JPH1116486A - Lamp and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a marking from becoming invisible even if a base is exposed to a high temperature for a long time by arranging the base having a shell obtained by forming a plated layer having higher heat resistance than base metal on the surface of the base metal connected to a glass bulb and the marking formed directly on the surface of the base metal of the shell by penetrating the plated layer. SOLUTION: A screw type (E type) base 5 consists of a cylindrical shell 51 whose base metal 52 is brass for example, and having a screw part in the surrounding, a nickel plated layer 53 having higher heat resistance than the base metal, and marking 6. The cross section of the marking 6 formed in a cylindrical part 56 forms a recess-shaped part in the longitudinal direction by a part 61 formed by corroding and melting the nickel plated layer 53 with laser beams and a part 62 formed by corroding and melting the surface of the base metal 52 with laser beams. Even if the base 5 is oxidized and discolored, color difference between the discoloring (copper color) of the brass base metal 52 and the discoloring (silver color) of the nickel plated layer 53 is large, and the marking 6 is easily visible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp, such as a light bulb or a discharge lamp, having a display on a base portion, and a lighting device, such as a lighting fixture, equipped with the lamp.

[0002]

2. Description of the Related Art Lamps such as light bulbs and discharge lamps have different types,
Labels indicating ratings, trademarks, manufacturers, and the like are displayed. This display mark, for example, prevents the user or the consumer from purchasing a different type of lamp that does not match the dimensions, voltage, emission color, etc. when replacing the lamp because the lamp attached to the appliance is inconsistent. Alternatively, it is necessary to check whether or not the stock lamp is suitable for mounting on the fixture.

The display mark is provided on a glass bulb, a base, or a glove. This display mark is
Lamps are often stamped with ink on the glass bulb, but marking is difficult on small, small-diameter, large-curvature, and smooth-surface glass surfaces, making it particularly difficult to mark the interior surface. In the case of a small lamp, it is indicated on the base.

[0004] For example, in the case of an E-shaped base, the indication is made on an almost cylindrical outer surface near an opening which is separated from the end of the screw portion of the shell portion. In this display, a type mark or the like is stamped on the base joined to the valve using ink, or the base is stamped on a part. However, in the case of the seal, the display may be difficult to see due to the rubbing of the seal or the oxidative discoloration of the mouthpiece, or the mark may disappear in severe cases. In the case of engraving,
Although it does not disappear, it is displayed in advance, so it cannot be used for other types, and work and parts management are troublesome.

[0005] Recently, small lamps of this kind have become small,
Due to the high efficiency, there is a problem that the temperature rises sharply at the time of lighting, and as the temperature of the base rises, the oxidation progresses and the electrical connection is impaired as the lighting progresses. Therefore, a high heat-resistant base is required, and a base material made of aluminum, brass or the like, which is hardly oxidized from nickel or brass, is adopted.

[0006] Recently, marking on a die made of nickel-plated brass base metal has been performed by laser erosion instead of the above-mentioned stamping or engraving. This is done by setting the display items such as product type, rating, and trademark on the laser device in advance, irradiating the laser beam in accordance with these settings, and eroding and dissolving the nickel plating layer in the irradiated area. And characters and the like are drawn in concave portions such as grooves or dots, and a predetermined display is performed.

[0007]

However, when the display is made by eroding only the nickel plating layer, the display is unclear and very difficult to see due to the metallic luster of nickel. Is gone,
There is a problem of inconvenience in replacement.

[0008] In addition, the display of the product name or the like on an electric component by a laser beam is disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 61-165.
No. 574. According to the description of this publication, when displaying on the surface of a component, a coating material is formed on the surface, and the coating material is trimmed to a desired shape by laser light, so that only the coating material or the component is The display is formed up to the surface.

However, it does not mention a coating material or a material of a part, and it is stated that if trimming fails, coating should be performed again. Therefore, it is understood that the publication according to this publication does not cover metals, plating, and the like.

The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a lamp having a display that does not become difficult to see even if the base is exposed to a high temperature or the like for a long time, and an illumination device equipped with the lamp.

[0011]

According to a first aspect of the present invention, there is provided a lamp comprising: a glass bulb having a light emitting source sealed therein; and a base metal joined to the glass bulb. A base having a shell provided with a plating layer having higher heat resistance, and a display formed by penetrating the plating layer with a laser beam to the base metal and eroding the surface of the base metal with the shell of the base. It is characterized by.

As the lamp is turned on, the exposed display portion is eroded (etched) by the laser beam of the base metal in the base shell portion and discolored by oxidation, so that the color difference from the highly heat-resistant plating layer appears large. To play.

The term "base" as used in the present invention is not limited to the screw-type (E-type or EZ-type) base described in the embodiment, but may be a plug-in type (BA type) or a flanged type with a position adjusting ring ( P type)
Refers to a base having a metal shell or a skirt portion.

