JPWO2010140416A1 - Method for producing glass member for wavelength conversion - Google Patents

Abstract

Provided is a method for producing a wavelength conversion glass member, which can produce a wavelength conversion glass member excellent in durability by a simple method while suppressing deterioration of a phosphor. A glass material is pressure-molded to form a glass molded body, and a phosphor is supplied onto the formed glass molded body. And the supplied fluorescent substance and a glass molded object are pressurized, and a fluorescent substance and a glass molded object are integrated.

Description

  The present invention relates to a method for manufacturing a wavelength conversion glass member, and more particularly to a method for manufacturing a wavelength conversion glass member having a phosphor for converting the wavelength of at least part of light from a light source.

  A white light-emitting diode (hereinafter also referred to as a white LED), which is a type of white light-emitting element, has excellent features such as low power consumption, small size and light weight, little heat generation, mercury-free, and easy adjustment of light quantity. Therefore, it is expected as a next-generation energy-saving illumination light source that can replace incandescent bulbs, fluorescent lamps, and high-pressure discharge lamps.

  As a method of emitting white light using an LED, (1) a method of obtaining white light by combining three or more color LED chips (see Patent Document 1), (2) a blue LED chip or a near ultraviolet LED chip, A method of obtaining white light in combination with a phosphor (see Patent Documents 2 and 3) is known. Among these, the method (1) is difficult to balance the emission intensity of each color LED chip, and therefore, a method of obtaining white light by combining the LED chip and the phosphor as shown in (2) is attracting attention. ing.

  Patent Documents 2 and 3 describe a configuration in which a phosphor for converting the wavelength of light from an LED chip is dispersed and fixed in a resin material such as an epoxy resin or a silicone resin. However, such a resin material is prone to deterioration due to light from the LED chip, heat generation of the LED chip and the phosphor, and there is a problem that durability enough to withstand long-term use cannot be obtained. . In particular, when the brightness per unit area is required, such as an LED for a headlight of a car, the deterioration of the resin material in which the phosphor is dispersed is significant and has become a problem.

  Therefore, it is desired to develop a method for fixing a phosphor using glass having higher durability instead of a resin material. However, in the method of kneading the phosphor in the molten glass, the phosphor is left in the high temperature molten glass for a long time, so that the decomposition by the high temperature and the reaction with the components of the molten glass proceed. Will deteriorate significantly. In order to suppress the deterioration of the phosphor for such a problem, a method of dispersing the phosphor in the glass by mixing and sintering a predetermined component of the glass powder and the phosphor powder has been proposed. (See Patent Document 4).

JP 2003-45206 A Japanese Patent Laid-Open No. 10-242513 JP 2002-314142 A JP 2003-258308 A

  However, in the method described in Patent Document 4, there are problems that the types of glass that can be used are limited and the process becomes very complicated. In addition, there is a problem that the phosphor deteriorates to some extent during sintering.

  The present invention has been made in view of the above technical problems, and an object of the present invention is to produce a wavelength conversion glass member excellent in durability by a simple method while suppressing deterioration of a phosphor. It is providing the manufacturing method of the glass member for wavelength conversion which can do.

  In order to solve the above problems, the present invention has the following features.

1. A method for producing a wavelength-converting glass member having a phosphor for converting the wavelength of at least part of light from a light source,
A step of pressure-molding a glass material to form a glass molded body,
Supplying a phosphor on the glass molded body;
A method for producing a glass member for wavelength conversion, comprising: pressing the supplied phosphor and the glass molded body, and integrating the phosphor and the glass molded body.

  2. The temperature of the glass molded body at the start of pressurization of the phosphor and the glass molded body is a range of Tg−150 ° C. or higher and Tg + 150 ° C. or lower, where Tg is the glass transition point of the glass molded body. 2. The method for producing a wavelength converting glass member as described in 1 above.

