curvature R in the range of 2D is desirable. Of course, as described above, the most preferable embodiment is the globe 2B.
[0042]
In addition, although said embodiment took the indicator lamp used for tunnel disaster prevention as an example, this indicator lamp for disaster prevention equipment is used as it is as a red indicator lamp in normal fire alarm equipment other than for tunnel disaster prevention. Of course, you may do.
[0043]
Further, the display lamp structure of the present invention can be applied as it is to a thin display lamp that suppresses the amount of protrusion of the globe without being limited to the display lamp for tunnel disaster prevention or fire report. Also in this case, the main body maximum diameter D, the globe protrusion amount H, and the curvature R of the globe are curved surface are uniquely determined by the thinness (H / D) and flatness (H / R) defined in the above embodiment. It can be determined by applying specific numerical values.
[0044]
Further, in the above embodiment, the turning projection 11 is formed on the globe 2, but it may be a turning groove, or may be formed at a plurality of places exceeding three places.
[0045]
【The invention's effect】
As described above, according to the present invention, the shape of the globe protruding from the main body is changed from the conventional mountain shape to a single rounded surface on the front, thereby reducing the amount of protrusion of the globe to the main body and realizing a thin shape. It is possible to improve the appearance of the indicator light for disaster prevention equipment, and at the same time, the projection amount is small, so that it is difficult to be affected by the air flow when installed in the tunnel, thereby preventing dirt from adhering. Furthermore, since the protruding amount of the globe in the tunnel is small, it becomes easy to remove the dirt of the indicator lamp for disaster prevention equipment even when cleaning the tunnel.
[0046]
Even if the light source slightly protrudes from the main body due to the optical action of the multiple ring grooves formed in multiple numbers from the center to the outside, the ring groove having a wedge-shaped cross section that opens outward on the inner surface of the globe, A virtual image is formed so as to be pulled up, and thus visibility from an oblique side can be sufficiently secured even if the glove is thin.
[0047]
In addition, by forming protrusions or grooves for turning at multiple locations on the periphery of the globe, even if oil or wrinkles adhere to the surface of the glove and become slippery when installed in the tunnel, the protrusions or grooves for turning are used. By doing so, the glove can be easily taken out by turning, and the glove can be easily attached and detached for performing necessary work such as replacement of the light source inside the glove and cleaning the glove.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an indicator lamp for disaster prevention equipment according to the present invention. FIG. 2 is an explanatory diagram of the front, side and back of the indicator lamp for disaster prevention equipment of the present invention. Cross-sectional explanatory drawing showing the structure [Fig. 4] Explanatory drawing showing the clove of the indicator lamp for disaster prevention equipment of the present invention [Fig. 5] Explanatory drawing of the optical function by the multiple ring groove of the glove [Fig. Explanatory drawing of the glove used for the indicator lamp for disaster prevention equipment of the present invention which was made [Fig. 7] Explanatory drawing of the glove used for the indicator lamp for disaster prevention equipment of the present invention in which the radius is changed following FIG. Illustration of indicator lights for disaster prevention equipment [Explanation of symbols]
1: body 1a: flange 1b: fitting groove 2: globe 3: LED lamp 4: recess 5: tap screw 6: cable connector 7: cap nut 8: top 9: packing 10: multiple ring groove 11: turning projection 13: Virtual image of lamp 14: Paper 15: Line 16: Virtual image of line

Claims (2)

A glove that is exposed from the main body of the glove in an indicator lamp for a disaster prevention device that includes a main body that is open on the front surface and that has a light source inside, and a translucent glove that is detachably attached to the opening of the main body. An indicator lamp for disaster prevention equipment, characterized in that a ring surface having a wedge-shaped cross section opened outward on the inner surface of the globe is formed in multiple numbers from the center to the outside . The indicator lamp for disaster prevention equipment according to claim 1 , wherein projections or grooves for turning are formed at a plurality of locations on the periphery of the globe.

Images