Further, the shape of the valve is not limited to the shape shown in the embodiment, but may be A type, G type, R type, BT type, PS type, T type or the like.

According to a second aspect of the present invention, there is provided a lamp including a glass bulb in which a light emitting source is sealed, a reflecting mirror having the glass bulb attached thereto, and a metal metal joined to the reflecting mirror. A base having a shell on the surface of which a plating layer having higher heat resistance than the base metal is applied, and a display formed by eroding the plating layer by laser light to the base metal through the base of the base metal with a laser beam. It is characterized by having.

The present invention is applied to a lamp with a reflecting mirror, and has the same effect as that of the first aspect.

A lamp according to a third aspect of the present invention is characterized in that the base metal forming the shell of the base is brass, and the surface thereof is coated with a nickel plating layer.

By forming a nickel layer having higher heat resistance than this metal on the surface of brass, the same effect as described in the first and second aspects can be obtained.

A lamp according to a fourth aspect of the present invention is characterized in that the light-emitting source is a light bulb having a coiled filament for emitting light or a discharge lamp having a discharge electrode.

The present invention is applied to the display of the type of a lamp which becomes high in temperature when lighting various kinds of electric lamps and high-pressure discharge lamps, and has the same effects as those described in the first to third aspects.

The light source refers to a coiled filament in the case of a light bulb and a discharge electrode in the case of a discharge lamp.

According to a fifth aspect of the present invention, there is provided a lighting device according to any one of the first to fourth aspects, wherein the device main body, a socket provided in the main body, and the socket are mounted on the socket. And a lamp.

The indication of the type and rating of the lamp which can be adapted to the lighting device is clarified, so that it is possible to prevent a wrong lamp from being mounted by mistake.

[0024]

FIG. 1 is a block diagram showing an embodiment of the present invention.
A description will be given with reference to FIG. 2 and a small incandescent lamp L1 used for a show window, a display, a stand, or the like. FIG. 1 is a front view, and FIG. 2 is a longitudinal sectional view of a main part of a base.

In the figure, reference numeral 1 denotes a glass bulb having a maximum diameter of about 35 mm in a PS type or an A type having a spherical shape on the top side, 2 a stem sealed at the end of the bulb 1, and 3 a plant in the stem 2. The coiled filaments 4c and 4d serving as the light source connected to the internal lead wires 4a and 4b are external lead wires derived from the stem 2 and are sealed via sealing wires (not shown). 4b. An inert gas such as krypton is sealed in the valve 1.

5 is an E having an outer diameter of about 17 mm, for example.
17 is a screw-type (E-type) base. The base 5 is made of, for example, a base metal 52 having a thickness of about 0.2 to 0.2.
A cylindrical shell 51 made of brass (brass) of about 5 mm and having a threaded portion around the shell, and a thickness of 1 mm on the surface of the shell 51.
It is composed of a nickel plating layer 53 (MD) having a higher heat resistance than the base metal 52 applied to about 3 μm, and an eyelet terminal 55 formed at the bottom with an insulator 54 made of black glass interposed.

The base 5 is joined to a sealing portion (not shown) of the end of the valve 1 with the stem 2 via an adhesive, and the shell 51 and the eyelet terminal 55 are externally connected. The tips of the lead wires 4c and 4d are connected by welding or soldering.

The cylindrical portion 56 having a width of about 3.5 to 5 mm from the opening of the shell 51 of the base 5 to the end of the screw portion has a height of about 2 to 2.5 mm. Of the product, rating, trademark, manufacturer, etc., which are made up of letters and numbers. In addition, the display 6 of these characters, numerals, etc., penetrates the nickel plating layer 53 provided on the outer surface of the shell 51, and has a depth of about 0.2 to 2.5 μmm from the surface of the base metal 52 made of brass. (BD), from the nickel plating layer 53, a groove-like or dot-like concave part having a depth (D) of about 3.2 to 3.5 μmm is formed. When viewed from the front, for example, a display of 100 / 110V60W is displayed. You can see that he is doing 6.

This is because the cylindrical portion 5
As shown in FIG. 2, which is a longitudinally enlarged view of FIG. 6, the cross section of the display 6 formed on the cylindrical portion 56, for example, “1”, is a portion 61 of the nickel plating layer 53 that has been eroded and melted by the laser beam.
A concave (groove) -shaped portion is formed in the vertical direction at a portion 62 where the surface of the base metal 52 is eroded and dissolved by the laser beam.

The means for forming the display 6 is the same as in the prior art. The laser device is previously set with the type, rating, trademark, etc., and is irradiated with a laser beam in accordance with the settings, and the nickel plating layer on the irradiated portion is set. By eroding and dissolving the surface side of the base metal 53 and the base metal 52, predetermined numbers, characters, and the like can be drawn in concave portions such as grooves or dots, and the predetermined display 6 can be performed.