  3. 3. The method for producing a glass member for wavelength conversion according to 1 or 2, wherein the phosphor is supplied by dropping a liquid in which the phosphor is dispersed onto the glass molded body.

  4). 3. The method for producing a glass member for wavelength conversion according to 1 or 2, wherein the phosphor is supplied by placing a sheet in which the phosphor is dispersed on the glass molded body.

5. The upper surface of the glass molded body has a convex or concave surface having a curvature,
The upper mold for press-molding the glass material to form the upper surface of the glass molded body and the upper mold for pressurizing the phosphor have different curvatures corresponding to the thickness of the phosphor. The method for producing a glass member for wavelength conversion according to any one of 1 to 4, wherein the glass member is for wavelength conversion.

  6). 6. The method for producing a glass member for wavelength conversion according to any one of 1 to 5, wherein the glass material is a dropped molten glass droplet.

  7). 7. The method for producing a glass member for wavelength conversion according to any one of 1 to 6, wherein the phosphor is composed of a plurality of types of phosphors having different wavelengths of emitted light.

  8). A layer including a first phosphor that emits light of a first wavelength by repeating the step of supplying the phosphor and the step of pressurizing the supplied phosphor and the glass molded body a plurality of times; 8. The method for producing a glass member for wavelength conversion as described in 7 above, wherein a layer containing a second phosphor that emits light of a second wavelength is laminated on the glass molded body.

  According to the method of the present invention, after the phosphor is supplied onto the glass molded body obtained by pressure molding, the phosphor and the glass molded body are pressed by pressurizing the supplied phosphor and the glass molded body. Since they are integrated, the phosphor does not come into contact with the high-temperature glass for a long time, the phosphor can be sufficiently prevented from being deteriorated, and the phosphor can be firmly fixed to the glass. Therefore, it is possible to produce a wavelength conversion glass member having excellent durability while suppressing deterioration of the phosphor by a simple method.

It is sectional drawing which shows typically white LED provided with the glass member for wavelength conversion. It is a flowchart which shows the manufacturing method of the glass member for wavelength conversion. It is a figure (first half) which shows each process of this embodiment typically. It is a figure (second half) showing typically each process of this embodiment. It is a figure which shows another form of the process of supplying fluorescent substance.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5, but the present invention is not limited to the embodiments.

  FIG. 1 is a cross-sectional view schematically showing the white LED 10. The white LED 10 includes an LED chip 12 disposed on a substrate 14 and a wavelength conversion glass member 13 manufactured by the method of this embodiment.

  The LED chip 12 may be a blue LED chip or an ultraviolet or near ultraviolet LED chip. The wavelength converting glass member 13 is disposed so as to surround the LED chip 12, and includes a glass layer 131 and a phosphor layer 132 formed on the surface thereof. Here, the case where the wavelength conversion glass member 13 has a hemispherical shape is illustrated as an example, but is not limited thereto. For example, both sides may have a flat plate shape or a so-called shell shape. The surface of the wavelength converting glass member 13 may be a convex surface, a concave surface or a flat surface. In the case of a convex surface or a concave surface, it may be a spherical surface or a shape having an aspherical component. Since the wavelength converting glass member 13 is manufactured by integrating the phosphor with a glass molded body obtained by press molding a glass material, it can be easily formed into various shapes.

  As will be described later, the wavelength converting glass member 13 is manufactured by pressurizing the supplied phosphor and the glass molded body. Therefore, the phosphor layer 132 is firmly fixed to the glass layer 131 and is excellent. It has durability. The phosphor layer 132 may be provided on any surface of the glass layer 131. When the glass molded body is formed by pressure molding, the surface on which the phosphor layer 132 is provided can be selected by adopting a configuration in which the surface on the side on which the phosphor layer 132 is provided becomes the upper surface.

  Next, the manufacturing method of the wavelength conversion glass member 13 will be described with reference to FIGS. FIG. 2 is a flowchart showing an example of a method of manufacturing the wavelength conversion glass member 13, and FIGS. 3 and 4 are diagrams schematically showing each step of the present embodiment. FIG. 5 is a diagram showing another embodiment of the process of supplying the phosphor.