Then, the small light bulb L1 having such a display 6 is turned on with the nickel plating layer 5 of the base 5 as the lighting progresses.
The brass metal 52, which is less heat-resistant than 3, gradually undergoes oxidative discoloration, and near the end of its life, the 6 parts of the display where the brass metal 52 is exposed due to erosion dissolution become copper-colored.

Therefore, there is a large color difference between the display 6 part in which the brass base metal 52 is exposed to become a copper color and the silver color of the nickel plating layer 53 with little oxidative discoloration. In this case, the type of the light bulb L1 conventionally mounted can be immediately and accurately confirmed, so that a problem such as mounting of a different kind of light bulb does not occur.

FIG. 3 shows another embodiment of the light bulb L2 of the present invention. In the drawing, the same parts as those in FIG. 1 are denoted by the same reference numerals and the description thereof will be omitted. FIG. 3 shows a reflective bulb L2 called a PAR type, in which a halogen bulb L3 sealed at one end is disposed in the center of a reflector 7 and an internal lead wire 4 is provided.
a and 4b. And this reflecting mirror 7
And the opening of the skirt portion 57 at the end of the screw-type (E-shaped) base 5 are joined by locking means such as unevenness. In the figure, reference numeral 72 denotes a light control body such as a lens provided on the front surface of the reflecting mirror 7.

The base 5 is also provided with a nickel plating layer 53 on the surfaces of the shell 51 and the skirt 57 made of brass metal 52. The skirt portion 57 of the base 5 is provided with a display 6 indicating the type, rating, trademark, and manufacturer of the light bulb L3 by means of laser light similar to the above-described embodiment.

Therefore, the temperature of the reflective bulb L2 rises due to the lighting of the internal halogen bulb L3, and the base 5
Although the temperature of the portion also becomes considerably high and oxidation discoloration proceeds with time, the display 6 formed on the skirt portion 57 has a hue different from that of the nickel plating layer 53 on the surface, so that it is possible to easily determine the type and the like. The same operation and effect as described above can be obtained.

FIG. 4 is a perspective view showing an embodiment of the lighting device of the present invention. FIG. 4 shows, for example, a lighting device (lighting device) 8 for a show window using the small light bulb L1 described in the above embodiment. In the figure, reference numeral 81 denotes a lighting fixture main body composed of a housing. The main body 81 is provided with a fixture (not shown) for a building or the like, a reflecting mirror 82, and a socket 83. Reference numeral 84 denotes a power supply line connected to the socket 83.

The electric bulb L1 mounted on the socket 83 of the illuminating device (illumination equipment) 8 is energized via a power supply line 84 and is turned on. This bulb L1 reaches its end of life, for example.
When replacing the bulb with a new bulb,
The display 6 of the kind or the like on the base 5 is still clear, the reading is easy, and a new bulb can be selected and replaced without error.

[0038]

According to the first to fourth aspects of the present invention, it is possible to provide an incandescent lamp, a discharge lamp, and the like having a high visibility in which the display of a variety can be easily recognized even when the base is oxidized and discolored. Can be.

According to the fifth aspect of the present invention,
Since the display of the type and rating of the lamp mounted on the appliance or the like can be easily and visually recognized, a new lamp can be prepared without error when replacing the lamp.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a lamp (small bulb) of the present invention.

FIG. 2 is an enlarged vertical sectional view of a main part of FIG.

FIG. 3 is a front view showing another embodiment of the lamp (reflective bulb) of the present invention.

FIG. 4 is a partially cutaway perspective view showing an embodiment of a lighting device of the present invention.

[Explanation of symbols]

 L1: lamp (small bulb) L2: lamp (reflection bulb) 1: glass bulb 11: sealing portion 3: light emitting source (coiled filament) 5: base 51: shell 52: metal base (brass metal) 53 : Plating layer (nickel plating layer) 6: display 7: reflective mirror 8; lighting device (lighting equipment)

Claims (5)

[Claims] 1. A glass bulb having a light emitting source sealed therein; and a base having a shell provided on a surface of a metal base joined to the glass bulb with a plating layer having higher heat resistance than the metal base; A lamp formed by penetrating a plating layer with a laser beam into the shell of the base to erode the inside of the base metal. 2. A glass bulb in which a light emitting source is sealed; a reflecting mirror to which the glass bulb is attached; and a surface of the metal base joined to the reflecting mirror having higher heat resistance than the metal base. And a display formed by penetrating the plating layer with a laser beam to erode the interior of the base metal. Lamp to do. 3. The lamp according to claim 1, wherein the base metal of the base is brass, and a nickel plating layer is formed on a surface of the base metal. 4. The lamp according to claim 1, wherein the light source is a light bulb having a coiled filament for emitting light or a discharge lamp having a discharge electrode. 5. An apparatus comprising: an apparatus main body; a socket provided in the main body; and a lamp according to any one of claims 1 to 4 mounted on the socket. Lighting device characterized by the following.