  In addition, although the case where a molten glass droplet is used as an example is described here as an example, the glass material for pressure molding is not limited to a molten glass droplet, a molten glass having a predetermined volume is used. A solidified product can also be used. Moreover, it is also preferable to use what solidified glass processed into desired shapes, such as a bulb | ball and a flat plate. In the case of using solidified glass as the glass material, it may be used by heating to a temperature at which pressure molding can be performed together with the mold. On the other hand, when molten glass droplets are used as the glass material, a glass molded body can be obtained by receiving molten glass droplets with a relatively low temperature mold, and then cooling and solidifying while performing pressure molding as it is. There is an advantage that can be manufactured efficiently.

  Hereinafter, as an example of the manufacturing method of the glass member for wavelength conversion of this embodiment, the case where a molten glass droplet is used as a glass material is mentioned as an example, and it demonstrates later for each process according to the flowchart shown in FIG.

  First, the lower mold 21 and the upper mold 22, which are molds for press-molding the molten glass droplet 31, are each heated to a predetermined temperature (step S110) (see FIG. 3A). The lower mold 21 and the upper mold 22 are configured to be heated to a predetermined temperature by a heating unit (not shown). As the heating means, known heating means can be appropriately selected and used. For example, a cartridge heater that is used by being embedded inside the member to be heated, a sheet heater that is used while being in contact with the outside of the member to be heated, an infrared heating device, a high-frequency induction heating device, or the like can be used.

  The predetermined temperature may be appropriately selected according to the type of glass or phosphor. Generally, when the temperature of the lower mold 21 and the upper mold 22 is too low, it becomes difficult to obtain high shape accuracy. On the other hand, if the temperature is set higher than necessary, the life of the lower mold 21 and the upper mold 22 tends to be shortened. From these viewpoints, the temperature of the lower mold 21 and the upper mold 22 is preferably in the range of (Tg−150 ° C.) to (Tg + 100 ° C.), where Tg is the glass transition temperature of the glass used. ) To (Tg + 100 ° C.) is more preferable. The temperature of the lower mold 21 and the temperature of the upper mold 22 may be the same or different.

  Although the heating temperature of the lower mold 21 and the upper mold 22 may be changed for each process, the control temperature should be kept constant until the glass molded body (wavelength conversion glass member) is recovered in the process S160. Thus, high production efficiency can be ensured. In addition, a plurality of glass molded bodies can be repeatedly produced while keeping the control temperature of the lower mold 21 and the upper mold 22 constant. Therefore, it is not necessary to repeat the heating and cooling of the lower mold 21 and the upper mold 22 every time one glass molded body is manufactured, and an optical element can be manufactured efficiently in an extremely short time. Here, keeping the control temperature of the lower die 21 and the upper die 22 constant means that the target set temperature in the temperature control for heating the lower die 21 and the upper die 22 is kept constant. This does not mean that temperature fluctuation due to contact with the molten glass droplet 31 or the like must be prevented during implementation.

  The molding surface 211 of the lower mold 21 and the molding surface 221 of the upper mold 22 are precisely machined into a predetermined shape corresponding to the shape of the wavelength conversion glass member manufactured in advance. Thereby, the glass member for wavelength conversion which has high shape accuracy can be manufactured easily. Moreover, since the surface of the wavelength conversion glass member is formed by the molten glass droplet 31 coming into contact with the molding surfaces 211 and 221 and rapidly cooled, a surface smoother than the molding surfaces 211 and 221 can be obtained. . From the viewpoint of obtaining a sufficiently smooth surface, the arithmetic mean roughness Ra of the molding surfaces 211 and 221 is preferably 0.2 μm or less. The arithmetic average roughness Ra is a roughness parameter defined in JIS B 0601: 2001.

  The materials of the lower mold 21 and the upper mold 22 are heat-resistant alloys (stainless steel, etc.), super hard materials mainly composed of tungsten carbide, various ceramics (silicon carbide, silicon nitride, aluminum nitride, etc.), composite materials containing carbon, etc. It can be suitably selected from known materials as a mold for producing a glass molded body. The lower mold 21 and the upper mold 22 may be made of the same material or different materials.

  Moreover, it is also preferable to provide a coating layer on the surfaces of the lower mold 21 and the upper mold 22 in order to improve releasability from the phosphor and glass. For example, various metals (chromium, aluminum, titanium, platinum, etc.), nitrides (chromium nitride, aluminum nitride, titanium nitride, boron nitride, etc.), oxides (chromium oxide, aluminum oxide, titanium oxide, etc.), etc. are used. Can do. There is no limitation on the method for forming the coating layer, and it may be appropriately selected from known film forming methods. For example, vacuum deposition, sputtering, CVD, etc. are mentioned.

  Next, the lower mold | type 21 is moved to a dripping position, and the molten glass droplet 31 is dripped at the lower mold | type 21 (process S120) (refer FIG.3 (b), (c)).

  The lower mold 21 has a position (dropping position) for receiving the molten glass droplet 31 below the dropping nozzle 23 by a driving means (not shown), and a position for pressure-molding the molten glass droplet 31 facing the upper mold 22. It is configured to be movable between (pressing position). The movement to the dropping position may be before or after heating the lower mold 21 and the upper mold 22 (step S110) as long as the molten glass droplet 31 is not dropped.

  The dripping of the molten glass droplet 31 is performed by heating a pipe-shaped dripping nozzle 23 connected to a melting tank (not shown) containing molten glass to a predetermined temperature. When the dripping nozzle 23 is heated to a predetermined temperature by the heater 24, the molten glass is supplied to the tip of the dripping nozzle 23 by its own weight, and accumulates in droplets by the surface tension. When the molten glass collected at the tip of the dropping nozzle 23 reaches a certain weight, it is naturally separated from the dropping nozzle 23 by gravity and falls downward as a molten glass droplet 31.

  The weight of the molten glass droplet 31 dropped from the dropping nozzle 23 can be adjusted by the outer diameter of the tip of the dropping nozzle 23 and the like, and depending on the type of glass, the molten glass droplet 31 of about 0.1 g to 2 g is dropped. Can be made. In addition to the method of separating from the dropping nozzle 23 by gravity, a method of pressing and extruding molten glass or a method of separating by applying an external force such as airflow or vibration may be used. Further, the molten glass droplet 31 dropped from the dropping nozzle 23 is once made to collide with a member provided with through-holes, and a part of the collided molten glass droplet 31 is passed through the through-holes to be miniaturized. The molten glass droplets may be dropped on the lower mold 21. By using such a method, it is possible to obtain a minute molten glass droplet of, for example, 0.01 g, so that a smaller amount of glass is obtained than when the molten glass droplet 31 dropped from the dropping nozzle 23 is directly received by the lower mold 21. The molded body can be manufactured.

  There is no restriction | limiting in particular in the kind of glass which can be used, A well-known glass can be selected and used according to a use. Examples thereof include optical glasses such as borosilicate glass, silicate glass, phosphate glass, and lanthanum glass.

  Next, the lower mold | type 21 is moved to a pressurization position, and the molten glass droplet 31 is pressure-molded (process S130) (refer FIG.3 (d)). The molten glass droplet 31 is rapidly cooled by coming into contact with the lower mold 21 and the upper mold 22 and solidified to become a glass molded body 32. The time from the start of pressurization to the solidification of the glass depends on the type and size of the glass, but is usually in the range of several seconds to several tens of seconds. The load applied to press the molten glass droplet 31 may be constant or may be changed with time. What is necessary is just to set the magnitude | size of a load suitably according to the size etc. of the glass forming body 32 to manufacture. Usually, it may be set in the range of several hundred to several thousand N. The driving means for moving the upper mold 22 up and down is not particularly limited, and known driving means such as an air cylinder, a hydraulic cylinder, and a servo motor can be appropriately selected and used.

  In FIG. 3 (d), only the upper mold 22 is moved in the pressing direction to perform the pressure molding of the molten glass droplet 31, but the present invention is not limited to such a configuration, and the upper mold 22 is fixed. In addition, only the lower mold 21 may be moved in the pressing direction to perform pressure molding, or both the lower mold 21 and the upper mold 22 may be moved to perform pressure molding.

  In addition, when using the solidified glass as a glass material instead of the molten glass droplet 31, it is necessary to heat the glass material to a temperature of at least Tg or more in order to deform the glass material by pressure molding. . Usually, it is preferable to heat to a temperature near the softening point.

  Next, the phosphor 33 is supplied onto the glass molded body 32 (step S140) (see FIG. 4A).

  There is no restriction | limiting in particular in the supply method of the fluorescent substance 33. FIG. The phosphor 33 may be supplied in a powder state. However, from the viewpoint of preventing scattering and stabilizing the supply amount, the phosphor 33 may be supplied in a state of being dispersed in a liquid or gel binder. preferable. At this time, it is preferable that the binder is vaporized or thermally decomposed at a low temperature so that an unnecessary binder does not remain in the manufactured wavelength conversion glass member. For example, organic solvents such as ethanol and acetone, and synthetic resins are suitable. The synthetic resin, such as polystyrene or polypropylene, is preferably a residue that hardly remains due to thermal decomposition.

  In the method of the present embodiment, the supplied phosphor 33 is pressed and integrated with the glass molded body 32, so that even if the phosphor 33 is not supplied to the surface of the glass molded body 32 with a uniform thickness, the addition is possible. There is an advantage that the thickness is made uniform by the pressure. For example, as shown in FIG. 4A, a liquid binder in which the phosphor 33 is dispersed may be supplied by being dropped onto the glass molded body 32. According to this method, a predetermined amount of the phosphor 33 can be easily supplied by using a known dispenser or the like. As another form of supplying the phosphor 33, as shown in FIG. 5, a sheet in which the phosphor 33 is dispersed may be supplied by placing it on the glass molded body 32. This method is also a preferable method because a predetermined amount of phosphor 33 can be easily supplied by preparing a sheet-like binder in which a predetermined amount of phosphor 33 is dispersed in advance. The above-described synthetic resin or the like may be used for the sheet-like binder.

  The phosphor 33 may be appropriately selected and used according to the use and type of the white LED. When a blue LED chip is used as the LED chip 12, for example, a blue phosphor + yellow phosphor is configured using a yellow phosphor that converts blue light into yellow light (excited by blue light and emits yellow light). By doing so, white light can be obtained. By using two or more kinds of phosphors, for example, a configuration of blue LED + yellow phosphor + red phosphor or a configuration of blue LED + green phosphor + red phosphor can be used. Further, when an ultraviolet or near-ultraviolet LED chip is used as the LED chip 12, white light is obtained by adopting a configuration of blue phosphor + yellow phosphor or a configuration of blue phosphor + green phosphor + red phosphor. Can do.

  Suitable phosphors 33 include YAG phosphors, silicate phosphors, nitride phosphors, oxynitride phosphors, sulfide phosphors, thiogallate phosphors, aluminate phosphors, and the like.

  Further, one type of phosphor may be supplied, or a plurality of types of phosphors 33 having different emission wavelengths may be used. By appropriately selecting and using a plurality of types of phosphors 33, it is possible to obtain white light with high color rendering properties that is preferred for illumination.

  In the case of using a plurality of types of phosphors 33, a binder in which a plurality of phosphors are mixed and dispersed may be supplied and pressurized. In addition, first, the first phosphor that emits light of the first wavelength is supplied and pressurized, and then the second phosphor that emits light of the second wavelength is supplied and pressurized again. It is also preferable to form a laminated structure. In general, when a plurality of types of phosphors are used at the same time, loss due to so-called multistage excitation, in which light emitted from the first phosphor excites another second phosphor, tends to be a problem. However, the step of supplying the phosphor 33 and the step of pressurizing the supplied phosphor 33 and the glass molded body 32 are repeated a plurality of times to include the first phosphor that emits light of the first wavelength. Such a loss due to multi-stage excitation can be reduced by laminating a layer and a layer containing a second phosphor that emits light of the second wavelength on a glass molded body. . From the viewpoint of more effectively reducing the loss due to multi-stage excitation, the phosphor layer 132 having the longer emission wavelength is formed on the side where the light from the LED chip serving as the light source reaches first, and on the side where the light reaches later. More preferably, the phosphor 33 is supplied so that the phosphor layer 132 having a shorter emission wavelength is formed.

  The glass molded body 32 may be floated from the lower mold 21 and the phosphors 33 may be supplied to both surfaces of the glass molded body 32. By supplying the phosphor 33 to both surfaces of the glass molded body 32 and providing the phosphor layer 132 on both surfaces of the glass layer 131, the thickness of each phosphor layer 132 can be reduced, so that the phosphor 33 is more firmly fixed. And has the advantage of improved durability. Moreover, when using multiple types of fluorescent substance 33, the 1st fluorescent substance which light-emits the light of 1st wavelength, and the 2nd fluorescent substance which emits the light of 2nd wavelength are made into a glass molded object. Thus, the loss due to the multi-stage excitation as described above can be reduced by providing the phosphor layers 132 on both surfaces of the glass layer 131.

  Next, the supplied phosphor 33 and glass molded body 32 are pressurized (step S150) (see FIG. 4B).

  In this step, the phosphor 33 and the glass molded body 32 may be pressed using the same mold as the lower mold 21 and the upper mold 22 used in step S130, or may be applied using another mold. You may press. From the viewpoint of making the thickness of the phosphor layer 132 more uniform, when the upper surface of the glass molded body 32 has a convex surface or a concave surface having a curvature, the upper surface for pressurizing the phosphor 33 in this step is used. The mold 22 preferably has a curvature different from that of the upper mold 22 for forming the upper surface of the glass molded body 32 by press-molding the molten glass droplet 31 in accordance with the thickness of the phosphor 33. For example, when the upper surface of the glass molded body 32 is a concave spherical surface, the upper mold 22 for pressurizing the phosphor 33 in this step has a large curvature (a small curvature radius) by an amount corresponding to the thickness of the phosphor 33. ) A convex spherical surface may be used.

  The temperature of the lower mold 21 and the upper mold 22 at the time of pressurization may be the same as or different from the temperature at which the molten glass droplet 31 is pressure-molded in step S130. As described above, when a binder is used to supply the phosphor 33, the temperature may be set so that the binder is sufficiently vaporized and thermally decomposed so that no unnecessary binder remains in the wavelength conversion glass member to be manufactured. preferable.

  Further, the adhesive force between the phosphor 33 and the glass molded body 32 is greatly influenced by the degree of solidification of the glass molded body 32 (temperature of the glass molded body 32) when starting pressurization. The higher the temperature of the glass molded body 32, the better the adhesion, but on the other hand, the phosphor 33 tends to deteriorate. On the contrary, when the temperature of the glass molded body 32 is low, the adhesive force is reduced, but the deterioration of the phosphor 33 is suppressed. From the viewpoint of more firmly fixing the phosphor 33 and the glass molded body 32 while sufficiently suppressing the deterioration of the phosphor 33, the glass molded body when the pressurization of the phosphor 33 and the glass molded body 32 is started. The temperature of 32 is preferably in the range of Tg−150 ° C. or higher and Tg + 150 ° C. or lower and Tg−100 ° C. or higher and Tg + 100 ° C. or lower, where Tg is the glass transition point of the glass molded body 32. Is more preferable.

  Thus, according to the method of the present embodiment, after the phosphor 33 is supplied onto the glass molded body 32 obtained by pressure molding, the supplied phosphor 33 and the glass molded body 32 are pressurized. Since the phosphor 33 and the glass molded body 32 are integrated, the phosphor 33 is not in contact with the high-temperature glass for a long time, and deterioration of the phosphor 33 can be sufficiently suppressed, and the phosphor 33 Can be firmly fixed to the glass.

  Finally, the pressure is released and the glass molded body 32 integrated with the phosphor 33 is collected (step S160) (see FIG. 4C). The glass molded body 32 may be collected using, for example, a mold release device 25 using vacuum suction. After the glass molded body 32 is collected, when the glass member for wavelength conversion is subsequently produced, the lower mold 21 is moved again to the dropping position (step S120), and the subsequent steps may be repeated.

  In addition, the manufacturing method of the glass member for wavelength conversion of this embodiment may include another process other than having demonstrated here. For example, it is also preferable to provide a step of inspecting the shape of the glass molded body 32 before collecting the glass molded body 32 and a step of cleaning the lower mold 21 and the upper mold 22 after collecting the glass molded body 32.

  The glass molded body 32 manufactured by the manufacturing method of this embodiment can be used as it is as a glass member for wavelength conversion for white LEDs. Further, the glass molded body 32 can be used as a glass member for wavelength conversion after being subjected to post-treatment such as outer diameter processing and annealing treatment.

10 White LED
DESCRIPTION OF SYMBOLS 12 LED chip 13 Glass member for wavelength conversion 131 Glass layer 132 Phosphor layer 14 Substrate 21 Lower mold 211 Molding surface 22 Upper mold 221 Molding surface 23 Dripping nozzle 31 Molten glass droplet 32 Glass molded body 33 Phosphor

Claims (8)

A method for producing a wavelength-converting glass member having a phosphor for converting the wavelength of at least part of light from a light source,
A step of pressure-molding a glass material to form a glass molded body,
Supplying a phosphor on the glass molded body;
A method for producing a glass member for wavelength conversion, comprising: pressing the supplied phosphor and the glass molded body, and integrating the phosphor and the glass molded body.   The temperature of the glass molded body at the start of pressurization of the phosphor and the glass molded body is a range of Tg−150 ° C. or higher and Tg + 150 ° C. or lower, where Tg is the glass transition point of the glass molded body. The manufacturing method of the glass member for wavelength conversion of Claim 1 characterized by the above-mentioned.   3. The method for producing a wavelength conversion glass member according to claim 1, wherein the phosphor is supplied by dropping a liquid in which the phosphor is dispersed onto the glass molded body.   3. The method for producing a wavelength conversion glass member according to claim 1, wherein the phosphor is supplied by placing a sheet in which the phosphor is dispersed on the glass molded body. . The upper surface of the glass molded body has a convex or concave surface having a curvature,
The upper mold for press-molding the glass material to form the upper surface of the glass molded body and the upper mold for pressurizing the phosphor have different curvatures corresponding to the thickness of the phosphor. The manufacturing method of the glass member for wavelength conversion of any one of Claim 1 to 4 characterized by the above-mentioned.   The method for producing a glass member for wavelength conversion according to any one of claims 1 to 5, wherein the glass material is a dropped molten glass droplet.   The said fluorescent substance consists of several types of fluorescent substance from which the wavelength of the light to light-emit differs, The manufacturing method of the glass member for wavelength conversion of any one of Claim 1 to 6 characterized by the above-mentioned.   A layer including a first phosphor that emits light of a first wavelength by repeating the step of supplying the phosphor and the step of pressurizing the supplied phosphor and the glass molded body a plurality of times; The method for producing a glass member for wavelength conversion according to claim 7, wherein a layer containing a second phosphor that emits light of a second wavelength is laminated on the glass molded body.